CN103441713A - Switch-on angle and switch-off angle adjusting method for switched reluctance motor - Google Patents
Switch-on angle and switch-off angle adjusting method for switched reluctance motor Download PDFInfo
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- CN103441713A CN103441713A CN2013103964019A CN201310396401A CN103441713A CN 103441713 A CN103441713 A CN 103441713A CN 2013103964019 A CN2013103964019 A CN 2013103964019A CN 201310396401 A CN201310396401 A CN 201310396401A CN 103441713 A CN103441713 A CN 103441713A
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Abstract
The invention discloses a switch-on angle and switch-off angle adjusting method for a switched reluctance motor. In excitation, flow-continuing and flow-returning working periods of the switched reluctance motor, currents and voltages of the three periods are measured and transmistted to a single-chip microcomputer; an energy recovery efficiency is calculated through the single-chip microcomputer; the energy recovery efficiency is compared with an optimal-parameter table stored in the single-chip microcomputer; and according to the comparison result, switch-on and switch-off angles are adjusted through a drive circuit so that the energy recovery efficiency is approximate to the maximum energy recovery efficiency. The switch-on angle and switch-off angle adjusting method for the switched reluctance motor is high in practicality so that the motor is enabled to reach the maximum energy recovery efficiency at a significantly high speed.
Description
Technical field
The invention belongs to Motor Control Field, relate to a kind of method of control switch reluctance motor turn-on angle and the pass angle of rupture.
Background technology
Switched reluctance machines is simple in structure firm, reliable operation, and efficiency is high, the driving system for switched reluctance consisted of it is compared with traditional AC_DC electric drive system, has many advantages, as: starting torque is large, low-speed performance is good, the impulse current phenomenon that the influence electricity motivation occurs when starting; Speed-regulating range width, control flexibly, can conveniently realize four quadrant running, has stronger regenerative braking ability, all has high efficiency in broad rotating speed and power bracket, is conducive to save energy and reduce the cost; Can work in high rotating speed; But phase-deficient operation, fault-tolerant ability is strong etc.At present, the switched reluctance machines application industrial at military and civilian obtained some effects, but also exists some problems to remain further to be researched and solved, and mainly contains the technology etc. that realizes of rotor-position detection, control method.
The current course continuation mileage of the battery of switched reluctance machines is little, the battery utilance is not high, the energy that there be limited evidence currently of is paid close attention to refluxing stage reclaims, generally this part energy dissipation is fallen, or have and reclaim this part energy, open, close the angle of rupture and can not automatically adapt to varying environment, this situation energy recovery efficiency is low.
Summary of the invention
Technical problem: the method that the invention provides by-pass cock reluctance motor turn-on angle a kind of simple in structure, with low cost and the pass angle of rupture.
Technical scheme: the method for by-pass cock reluctance motor turn-on angle of the present invention and the pass angle of rupture comprises the following steps:
1) the current/voltage testing circuit gathers electric current, the voltage initial value of excitation stage, afterflow stage and refluxing stage, and send current/voltage feedback interface circuit to, current/voltage feedback interface circuit carries out sending single-chip microcomputer to after the filtering processing to electric current, voltage initial value, Hall element in the position feedback interface circuit gathers the rotating speed of motor, estimate load according to motor model simultaneously, and rotating speed and load are sent to single-chip microcomputer;
2) single-chip microcomputer is asked for respectively excitation stage power P
1, afterflow stage power P
2with the refluxing stage power P
3, and try to achieve the power sum P in excitation stage and afterflow stage
add=P
1+ P
2, the calculating energy organic efficiency
3) single-chip microcomputer is by step 2) energy recovery efficiency the calculated ceiling capacity organic efficiency Emax corresponding with stored Optimal Parameters table medium speed and load compare, the Optimal Parameters table is the Optimal Parameters table that Matlab-simulink emulation obtains, optimum turn-on angle in the Optimal Parameters table under the various loads of storage and rotating speed, close the angle of rupture and corresponding ceiling capacity organic efficiency, if E=Emax, do not do adjusting, if E<Emax, the corresponding turn-on angle of ceiling capacity organic efficiency Emax and the pass angle of rupture stored in the Optimal Parameters table are passed to drive circuit, by drive circuit, the turn-on angle of motor and the pass angle of rupture are adjusted to the turn-on angle in the Optimal Parameters table and close the angle of rupture, thereby make energy recovery efficiency approach maximum energy recovery efficiency.
