CN103475292A - Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization - Google Patents
Switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization Download PDFInfo
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Abstract
The invention discloses a switch magnetic resistance generator system capable of realizing rapid excitation/demagnetization. The system comprises a switch magnetic resistance motor body, a prime mover, a position sensor, a power converter, a DC power supply and a controller, wherein the power converter is a four-level power converter. By adopting the four-level power converter, at an excitation stage, in an angle position control mode, the exciter current of a phase winding is increased, and the energy storage of a magnetic field is increased so that the output power of an overall power generation system is improved and it is easier for the power generation system to reach a rated power; in an current chopping control mode, the excitation time is reduced, rapid excitation is realized, and the time of a generating stage is increased so that the generating capacity of a motor is enhanced and the output power of the system is increased; and at the generating system, when two voltage sources are utilized, rapid demagnetization can be realized.
Description
Technical Field
The invention belongs to the technical field of drive control of a switched reluctance generator and design of a power converter, and particularly relates to a switched reluctance generator system for realizing quick excitation/demagnetization.
Background
The switched reluctance motor is a novel speed regulating motor developed by combining a power electronic technology, a digital control technology and a traditional reluctance motor, and has the characteristics of simple structure, firmness, low cost, reliable work, flexible control, high operating efficiency, low starting torque and strong fault-tolerant capability. When the switched reluctance motor is used as a generator, the switched reluctance motor has good regulation performance, can stably run in a wider speed range, outputs constant direct current and adapts to different load requirements; because the switched reluctance motor has simple structure, small rotational inertia of the rotor and low starting torque, the switched reluctance motor can be made into a high-rotation-speed power generation device, has higher efficiency and power density, and is very suitable for wind power generation and aviation power generation systems. The switched reluctance generator has strong fault-tolerant operation capability, can still stably operate under the condition that a certain phase fails, greatly enhances the reliability of the whole power generation system, and is particularly suitable for occasions with severe environments and special requirements.
The switched reluctance generator system mainly comprises a switched reluctance motor body, a prime motor, a position sensor, a power converter, a direct current power supply and a controller, and the structural block diagram of the system is shown in figure 1. The power converter used in a typical switched reluctance generator system is an asymmetric half-bridge power converter, the circuit topology of which is shown in fig. 2, and each phase can have three different operating states (taking phase a as an example) of state 1, state 0 and state-1 shown in fig. 3-1, fig. 3-2 and fig. 3-3 according to the on and off conditions of the two main switching devices of the upper and lower bridge arms of each phase, as shown in fig. 3. Wherein,the state 1 is the condition that two main switching devices of an upper bridge arm and a lower bridge arm are simultaneously conducted, the motor is in an excitation stage, and the voltage at two ends of a phase winding is the direct-current power supply voltage UcThe state 0 is the condition when the main switching element of the upper bridge arm is in the off state and the main switching element of the lower bridge arm is in the on state, the voltage at two ends of the phase winding is 0, the motor is in the follow current state, and the phase current follows current through the follow current diode and the main switching element of the lower bridge arm; the state-1 is the condition when the main switching devices of the upper and lower bridge arms are turned off at the same time, the voltage at two ends of the winding is-Uc at the moment, the motor is in the power generation stage, and the phase current forms a feedback circuit through two freewheeling diodes and a direct current power supply.
When the switched reluctance generator system adopts an asymmetric half-bridge power converter, the voltage values at two ends of a phase winding in an excitation stage are in a direct proportion relation with the magnitude of phase current, the larger the excitation voltage is, the larger the final excitation current of the phase winding is, the more energy is stored in a motor magnetic field, and the more power generation is facilitated, and under the condition of larger excitation voltage, the motor winding can realize quick excitation; in the power generation stage, if the rotating speed is low, the power generation voltage is greater than the motion electromotive force, the phase current cannot be continuously increased in the power generation stage, and the power generator system cannot effectively generate power, so that the switched reluctance power generator system must ensure that the power generation voltage is less than the motion electromotive force to effectively generate power. Because the voltage values in the excitation stage and the power generation stage in the asymmetric half-bridge power converter are the same, independent adjustment cannot be performed, and control and effective power generation of the switched reluctance generator are not facilitated, so that the output power of the system is low when the rotating speed of the motor is low, and the rated power of the motor cannot be reached.
Disclosure of Invention
The invention provides a novel switched reluctance generator system for realizing rapid excitation/demagnetization aiming at the defects of the switched reluctance generator system driven by the prior asymmetric half-bridge power converter, which is used for increasing the output power of the generator system and leading the output power to reach the rated power value of a motor under the corresponding control strategy, wherein the power converter adopts a novel four-level power converter. In the system, the excitation voltage and the power generation voltage can take different voltage values, so that the control and the regulation are convenient. In the excitation stage, two voltage sources are adopted to supply power to the motor winding, so that quick excitation is realized, the phase current rising slope is increased, in the power generation stage, whether one voltage source or two voltage sources are used is dynamically selected according to the voltage value of the energy storage capacitor, and when the two voltage sources are used, the demagnetization time of the motor can be reduced, and quick demagnetization is realized.
