CN104709101B - drive device and vehicle - Google Patents
drive device and vehicle Download PDFInfo
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- CN104709101B CN104709101B CN201310695266.8A CN201310695266A CN104709101B CN 104709101 B CN104709101 B CN 104709101B CN 201310695266 A CN201310695266 A CN 201310695266A CN 104709101 B CN104709101 B CN 104709101B
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- quadrant rectifier
- alternating current
- direct current
- generator
- traction motor
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- 239000003990 capacitor Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T10/72—Electric energy management in electromobility
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a drive device and a vehicle. The drive device comprises a generator, a four-quadrant rectifier, an adjusting circuit and a traction motor which are sequentially connected. The four-quadrant rectifier is used for converting the current rectification working state into a contravariant working state according to the received brake control command. The traction motor is used for generating first alternating current according to power at the drive end of the traction motor when the four-quadrant rectifier is in the contravariant working state. The adjusting circuit is used for converting the first alternating current into first direct current and transmitting the direct current to the four-quadrant rectifier. The four-quadrant rectifier is further used for converting the first direct current into second alternating current. The generator is used for receiving the second alternating current and outputting power according to the second alternating current. According to the technical scheme, electric brake can be achieved through the drive device, the use times of mechanical brake can be reduced effectively.
Description
Technical Field
The invention relates to the field of vehicle drive control, in particular to a driving device and a vehicle.
Background
At present, an internal combustion driving device generally adopts a structure of a diesel engine, a synchronous generator, a diode rectifier, an inverter and a traction motor which are connected in sequence. The working principle is as follows: the diesel engine drives the synchronous generator to generate three-phase synchronous alternating current, and the diode rectifier rectifies the received three-phase alternating current to generate direct current. The inverter inverts the received direct current into three-phase variable-frequency voltage-regulating alternating current so as to supply the three-phase variable-frequency voltage-regulating alternating current to the traction motor to output driving force for driving a driving wheel of the vehicle.
The diode rectifier in the existing structure only has a rectifying function, namely, the existing internal combustion driving device can only output driving force in a single direction. When the vehicle driving wheel needs to be braked, the driving device with the existing structure cannot play any role in assisting in braking, and a mechanical braking mode is still needed to brake the vehicle driving wheel. The more times a mechanical brake is applied, the longer the service life of the brake shoe or pad is.
Disclosure of Invention
The invention provides a driving device and a vehicle, which are used for realizing electric braking.
One aspect of the present invention provides a driving apparatus including: the four-quadrant rectifier, the regulating circuit and the traction motor are connected in sequence; wherein,
the four-quadrant rectifier is used for switching the current rectification working state into an inversion working state according to the received brake control instruction;
the traction motor is used for generating corresponding first alternating current according to the power of the driving end of the traction motor when the four-quadrant rectifier is in the inversion working state;
the regulating circuit is used for converting the first alternating current into a first direct current and transmitting the direct current to the four-quadrant rectifier;
the four-quadrant rectifier is further used for converting the first direct current into a second alternating current;
and the generator is used for receiving the second alternating current and outputting corresponding power according to the second alternating current.
Another aspect of the present invention provides a vehicle including a driving apparatus, wherein: the four-quadrant rectifier, the regulating circuit and the traction motor are connected in sequence; wherein,
the four-quadrant rectifier is used for switching the current rectification working state into an inversion working state according to the received brake control instruction;
the traction motor is used for generating corresponding first alternating current according to the power of the driving end of the traction motor when the four-quadrant rectifier is in the inversion working state;
the regulating circuit is used for converting the first alternating current into a first direct current and transmitting the direct current to the four-quadrant rectifier;
the four-quadrant rectifier is further used for converting the first direct current into a second alternating current;
and the generator is used for receiving the second alternating current and outputting corresponding power according to the second alternating current.
According to the technical scheme, the four-quadrant rectifier is arranged, so that bidirectional energy transmission of the driving device can be achieved, namely the generator in the driving device can only work under the working condition of the generator in the prior art, and can work under the working condition of the generator and the working condition of the motor, and the traction motor can only work under the working condition of the motor in the prior art, and can work under the working condition of the motor and the working condition of the generator. When the traction motor works under the working condition of the generator, the traction motor generates alternating current according to mechanical power of a driving wheel of the vehicle and feeds the alternating current back to the generator, so that partial mechanical energy of the driving wheel of the vehicle is converted into electric energy and fed back to the generator, and electric braking is further realized. With the help of electric braking, the use times of mechanical braking can be reduced, and the service life of the brake shoe or brake pad can be effectively prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a driving device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an implementation of the adjusting circuit in the driving apparatus according to the first embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a driving device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a vehicle provided with a driving device according to a second embodiment of the present invention.
