WO2014122736A1 - フィルタ装置および電気車駆動制御装置 - Google Patents
フィルタ装置および電気車駆動制御装置 Download PDFInfo
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- WO2014122736A1 WO2014122736A1 PCT/JP2013/052741 JP2013052741W WO2014122736A1 WO 2014122736 A1 WO2014122736 A1 WO 2014122736A1 JP 2013052741 W JP2013052741 W JP 2013052741W WO 2014122736 A1 WO2014122736 A1 WO 2014122736A1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/005—Interference suppression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L9/00—Electric propulsion with power supply external to the vehicle
- B60L9/16—Electric propulsion with power supply external to the vehicle using AC induction motors
- B60L9/18—Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines
- B60L9/22—Electric propulsion with power supply external to the vehicle using AC induction motors fed from DC supply lines polyphase motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/09—Filters comprising mutual inductance
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1758—Series LC in shunt or branch path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/147—Emission reduction of noise electro magnetic [EMI]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a filter device and an electric vehicle drive control device.
- Patent Document 1 As a conventional electric vehicle drive control device, for example, in Patent Document 1 below, in order to suppress a noise current generated when the inverter drives a motor from flowing out to the DC overhead line side, the input side of the inverter (DC overhead line side) In addition, a filter device including a filter reactor and a filter capacitor is provided.
- the filter device disclosed in Patent Document 2 is constructed using a filter reactor that magnetically couples a two-stage filter for enhancing the noise current suppression effect (outflow prevention effect) than the filter device of Patent Document 1.
- the third filter reactor is electrically connected to the intermediate tap drawn from the connection point between the first filter reactor constituting the first stage filter and the second filter reactor constituting the second stage filter. Are connected to each other.
- the third filter reactor is for canceling the negative equivalent inductance caused by the magnetic coupling between the first and second filter reactors.
- An original two-stage filter can be obtained by providing the third filter reactor. Therefore, the attenuation characteristic of the noise current in the high frequency range, which deteriorates when there is no third filter reactor, can be the original one of the two-stage filter.
- the filter reactor can be reduced in size.
- the filter characteristics are greatly changed, so that there is a problem that the noise current suppressing effect is deteriorated.
- a specific frequency bypass filter having an inductance element and a capacitance element for improving the attenuation rate of noise current in a specific frequency range is connected to the power supply source without having a sufficiently large inductance element. This is the same even when a short circuit fault occurs in the specific frequency bypass filter.
- the present invention has been made in view of the above, and even when a capacitance element connected without having a sufficiently large inductance element between the power supply source causes a short-circuit fault, It is an object of the present invention to obtain a filter device that can quickly remove a failure and operate an inverter after the failure is removed.
- a filter device is a filter device that removes noise current generated by an inverter, and includes a filter capacitor provided in parallel with a DC portion of the inverter, a high potential side of the filter capacitor, and power of DC power
- a series circuit unit connected to a low potential side of the capacitor and connected to one end of the filter reactor.
- the inverter can be operated later.
- FIG. 1 is a diagram illustrating a configuration example of an electric vehicle drive control apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a diagram showing an equivalent circuit of the filter circuit portion shown in FIG.
- FIG. 3 is a diagram showing a simulation result by the equivalent circuit of FIG.
- FIG. 4 is a diagram illustrating a configuration of an electric vehicle drive control device disclosed in Patent Document 1 and the like.
- FIG. 5 is a diagram showing the configuration of the electric vehicle drive control device disclosed in Patent Document 2.
- FIG. 6 is a diagram for explaining the filter characteristics of the filter device shown in FIG.
- FIG. 7 is a diagram for explaining a case where a short-circuit failure occurs in the capacitor and a short-circuit current flows in the electric vehicle drive control device shown in FIG. 4.
- FIG. 8 is a diagram for explaining a case where a short-circuit failure occurs in the overhead-side capacitor and a short-circuit current flows in the electric vehicle drive control device shown in FIG.
- FIG. 9 is a diagram showing a configuration example of an electric vehicle drive control apparatus according to Embodiment 2 of the present invention.
- FIG. 10 is a diagram illustrating an example in which a specific frequency bypass filter is inserted closer to the overhead line than the filter reactor in the one-stage filter device.
- FIG. 11 is a diagram illustrating an example in which a specific frequency bypass filter is inserted on the load side of the filter reactor in the one-stage filter device.