In order to solve the technical problems of the switched reluctance generator system driven by the asymmetric half-bridge power converter, the invention is realized by the following technical scheme:
a switched reluctance generator system for realizing rapid excitation/demagnetization comprises a switched reluctance motor body, a prime motor, a position sensor, a power converter, a direct-current power supply and a controller;
the power converter is a four-level power converter and comprises a direct-current power supply, each phase winding m of a switched reluctance generator and a filter capacitor CdcAnd an energy storage capacitor Cdc1A power switch Q1 and a power switch Q connected in series with each phase windingmH、QmLA power diode D1 and a power diode D forming a free-wheeling loop with each phase windingm2Power diode Dm3(ii) a Filter capacitor CdcConnected in parallel at the end of the DC bus and connected with the energy storage capacitor Cdc1Are connected in series;
the power switch device Q in the four-level power convertermH、QmLThe phase winding is directly connected with each phase winding of the switched reluctance generator; power switch device QmHPower switching device for upper arm, power switching device QmLThe upper end of each winding of the switched reluctance generator is respectively connected with the power switch device Q of the corresponding upper bridge armmHThe lower ends of the windings of the switched reluctance generator are respectivelyPower switch device Q connected with corresponding lower bridge armmLCollector of (2), power switching device Q of upper armmHCollector and energy storage capacitor Cdc1The positive pole of the lower bridge arm is connected with a power switch device QmLThe emitter of the direct current power supply is connected with the ground of the direct current power supply; power diodes D1, Dm2And Dm3The follow current diodes of each winding of the switched reluctance generator respectively use two power diodes for follow current of each phase winding, and the power diode Dm2Is connected with the power ground, and the cathode of the power switch device is connected with the upper end of a motor winding and an upper bridge arm connected with the windingmHAn emitter of (1); power diode Dm3And the anode of the power switching device Q is connected with the lower end of the motor winding and the lower bridge arm connected with the windingmLAnd its cathode is connected to the collector of the power switch device Q1 and the anode of the common power diode D1; the cathode of the power diode D1 and the energy storage capacitor C are shareddc1The positive electrodes of the two electrodes are connected; emitter of power switch device Q1, positive pole of power supply and energy storage capacitor Cdc1Is connected with the negative pole of the power diode D, and the collector of the power diode Dm3Is connected to the anode of the common power diode D1.
The power switch device Q1 determines whether the two ends of the winding of the switched reluctance generator are supplied with power by one voltage source or two voltage sources, wherein, the phase winding is supplied with power by two voltage sources in the excitation stage, the phase current rising speed is accelerated, the slope of the current curve is increased, when the angle position control mode is adopted, the energy storage of the magnetic field in the excitation stage is increased, the initial current entering the power generation stage is increased, and the power generation voltage can be dynamically selected, so that the ideal current waveform is easily obtained, and the output power of the system is increased; when a current chopping control mode is adopted, the excitation time is reduced, quick excitation can be realized, the time of a power generation stage is prolonged, and the voltage of the power generation stage can be dynamically selected, so that the power generation amount and the output power of the whole system are increased; in the power generation stage, when two voltage sources are adopted, the time for demagnetization is reduced, and quick demagnetization can be realized.
In the four-level power converter, a current sensor can be adopted to detect the instantaneous current of each phase winding and the DC bus terminal of the motor, and a voltage sensor can be adopted to detect the voltage of the DC bus terminal and the energy storage capacitor, so that the voltage protection is realized; the controller reads pulse signals of the position sensor to determine position information of a motor rotor, and controls the motor according to instantaneous current of each phase winding of the motor and voltage of the energy storage capacitor, so that relevant control strategies such as current chopping control, angle control, PWM control, current and voltage protection and the like are realized.
Due to the adoption of the technical scheme, compared with the prior art, the switched reluctance generator system for realizing rapid excitation/demagnetization provided by the invention has the following beneficial effects:
in the invention, because the switched reluctance generator system adopts the four-level power converter, the working state of the switched reluctance generator system has four working modes (taking A phase as an example) of a state 2, a state 0, a state-1 and a state-2, so that the control strategy is richer, the state 2 is always adopted to excite the motor winding in the excitation stage, the rising speed of phase current is accelerated, and the slope of a current curve is increased; when the angle position control mode is adopted, the magnetic field energy storage is increased, and the initial current entering the power generation stage is increased; when a current chopping control mode is adopted, the excitation time is reduced, the rapid excitation is realized, and the time of a power generation stage is prolonged; in the power generation stage, the use state-1 or the state-2 is dynamically selected according to whether the voltage value of the energy storage capacitor is in a normal range, and when the use state-1 is adopted, the power generation voltage is small, so that the switched reluctance generator system can relatively easily realize effective power generation to obtain an ideal current waveform; when using state-2, the winding current can be rapidly reduced to zero, thereby achieving rapid demagnetization.