Detailed Description
As shown in fig. 1, a schematic structural diagram of a driving device according to a first embodiment of the present invention is provided. As shown in fig. 1, the driving device according to the first embodiment includes: the four-quadrant rectifier comprises a generator 10, a four-quadrant rectifier 20, a regulating circuit 30 and a traction motor 40 which are connected in sequence. The four-quadrant rectifier 20 is configured to switch a current rectification operating state to an inversion operating state according to a received brake control command. The traction motor 40 is configured to generate a corresponding first alternating current according to power at the driving end of the traction motor 40 when the four-quadrant rectifier is in the inversion working state. The regulating circuit 30 is configured to convert the first alternating current into a first direct current and transmit the direct current to the four-quadrant rectifier. The four-quadrant rectifier 20 is also used to convert the first direct current into a second alternating current. The generator 10 is configured to receive the second alternating current and output corresponding power according to the second alternating current.
The four-quadrant rectifier is an Alternating Current (AC) -Direct Current (DC) power conversion system, and particularly can be formed by connecting a silicon controlled rectifier element and a rectifying element in an anti-parallel mode and convert AC into DC. Compared with a diode rectifier circuit in the prior art, each bridge arm of the four-quadrant rectifier is provided with a controllable element, so that the switching of working states, namely the switching of a rectification working state and an inversion working state, can be realized; in addition, the four-quadrant rectifier may adopt a PWM (Pulse Width Modulation) control technique.
The type of the generator 10 in the embodiment of the present invention may be various, the present invention is not particularly limited, and the generator may be an asynchronous generator in specific implementation. By way of example, an asynchronous generator is an alternator that uses the rotating magnetic field of the air gap between the stator and rotor to interact with the induced current in the rotor windings. When the rotor is driven by a steam turbine rotor to rotate, the stator coil is enabled to cut the magnetic lines of force, and induced electromotive force (induced voltage) is generated in the stator coil, so that a generator generates electricity. The asynchronous generator rotor is a non-salient pole synchronous generator without a rotor winding of a synchronous generator, so that the efficiency is higher than that of a synchronous generator with the same capacity and the same rotating speed. Meanwhile, the asynchronous generator has no collecting ring, no brush and no rotor excitation winding, so the maintenance and operation cost is low.
And controlling the controllable elements on the controllable bridge arms of the four-quadrant rectifier to enable the four-quadrant rectifier to be in a rectification working state or an inversion working state. The four-quadrant rectifier has the functions of switching, rectifying and inverting. The switching action of the four-quadrant rectifier is embodied in all four quadrants and is completed by a controllable bridge arm and a diode bridge arm together. When the four-quadrant rectifier plays a role of rectification in the transmission direction of energy, the energy is transmitted from the alternating current side to the direct current side through the converter; when the four-quadrant rectifier has an inversion function, the reactive power required by the inductor L is provided from the direct current intermediate link through the rectifier, namely, the energy is transmitted to the alternating current input loop.
Here, it should be noted that: when the generator described in this embodiment is in a power generation condition, that is, when the generator operates in a condition of converting rotational power into alternating current, power of the power end of the generator may be provided by an internal combustion engine, such as a diesel engine.
The embodiment of the invention can realize bidirectional energy transmission of the driving device by arranging the four-quadrant rectifier, namely, the generator in the driving device can only work under the working condition of the generator in the prior art and can work under the working condition of the generator and the working condition of the motor, and the traction motor can only work under the working condition of the motor in the prior art and can work under the working condition of the motor and the working condition of the generator. When the traction motor works under the working condition of the generator, the traction motor generates alternating current according to mechanical power of a driving wheel of the vehicle and feeds the alternating current back to the generator, so that partial mechanical energy of the driving wheel of the vehicle is converted into electric energy and fed back to the generator, and electric braking is further realized. With the help of electric braking, the use times of mechanical braking can be reduced, and the service life of the brake shoe or brake pad can be effectively prolonged.
Further, in the driving apparatus provided in the first embodiment of the present invention, the adjusting circuit may be implemented by using the structure shown in fig. 2. Specifically, the adjusting circuit includes: an intermediate dc circuit 31 and an inverter 32. As shown in fig. 2, the four-quadrant rectifier 20, the intermediate dc circuit 31, the inverter 32, and the traction motor 40 are connected in series. Wherein the inverter 32 is configured to convert the first alternating current into a second direct current. The intermediate dc circuit 31 is configured to convert the second dc power into the first dc power.
