CN114268253B - Direct current series excited motor controller with energy feedback function - Google Patents
Direct current series excited motor controller with energy feedback function Download PDFInfo
- Publication number
- CN114268253B CN114268253B CN202111585510.6A CN202111585510A CN114268253B CN 114268253 B CN114268253 B CN 114268253B CN 202111585510 A CN202111585510 A CN 202111585510A CN 114268253 B CN114268253 B CN 114268253B
- Authority
- CN
- China
- Prior art keywords
- current
- full
- circuit
- bridge circuit
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004804 winding Methods 0.000 claims abstract description 43
- 239000004065 semiconductor Substances 0.000 claims abstract description 22
- 238000011217 control strategy Methods 0.000 claims abstract description 4
- 230000005284 excitation Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
The invention discloses a direct current series excited motor controller with an energy feedback function, and belongs to the technical field of power electronics and motor control. The invention comprises a full-bridge circuit, a follow current circuit, a digital controller and a gate control driving circuit. The digital controller generates a corresponding PWM pulse signal according to a control strategy; the gate control driving circuit is used for controlling the on-off of the semiconductor switching device. The invention replaces a mechanical switch by an electronic switch, realizes the contactless smooth commutation of the direct-current series excited motor, further enables the motor torque and the rotating speed to be adjustable, and realizes the current diversion of the armature winding and the exciting winding feedback current by the follow current circuit, so that the follow current flowing through the follow current diode is reduced when the direct-current series excited motor commutates or is in fault protection, the speed regulation performance of a speed regulation system of the direct-current series excited motor is further obviously improved, the energy density of the controller can be improved, the reliability, the stability and the service life of the controller are enhanced, the dynamic performance of the motor is improved, and the running efficiency of a motor control system is improved.
Description
Technical Field
The invention belongs to the technical field of power electronics and motor control, and relates to a direct current series excited motor controller with an energy feedback function.
Background
The invention belongs to the technical field of power electronics and motor control, and along with the development of the power electronics technology, a new topology and a new algorithm are widely applied to the field of motor control. The direct current series excited motor has the advantages of large starting torque, strong overload capacity, good speed regulation performance, mature control technology and the like. The current commutation control method of the direct current series excited motor is divided into two types, one is to adopt an electromagnetic commutation contactor to realize commutation control, but the method has the following problems. Firstly, the on-off frequency of the electromagnetic reversing contactor is not high, so that the control dynamic performance is poor, and the quick and high-frequency reversing cannot be realized. Meanwhile, when the electromagnetic contactor is operated, the problems of arc discharge, adhesion, ignition and the like are easy to occur, so that the service life of the electromagnetic contactor is short. Secondly, electronic commutation control is adopted, and the diode freewheeling current is overlarge during the electronic commutation control, so that the diode is easy to damage.
The Chinese invention patent application number is: 201210236249.3 discloses a topology structure and control method for electronic commutation. The topology main body adopts a full-bridge structure, adopts a controllable semiconductor switching device, can realize the forward and reverse flow of armature winding current by controlling the switching device, namely realize electronic commutation, and can simultaneously control a switching tube to work in a chopping state by a controller so as to achieve the purpose of controlling the rotating speed and the electromagnetic torque. In order to realize the current follow current of the armature winding and the exciting winding during the commutation, a follow current diode is arranged in the topology, but the armature winding current and the exciting winding current simultaneously pass through the follow current diode during the commutation, so that the follow current diode is easy to damage due to overlarge current under the heavy-load working condition.
Disclosure of Invention
The invention discloses a direct current series excited motor controller with an energy feedback function, which replaces a traditional mechanical switch by an electronic switch, realizes the contactless smooth commutation of a direct current series excited motor, further enables the motor torque and the rotating speed to be adjustable, and realizes the current diversion of feedback current of an armature winding and an exciting winding by a follow current circuit, so that the follow current flowing through a follow current diode is reduced when the direct current series excited motor commutates or is in fault protection, the speed regulation performance of a speed regulation system of the direct current series excited motor is further obviously improved, the energy density of the controller can be improved, the reliability, the stability and the service life of the controller are enhanced, the dynamic performance of the motor is improved, and the running efficiency of a motor control system is improved.
