CN114884429A - Switched reluctance motor capacitance energy storage type multi-level topology and control method thereof - Google Patents
Switched reluctance motor capacitance energy storage type multi-level topology and control method thereof Download PDFInfo
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- CN114884429A CN114884429A CN202210533185.7A CN202210533185A CN114884429A CN 114884429 A CN114884429 A CN 114884429A CN 202210533185 A CN202210533185 A CN 202210533185A CN 114884429 A CN114884429 A CN 114884429A
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- energy storage
- topology
- level
- switched reluctance
- reluctance motor
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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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/08—Reluctance motors
- H02P25/092—Converters specially adapted for controlling reluctance 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
- H02P27/08—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 with pulse width modulation
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/028—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
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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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A switched reluctance motor is a capacitance energy storage type multi-level topology and a control method thereof. The maximum allowable generated level number of the phase winding is the level number of the topology, and then (N +1) × (M-1) power switching tubes, (N +1) × (M-1) power diodes, 1 energy storage capacitor, (N +1) × (M-2) flying capacitors and 1 energy storage inductor are required for the N phases of the M (M is a positive integer greater than or equal to 3) level converter. Wherein, each phase needs (M-1) power switch tubes, (M-1) power diodes and (M-2) flying capacitors, and in addition, N phases share the (M-1) power switch tubes, (M-1) power diodes, (M-2) flying capacitors, 1 energy storage capacitor and 1 energy storage inductor. The multi-level topology of the invention supplies power for a single direct current source, and the voltage born by all devices is 2/(M-1) times of the direct current power voltage. This topology has a minimum of switching devices but the N phases can still be controlled independently. A novel multilevel topological scheme is provided for driving the switched reluctance motor.
Description
Technical Field
The invention designs a capacitance energy storage type multi-level topology of a switched reluctance motor and a control method thereof, belonging to the field of power electronics and power transmission.
Background
The multilevel power conversion technology for driving the switched reluctance motor mainly comprises a multilevel converter topology, a multilevel modulation strategy and a related control strategy for improving the operation performance of a multilevel inverter. However, in all of the three conventional multilevel converters, one clamping device is used to realize a clamping function, and the problems of large volume, low efficiency, high cost and the like are caused by more required power devices and complex structure, so that the practical application range is greatly limited. Especially, the problems of excessive redundant states of capacitor voltage, complex control of neutral point potential and capacitor voltage balance, and contradiction between device loss and switching frequency under the condition of high level number become main factors limiting the practical application of the multilevel converter. In recent years, few new types of multilevel topologies for switched reluctance motor drives have been proposed and studied. Only some topologies have complex structures and weak expansibility, or control algorithms thereof are complex and difficult to implement. Aiming at the practical problems, when the flying capacitor is constructed to output the same level number, the flying capacitor voltage control complexity is reduced, the used switching devices are reduced, and the loss is reduced, so that the problems are effectively solved by a multilevel topology and a modulation and control strategy thereof, which are not reported yet.
Disclosure of Invention
The purpose of the invention is as follows:
the invention provides a capacitance energy storage type multi-level topology of a switched reluctance motor and a control method thereof, and aims to solve the problems that the number of switches used in the traditional asymmetric flying capacitor clamping multi-level topology used for driving the switched reluctance motor is large, and the number of flying capacitors is large. The topology has a minimum of switching devices but the N phases can still be controlled independently and only one DC source is needed for power supply.