In the present invention, the ceiling capacity organic efficiency Emax that the Optimal Parameters table medium speed of storing in single-chip microcomputer and load are corresponding and optimum turn-on angle, the pass angle of rupture are determined as follows:
By the Matlab-simulink simulation model, switched reluctance machines is carried out to emulation, in the three-phase of switched reluctance machines, all passing through two Situation modules separates measurement by excitation and two stages of afterflow with the electric current and voltage of refluxing stage mutually for each, then calculates respectively excitation stage power P
1', afterflow stage power P
2', the refluxing stage power P
3', then obtain the power sum P in excitation stage and afterflow stage
add', the definition energy recovery efficiency
by gridding method, under constraints and optimization aim, all parameter combinations are all calculated one time, obtain maximum organic efficiency under different loads and rotating speed and corresponding turn-on angle and close the angle of rupture;
Constraints comprises that electric current is no more than the copped wave amplitude limit value, can not fall into next inductance rising area to the voltage and current of fixed system, and target is the energy recovery efficiency maximum.
The implementing circuit of the inventive method comprises the power main circuit, drive circuit, current/voltage testing circuit, current/voltage feedback interface circuit, switched reluctance motor, position feedback interface circuit, single-chip data processor.The current/voltage testing circuit connects the power main circuit, current/voltage is by the current Hall transducer, voltage hall sensor records, and the electric current that the current/voltage testing circuit is recorded, voltage signal passes to the single-chip data processor after processing by current/voltage feedback interface circuit filtering, switched reluctance motor connects the power main circuit, the three-phase dc electricity, two lines of every phase connect the motor three-phase, drive circuit provides 6 roads and drives signal, the top tube and down tube of power ratio control circuit threephase switch device, position feedback interface circuit measuring rotating speed and estimation load, the voltage and current signal that single-chip data processor received current Voltage Feedback interface circuit transmits, rotating speed and load that the position feedback interface circuit transmits, outside acceleration or deceleration input signal.
The power main circuit comprises A, B, the C three-phase, the three-phase connection is identical, A comprises the first metal-oxide-semiconductor mutually, the second metal-oxide-semiconductor, the first diode, the second diode and phase winding, the drain electrode of the first metal-oxide-semiconductor connects positive source, the source electrode of the first metal-oxide-semiconductor connects the drain electrode of the second metal-oxide-semiconductor by phase winding, the source electrode of the second metal-oxide-semiconductor is connected to power cathode by sampling resistor, the negative electrode of the first diode connects positive source, the drain electrode of anodic bonding second metal-oxide-semiconductor of the first diode, the negative electrode of the second diode connects the source electrode of the first metal-oxide-semiconductor, the anodic bonding power cathode of the second diode, the source electrode of the second metal-oxide-semiconductor is connected to the current/voltage testing circuit.The current/voltage testing circuit comprises three-phase phase winding, Hall element and voltage hall sensor, and Hall element is connected on the motor phase windings loop, and voltage hall sensor is connected in parallel on phase winding.The single-chip data processor memory enters the Optimal Parameters table that the Matlab-simulink simulation model obtains, for controlling drive circuit.Excitation stage, afterflow stage and refluxing stage at switched reluctance machines, through the current/voltage testing circuit measure the voltage, electric current of this three phases and by current/voltage feedback interface circuit filtering, process after pass to single-chip microcomputer, calculate excitation stage power P by single-chip microcomputer
1, afterflow stage power P
2with the refluxing stage power P
3, and try to achieve the power sum P in excitation stage and afterflow stage
add=P
1+ P
2, the calculating energy organic efficiency
with the Optimal Parameters table deposited in single-chip microcomputer, compare, result, for controlling drive circuit, is regulated and is opened, closes the angle of rupture.