More specifically, the intermediate dc circuit described above can be implemented using the circuit shown in fig. 3. As shown in the schematic circuit diagram of the driving apparatus shown in fig. 3, the intermediate dc circuit 31 includes: a support capacitor 311, a voltage limiting resistor 312 and a chopper circuit 313. Two ends of the supporting capacitor 311 are respectively connected with two connection ends of the four-quadrant rectifier 20; two ends of the chopper circuit 313 are respectively connected with two connecting ends of the four-quadrant rectifier 20; one end of the voltage limiting resistor 312 is connected to the chopper circuit 313, and the other end is connected to one connection end of the four-quadrant rectifier 20.
Wherein the support capacitor 311 is used for reactive power conversion between the four-quadrant rectifier 20 and the inverter 32; in specific implementation, the four-quadrant rectifier 20 is used for rectifying the three-phase alternating current generated by the generator 10 and outputting a regulated direct current. In the embodiment, the supporting capacitor 311 may be a DC supporting capacitor, which is also called a DC-Link capacitor, and belongs to a passive device. The DC support capacitor is mainly formed by adopting a polypropylene film medium DC support capacitor, and the output voltage of a rectifier is mainly subjected to smooth filtering in an inverter circuit.
Because the four-quadrant rectifier 20 outputs the regulated direct current, the supporting capacitor 311 does not need to work due to unstable fluctuation of the direct current voltage to keep the fluctuated direct current voltage within a stable allowable range, and further, when the supporting capacitor 311 smoothly filters the output voltage of the four-quadrant rectifier 20, no power loss exists, so that the reactive power conversion of the supporting capacitor 311 between the four-quadrant rectifier 20 and the inverter 32 is realized. In a braking operation, the traction motor feeds back a current to the inverter 32 to increase a dc voltage of the inverter 32, and the chopper circuit 313 and the voltage limiting resistor 312 are used to maintain the increased dc voltage within a constant range. The chopper circuit 313 and the voltage limiting resistor 312 function in the circuit to suppress the voltage at the dc terminal from being too high due to regenerative energy. The chopper circuit 313 is used for controllably reducing the direct-current voltage to control the discharge power and stabilize the voltage of the direct-current end; the voltage limiting resistor 312 dissipates the energy discharged from the chopper circuit 313 in the form of heat generation.
Still further, as shown in fig. 3, the driving apparatus described in the above embodiment further includes a voltage converter 50. Two ends of the voltage converter 50 are respectively connected with two connection ends of the four-quadrant rectifier 20. The voltage converter 50 is used for converting the voltages of the two connection terminals of the four-quadrant rectifier 20 into a set voltage. The setting voltage may be specifically set according to actual needs, and the embodiment of the present invention is not particularly limited.
In particular, in practical applications, the voltage converter may be connected to a battery pack for providing the required dc power to the battery. The electric quantity of the storage battery can be used for supplying power to the variable-frequency starting device or supplying power to other direct-current loads on the vehicle. The voltage converter is used for converting current generated by regenerative braking into direct current required by the storage battery pack through the voltage converter when the driving device works in a braking working condition.
As shown in fig. 4, a schematic structural diagram of a vehicle according to a second embodiment of the present invention is provided. As shown in fig. 4, the vehicle according to the second embodiment includes: a drive device. The driving device described in this embodiment may adopt the driving device provided in the first embodiment. As shown in fig. 1, the driving apparatus includes: the four-quadrant rectifier comprises a generator 10, a four-quadrant rectifier 20, a regulating circuit 30 and a traction motor 40 which are connected in sequence. The four-quadrant rectifier 20 is configured to switch a current rectification operating state to an inversion operating state according to a received brake control command. The traction motor 40 is used for generating a first alternating current according to the power at the driving end of the traction motor 40 when the four-quadrant rectifier 20 is in the inversion working state; the regulating circuit 30 is configured to convert the first alternating current into a first direct current and transmit the direct current to the four-quadrant rectifier 20. The four-quadrant rectifier 20 is also used to convert the first direct current into a second alternating current. The generator 10 is configured to receive the second alternating current and output power according to the second alternating current.
The embodiment of the invention can realize bidirectional energy transmission of the driving device by arranging the four-quadrant rectifier, namely, the generator in the driving device can only work under the working condition of the generator in the prior art and can work under the working condition of the generator and the working condition of the motor, and the traction motor can only work under the working condition of the motor in the prior art and can work under the working condition of the motor and the working condition of the generator. When the traction motor works under the working condition of the generator, the traction motor generates alternating current according to mechanical power of a driving wheel of the vehicle and feeds the alternating current back to the generator, so that partial mechanical energy of the driving wheel of the vehicle is converted into electric energy and fed back to the generator, and electric braking is further realized. With the help of electric braking, the use times of mechanical braking can be reduced, and the service life of the brake shoe or brake pad can be effectively prolonged.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A drive device, comprising: the four-quadrant rectifier, the regulating circuit and the traction motor are connected in sequence; wherein,
the four-quadrant rectifier is used for switching the current rectification working state into an inversion working state according to the received brake control instruction;
the traction motor is used for generating first alternating current according to the power of the driving end of the traction motor when the four-quadrant rectifier is in the inversion working state;
the regulating circuit is used for converting the first alternating current into a first direct current and transmitting the direct current to the four-quadrant rectifier;
the four-quadrant rectifier is further used for converting the first direct current into a second alternating current;
the generator is used for receiving the second alternating current and outputting power according to the second alternating current.