The invention aims at realizing the following technical scheme:
The invention discloses a direct current series excited motor controller with an energy feedback function, which comprises a full-bridge circuit, a follow current circuit, a digital controller and a gate control driving circuit. The digital controller is connected with the gate control driving circuit, generates a corresponding PWM pulse signal according to a control strategy and transmits the PWM pulse signal to the gate control driving circuit; and the gate control driving circuit amplifies the power of the PWM pulse signal from the digital controller and transmits the amplified PWM pulse signal to the full-bridge circuit for realizing the on-off control of the semiconductor switching device. The freewheeling circuit is connected with the full-bridge circuit in series, one non-series end of the full-bridge circuit is connected with the positive electrode of the power supply, and one non-series end of the freewheeling circuit is connected with the negative electrode of the power supply. The full-bridge circuit is used for realizing the contactless smooth commutation of the direct-current series excited motor, so that the motor torque and the rotating speed can be adjusted; in addition, the current distribution of feedback current of the armature winding La and the exciting winding Lm is realized through the follow current circuit, so that the follow current flowing through the follow current diode is reduced during the commutation or fault protection of the direct current series excited motor, the speed regulation performance of a speed regulation system of the direct current series excited motor is further remarkably improved, and the reliability, the stability and the service life of the controller can be enhanced. The continuous current circuit is connected with the full-bridge circuit in series, so that the dynamic performance of the motor is improved, and the running efficiency of a motor control system is improved.
Preferably, the full-bridge circuit is an H-bridge circuit formed by controllable semiconductor switching devices, and the controllable semiconductor switching devices are controlled to be on or off by the gate control driving circuit; the full-bridge circuit can realize bidirectional flow of current in the bridge, namely realize contactless smooth commutation of the direct-current series excited motor, so that the motor torque and the rotating speed can be adjusted; one end of the full-bridge circuit is connected with the positive electrode of the power supply, the other end of the full-bridge circuit is connected with the follow current circuit, and meanwhile, two output ends of the full-bridge circuit are connected with the armature winding La of the direct current series excited motor; the freewheeling circuit consists of freewheeling diodes D1, D2 and D3, wherein anodes of the freewheeling diodes D3 and D2 are connected with a negative end of a power supply, the freewheeling diode D2 is connected with an excitation winding Lm of the direct current series excited motor in parallel, and a cathode of the freewheeling diode D2 is connected with one end of the excitation winding and then is connected with a cathode of the freewheeling diode D1; the cathode of the D3 freewheeling diode is connected with one end of the full-bridge circuit. The feedback current of the armature winding La is freewheeled through the freewheeling diode D3, the feedback current of the exciting winding Lm is freewheeled through the freewheeling diode D2, the diode D1 realizes the split flow of the feedback current of the armature winding and the exciting winding, the current flowing through the freewheeling diode is reduced, and the freewheeling diode is not easy to damage due to overcurrent.
Preferably, the digital controller can realize electronic commutation and torque control of the direct current series excited motor; in the full-bridge circuit, the current flow direction of an armature winding La is opposite to that of an armature winding La when the semiconductor switching devices S1 and S4 are controlled to be conducted, and the forward and reverse control of electromagnetic torque is realized; meanwhile, the rotation speed control is realized by controlling the corresponding semiconductor switching device of the full-bridge circuit to be in a chopping state.
Preferably, the semiconductor switching device in the full-bridge circuit comprises one or more of MOSFET, IGBT, GTO, IGCT, thyristors and triodes.
The beneficial effects are that:
1. According to the DC series excited machine controller with the energy feedback function, the feedback current of the armature winding La and the exciting winding Lm is split through the follow current circuit, so that the follow current flowing through the follow current diode is reduced during the commutation or fault protection of the DC series excited machine, the speed regulation performance of a speed regulation system of the DC series excited machine is further remarkably improved, and the reliability, the stability and the service life of the controller can be enhanced.
2. The invention discloses a direct current series excited motor controller with an energy feedback function, which replaces a traditional mechanical switch by an electronic switch, wherein a full-bridge circuit is of an H-bridge topological structure, four semiconductor controllable switching devices are adopted to realize the non-contact smooth commutation of the direct current series excited motor, and meanwhile, the digital controller controls the semiconductor controllable switching devices to realize the non-contact smooth commutation and the control of motor rotating speed and electromagnetic torque.
3. The direct current series excited motor controller with the energy feedback function disclosed by the invention has the beneficial effects 1 and 2 that the motor dynamic performance and the operation efficiency of a motor control system are improved by connecting the follow current circuit with the full-bridge circuit in series.