The Optimal Parameters table obtains by the Matlab-simulink model, Matlab is the business software that U.S. Mathworks company produces, for algorithm development, advanced techniques computational language and the interactive environment of data visualization, data analysis and numerical computations, mainly comprise Matlab and simulink two parts, simulink does system emulation.
Mode of operation by the first metal-oxide-semiconductor in the power main circuit and the second metal-oxide-semiconductor control switch reluctance motor: when the first metal-oxide-semiconductor, the equal conducting of the second metal-oxide-semiconductor, switched reluctance machines is in the excited work stage, the exciting voltage signal at sampling resistor two ends is delivered to the current/voltage testing circuit, the electric current that records, voltage signal are transported to the single-chip data processor after by current/voltage feedback interface circuit filtering, realize the sampling to winding power; When the first metal-oxide-semiconductor cut-off, during the second metal-oxide-semiconductor conducting, switched reluctance machines is in the afterflow working stage, the afterflow voltage signal at sampling resistor two ends is delivered to and is delivered to the current/voltage testing circuit, the electric current that records, voltage signal are transported to the single-chip data processor after by current/voltage feedback interface circuit filtering, realize the sampling to winding power; When the first metal-oxide-semiconductor, when the second metal-oxide-semiconductor ends simultaneously, motor is in the backflow working stage, current reflux in winding is to the DC power supply feed, the electric current that records, voltage signal are transported to the single-chip data processor after by current/voltage feedback interface circuit filtering, realize the sampling to winding power.
Wherein, the processing of single-chip data processor comprises, excitation stage power P
1, afterflow stage power P
2with the refluxing stage power P
3, and try to achieve the power sum P in excitation stage and afterflow stage
add=P
1+ P
2, the calculating energy organic efficiency
by the ceiling capacity organic efficiency under corresponding load and rotating speed in the Optimal Parameters table stored in the energy recovery efficiency that calculates and single-chip microcomputer relatively, if equal the ceiling capacity organic efficiency, do not split the angle of rupture of being open to the custom and make adjustments; If be less than the ceiling capacity organic efficiency, by drive circuit, regulate the turn-on angle of motor and close the angle of rupture and equal to open the pass angle of rupture in the Optimal Parameters table, thereby make energy recovery efficiency approach maximum energy recovery efficiency.
Beneficial effect: the present invention compared with prior art, has the following advantages:
Generally ignore the energy of refluxing stage in previous research, by the Matlab-simulink model, obtain different loads and ceiling capacity organic efficiency corresponding to rotating speed and turn-on angle, the pass angle of rupture now, make the Optimal Parameters table.Switched reluctance machines is not had to Feedback of Power at excitation, afterflow, backflow three phases before, by increasing current/voltage testing circuit and current/voltage feedback interface circuit two parts, can obtain now the performance number of feedback, thereby realize the self adaptation dynamic environment.Method by control switch reluctance motor turn-on angle, the pass angle of rupture has realized that the maximal efficiency of refluxing stage energy reclaims, and has extended the course continuation mileage of battery of electric vehicle.The invention solves that the current battery utilance is not high, course continuation mileage is little, can not fully reclaim the problem of the energy of refluxing stage.In preferred version of the present invention, by the Matlab-simulink model, obtain various rotating speeds and corresponding maximum organic efficiency and turn-on angle and the pass angle of rupture of load.
The accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is power main circuit schematic diagram of the present invention;
Fig. 3 is the fundamental diagram under the inventive method excited work pattern;
Fig. 4 is the fundamental diagram under the inventive method afterflow mode of operation;
Fig. 5 is the fundamental diagram under the inventive method reflux mode of operation.
In figure: A, B, C represent A, B, the C three-phase of motor, and Vs is power supply,
S
1it is A the first metal-oxide-semiconductor mutually; S
2it is A the second metal-oxide-semiconductor mutually; S
3it is B the first metal-oxide-semiconductor mutually; S
4it is B the second metal-oxide-semiconductor mutually; S
5it is C the first metal-oxide-semiconductor mutually; S
6it is C the second metal-oxide-semiconductor mutually; D
1a the first diode mutually, D
2a the second diode mutually, D
3b the first diode mutually, D
4b the second diode mutually, D
5c the first diode mutually, D
6c the second diode mutually, L
1the A phase winding, L
2b phase winding, L
3it is the C phase winding.