Because the four-level power converter is adopted, under the angle position control mode, the exciting current of the winding is increased, and the magnetic field energy storage is also increased, so that the output power of the whole power generation system can be increased, and the power generation system can easily reach the rated power; under the current chopping control mode, the excitation time is reduced, the time of the power generation stage is increased, the power generation amount of the motor is increased, and the output power of the system is increased.
Drawings
FIG. 1 is a block diagram of a switched reluctance generator system;
FIG. 2 is a circuit topology of an asymmetric half-bridge power converter;
fig. 3 illustrates three operating states of the asymmetric half-bridge power converter, wherein fig. 3-1 is state 1, fig. 3-2 is state 0, and fig. 3-3 is state-1;
FIG. 4 is a four-level power converter employed in the present invention;
fig. 5 is four operating states of a four-level power converter employed in the present invention, wherein: FIG. 5-1 is State 2, FIG. 5-2 is State 0, FIG. 5-3 is State-1, and FIG. 5-4 is State-2;
fig. 6 is a control block diagram of a switched reluctance generator system for implementing fast excitation/demagnetization according to the present invention when a current chopping control manner is employed;
fig. 7 is a control block diagram of a switched reluctance generator system for implementing fast excitation/demagnetization according to the present invention when an angular position control scheme is employed;
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
the following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The invention provides a switched reluctance generator system for realizing rapid excitation/demagnetization, which comprises a switched reluctance motor body, a prime motor, a position sensor, a power converter, a direct-current power supply and a controller, wherein the switched reluctance motor body is connected with the prime motor through a power line; the switched reluctance generator is an electromechanical energy conversion core of the whole engine system, converts mechanical energy into electric energy, and operates according to the minimum reluctance principle; the power converter is an energy input and output channel of the system, and is a four-level power converter; the position encoder is used for providing position information of a motor rotor, the controller is a control center of the whole system, feedback information of the current sensor, the voltage sensor and the position encoder is comprehensively processed, the working state of a main switching element in the power converter is controlled, and the control of the running state of the switched reluctance generator is realized.
In the invention, the motor is a switched reluctance motor; in the four-level power converter, instantaneous currents of each phase winding and a direct-current bus terminal of the motor are detected by adopting a current sensor, and voltages of the direct-current bus terminal and an energy storage capacitor are detected by adopting a voltage sensor, so that voltage protection is realized; the controller reads pulse signals of the position sensor to determine position information of a motor rotor, and controls the motor according to instantaneous current of each phase winding of the motor and voltage of the energy storage capacitor, so that relevant control strategies such as current chopping control, angle control, PWM control, current and voltage protection and the like are realized.
As shown in fig. 4, the four-level power converter includes: DC power supply, each phase winding m of switch reluctance generator, filter capacitor CdcAnd an energy storage capacitor Cdc1A power switch Q1 and a power switch Q connected in series with each phase windingmH、QmLA power diode D1 and a power diode D forming a free-wheeling loop with each phase windingm2、Dm3(ii) a Filter capacitor CdcConnected in parallel at the end of the DC bus and connected with the energy storage capacitor Cdc1Are connected in series.
As shown in FIG. 4, the power switch in the four-level power converterPart QmH、QmLThe phase winding is directly connected with each phase winding of the switched reluctance generator; power switch device QmHBeing a switching device of the upper arm, power switching device QmLThe upper end of each winding of the switched reluctance generator is respectively connected with the power switch device Q of the corresponding upper bridge arm as the switch device of the lower bridge armmHThe lower ends of the windings of the switched reluctance generator are respectively connected with the power switch devices Q of the corresponding lower bridge armsmLCollector of (2), power switching device Q of upper armmHCollector and energy storage capacitor Cdc1The positive pole of the lower bridge arm is connected with a power switch device QmLIs connected to the ground of the dc power supply.
As shown in FIG. 4, the power diodes D1, D in the four-level power converterm2And Dm3A freewheeling diode for each winding of the switched reluctance generator; each phase winding uses two power diodes to carry on follow current, power diode Dm2Is connected with the power ground, and the cathode of the power switch device is connected with the upper end of a motor winding and an upper bridge arm connected with the windingmHAn emitter of (1); power diode Dm3And the anode of the power switching device Q is connected with the lower end of the motor winding and the lower bridge arm connected with the windingmLAnd its cathode is connected to the collector of the power switch device Q1 and the anode of the common power diode D1; cathode of shared power diode D1 and energy storage capacitor Cdc1The positive electrodes of the two electrodes are connected.
As shown in fig. 4, the power switch device Q1 determines whether the switched reluctance generator is powered by one voltage source or two voltage sources, and its emitter is connected to the positive pole of the power source and the energy storage capacitor Cdc1Is connected with the negative electrode of the power diode D, and the collector electrode of the power diode Dm3Is connected to the anode of the common power diode D1.