- FIG. 10 is a diagram illustrating an example in which a specific frequency bypass filter is inserted closer to the overhead line than the filter reactor in the one-stage filter device.
- FIG. 11 is a diagram illustrating an example in which a specific frequency bypass filter is inserted on the load side of the filter reactor in the one-stage filter device.
- FIG. 12 is a diagram illustrating an example in which a specific frequency bypass filter is inserted closer to the overhead line than the second filter reactor in a two-stage filter device using a magnetically coupled filter reactor.
- FIG. 13 is a diagram illustrating an example in which a specific frequency bypass filter is inserted on the load side of the first filter reactor in a two-stage filter device using a magnetically coupled filter reactor.
- FIG. 14 is a diagram illustrating an example in which a specific frequency bypass filter is inserted on the overhead line side of the second filter reactor in a two-stage filter device using a filter reactor that is not magnetically coupled.
- FIG. 12 is a diagram illustrating an example in which a specific frequency bypass filter is inserted closer to the overhead line than the second filter reactor in a two-stage filter device using a magnetically coupled filter reactor.
- FIG. 13 is a diagram illustrating an example in which a specific frequency bypass filter is inserted on the load side of the first filter reactor in a two-stage filter device using a magnetically coupled filter reactor.
- FIG. 15 is a diagram illustrating an example when a specific frequency bypass filter is inserted on the load side of the first filter reactor in a two-stage filter device using a filter reactor that is not magnetically coupled.
- FIG. 16 is a diagram illustrating a filter characteristic in which an attenuation factor in the vicinity of 25 Hz is improved in the filter configuration apparatus shown in FIG.
- FIG. 1 is a diagram illustrating a configuration example of an electric vehicle drive control apparatus according to Embodiment 1 of the present invention.
- the electric vehicle drive control device according to the first embodiment is configured to include a filter device 5, an inverter 6, and a motor (induction motor or synchronous motor) 7 as main components.
- the filter device 5 is disposed between the circuit breaker 4 provided on the power supply source side of the DC power and the inverter 6, and includes first to third filter reactors (51a to 51c), first and second filters.
- a capacitor (52a, 52b) and a fuse 53 as a circuit disconnecting unit are provided.
- the fuse 53 melts when a current larger than the rated current flows and cuts the circuit.
- the circuit disconnection unit may not be a fuse as long as it cuts the circuit when a current larger than the rated current flows.
- the DC voltage applied between the overhead line 1 and the rail 2, which is a power supply source of DC power, is brought into contact with the current collector 3 on the high potential side of the DC voltage, and the circuit breaker 4 and the filter device 5.
- the low potential side bus 55 b of the DC part of the inverter 6 is connected to the rail 2 via the wheel 8.
- the inverter 6 converts the DC power to be received into AC power that has been subjected to variable voltage variable frequency control (VVVF control) or fixed voltage variable frequency control (CVVF control), and supplies the AC power to a motor 7 for driving the vehicle.
- VVVF control variable voltage variable frequency control
- CVVF control fixed voltage variable frequency control
- the first and second filter reactors (51a, 51b) shown in FIG. 1 are constituted by a reactor with an intermediate tap, and two inductance elements, that is, a first filter reactor 51a and a second filter, depending on the intermediate tap position.
- the reactor 51b is divided.
- the inverter side of the reactor with the intermediate tap is the first filter reactor 51a
- the power supply source side of the intermediate tap is the second filter reactor 51b.
- you may comprise a 1st filter reactor and a 2nd filter reactor as another reactor. In the case of two separate reactors, they may be magnetically coupled to each other or may not be magnetically coupled.
- the first and second filter reactors (51a, 51b) are connected to the high potential side bus 55a of the DC part of the inverter 6. Since the reactor has an intermediate tap, the first filter reactor 51a and the second filter reactor 51b are magnetically coupled.
- the first filter capacitor 52a is connected to the high potential side bus 55a of the DC part of the inverter 6 to which one end of the first filter reactor 51a is connected, and the other end of the first filter capacitor 52a is connected to the DC of the inverter 6. Connected to the low potential side bus 55b. That is, the first filter capacitor 52 a is provided in parallel with the DC portion of the inverter 6.
- the first filter capacitor 52a and the first filter reactor 51a constitute a first-stage filter circuit (Low ⁇ ⁇ ⁇ ⁇ Pass Filter: LPF circuit).
- the first filter reactor 51a is also simply referred to as a filter reactor, and the first filter capacitor 52a is also simply referred to as a filter capacitor.