Embodiment
Below in conjunction with the present invention is further described.
The method of by-pass cock reluctance motor turn-on angle of the present invention and the pass angle of rupture, realized the dynamic self-adapting environment by increasing current/voltage feedback interface circuit and these two feedbacks of position feedback interface circuit, comprises the following steps:
1) current/voltage testing circuit 6 gathers the excitation stage, the electric current of afterflow stage and refluxing stage, voltage initial value, and send current/voltage feedback interface circuit 7 to, 7 pairs of electric currents of current/voltage feedback interface circuit, voltage initial value carries out sending single-chip microcomputer to after the filtering processing, Hall element in position feedback interface circuit 5 gathers the rotating speed of motor, simultaneously according to motor model estimation load, and rotating speed and load are sent to the single-chip data processor, the voltage and current signal that single-chip data processor received current Voltage Feedback interface circuit transmits, rotating speed and load that the position feedback interface circuit transmits, outside acceleration or deceleration input signal.The single-chip data processor memory enters the Optimal Parameters table that the Matlab-simulink simulation model obtains, for controlling drive circuit.At excitation stage, afterflow stage and the refluxing stage of switched reluctance machines, through the current/voltage testing circuit measure the voltage, electric current of this three phases and by current/voltage feedback interface circuit filtering, process after pass to single-chip microcomputer;
2) single-chip microcomputer calculates excitation stage power P
1, afterflow stage power P
2with the refluxing stage power P
3, and try to achieve the power sum P in excitation stage and afterflow stage
add=P
1+ P
2, the calculating energy organic efficiency
3) by energy recovery efficiency
with the Optimal Parameters table deposited in single-chip microcomputer, compare, result is for controlling drive circuit.Optimum turn-on angle in the Optimal Parameters table under the various loads of storage and rotating speed, the pass angle of rupture and corresponding ceiling capacity organic efficiency Emax, if E=Emax, do not do adjusting, if E<Emax, the corresponding turn-on angle of ceiling capacity organic efficiency Emax and the pass angle of rupture stored in the Optimal Parameters table are passed to drive circuit 2, by drive circuit 2, the turn-on angle of motor and the pass angle of rupture be adjusted to the turn-on angle in the Optimal Parameters table and close the angle of rupture, thereby making energy recovery efficiency approach maximum energy recovery efficiency.
The implementing circuit of the inventive method comprises the power main circuit, drive circuit, current/voltage testing circuit, current/voltage feedback interface circuit, switched reluctance motor, position feedback interface circuit, single-chip data processor.The current/voltage testing circuit connects the power main circuit, current/voltage is by the current Hall transducer, voltage hall sensor records, and the electric current that the current/voltage testing circuit is recorded, voltage signal passes to the single-chip data processor after processing by current/voltage feedback interface circuit filtering, switched reluctance motor connects the power main circuit, the three-phase dc electricity, two lines of every phase connect the motor three-phase, drive circuit provides 6 roads and drives signal, the top tube and down tube of power ratio control circuit threephase switch device, position feedback interface circuit measuring rotating speed and estimation load, the voltage and current signal that single-chip data processor received current Voltage Feedback interface circuit transmits, rotating speed and load that the position feedback interface circuit transmits, outside acceleration or deceleration input signal.The single-chip data processor memory enters the Optimal Parameters table that the Matlab-simulink simulation model obtains.
Wherein the Optimal Parameters table is the Matlab-simulink simulation model acquisition by switched reluctance machines, in the three-phase of switched reluctance machines, all passing through two Situation modules separates measurement by excitation and two stages of afterflow with the electric current and voltage of refluxing stage mutually for each, then calculates respectively excitation stage power P
1', afterflow stage power P
2', the refluxing stage power P
3', then obtain the power sum P in excitation stage and afterflow stage
add', the definition energy recovery efficiency
by gridding method, under constraints and optimization aim, all parameter combinations are all calculated one time, obtain maximum organic efficiency under different loads and rotating speed and corresponding turn-on angle and close the angle of rupture.