In the four-level power converter, a phase winding is supplied with power by two voltage sources in an excitation stage, the rising speed of phase current is accelerated, the slope of a current curve is increased, when an angle position control mode is adopted, the energy storage of a magnetic field in the excitation stage is increased, the initial current entering a power generation stage is increased, and the power generation voltage can be dynamically selected, so that an ideal current waveform is easily obtained, and the output power of a system is increased; when a current chopping control mode is adopted, the excitation time is reduced, quick excitation can be realized, the time of a power generation stage is prolonged, and the voltage of the power generation stage can be dynamically selected, so that the power generation amount and the output power of the whole system are increased; in the power generation stage, when two voltage sources are adopted, the time for demagnetization is reduced, and quick demagnetization can be realized.
Because a power converter commonly used in a switched reluctance generator system in the prior art is an asymmetric half-bridge power converter, the voltage values at two ends of a phase winding in an excitation stage are in a direct proportion relation with the magnitude of phase current, the larger the excitation voltage is, the larger the final excitation current of the phase winding is, the more energy is stored in a motor magnetic field, the more power generation is facilitated, and under the condition of larger excitation voltage, the motor winding can realize quick excitation; in the power generation stage, if the rotating speed is low, the power generation voltage is greater than the motion electromotive force, the phase current cannot be continuously increased in the power generation stage, and the power generator system cannot effectively generate power, so that the switched reluctance power generator system must ensure that the power generation voltage is less than the motion electromotive force to effectively generate power. Because the voltage values in the excitation stage and the power generation stage in the asymmetric half-bridge power converter are the same, independent adjustment cannot be performed, and control and effective power generation of the switched reluctance generator are not facilitated, so that the output power of the system is low when the rotating speed of the motor is low, and the rated power of the motor cannot be reached. Aiming at the defects of the switched reluctance generator system driven by the existing asymmetric half-bridge power converter, the switched reluctance generator system for realizing rapid excitation/demagnetization provided by the invention is used for increasing the output power of the generator system and enabling the output power to reach the rated power value of a motor under a corresponding control strategy, wherein the power converter adopts a novel four-level power converter, and the circuit topology of the power converter is shown in figure 4. In the system, the excitation voltage and the power generation voltage can take different voltage values, so that the control and the regulation are convenient. In the excitation stage, two voltage sources are adopted to supply power to the motor winding, so that quick excitation is realized, the phase current rising slope is increased, in the power generation stage, one voltage source or two voltage sources are dynamically selected according to the voltage value of the energy storage capacitor, when two voltage sources are used, the demagnetization time of the motor can be reduced, and quick demagnetization is realized
Compared with an asymmetric half-bridge power converter, the four-level power converter adopted by the invention is additionally provided with a power switching device Q1, a freewheeling diode D1 and an energy storage capacitor C for storing electric energydc1. The power converter has four operating states, as shown in fig. 5, in which: fig. 5-1 shows state 2, fig. 5-2 shows state 0, fig. 5-3 shows state-1, and fig. 5-4 shows state-2. Phase a is now analyzed by way of example and is described in detail as follows:
as shown in fig. 5-1, state 2 is with the power switch Q1 off and the power switch QAH、QALWhen conducting at the same time, the voltage across the winding is Vdc+Vdc1I.e. both voltage sources are supplied simultaneously, which is an operating state not available in an asymmetric half-bridge power converter. When state 2 is adopted in the excitation phase. Fast excitation is achieved, the time to build up the required current is reduced, and a larger phase current is produced than with state 1 of the asymmetric half-bridge power converter.
As shown in fig. 5-2, state 0 is power switch QAH、QALOne in an on state and the other in an off state, and the power switching device Q1 is in an off-state condition, at which time phase current freewheels through a freewheeling diode, the phase winding is in a freewheeling state, and the voltage across the winding is zero.
As shown in fig. 5-3, state-1 is with the power switch Q1 on and the power switch QAH、QALIs in the off state, which is the conventional power generation stage, and the voltage across the winding is the negative supply voltage-VdcWith current flow throughThe diode and the direct current power supply form a feedback circuit.
As shown in FIGS. 5-4, state-2 is power switch Q1, QAH、QALAll in the off state, when the voltage across the winding is-Vdc-Vdc1This state is also the power generation stage. At the moment, the switched reluctance generator is aligned with the energy storage capacitor Cdc1The charging is carried out so that the capacitor voltage is continuously increased until a desired value required for the control is reached. In the power generation stage, the phase current can be more quickly attenuated to 0 by adopting the state-2 than by adopting the state-1 of the asymmetric half-bridge power converter, so that the quick demagnetization is realized.
As can be seen by analysis, state-2 and state-1 cannot occur simultaneously, and state 2 can occur simultaneously with the remaining states.