Drawings
FIG. 1 is a topology diagram of a DC series motor controller with energy feedback according to the present invention;
FIG. 2 is a schematic diagram of a feedback current and an exciting current flow direction of a DC series motor controller with energy feedback function according to the present invention during commutation;
FIG. 3 is a schematic diagram of another feedback current and exciting current flow direction of a DC series motor controller with energy feedback function according to the present invention during commutation;
In the figure: in fig. 2, the feedback current ia1 and the exciting current im flow in the directions indicated by arrows, in fig. 3, the feedback current ia2 and the exciting current im flow in the directions indicated by arrows, the red line is a feedback current freewheeling circuit, and the green line is a freewheeling circuit of the exciting current im.
Detailed Description
The embodiment of fig. 1 discloses a dc series motor controller with an energy feedback function, which comprises a full-bridge circuit, a follow current circuit, a digital controller and a gate control driving circuit. The digital controller is connected with the gate driving circuit, generates corresponding PWM pulse signals according to a control strategy and transmits the corresponding PWM pulse signals to the gate driving circuit, and adopts a controller with an A/D acquisition function and at least six paths of PWM peripheral modules, such as TMS320F281X, TMS F28335 of TI company, ST (schematic semiconductor) series controllers and the like; and the gate control driving circuit amplifies the power of the PWM pulse signal from the digital controller and transmits the amplified PWM pulse signal to the full-bridge circuit for realizing the on-off control of the semiconductor switching device. The full-bridge circuit is of an H-bridge topological structure, and one or more of MOSFET, IGBT, GTO, IGCT, thyristors and triodes can be adopted as the semiconductor controllable switching device in the full-bridge circuit. And a freewheeling diode in the freewheeling circuit is combined with rated current of an actual direct current series excited motor and the voltage withstand and overcurrent capacity of the freewheeling diode. The freewheeling circuit is connected with the full-bridge circuit in series, one non-series end of the full-bridge circuit is connected with the positive electrode of the power supply, and one non-series end of the freewheeling circuit is connected with the negative electrode of the power supply. The full-bridge circuit is used for realizing the contactless smooth commutation of the direct-current series excited motor, so that the motor torque and the rotating speed can be adjusted; in addition, the current feedback of the armature winding La and the exciting winding Lm is split by a follow current circuit.
Through the structure, the non-contact smooth reversing of the direct current series excited motor speed regulating system and the closed-loop control of the rotating speed and the torque can be realized. The principles and features of the present invention are described in detail below with reference to the accompanying drawings.
As shown in fig. 1, in the full-bridge circuit, if the semiconductor switching devices S1 and S4 are turned on and the semiconductor switching devices S2 and S3 are turned off, the motor is in a forward driving state if the current polarity of the armature winding of the motor is defined to be positive. When the S1 and the S4 are turned off and the S2 and the S3 are turned on, the polarity of the current of the armature winding La of the motor is defined to be negative, and the motor is in a reverse driving state, so that the conduction of the semiconductor switching device can be controlled by the digital controller to realize the control of the electromagnetic torque and the steering of the motor.
The control of the motor rotation speed can adopt a chopping control method, taking the conduction of S1 and S4 as an example, the conduction of S1 is kept, and the S4 is in a PWM chopping state, so that the duty ratio of the S4 can be controlled to realize the real-time adjustment of the electromagnetic torque, and the purpose of rotation speed control can be realized. Similarly, S4 can be kept on and S1 can be in PWM chopping state. The control methods of S2 and S3 are similarly available in the reverse driving state.
Fig. 2 and 3 are schematic diagrams showing feedback current and exciting current flow directions of a dc series motor controller with an energy feedback function during commutation. In fig. 2, when all of S1, S2, S3, and S4 are in the off state, a loop is required for the armature winding La current ia1 to achieve freewheeling and energy feedback, the freewheeling loop is shown as red line in the drawing, at this time, the feedback current ia1 of the armature winding La flows through the body diodes S3 and S2 and the freewheeling diode D3, and the exciting winding Lm current im flows through the freewheeling diode D2, and the diode D1 prevents the current ia1 from flowing through the freewheeling diode D2, so as to achieve shunt, so that the dc series excited machine controller with energy feedback function of the present invention can bear larger current in the feedback state, correspondingly improve energy density and reliability, and in fig. 3, the armature winding La current ia2 flows in the opposite direction to the armature winding current ia1 in fig. 2.