In the preferred embodiment of the inventive method, determine ceiling capacity organic efficiency Emax that Optimal Parameters table medium speed and load are corresponding and optimum turn-on angle, while closing the angle of rupture, the gridding method adopted refers to before this in turn-on angle and closes in the given range of the angle of rupture with large step-length, given turn-on angle, regulate and close the angle of rupture, the given pass angle of rupture, regulate turn-on angle; And then long turn-on angle, the pass angle of rupture regulated of small step in the suitable interval found, calculate the energy recovery efficiency in every kind of situation, accurately obtain every kind of turn-on angle, pass angle of rupture in situation with this.
The special-purpose integrated drive chips IR2110 that drive circuit 2 adopts IR company to produce carrys out driving power MOSFET(mos field effect transistor).
Adopt known traditional evaluation method according to motor model estimation load in the position feedback interface circuit, by torque, know load by inference, electric current and angle estimation obtain torque.
Current-voltage sampling circuit is arranged on the phase winding of switched reluctance machines, by the mode of operation of the first metal-oxide-semiconductor S1 in switched reluctance machines winding current voltage sampling circuit and the second metal-oxide-semiconductor S2 control switch reluctance motor; Excitation and afterflow working stage at switched reluctance machines, the phase winding electric current obtains by the Hall element be connected on phase winding L1, voltage hall sensor records into exciting voltage signal and afterflow voltage signal, and the excitation that current/voltage testing circuit 6 records, the current and voltage signals in afterflow stage are delivered to single-chip data processor 1 after processing by 7 filtering of current/voltage feedback interface circuit and are analyzed; At the backflow working stage of switched reluctance machines, switched reluctance machines completes commutation, enters sampling and the treatment step of refluxing stage and next phase winding electric current, voltage.The sampling step of refluxing stage is identical with the sampling step in afterflow stage with excitation.
The circuit corresponding to this method below in conjunction with accompanying drawing is described further:
As shown in Figure 1, switched reluctance machines current/voltage provided by the invention detects the electric current that connects the power main circuit and current/voltage is recorded, voltage signal passes to the single-chip data processor after processing by current/voltage feedback interface circuit filtering, switched reluctance motor connects the power main circuit and position signalling is passed to the position feedback interface circuit, the voltage and current signal that single-chip data processor received current Voltage Feedback interface circuit transmits, the rotating speed that the position feedback interface circuit transmits, load signal, outside acceleration or deceleration input and the signal of drive circuit feedback are analyzed, with the data that deposit in single-chip microcomputer, compare, comparative result is passed to drive circuit, drive circuit produces control signal, regulating power main circuit open-minded, close the angle of rupture.The power main circuit is connected with motor: the three-phase dc electricity, two lines of every phase connect the motor three-phase drive circuit and connect, drive circuit provides 6 roads and drives signal, and the top tube and down tube voltage and current measurement of power main circuit threephase switch device is exactly the current Hall transducer, voltage hall sensor.
The A of power main circuit 3 comprises the first metal-oxide-semiconductor S1, the second metal-oxide-semiconductor S2, phase winding L2, the first diode D1 and the second diode D2 mutually, and wherein, the first metal-oxide-semiconductor and the second metal-oxide-semiconductor model are AOT470; Whole circuit adopts the 48V low-voltage dc power supply to circuit supply.The drain electrode of the first metal-oxide-semiconductor M1 connects positive source, the source electrode of the first metal-oxide-semiconductor S1 connects the drain electrode of the second metal-oxide-semiconductor S2 by phase winding 11, the source electrode of the second metal-oxide-semiconductor M2 is connected to power cathode, the negative electrode of the first diode D1 connects positive source, the drain electrode of anodic bonding the second metal-oxide-semiconductor M2 of the first diode D1, the negative electrode of the second diode D2 connects the source electrode of the first metal-oxide-semiconductor M1, the anodic bonding power cathode of the second diode D2, Hall element is connected on the motor phase windings loop, and voltage hall sensor is connected in parallel on phase winding.The single-chip data processor is 32 single-chip microcomputers, comprises, calculate excitation and the power in afterflow stage and, the power of refluxing stage, according to
by highest energy organic efficiency that in the Optimal Parameters table stored in the energy recovery efficiency that calculates and single-chip microcomputer, load and rotating speed are corresponding relatively, if equal the ceiling capacity organic efficiency, do not split the angle of rupture of being open to the custom and make adjustments; If be less than the ceiling capacity organic efficiency, by drive circuit, regulate the turn-on angle of motor and close the angle of rupture and equal to open the pass angle of rupture in the Optimal Parameters table, thereby make energy recovery efficiency approach maximum energy recovery efficiency.