The invention adopts a four-level power converter in a switched reluctance generator system to realize quick excitation/demagnetization and increase the output power of the system, and the working process is as follows: firstly, according to the control purpose, the energy storage capacitor C is controlleddc1Is set to a desired value due to the storage capacitor Cdc1During the continuous charging and discharging process, the voltage value of the charging and discharging device is required to fluctuate above and below the expected value, namely, an upper limit value and a lower limit value exist. In the excitation stage, the system always adopts the state 2 to excite the phase winding, so as to realize quick excitation; in the power generation stage, the energy storage capacitor C is useddc1The voltage is selected to be in a required operation state when the energy storage capacitor Cdc1When the voltage value of (2) is less than the lower limit of the expected value, the state-2 is used for the energy storage capacitor Cdc1Charging to make the energy storage capacitor Cdc1The voltage is recovered to a normal range, and rapid demagnetization is realized; as energy storage capacitor Cdc1Is greater than the upper limit of the desired value, the state-1 is used, since the energy-storage capacitor C is present during the excitation phasedc1When the phase winding is excited, there is a discharge process, so the capacitor voltage will drop continuously and then return to the normal range. As energy storage capacitor Cdc1When the voltage value is between the upper limit value and the lower limit value, the original working state is kept unchanged.
Fig. 6 is a control block diagram of a switched reluctance generator system for realizing rapid excitation/demagnetization according to the present invention when a current chopping control method is adopted. In this embodiment, the energy storage capacitor C is setdc1The desired and initial value of the voltage is 100V, which is considered to be the normal operating range when the voltage value varies between 90V and 110V. In the excitation stage, the phase winding is excited by using the state 2, so that quick excitation can be realized, the phase current reaches a limited current value in a short time, and the excitation time of the winding is shortened. When the winding is excited by using the state 2, the energy storage capacitor Cdc1Will discharge, the voltage will gradually drop; in the power generation stage, according to the energy storage capacitor Cdc1The voltage of the capacitor is dynamically controlled by selecting the state-1 or the state-2 when the energy storage capacitor Cdc1When the voltage value is lower than 90V, the state-2 and the state 0 are selected to carry out chopping control on the current, and the energy storage capacitor Cdc1Charging is carried out, and the voltage of the charging is gradually increased until 110V; as energy storage capacitor Cdc1When the voltage is higher than 110V, the state-1 and the state 0 are selected to carry out chopping control on the current, and at the moment, the energy storage capacitor Cdc1Not charged and in the excitation phase to excite the phase winding, there is a discharge process, and an energy-storage capacitor Cdc1Will gradually drop during this operation up to 90V. The above steps are repeated in a circulating way, and the energy storage capacitor Cdc1Will alternate between 90V and 110V, i.e. be in the normal operating range. As energy storage capacitor Cdc1When the voltage is in the normal working range, the original working state is kept unchanged.
In operation, the storage capacitor C should be preventeddc1Overshoot phenomenon occurs, and the energy storage capacitor C is avoideddc1The over-high voltage of the capacitor causes damage to the motor and sets the energy storage capacitor Cdc1Is an overshoot when the voltage value of (2) exceeds 120V. When the voltage of the capacitor is too high, namely more than 120V, a hard chopping mode of a state 2 and a state-1 is adopted in the power generation stage, and an energy storage capacitor C is addeddc1By means of a discharge path of an energy-storage capacitor Cdc1The voltage value of the voltage source is quickly reduced to 110V, so that the whole system can keep normal operation, and the overshoot condition is consideredThe method is a voltage protection strategy.
Fig. 7 is a control block diagram of a switched reluctance generator system for achieving fast excitation/demagnetization according to the present invention when an angular position control method is employed. In this embodiment, the energy storage capacitor C is setdc1The desired and initial value of the voltage is 100V, which is considered to be the normal operating range when the voltage value varies between 90V and 110V. In the excitation stage, the phase winding is excited in the state 2, under the condition of the same conduction angle, the initial current of the phase winding entering the power generation stage is increased, and the energy storage capacitor Cdc1The voltage will gradually drop; in the power generation stage, according to the energy storage capacitor Cdc1The voltage of the capacitor is dynamically controlled by selecting the state-1 or the state-2 when the energy storage capacitor Cdc1When the voltage value is lower than 90V, the state-2 is selected to control the current, and the energy storage capacitor Cdc1Charging is carried out, and the voltage of the charging is gradually increased until 110V; as energy storage capacitor Cdc1When the voltage is higher than 110V, the state-1 is selected to carry out chopping control on the current, and at the moment, the energy storage capacitor Cdc1Not charged and in the excitation phase to excite the phase winding, there is a discharge process, and an energy-storage capacitor Cdc1Will gradually drop during this operation up to 90V. The above steps are repeated in a circulating way, and the energy storage capacitor Cdc1Will alternate between 90V and 110V, i.e. be in the normal operating range. As energy storage capacitor Cdc1When the voltage is in the normal working range, the original working state is kept unchanged.