The technical scheme is as follows:
fig. 1 is a three-phase topology structure of a switched reluctance motor, which is a capacitive energy storage type multi-level topology, and is characterized in that: the structure comprises a controllable switch, a diode, an energy storage capacitor, a flying capacitor and an energy storage inductor. The maximum allowable generated level number of the phase winding is the level number of the topology, and then (N +1) × (M-1) power switching tubes, (N +1) × (M-1) power diodes, 1 energy storage capacitor, (N +1) × (M-2) flying capacitors and 1 energy storage inductor are required for the N phases of the M (M is a positive integer greater than or equal to 3) level converter. Wherein, each phase needs (M-1) power switch tubes, (M-1) power diodes and (M-2) flying capacitors, and in addition, N phases share the (M-1) power switch tubes, (M-1) power diodes, (M-2) flying capacitors, 1 energy storage capacitor and 1 energy storage inductor. The multi-level topology of the invention supplies power for a single direct current source, and the voltage born by all devices is 2/(M-1) times of direct current power supply voltage. This topology has a minimum of switching devices but the N phases can still be controlled independently.
A switched reluctance motor is a capacitance energy storage type multi-level topology, and a first control method of the implemented topology is characterized in that: the method adopts a duty ratio and a high-frequency triangular carrier to carry out carrier phase-shifting PWM modulation to generate required signals, the signals generated by each phase are subjected to AND logical operation with the commutation logical output and the current-limiting logical output of the switched reluctance motor to generate intermediate switching signals, and because each phase independently controls and generates the signals of the common switch, the final common switching signals are generated by the OR operation of the common switching signals generated by each phase, the signals of other independent switches are kept unchanged, and finally all the switching signals are generated to drive the switches of the topology to work.
The switched reluctance motor is a capacitance energy storage type multi-level topology, and the implemented second control method of the topology is characterized in that: the method adopts a one-dimensional space vector modulation mode, calculates the action time of each vector by using a volt-second balance principle, outputs a corresponding switch state in the action time period of each vector, performs AND logical operation with the commutation logical output and the current limiting logical output of the switched reluctance motor to generate an intermediate switch signal, and generates a signal of a common switch due to independent control of each phase, so that a final common switch signal is generated by performing OR operation on the common switch signal generated by each phase, the signals of other independent switches are kept unchanged, and finally generates all switch signals to drive the switches of the topology to work.
Switched reluctance motor a many level topology of capacitive energy storage type which characterized in that: by analyzing the relation between the output voltage and the driving logic of the main switching tube, except that the highest level and the lowest level only correspond to one switching state, the number of the levels between the highest level and the lowest level is provided with redundant switching states corresponding to the redundant switching states, the redundant switching states can be used for realizing fault-tolerant control of the topology, voltage balance control of the flying capacitor and the energy storage capacitor and current control of the energy storage inductor, and the number of the switching states corresponding to the negative level and the positive level is the same.
Drawings
FIG. 1 is a capacitor energy storage type M level topology structure of a switched reluctance motor;
FIG. 2 is a three-level topology structure of a switched reluctance motor of a capacitive energy storage type;
Detailed Description
Fig. 2 shows an example of a three-level topology of a switched reluctance motor of a capacitive storage type, in which a phase winding may have three levels at most. This topology needs 8 switch tubes in total, 8 diodes, 4 flying capacitors, 1 energy storage capacitor and 1 energy storage inductance.
For a capacitor energy storage type three-level topological structure of a switched reluctance motor, a first control mode is utilized: the method is characterized in that carrier phase shift PWM modulation is carried out by adopting a duty ratio and a high-frequency triangular carrier to generate required signals, the signals generated by each phase are subjected to AND logical operation with the commutation logical output and the current-limiting logical output of the switched reluctance motor to generate intermediate switching signals, and because each phase independently controls and generates signals of a common switch, the final common switching signals are generated by OR operation of the common switching signals generated by each phase, the signals of other independent switches are kept unchanged, and finally all switching signals are generated to drive the switches of the topology to work.
For a capacitor energy storage type three-level topological structure of a switched reluctance motor, a second control mode is utilized: the method adopts a one-dimensional space vector modulation mode, calculates the action time of each vector by using a volt-second balance principle, outputs a corresponding switch state in the action time period of each vector, performs AND logical operation with the commutation logical output and the current limiting logical output of the switched reluctance motor to generate an intermediate switch signal, and generates a signal of a common switch due to independent control of each phase, so that a final common switch signal is generated by performing OR operation on the common switch signal generated by each phase, the signals of other independent switches are kept unchanged, and finally generates all switch signals to drive the switches of the topology to work.
Claims (7)
1. A switched reluctance motor is a capacitance energy storage type multi-level topology and a control method thereof.
2. The switched reluctance motor of claim 1 is a capacitive energy storage type multilevel topology, wherein: the maximum allowable generated level number of the phase winding is the level number of the topology, and then (N +1) × (M-1) power switching tubes, (N +1) × (M-1) power diodes, 1 energy storage capacitor, (N +1) × (M-2) flying capacitors and 1 energy storage inductor are required for the N phases of the M (M is a positive integer greater than or equal to 3) level converter. Wherein, each phase needs (M-1) power switch tubes, (M-1) power diodes and (M-2) flying capacitors, and in addition, N phases share the (M-1) power switch tubes, (M-1) power diodes, (M-2) flying capacitors, 1 energy storage capacitor and 1 energy storage inductor.
3. The switched reluctance motor of claim 1 is a capacitive energy storage type multilevel topology, wherein: the topology is supplied by a single direct current source, and the voltage borne by all devices is 2/(M-1) times of direct current power supply voltage.
4. The switched reluctance motor of claim 1 is a capacitive energy storage type multilevel topology, wherein: this topology has a minimum of switching devices but the N phases can still be controlled independently.
5. The switched reluctance machine of claim 1, a first control method of a capacitive energy storage type multi-level topology, wherein: the method adopts duty ratio and high-frequency triangular carrier to carry out carrier phase shift PWM modulation to generate required signals, the signals generated by each phase carry out AND logical operation with the commutation logical output and the current-limiting logical output of the switched reluctance motor to generate intermediate switching signals, and because each phase independently controls and generates the signals of the common switch, the final common switching signals are generated by carrying out OR operation on the common switching signals generated by each phase, the signals of other independent switches are kept unchanged, and finally all the switching signals are generated to drive the switches of the topology to work.
6. The switched reluctance machine according to claim 1 is a capacitive energy storage type multi-level topology, and a second control method of the implemented topology is characterized in that: the method adopts a one-dimensional space vector modulation mode, calculates the action time of each vector by using a volt-second balance principle, outputs a corresponding switch state in the action time period of each vector, performs AND logical operation with the commutation logical output and the current limiting logical output of the switched reluctance motor to generate an intermediate switch signal, and generates a signal of a common switch due to independent control of each phase, so that the final common switch signal is generated by OR operation of the common switch signal generated by each phase, the signals of other independent switches are kept unchanged, and finally generates all switch signals to drive the switch of the topology to work.
7. The switched reluctance motor of claim 1 is a capacitive energy storage type multilevel topology, wherein: by analyzing the relation between the output voltage and the driving logic of the main switching tube, except that the highest level and the lowest level only correspond to one switching state, the number of the levels between the highest level and the lowest level is provided with redundant switching states corresponding to the redundant switching states, the redundant switching states can be used for realizing fault-tolerant control of the topology, voltage balance control of the flying capacitor and the energy storage capacitor and current control of the energy storage inductor, and the number of the switching states corresponding to the negative level and the positive level is the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210533185.7A CN114884429A (en) | 2022-05-12 | 2022-05-12 | Switched reluctance motor capacitance energy storage type multi-level topology and control method thereof |
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| CN202210533185.7A CN114884429A (en) | 2022-05-12 | 2022-05-12 | Switched reluctance motor capacitance energy storage type multi-level topology and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526875A (en) * | 2023-06-25 | 2023-08-01 | 广东省洛仑兹技术股份有限公司 | Method and device for generating driving signal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116526875A (en) * | 2023-06-25 | 2023-08-01 | 广东省洛仑兹技术股份有限公司 | Method and device for generating driving signal |
| CN116526875B (en) * | 2023-06-25 | 2024-04-12 | 广东省洛仑兹技术股份有限公司 | Method and device for generating driving signal |
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