Switched reluctance machines power main circuit is three-phase 12/8 rotor, working stage by the first metal-oxide-semiconductor in switched reluctance machines power main circuit and the second metal-oxide-semiconductor control switch reluctance motor, excitation and afterflow working stage at switched reluctance machines, the phase winding electric current records respectively excitation stage electric current by Hall element and voltage hall sensor, voltage signal and afterflow stage electric current, voltage signal, the excitation stage electric current recorded through current/voltage, voltage signal and afterflow stage electric current, voltage signal is delivered to single-chip data processor 1 after processing by current/voltage feedback interface circuit filtering and is analyzed, backflow working stage at switched reluctance machines, the phase winding electric current records electric current, the voltage signal of refluxing stage by Hall element and voltage hall sensor, be delivered to single-chip data processor 1 and analyzed after current/voltage testing circuit 5 is processed by 6 filtering of current/voltage feedback interface circuit, single-chip data is processed and to be comprised: calculate excitation and the power in afterflow stage and, calculate the power of refluxing stage, and prestore the Optimal Parameters table in single-chip microcomputer relatively, regulate turn-on angle, close the angle of rupture according to comparative result.
The excitation stage: on the basis of circuit structure shown in Fig. 2, as shown in Figure 3, when the first metal-oxide-semiconductor S1, the equal conducting of the second metal-oxide-semiconductor S2, switched reluctance machines is in the excited work pattern, the 48V DC driven power supply that now outside provides, the first metal-oxide-semiconductor S1, motor A phase winding L1, the second metal-oxide-semiconductor S2 forms a current circuit.As shown by arrows, Hall element is connected on the motor phase windings loop sense of current, and voltage hall sensor is connected in parallel on (not shown) on phase winding, and voltage, current signal are passed to the single-chip data processor, and single-chip microcomputer calculates the power in excitation stage.
The afterflow stage: on the basis of circuit structure shown in Fig. 2, as shown in Figure 4, when the first metal-oxide-semiconductor S1 cut-off, during the second metal-oxide-semiconductor S2 conducting, switched reluctance machines is in the afterflow mode of operation, now A phase winding L1, the second diode D2, the second metal-oxide-semiconductor S2 forms a current circuit.Hall element is connected on the motor phase windings loop, and voltage hall sensor is connected in parallel on (not shown) on phase winding, and voltage, current signal are passed to the single-chip data processor, and single-chip microcomputer calculates the power in afterflow stage.