- One end of the fuse 53 is connected to an intermediate tap 57 drawn from a connection point 54 between the first filter reactor 51a and the second filter reactor 51b, and the other end of the fuse 53 is connected to one end of the second filter capacitor 52b.
- the other end of the second filter capacitor 52b is connected to one end of the third filter reactor 51c, and the other end of the third filter reactor 51c is connected to the low potential side bus 55b. That is, the series circuit portion 56 in which the second filter reactor 51b, the fuse 53, the second filter capacitor 52b, and the third filter reactor 51c are connected in series is connected to the overhead line 1 and the low-potential side bus 55b via the intermediate tap 57. It is comprised so that it may be connected between.
- the series circuit unit 56 including the second filter reactor 51b, the fuse 53, the second filter capacitor 52b, and the third filter reactor 51c constitutes a second-stage filter circuit (LPF circuit).
- the second filter reactor 51b is an inductance element constituting a series circuit part
- the fuse 53 is a circuit disconnection part
- the second filter capacitor 52b is a capacitance element.
- the fuse 53, the second filter capacitor 52b, and the third filter reactor 51c included in the series circuit unit 56 are connected in series in this order. These are connected in series so as to be connected between the intermediate tap 57 and the low potential side bus 55b.
- the connection order of these elements may be changed.
- the fuse 53, the third filter reactor 51c, and the second filter capacitor 52b may be arranged in this order from the high potential side.
- the fuse is preferably arranged on the high potential side as shown in FIG.
- FIG. 2 is a diagram showing an equivalent circuit of the filter device 5 shown in FIG.
- L 1 and L 2 are self-inductances of the first and second filter reactors (51a and 51b), and M is a mutual inductance between the first and second filter reactors (51a and 51b).
- L S is the self-inductance of the third filter reactor 51c
- C 1 and C S are the capacitances of the first and second filter capacitors (52a, 52b).
- R S is a resistance component of a circuit having the fuse 53, the second filter capacitor 52b, and the third filter reactor 51c.
- FIG. 3 is a diagram (graph) showing a simulation result by the equivalent circuit of FIG. 3, the solid line is the attenuation factor waveform when not equalize L 1, L 2, the dashed line is a phase waveform when not equalize L 1, L 2, dashed line L 1, L 2 is an attenuation factor waveform when 2 is made uniform, and a two-dot chain line is a phase waveform when L 1 and L 2 are made equal.
- the value of the resistance component R s of the series circuit portion is very small, it will be ignored.
- the negative inductance component ( ⁇ M) generated with respect to the current flowing through the intermediate tap 57 due to the magnetic coupling of the first and second filter reactors (51a, 51b) is the inductance component (M of the third filter reactor 51c).
- the inductance value of the circuit between the intermediate tap 57 and the low potential side bus 55b is assumed to be zero or sufficiently small. That is, the third filter reactor 51c is a coupling compensation inductance element that compensates for a negative equivalent inductance component generated with respect to a current flowing through the intermediate tap 57 due to magnetic coupling of the first and second filter reactors (51a, 51b). is there.
- the current flowing from the inverter 6 side to the filter device 5 is I in and the current flowing from the filter device 5 to the overhead wire 1 side is I out , it can be expressed as a ratio of the output current I out and the input current I in.
- the noise current suppression ratio (I out / I in ) can be expressed by the following equation.
- the suppression ratio is also called the attenuation rate.
- the L means the sum of the equivalent inductance L 1M of the first filter reactor 51a and the equivalent inductance L 2M of the second filter reactor 51b.
- the resonance frequency ⁇ R can be expressed by the following equation.
- the frequency when the minus ( ⁇ ) sign is selected is the resonance frequency on the low frequency side ( assuming ⁇ R_LOW ), and the frequency when the plus (+) sign is selected is the high frequency side resonance frequency.
- Resonance frequency ( assuming ⁇ R_HIGH ).
- the existence of these resonance frequencies ⁇ R_LOW and ⁇ R_HIGH on the low-frequency side or high-frequency side makes it possible to change the term that most affects the attenuation rate as shown in Table 1 below, and to maximize the attenuation rate. Also make it different.
- FIG. 4 is a diagram showing the configuration of the electric vehicle drive control device disclosed in Patent Document 1 and the like.
- the electric vehicle drive control device shown in FIG. 4 is configured to include a one-stage filter device 5X including a filter reactor 51X and a filter capacitor 52X.
- FIG. 5 is a diagram showing the configuration of the electric vehicle drive control device disclosed in Patent Document 2.
- the filter device 5Y of the electric vehicle drive control device shown in FIG. 5 the components having the same reference numerals are the same as those of the filter device 5 according to the first embodiment described above.
- the difference from the filter device 5 according to the first embodiment is that a fuse 53 serving as a circuit cutting unit is not provided.
- FIG. 6 is a diagram for explaining the filter characteristics of the filter device 5Y shown in FIG. 5, and shows a gain (attenuation factor) indicating how much noise current generated in the inverter remains in the DC overhead current (graph) ).
- the characteristic is as indicated by the broken line 56.
- the filter is made into a two-stage structure using a magnetically coupled filter reactor, the negative filter generated by the magnetic coupling is used. Due to the equivalent inductance, the gain characteristic in the high frequency region is deteriorated as shown by the solid line 57. Therefore, if a third filter reactor 51c that cancels the negative equivalent inductance as shown in the present invention or FIG. 5 is connected, the gain characteristic in the high frequency range is the original performance of the two-stage filter as shown by the alternate long and short dash line 58. Improved.
- FIG. 7 is a diagram for explaining a case where a short-circuit fault occurs in the capacitor and a short-circuit current flows in the electric vehicle drive control device shown in FIG.
- FIG. 8 is a diagram for explaining a case where a short-circuit failure occurs in the overhead-side capacitor and a short-circuit current flows in the electric vehicle drive control device shown in FIG.
- the filter device 5X having a one-stage configuration, as shown in FIG. 7, even when the inverter 6 or the filter capacitor 52X has a short circuit failure, the filter reactor 51X is sufficiently large. Can be suppressed. Therefore, the circuit breaker 4 can interrupt the short-circuit current before the short-circuit current becomes large enough to operate the higher-order circuit breaker.
- the short-circuit current that flows when the second filter capacitor 52b has a short-circuit failure flows without passing through the first filter reactor 51a, as shown in FIG. Therefore, the second filter reactor 51b and the third filter reactor 51c are responsible for suppressing this short-circuit current.
- the self-inductance L 1 of the first filter reactor 51a, the self-inductance L 2 and the mutual inductance M of the second filter reactor 51b is 1 It becomes 1/4 of the inductance L in the case of the stage configuration.
- This may be considered as follows.
- the number of turns of the first filter reactor 51a and the second filter reactor 51b may be halved as compared with the case of the single stage configuration, and the inductance is proportional to the square of the turn ratio. Therefore, the self inductance and the mutual inductance become 1/4.
- the inductance of the third filter reactor 51c is set to a value that is about the same (substantially equal) to the mutual inductance M, and is about 1/4. Therefore, the sum of the inductance of the second filter reactor 51b and the inductance of the third filter reactor 51c is about 1 ⁇ 2 of that in the case of the one-stage configuration. Therefore, the rate of increase of the current flowing through the second filter capacitor 52b that has caused the short circuit failure is about twice that when the first filter capacitor 52a has a short circuit failure. Therefore, the possibility of operating the circuit breaker on the higher system side than the circuit breaker 4 is higher than when the first filter capacitor 52a is short-circuited. If the circuit breaker on the upper system side is operated, power supply to other electric vehicles is also stopped, which causes a great hindrance to the vehicle operation of the entire railway operator.
- the conventional concept requires that the inductance of the second filter reactor 51b be sufficiently larger than the inductance of the first filter reactor 51a. Become.
- an optimal noise current suppression effect cannot be obtained by making the inductance of the second filter reactor 51b larger than the inductance of the first filter reactor 51a.
- a third filter reactor 51c having a large current capacity is adopted, and the first and first filter capacitors 52b are used. It is conceivable that both of the two filter reactors (51a, 51b) have a large inductance. However, such an idea is not desirable because the filter reactor and the filter capacitor are enlarged.
- a fuse 53 as a circuit disconnection unit connected in series to the second filter capacitor 52b is connected between the intermediate tap 57 and the low potential side bus 55b. Therefore, even if the second filter capacitor 52b, which is a capacitance element connected without having a sufficiently large inductance element, between the overhead line 1 that is a power supply source and a short-circuit failure occurs, the second filter capacitor 52b. There is an effect that the short-circuit current flowing through can be quickly cut off by the fuse 53.
- the main circuit current of the inverter reaches several hundreds A by rating.
- the current rating of the fuse 53 can be made sufficiently small.
- the current rating of the fuse 53 may be set to approximately 1/20 or more and 1/10 or less of the maximum current flowing through the circuit breaker 4, for example. In this case, as soon as the short-circuit current is generated, the fuse 53 can immediately melt and cut off the short-circuit current, so that the influence on the circuit operation on the inverter 6 and the motor 7 can be reduced. Reliability as an electric vehicle system can be improved.
- the fuse 53 when the fuse 53 is blown, it is possible to quickly determine that the second filter capacitor 52b is not a short circuit failure but a failure of the inverter 6 or the motor 7, so that the apparatus can be recovered quickly. There is. Note that it is easy to determine whether or not the fuse 53 is blown, and can be realized by monitoring the voltage across the fuse 53, for example.
- the inductance of the first and second filter reactors (51a, 51b) is not set to a large value even when the filter device has a two-stage configuration, and these Since the values can be set evenly, the filter device can be downsized while ensuring the required filter characteristics.
- the first filter reactor and the second filter reactor are magnetically coupled, so that the number of turns necessary for obtaining the same inductance value is not magnetically coupled.
- the first and second filter reactors can be reduced in size.
- the size of the third filter reactor required by the magnetic coupling is considerably smaller than the first filter reactor and the second filter reactor. Therefore, the effect of downsizing the first and second filter reactors is greater, and the filter device can be downsized as a whole.
- the reason why the size of the third filter reactor is small is that the current flowing is 1/10 or less, so that the wire diameter of the winding can be reduced.
- the noise attenuation characteristic is equivalent to a one-stage filter. For this reason, if measures such as selecting a time zone in which the influence of noise is small are taken, self-running can be performed, and the influence on the railway operator's vehicle operation can be reduced.
- a specific frequency bypass filter having not only a two-stage filter device but also an inductance element and a capacitance element for improving the attenuation rate of noise current in a specific frequency region is sufficiently large between the power supply source and the filter.
- the present invention can also be applied to a case where connection is made without the inductance element, and has the same effect. The above is the same in other embodiments.
- Embodiment 2 the electric vehicle drive control device using the two-stage filter device in which the first filter reactor and the second filter reactor are magnetically coupled is shown.
- a two-stage filter device having a first filter reactor and a second filter reactor that are not magnetically coupled is used.
- FIG. 9 is a diagram illustrating a configuration example of the electric vehicle drive control device according to the second embodiment of the present invention. Only differences from FIG. 1 in the first embodiment will be described.
- the filter device 5F includes a first filter reactor 51f and a second filter reactor 51g that are not magnetically coupled. The inductance values of the first filter reactor 51f and the second filter reactor 51g are the same.
- a fuse 53 and a second filter capacitor 52b are connected in series between a connection point 54F where the first filter reactor 51f and the second filter reactor 51g are connected to the low potential side bus 55b. Since the first filter reactor 51f and the second filter reactor 51g are not magnetically coupled, the filter device 5F does not have a coupling compensation inductance element that compensates for a negative equivalent inductance component due to magnetic coupling.
- the series circuit unit 56F includes a second filter reactor 51g (inductance element), a fuse 53 (circuit cutting unit), and a second filter capacitor 52b (capacitance element) connected in series. At the connection point 54F between the first filter reactor 51f and the second filter reactor 51g, one end of the first filter reactor 51f on the power supply source side of the DC power is connected to the series circuit unit 56F.
- This second embodiment also operates in the same manner as the first embodiment.
- the second filter capacitor 52b is short-circuited because the fuse 53 as a circuit disconnection unit connected in series to the second filter capacitor 52b is connected between the intermediate tap 57 and the low potential side bus 55b.
- the fuse 53 as a circuit disconnection unit connected in series to the second filter capacitor 52b is connected between the intermediate tap 57 and the low potential side bus 55b.
- the first filter reactor 51f and the second filter reactor 51g can have the same inductance value, and the attenuation characteristics in the high frequency range can be increased.
- Embodiment 3 In the filter device, in order to improve the attenuation rate of the noise current in the specific frequency region, for example, a specific frequency bypass filter 50 as shown in FIGS. 10 to 15 may be connected.
- a specific frequency bypass filter 50 as shown in FIGS. 10 to 15 may be connected.
- the filter device 5H shown in FIG. 10 is an example of the case where the specific frequency bypass filter 50 is inserted on the overhead line side of the filter reactor 51X in the one-stage filter device.
- the filter device 5K shown in FIG. 12 is a two-stage filter device using a magnetically coupled filter reactor, and a specific frequency bypass filter 50 is inserted on the overhead line (system) side of the second filter reactor 51b. It is an example of a case.
- the filter device 5N shown in FIG. 12 is an example of the case where the specific frequency bypass filter 50 is inserted on the load side of the first filter reactor 51a.
- the filter device 5P shown in FIG. 14 is a two-stage filter device using a filter reactor that is not magnetically coupled, and the specific frequency bypass filter 50 is provided closer to the overhead line (system) than the second filter reactor 51g. It is an example at the time of inserting.
- the filter device 5Q shown in FIG. 15 is an example of a case where the specific frequency bypass filter 50 is inserted on the load side of the first filter reactor 51f.
- the specific frequency bypass filter 50 includes a fuse 53Z that is a bypass circuit disconnection part, a bypass capacitor 52Z that is a bypass capacitance element, a bypass reactor 51Z that is a bypass inductance element, and a noise current of a specific frequency is prevented from flowing too much.
- the current limiting resistor 58 is connected in series. The inductance value of the bypass reactor 51Z and the capacitance value of the bypass capacitor 52Z are determined from the specific frequency and the magnitude of the flowing noise current.
- the specific frequency bypass filter 50 is also the series circuit unit 56H.
- the fuse 53Z is a circuit cutting part
- the bypass reactor 51Z is also an inductance element of the series circuit part
- the bypass capacitor 52Z is also a capacitance element.
- a connection point 54H at which one end of the first filter reactor 51X on the power supply source side is connected to one end of the series circuit unit 56H is a point at which one end of the fuse 53Z and the first filter reactor 51X are connected.
- the bypass capacitor 52Z and the bypass reactor 51Z are on the low potential side and work is easy, so it is desirable to provide the fuse 53Z on the high potential side.
- the specific frequency bypass filter 50 may also be connected to the system side from the filter reactor 51X or the first and second filter reactors (51a, 51b) depending on the application (FIGS. 10, 12, and 14). Example). In such a case, it is necessary to connect a fuse in series with the capacitor in order to solve the above-described problem of short-circuit current at the time of capacitor failure. By connecting the fuse 53Z in series with the bypass capacitor 52Z, even if the bypass capacitor 52Z is short-circuited, the short-circuit current flowing through the bypass capacitor 52Z can be quickly cut off by the fuse 53Z.
- a configuration in which a fuse is connected is preferable. If the fuse is provided in the specific frequency bypass filter 50, the failure of the filter element of the specific frequency bypass filter 50 and the failure of the inverter 6 can be separated, and the reliability as an electric vehicle system can be improved. Also, there is an effect that the influence on the vehicle operation can be reduced.
- Embodiment 4 FIG. In the fourth embodiment, the relationship between the material of the switching element used in the inverter 6 and the filter characteristics will be described.
- a switching element used for the inverter 6 an element (Si element) made of silicon (Si) is generally used. Recently, however, a switching element made of silicon carbide (SiC) is used instead of the Si element. Devices (SiC devices) are attracting attention.
- the SiC element has excellent characteristics such as a large heat transfer coefficient, operation at a high temperature, and small switching loss even when the switching frequency is increased as compared with the Si element. On the other hand, it is said that the use of SiC elements increases high frequency noise.
- the above-described two-stage filter has a characteristic that the noise attenuation rate on the high frequency side is smaller than that of the one-stage filter, but the noise attenuation factor on the low frequency side is large. Therefore, the increase in the switching frequency by using the SiC element further increases the importance of the filter device of the present embodiment that employs a two-stage filter.
- the two-stage filter as in the present embodiment is excellent in attenuation characteristics on the high frequency side, and therefore matches the recent technical trend of employing SiC elements.
- the SiC element is used as the switching element of the inverter 6 for the filter device of the present embodiment employing the two-stage filter, it is suitable for utilizing the characteristics of the SiC element. You can benefit from it.
- SiC is an example of a semiconductor referred to as a wide bandgap semiconductor, capturing the characteristic that the bandgap is larger than that of Si.
- a semiconductor formed using, for example, a gallium nitride-based material or diamond belongs to the wide band gap semiconductor, and other wide band gap semiconductors other than SiC may be used.