Analysis shows that in the phase current tailing stage, namely the stage from the turn-off angle to the current reduction to zero, the voltage at two ends of the phase winding is passively selected and is determined according to the state of the adjacent phase, and when the selected state is-2, the phase current can be rapidly reduced to zero, so that the rapid demagnetization is realized.
Although the present invention has been described in connection with the drawings and the specific embodiments, the present invention is not limited to the above-described embodiments, which are only illustrative and not restrictive, and it should be noted that those skilled in the art can make modifications and substitutions without departing from the technical principle of the present invention, and such modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (1)
1. A switched reluctance generator system for realizing rapid excitation/demagnetization comprises a switched reluctance motor body, a prime motor, a position sensor, a power converter, a direct-current power supply and a controller; the method is characterized in that:
the power converter is a four-level power converter and comprises a direct-current power supply, each phase winding m of a switched reluctance generator and a filter capacitor CdcAnd an energy storage capacitor Cdc1A power switch Q1 and a power switch Q connected in series with each phase windingmHPower switch device QmLPower diode D1And a power diode D forming a freewheeling circuit with each phase windingm2Power diode Dm3(ii) a Filter capacitor CdcConnected in parallel at the end of the DC bus and connected with the energy storage capacitor Cdc1Are connected in series;
the power switch device Q in the four-level power convertermHAnd a power switching device QmLThe phase winding is directly connected with each phase winding of the switched reluctance generator; power switch device QmHPower switching device for upper arm, power switching device QmLThe upper end of each winding of the switched reluctance generator is respectively connected with the power switch device Q of the corresponding upper bridge armmHThe lower ends of the windings of the switched reluctance generator are respectively connected with the power switch devices Q of the corresponding lower bridge armsmLCollector of (2), power switching device Q of upper armmHCollector and energy storage capacitor Cdc1The positive pole of the lower bridge arm is connected with a power switch device QmLThe emitter of the direct current power supply is connected with the ground of the direct current power supply; power diodes D1, Dm2And Dm3The follow current diodes of each winding of the switched reluctance generator respectively use two power diodes for follow current of each phase winding, and the power diode Dm2Is connected with the power ground, and the cathode of the power switch device is connected with the upper end of a motor winding and an upper bridge arm connected with the windingmHAn emitter of (1); power diode Dm3And the anode of the power switching device Q is connected with the lower end of the motor winding and the lower bridge arm connected with the windingmLAnd its cathode is connected to the collector of the power switch device Q1 and the anode of the common power diode D1; the cathode of the power diode D1 and the energy storage capacitor C are shareddc1The positive electrodes of the two electrodes are connected; emitter of power switch device Q1, positive pole of power supply and energy storage capacitor Cdc1Is connected with the negative pole of the power diode D, and the collector of the power diode Dm3Is connected to the anode of the common power diode D1.
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| CN104638990A (en) * | 2015-02-06 | 2015-05-20 | 南京工程学院 | Asymmetrical excitation method for single-winding multiphase magnetic suspension switched reluctance generator |
| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN104660129A (en) * | 2015-03-19 | 2015-05-27 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN105743375A (en) * | 2016-04-29 | 2016-07-06 | 天津工业大学 | Multi-level power topology structure of switch reluctance motor |
| CN105790628A (en) * | 2016-03-29 | 2016-07-20 | 浙江大学 | Switched reluctance motor (SRM) system based on function integrated converter |
| CN106655965A (en) * | 2016-10-10 | 2017-05-10 | 无锡硅银动力科技有限公司 | Switch magnetic resistance motor hardware control device |
| CN107171606A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | Small-power Multifunctional three-phase switched reluctance motor system and its control method |
| CN107196575A (en) * | 2017-07-06 | 2017-09-22 | 中国计量大学 | A kind of switched reluctance motor current transformer and its control method |
| CN107547019A (en) * | 2017-10-30 | 2018-01-05 | 中国矿业大学 | A kind of active booster converter of switch reluctance generator and its control method |
| CN108053970A (en) * | 2017-12-28 | 2018-05-18 | 宁波拓邦智能控制有限公司 | Without the quick demagnetization control method of sensor trapezoidal wave motor commutation, device and motor |
| CN108418483A (en) * | 2018-03-21 | 2018-08-17 | 中国计量大学 | A kind of varying speed switch magnetic resistance wind-driven generator encourages by force pump booster converter system |
| CN108448968A (en) * | 2018-03-21 | 2018-08-24 | 中国计量大学 | A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power |
| WO2019037096A1 (en) * | 2017-08-25 | 2019-02-28 | 毕节添钰动力科技股份有限公司 | High-power motor realizing parallel control of windings |
| CN110011579A (en) * | 2019-03-27 | 2019-07-12 | 中国计量大学 | High-speed DC switch reluctance generator converter system |
| CN110071491A (en) * | 2019-04-04 | 2019-07-30 | 苏州汇川技术有限公司 | It loads tail currents and eliminates circuit |
| CN110098769A (en) * | 2018-01-31 | 2019-08-06 | 英飞凌科技股份有限公司 | The discharge technology of magnet exciting coil |
| CN110429880A (en) * | 2019-08-20 | 2019-11-08 | 中国计量大学 | Double excitation double-feds mutually charge high-speed switched reluctance generator converter system |
| CN110460275A (en) * | 2019-08-20 | 2019-11-15 | 中国计量大学 | One kind going straight up to pressure double-fed switch reluctance generator converter system |
| CN110492799A (en) * | 2019-07-25 | 2019-11-22 | 江苏科技大学 | The excitation controlling device and application method of synchronous motor |
| CN110535384A (en) * | 2019-08-20 | 2019-12-03 | 中国计量大学 | One kind going straight up to pressure double-fed switch reluctance generator converter system |
| CN110677085A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Variable excitation high-boost double-fed switch reluctance generator current conversion system |
| CN110729932A (en) * | 2019-10-17 | 2020-01-24 | 中国计量大学 | Multi-mode voltage transformation switched reluctance generator current transformation system and regulation and control method thereof |
| CN110784137A (en) * | 2019-10-17 | 2020-02-11 | 中国计量大学 | Full-inductance boosting double-fed switched reluctance generator current conversion system |
| CN111544902A (en) * | 2020-05-23 | 2020-08-18 | 西北工业大学 | Half-bridge circuit energy recovery's football robot electromagnetism ejection system |
| CN111637164A (en) * | 2020-05-21 | 2020-09-08 | 华中科技大学 | Series winding control device and method applied to magnetic suspension bearing |
| CN111954972A (en) * | 2017-11-23 | 2020-11-17 | 劳斯莱斯德国有限两合公司 | Electrical machine with improved operating safety |
| CN112104277A (en) * | 2020-08-26 | 2020-12-18 | 南京航空航天大学 | Switched reluctance repetition frequency power pulse generator |
| CN114465548A (en) * | 2021-10-12 | 2022-05-10 | 郑州大学 | Low-cost self-boosting power converter for switched reluctance motor and control strategy thereof |
| CN114553079A (en) * | 2022-04-27 | 2022-05-27 | 太原理工大学 | Voltage-adjustable switched reluctance generator power converter and control method thereof |
| CN117277908A (en) * | 2023-11-21 | 2023-12-22 | 佳沃德（佛山）科技有限公司 | Power converter of high-speed switch reluctance motor |
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| CN104638991A (en) * | 2015-01-28 | 2015-05-20 | 江苏大学 | Double-bus power converter for inhibiting torque pulsation of switched reluctance motor and control method thereof |
| CN104638990A (en) * | 2015-02-06 | 2015-05-20 | 南京工程学院 | Asymmetrical excitation method for single-winding multiphase magnetic suspension switched reluctance generator |
| CN104660129A (en) * | 2015-03-19 | 2015-05-27 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN104660129B (en) * | 2015-03-19 | 2017-04-26 | 中国计量学院 | Switch reluctance wind driven generator control system and method |
| CN105790628A (en) * | 2016-03-29 | 2016-07-20 | 浙江大学 | Switched reluctance motor (SRM) system based on function integrated converter |
| CN105790628B (en) * | 2016-03-29 | 2018-04-10 | 浙江大学 | A kind of switched reluctance motor system based on function integrated converter |
| CN105743375A (en) * | 2016-04-29 | 2016-07-06 | 天津工业大学 | Multi-level power topology structure of switch reluctance motor |
| CN106655965A (en) * | 2016-10-10 | 2017-05-10 | 无锡硅银动力科技有限公司 | Switch magnetic resistance motor hardware control device |
| CN107196575A (en) * | 2017-07-06 | 2017-09-22 | 中国计量大学 | A kind of switched reluctance motor current transformer and its control method |
| CN107171606A (en) * | 2017-07-06 | 2017-09-15 | 中国计量大学 | Small-power Multifunctional three-phase switched reluctance motor system and its control method |
| CN107196575B (en) * | 2017-07-06 | 2020-06-26 | 中国计量大学 | Switch reluctance motor converter and control method thereof |
| CN107171606B (en) * | 2017-07-06 | 2019-07-30 | 中国计量大学 | Small-power Multifunctional three-phase switched reluctance motor system and its control method |