2. The driving device according to claim 1, wherein the adjustment circuit comprises: the four-quadrant rectifier, the middle direct current circuit, the inverter and the traction motor are sequentially connected; wherein,
the inverter is used for converting the first alternating current into a second direct current;
the intermediate direct current circuit is used for converting the second direct current into the first direct current.
3. The driving apparatus according to claim 2, wherein the intermediate dc circuit comprises: the support capacitor, the voltage limiting resistor and the chopper circuit;
two ends of the supporting capacitor are respectively connected with two connecting ends of the four-quadrant rectifier;
two ends of the chopper circuit are respectively connected with two connecting ends of the four-quadrant rectifier;
one end of the voltage limiting resistor is connected with the chopper circuit, and the other end of the voltage limiting resistor is connected with one connecting end of the four-quadrant rectifier.
4. The drive device according to any one of claims 1 to 3, further comprising: two ends of the voltage converter are respectively connected with two connecting ends of the four-quadrant rectifier,
and the voltage converter is used for converting the voltages of the two connecting ends of the four-quadrant rectifier into set voltages.
5. A drive arrangement according to any one of claims 1 to 3 wherein the generator is an asynchronous generator.
6. A vehicle comprising the drive device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695266.8A CN104709101B (en) | 2013-12-17 | 2013-12-17 | drive device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310695266.8A CN104709101B (en) | 2013-12-17 | 2013-12-17 | drive device and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104709101A CN104709101A (en) | 2015-06-17 |
| CN104709101B true CN104709101B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310695266.8A Active CN104709101B (en) | 2013-12-17 | 2013-12-17 | drive device and vehicle |
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| Country | Link |
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| CN (1) | CN104709101B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109177748A (en) * | 2018-08-21 | 2019-01-11 | 中车大连机车车辆有限公司 | Hybrid vehicle transmission |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB766855A (en) * | 1954-02-20 | 1957-01-23 | Mijnssen & Co N V | An improved single-phase alternating current fed driving arrangement for electric traction |
| CN102627109A (en) * | 2012-04-19 | 2012-08-08 | 南车株洲电力机车有限公司 | Battery control circuit for double-electrical-energy locomotive |
| CN203119724U (en) * | 2013-01-08 | 2013-08-07 | 济南吉美乐电源技术有限公司 | Four-phase doubly salient electro-magnetic generator of two-phase rectification and superposition double exciting winding |
| CN203318183U (en) * | 2013-06-24 | 2013-12-04 | 长春轨道客车股份有限公司 | Contact grid and power pack hybrid power supply motor train unit traction system |
| CN203637592U (en) * | 2013-12-17 | 2014-06-11 | 北车大连电力牵引研发中心有限公司 | Driving device and vehicle |
-
2013
- 2013-12-17 CN CN201310695266.8A patent/CN104709101B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB766855A (en) * | 1954-02-20 | 1957-01-23 | Mijnssen & Co N V | An improved single-phase alternating current fed driving arrangement for electric traction |
| CN102627109A (en) * | 2012-04-19 | 2012-08-08 | 南车株洲电力机车有限公司 | Battery control circuit for double-electrical-energy locomotive |
| CN203119724U (en) * | 2013-01-08 | 2013-08-07 | 济南吉美乐电源技术有限公司 | Four-phase doubly salient electro-magnetic generator of two-phase rectification and superposition double exciting winding |
| CN203318183U (en) * | 2013-06-24 | 2013-12-04 | 长春轨道客车股份有限公司 | Contact grid and power pack hybrid power supply motor train unit traction system |
| CN203637592U (en) * | 2013-12-17 | 2014-06-11 | 北车大连电力牵引研发中心有限公司 | Driving device and vehicle |
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| CN104709101A (en) | 2015-06-17 |
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Address after: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Applicant after: CRRC DALIAN ELECTRIC TRACTION R & D CENTER CO., LTD. Address before: 116045 Liaoning province Dalian City Lushun Economic Development Zone Dalian Hao Yang No. 1 North Street Applicant before: Co., Ltd of Bei Che Dalian Electric Traction R & D Center |
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