- Embodiments 1 to 3 above are examples of the configuration of the present invention, and can be combined with other known techniques, and can be combined within the scope of the present invention. Needless to say, the configuration may be modified by omitting the unit.
- the description of the invention is carried out for a filter device that is assumed to be applied to an electric vehicle drive control device, but the application field is not limited to this, and the power supply source Filter device which is interposed between a circuit breaker arranged on a high-voltage side DC bus when receiving DC power from the inverter and the inverter, and operates to suppress outflow of noise current from the inverter toward the power supply source side It is possible to apply widely to the structure which has this.
- the present invention is useful as a filter device for an electric vehicle drive control device.
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Abstract
Description
図1は、本発明の実施の形態1に係る電気車駆動制御装置の一構成例を示す図である。実施の形態1に係る電気車駆動制御装置は、主要な構成部として、フィルタ装置5、インバータ6、モータ(誘導電動機または同期電動機)7を備えて構成される。フィルタ装置5は、直流電力の電力供給源側に設けられた遮断器4とインバータ6との間に配置され、第1~第3のフィルタリアクトル(51a~51c)、第1および第2のフィルタコンデンサ(52a,52b)および、回路切断部としてのヒューズ53を備えて構成される。ヒューズ53は、定格電流より大きい電流が流れると溶けて、回路を切る。回路切断部としては、定格電流より大きい電流が流れた場合に回路を切るものであれば、ヒューズでなくてもよい。
・領域(3)の方が領域(2)に比べて、周波数帯域が広い。
・領域(2)の減衰率は制御による減衰が可能な領域である。
実施の形態1では、第1のフィルタリアクトルと第2のフィルタリアクトルが磁気的に結合した2段構成のフィルタ装置を使用した電気車駆動制御装置を示した。この実施の形態2では、磁気的に結合していない第1のフィルタリアクトルと第2のフィルタリアクトルを有する2段構成のフィルタ装置を使用する場合である。
フィルタ装置では、特定周波数領域のノイズ電流の減衰率を改善するため、例えば、図10~図15に示すような特定周波数バイパス用フィルタ50を接続することがある。この場合、特定周波数のノイズ電流をバイパスして除去する特定周波数バイパス用フィルタ50を構成するコンデンサ、リアクトルを適切に選択することにより、減衰させる周波数を特定周波数に合わせ、かつ所望の減衰量を得ることが可能となる。ここで、図10に示すフィルタ装置5Hは、1段構成のフィルタ装置において、フィルタリアクトル51Xよりも架線側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。図11に示すフィルタ装置5Jは、フィルタリアクトル51Xよりも負荷側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。また、図12に示すフィルタ装置5Kは、磁気結合したフィルタリアクトルを使用した2段構成のフィルタ装置において、第2のフィルタリアクトル51bよりも架線(系統)側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。図12に示すフィルタ装置5Nは、第1のフィルタリアクトル51aよりも負荷側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。さらに、図14に示すフィルタ装置5Pは、磁気結合していないフィルタリアクトルを使用した2段構成のフィルタ装置において、第2のフィルタリアクトル51gよりも架線(系統)側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。図15に示すフィルタ装置5Qは、第1のフィルタリアクトル51fよりも負荷側に特定周波数バイパス用フィルタ50を挿入した場合の一例である。
実施の形態4では、インバータ6に用いられるスイッチング素子の素材とフィルタ特性との関係について説明する。インバータ6に用いられるスイッチング素子としては、珪素(Si)を素材とする素子(Si素子)が一般的であるが、最近では、このSi素子に替えて、炭化珪素(SiC)を素材とするスイッチング素子(SiC素子)が注目されている。
Claims (14)
- インバータが発生するノイズ電流を除去するフィルタ装置であって、
前記インバータの直流部と並列に設けられたフィルタコンデンサと、
前記フィルタコンデンサの高電位側と直流電力の電力供給源の間に設けられたフィルタリアクトルと、