| WO2019037096A1 (en) * | 2017-08-25 | 2019-02-28 | 毕节添钰动力科技股份有限公司 | High-power motor realizing parallel control of windings |
| US11251671B2 (en) | 2017-08-25 | 2022-02-15 | Bijie Tianyu Power Technology Co., Ltd | High-power motor controlled by parallelly connected windings |
| CN107547019B (en) * | 2017-10-30 | 2021-02-12 | 中国矿业大学 | Active boost converter of switched reluctance generator and control method thereof |
| CN107547019A (en) * | 2017-10-30 | 2018-01-05 | 中国矿业大学 | A kind of active booster converter of switch reluctance generator and its control method |
| CN111954972A (en) * | 2017-11-23 | 2020-11-17 | 劳斯莱斯德国有限两合公司 | Electrical machine with improved operating safety |
| CN108053970A (en) * | 2017-12-28 | 2018-05-18 | 宁波拓邦智能控制有限公司 | Without the quick demagnetization control method of sensor trapezoidal wave motor commutation, device and motor |
| CN108053970B (en) * | 2017-12-28 | 2020-05-12 | 宁波拓邦智能控制有限公司 | Sensorless trapezoidal wave motor commutation rapid demagnetization control method and device and motor |
| CN110098769A (en) * | 2018-01-31 | 2019-08-06 | 英飞凌科技股份有限公司 | The discharge technology of magnet exciting coil |
| CN108448968B (en) * | 2018-03-21 | 2019-11-15 | 中国计量大学 | A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power |
| CN108418483B (en) * | 2018-03-21 | 2019-08-23 | 中国计量大学 | A kind of varying speed switch magnetic resistance wind-driven generator encourages by force pump booster converter system |
| CN108418483A (en) * | 2018-03-21 | 2018-08-17 | 中国计量大学 | A kind of varying speed switch magnetic resistance wind-driven generator encourages by force pump booster converter system |
| CN108448968A (en) * | 2018-03-21 | 2018-08-24 | 中国计量大学 | A kind of half self-excitation switched reluctance machines simple multifunctional current transformer of small-power |
| CN110011579A (en) * | 2019-03-27 | 2019-07-12 | 中国计量大学 | High-speed DC switch reluctance generator converter system |
| CN110011579B (en) * | 2019-03-27 | 2020-09-11 | 中国计量大学 | High-speed direct-current switch reluctance generator current transformation system |
| CN110071491A (en) * | 2019-04-04 | 2019-07-30 | 苏州汇川技术有限公司 | It loads tail currents and eliminates circuit |
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| CN110492799A (en) * | 2019-07-25 | 2019-11-22 | 江苏科技大学 | The excitation controlling device and application method of synchronous motor |
| CN110460275A (en) * | 2019-08-20 | 2019-11-15 | 中国计量大学 | One kind going straight up to pressure double-fed switch reluctance generator converter system |
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| CN110429880A (en) * | 2019-08-20 | 2019-11-08 | 中国计量大学 | Double excitation double-feds mutually charge high-speed switched reluctance generator converter system |
| CN110677085A (en) * | 2019-10-17 | 2020-01-10 | 中国计量大学 | Variable excitation high-boost double-fed switch reluctance generator current conversion system |
| CN110784137A (en) * | 2019-10-17 | 2020-02-11 | 中国计量大学 | Full-inductance boosting double-fed switched reluctance generator current conversion system |
| CN110729932A (en) * | 2019-10-17 | 2020-01-24 | 中国计量大学 | Multi-mode voltage transformation switched reluctance generator current transformation system and regulation and control method thereof |
| CN110677085B (en) * | 2019-10-17 | 2021-02-12 | 中国计量大学 | Variable excitation doubly-fed switched reluctance generator current transformation system |
| CN110729932B (en) * | 2019-10-17 | 2021-02-19 | 中国计量大学 | Multi-mode voltage transformation switched reluctance generator current transformation system and regulation and control method thereof |
| CN111637164A (en) * | 2020-05-21 | 2020-09-08 | 华中科技大学 | Series winding control device and method applied to magnetic suspension bearing |
| CN111544902A (en) * | 2020-05-23 | 2020-08-18 | 西北工业大学 | Half-bridge circuit energy recovery's football robot electromagnetism ejection system |
| CN112104277A (en) * | 2020-08-26 | 2020-12-18 | 南京航空航天大学 | Switched reluctance repetition frequency power pulse generator |
| CN112104277B (en) * | 2020-08-26 | 2022-03-25 | 南京航空航天大学 | Switched reluctance repetition frequency power pulse generator |
| CN114465548A (en) * | 2021-10-12 | 2022-05-10 | 郑州大学 | Low-cost self-boosting power converter for switched reluctance motor and control strategy thereof |
| CN114553079A (en) * | 2022-04-27 | 2022-05-27 | 太原理工大学 | Voltage-adjustable switched reluctance generator power converter and control method thereof |
| CN114553079B (en) * | 2022-04-27 | 2022-07-05 | 太原理工大学 | Voltage-adjustable switched reluctance generator power converter and control method thereof |
| CN117277908A (en) * | 2023-11-21 | 2023-12-22 | 佳沃德（佛山）科技有限公司 | Power converter of high-speed switch reluctance motor |
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