In summary, the dc series motor controller with the energy feedback function disclosed in this embodiment can realize the rotational speed and torque control of the dc series motor and contactless smooth commutation, and meanwhile, the armature winding La feeds back energy to the power supply during commutation, that is, energy feedback is realized, and the overall reliability and dynamic characteristics of the system are improved.
While the foregoing detailed description has described the objects, aspects and advantages of the invention in further detail, it should be understood that the foregoing description is only illustrative of the invention, and is intended to cover various modifications, equivalents, alternatives, and improvements within the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a take energy feedback function's direct current series excited machine controller which characterized in that: the full-bridge circuit comprises a full-bridge circuit, a follow current circuit, a digital controller and a gate control driving circuit; the digital controller is connected with the gate control driving circuit, generates a corresponding PWM pulse signal according to a control strategy and transmits the PWM pulse signal to the gate control driving circuit; the gate control driving circuit amplifies the power of PWM pulse signals from the digital controller and transmits the amplified PWM pulse signals to the full-bridge circuit for realizing the on-off control of the semiconductor switching device; the freewheeling circuit is connected with the full-bridge circuit in series, one non-series end of the full-bridge circuit is connected with the positive electrode of the power supply, and one non-series end of the freewheeling circuit is connected with the negative electrode of the power supply; the full-bridge circuit is an H-bridge circuit formed by controllable semiconductor switching devices, and the controllable semiconductor switching devices are controlled to be switched on and switched off by the gate control driving circuit; the full-bridge circuit can realize bidirectional flow of current in the bridge, namely realize contactless smooth commutation of the direct-current series excited motor, so that the motor torque and the rotating speed can be adjusted; one end of the full-bridge circuit is connected with the positive electrode of the power supply, the other end of the full-bridge circuit is connected with the follow current circuit, and meanwhile, two output ends of the full-bridge circuit are connected with the armature winding La of the direct current series excited motor; the freewheeling circuit consists of freewheeling diodes D1, D2 and D3, wherein anodes of the freewheeling diodes D3 and D2 are connected with a negative end of a power supply, the freewheeling diode D2 is connected with an excitation winding Lm of the direct current series excited motor in parallel, and a cathode of the freewheeling diode D2 is connected with one end of the excitation winding and then is connected with a cathode of the freewheeling diode D1; the cathode of the D3 freewheeling diode is connected with one end of the full-bridge circuit; the feedback current of the armature winding La is freewheeled through a freewheeling diode D3, the feedback current of the exciting winding Lm is freewheeled through a freewheeling diode D2, the diode D1 realizes the split flow of the feedback current of the armature winding and the exciting winding, and the current flowing through the freewheeling diode is reduced, so that the freewheeling diode is not easy to damage due to overcurrent; the full-bridge circuit is used for realizing the contactless smooth commutation of the direct-current series excited motor, so that the motor torque and the rotating speed can be adjusted; in addition, the current feedback of the armature winding La and the exciting winding Lm is split by the follow current circuit, so that the follow current flowing through the follow current diode is reduced when the direct current series excited motor commutates or is in fault protection.
2. The dc series motor controller with energy feedback function of claim 1, wherein: the digital controller can realize electronic commutation and torque control of the direct current series excited motor; in the full-bridge circuit, the current flow direction of the armature winding La is opposite to that of the armature winding La when the semiconductor switching devices S1 and S4 are controlled to be conducted, namely the forward and reverse control of electromagnetic torque is realized; meanwhile, the rotation speed control is realized by controlling the corresponding semiconductor switching device of the full-bridge circuit to be in a chopping state.