電流定格より大きい電流が流れると切になる回路切断部、インダクタンス要素およびキャパシタンス要素とを直列に接続した直列回路部であって、その一端が前記フィルタコンデンサの低電位側に接続され、前記フィルタリアクトルの一端が接続される直列回路部と、
を備えたことを特徴とするフィルタ装置。 - 前記フィルタリアクトルの前記電力供給源側の一端が前記直列回路部に接続する接続点よりも前記電力供給源側に前記インダクタンス要素が設けられ、
前記接続点よりも前記フィルタコンデンサの低電位側に、前記回路切断部と前記キャパシタンス要素が設けられることを特徴とする請求項1に記載のフィルタ装置。 - 前記フィルタリアクトルと前記インダクタンス要素のインダクタンスが略同等の値になることを特徴とする請求項2に記載のフィルタ装置。
- 前記フィルタリアクトルと前記インダクタンス要素とが磁気的に結合されており、
前記キャパシタンス要素および前記回路切断部に直列に接続された結合補償インダクタンス要素を有することを特徴とする請求項2または請求項3に記載のフィルタ装置。 - 前記結合補償インダクタンス要素のインダクタンスが、前記フィルタリアクトルと前記インダクタンス要素との間の相互インダクタンスに略等しいことを特徴とする請求項4に記載のフィルタ装置。
- 中間タップを有する中間タップ付きリアクトルの前記中間タップよりも前記インバータ側が前記フィルタリアクトルであり、
前記中間タップ付きリアクトルの前記中間タップよりも前記電力供給源側が前記インダクタンス要素であることを特徴とする請求項2から請求項5の何れか1項に記載のフィルタ装置。 - 前記回路切断部の前記電流定格は、前記インダクタンス要素を流れる最大電流の1/20以上、かつ、1/10以下であることを特徴とする請求項2から請求項6の何れか1項に記載のフィルタ装置。
- バイパス回路切断部、バイパス用インダクタンス要素およびバイパス用キャパシタンス要素を直列に接続した、特定周波数のノイズ電流を除去する特定周波数バイパス用フィルタを備えることを特徴とする請求項2から請求項7の何れか1項に記載のフィルタ装置。
- 前記直列回路部の他端が前記フィルタリアクトルの一端に接続されることを特徴とする請求項1に記載のフィルタ装置。
- 前記インバータと、請求項1から請求項9の何れか1項に記載のフィルタ装置と、前記インバータによって駆動されるモータと、を備えたことを特徴とする電気車駆動制御装置。
- 前記回路切断部が動作したことを検知した場合であっても、前記インバータによって前記モータを駆動して電気車を推進制御することを特徴とする請求項10に記載の電気車駆動制御装置。
- 前記インダクタンス要素よりも前記電力供給源側に直列に遮断器を備え、
前記回路切断部が動作したことを検知した場合には、前記遮断器を開放することを特徴とする請求項10に記載の電気車駆動制御装置。 - 前記インバータのスイッチング素子がワイドバンドギャップ半導体にて形成されていることを特徴とする請求項10から請求項12の何れか1項に記載の電気車駆動制御装置。
- 前記ワイドバンドギャップ半導体は、炭化ケイ素、窒化ガリウム系材料または、ダイヤモンドを用いた半導体であることを特徴とする請求項13に記載の電気車駆動制御装置。
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EP13874497.4A EP2955846B1 (en) | 2013-02-06 | 2013-02-06 | Filter device and electric rolling stock drive controller |
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PCT/JP2013/052741 WO2014122736A1 (ja) | 2013-02-06 | 2013-02-06 | フィルタ装置および電気車駆動制御装置 |
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WO2016031030A1 (ja) * | 2014-08-28 | 2016-03-03 | 三菱電機株式会社 | 電力変換装置および車両駆動システム |
WO2016031031A1 (ja) * | 2014-08-28 | 2016-03-03 | 三菱電機株式会社 | 電力変換装置および車両駆動システム |
US10033300B2 (en) | 2014-08-28 | 2018-07-24 | Mitsubishi Electric Corporation | Power conversion device and vehicle drive system |
US10148166B2 (en) | 2014-08-28 | 2018-12-04 | Mitsubishi Electric Corporation | Power converter and vehicle driving system |
JP2016052250A (ja) * | 2015-11-19 | 2016-04-11 | 三菱電機株式会社 | 電力変換装置および車両駆動システム |
Also Published As
Publication number | Publication date |
---|---|
US20150357988A1 (en) | 2015-12-10 |
EP2955846B1 (en) | 2020-03-25 |
US9806691B2 (en) | 2017-10-31 |
JPWO2014122736A1 (ja) | 2017-01-26 |
JP5739068B2 (ja) | 2015-06-24 |
EP2955846A4 (en) | 2016-04-27 |
CN104969466A (zh) | 2015-10-07 |
EP2955846A1 (en) | 2015-12-16 |
CN104969466B (zh) | 2018-11-23 |
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