Refluxing stage: on the basis of circuit structure shown in Fig. 2, as shown in Figure 5, as the first metal-oxide-semiconductor S1, when the second metal-oxide-semiconductor S2 ends simultaneously, motor is in reflux mode of operation, the first diode D1 now, A phase winding L1, the second diode D2 and outside 48V DC power supply form loop, now the current reflux in winding is to the DC power supply feed, Hall element is connected on the motor phase windings loop, voltage hall sensor is connected in parallel on (not shown) on phase winding, by voltage, current signal passes to the single-chip data processor, single-chip microcomputer calculates the power of refluxing stage, according to
by the ceiling capacity organic efficiency of corresponding load and rotating speed in the Optimal Parameters table stored in the energy recovery efficiency that calculates and single-chip microcomputer relatively, if equal the ceiling capacity organic efficiency, do not split the angle of rupture of being open to the custom and make adjustments, if be less than the ceiling capacity organic efficiency, by drive circuit, regulate the turn-on angle of motor and close the angle of rupture and equal to open the pass angle of rupture in the Optimal Parameters table, thereby make energy recovery efficiency approach maximum energy recovery efficiency.The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. a by-pass cock reluctance motor turn-on angle and close the method for the angle of rupture, is characterized in that, the method comprises the following steps:
1) current/voltage testing circuit (6) gathers electric current, the voltage initial value of excitation stage, afterflow stage and refluxing stage, and send current/voltage feedback interface circuit (7) to, described current/voltage feedback interface circuit (7) carries out sending single-chip microcomputer to after the filtering processing to electric current, voltage initial value, Hall element in position feedback interface circuit (5) gathers the rotating speed of motor, estimate load according to motor model simultaneously, and rotating speed and load are sent to single-chip microcomputer;
2) described single-chip microcomputer is asked for respectively excitation stage power P
1, afterflow stage power P
2with the refluxing stage power P
3, and try to achieve the power sum P in excitation stage and afterflow stage
add=P
1+ P
2, the calculating energy organic efficiency
3) single-chip microcomputer is by described step 2) energy recovery efficiency the calculated ceiling capacity organic efficiency Emax corresponding with stored Optimal Parameters table medium speed and load compare, described Optimal Parameters table is the Optimal Parameters table that Matlab-simulink emulation obtains, optimum turn-on angle in the Optimal Parameters table under the various loads of storage and rotating speed, close the angle of rupture and corresponding ceiling capacity organic efficiency, if E=Emax, do not do adjusting, if E<Emax, the corresponding turn-on angle of ceiling capacity organic efficiency Emax and the pass angle of rupture stored in the Optimal Parameters table are passed to drive circuit (2), by drive circuit (2), the turn-on angle of motor and the pass angle of rupture are adjusted to the turn-on angle in the Optimal Parameters table and close the angle of rupture, thereby make energy recovery efficiency approach maximum energy recovery efficiency.
2. by-pass cock reluctance motor turn-on angle according to claim 1 and close the method for the angle of rupture, it is characterized in that, the ceiling capacity organic efficiency Emax that the Optimal Parameters table medium speed of storing in described single-chip microcomputer and load are corresponding and optimum turn-on angle, the pass angle of rupture are determined as follows:
By the Matlab-simulink simulation model, switched reluctance machines is carried out to emulation, in the three-phase of switched reluctance machines, all passing through two Situation modules separates measurement by excitation and two stages of afterflow with the electric current and voltage of refluxing stage mutually for each, then calculates respectively excitation stage power P
1', afterflow stage power P
2', the refluxing stage power P
3', then obtain the power sum P in excitation stage and afterflow stage
add', the definition energy recovery efficiency
by gridding method, under constraints and optimization aim, all parameter combinations are all calculated one time, obtain maximum organic efficiency under different loads and rotating speed and corresponding turn-on angle and close the angle of rupture;
Described constraints comprises that electric current is no more than the copped wave amplitude limit value, can not fall into next inductance rising area to the voltage and current of fixed system, and target is the energy recovery efficiency maximum.
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| CN201310396401.9A CN103441713B (en) | 2013-09-04 | 2013-09-04 | Method for adjusting switch-on angle and switch-off angle of switched reluctance motor |
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| CN109309462A (en) * | 2018-05-10 | 2019-02-05 | 烟台仙崴机电有限公司 | A kind of energy internet generator system efficiency optimization control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953902A (en) * | 2015-06-11 | 2015-09-30 | 南京普天大唐信息电子有限公司 | Switched reluctance motor power control circuit |
| CN106124849A (en) * | 2016-06-27 | 2016-11-16 | 北京新能源汽车股份有限公司 | Electric automobile energy reclaims method of testing and system |
| CN109309462A (en) * | 2018-05-10 | 2019-02-05 | 烟台仙崴机电有限公司 | A kind of energy internet generator system efficiency optimization control method |
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