3. The dc series motor controller with energy feedback function of claim 1, wherein: the semiconductor switching device in the full-bridge circuit comprises one or more of MOSFET, IGBT, GTO, IGCT, thyristors and triodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585510.6A CN114268253B (en) | 2021-12-20 | 2021-12-20 | Direct current series excited motor controller with energy feedback function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585510.6A CN114268253B (en) | 2021-12-20 | 2021-12-20 | Direct current series excited motor controller with energy feedback function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114268253A CN114268253A (en) | 2022-04-01 |
| CN114268253B true CN114268253B (en) | 2024-08-09 |
Family
ID=80829224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111585510.6A Active CN114268253B (en) | 2021-12-20 | 2021-12-20 | Direct current series excited motor controller with energy feedback function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114268253B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH412080A (en) * | 1962-09-28 | 1966-04-30 | Licentia Gmbh | Arrangement for regenerative braking of a series motor |
| CN103312239A (en) * | 2013-06-17 | 2013-09-18 | 扬州大得机电科技有限公司 | Series direct-current motor four-switch topological device and control method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1379512A (en) * | 1970-10-22 | 1975-01-02 | Sevcon Ltd | Control systems for dc motors |
| GB1550198A (en) * | 1977-03-24 | 1979-08-08 | Lansing Bagnall Ltd | Control circuit for direct current electric motors |
| US4384240A (en) * | 1980-03-18 | 1983-05-17 | Technical Operations Limited | Regenerative braking system for three-terminal d.c. motor |
| CN103546079B (en) * | 2012-07-10 | 2017-02-08 | 北京友信宏科电子科技有限公司 | Novel method and novel device for controlling series excited motor |
| CN104283466A (en) * | 2013-07-05 | 2015-01-14 | 北京友信宏科电子科技有限公司 | Method and device for controlling novel series machine |
| CN111342711A (en) * | 2018-12-19 | 2020-06-26 | 坦帕机电(常州)有限公司 | Electronic commutation brake control system of double series motor |
| CN109546906B (en) * | 2018-12-28 | 2021-04-02 | 武汉征原电气有限公司 | Direct current series excited motor control system and method |
| CN113489418B (en) * | 2021-06-30 | 2023-01-24 | 南京航空航天大学 | An electric excitation doubly salient motor driving and charging integrated system with energy feedback and its control method |
-
2021
- 2021-12-20 CN CN202111585510.6A patent/CN114268253B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH412080A (en) * | 1962-09-28 | 1966-04-30 | Licentia Gmbh | Arrangement for regenerative braking of a series motor |
| CN103312239A (en) * | 2013-06-17 | 2013-09-18 | 扬州大得机电科技有限公司 | Series direct-current motor four-switch topological device and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114268253A (en) | 2022-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105871212A (en) | Power conversion device applied to high-speed flywheel energy storage system | |
| CN103546079A (en) | Novel method and novel device for controlling series excited motor | |
| CN110829906B (en) | Rapid braking control system and control method for three-phase switch reluctance motor | |
| CN113630059B (en) | Multi-level power converter for switched reluctance motor | |
| CN105322838A (en) | Three-level motor power converter for realizing rapid demagnetization | |
| CN112003539B (en) | A front-end integrated multi-port power converter for switched reluctance motor | |
| CN103326390B (en) | Dual-singlechip flywheel energy storage system controller and control method | |
| CN113364388A (en) | Drive reconstruction type circuit based on SRM and vehicle-mounted integrated charging and feeding system | |
| CN104638990B (en) | A kind of asymmetric exciting method of single coil multi-phase magnetic suspension switch reluctance generator | |
| CN113890434B (en) | Electro-magnetic doubly salient motor for realizing fault-tolerant control of excitation converter through dynamic switching | |
| CN104518717A (en) | Direct current speed regulator of series-excited motor | |
| CN115333212A (en) | Switched reluctance motor circuit integrating multiple charging modes and control method thereof | |
| CN205753988U (en) | A kind of power-converting device being applied to High-Speed Flywheel Energy Storage System | |
| CN114268253B (en) | Direct current series excited motor controller with energy feedback function | |
| CN109546906B (en) | Direct current series excited motor control system and method | |
| CN107769628B (en) | A method and device for suppressing torque ripple of a permanent magnet brushless DC motor | |
| CN210927489U (en) | Three-phase switch reluctance motor fast braking control system | |
| CN209767424U (en) | Two-gear motor winding switching device | |
| CN210080918U (en) | Double-pulse MIG welding power supply based on SiC power device | |
| CN114553079B (en) | Voltage-adjustable switched reluctance generator power converter and control method thereof | |
| CN113131803B (en) | A low-cost power converter for switched reluctance motor and its control strategy | |
| CN219227460U (en) | Motor speed regulator | |
| CN101741292B (en) | Motor control system capable of realizing high-efficiency recovery of kinetic energy and control method thereof | |
| CN104283466A (en) | Method and device for controlling novel series machine | |
| CN110212825B (en) | Self-changing generating voltage self-charging switched reluctance generator current transformation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |