CN106788048A - Brushless DC motor control system and control method based on no electrolytic capacitor inverter - Google Patents
Brushless DC motor control system and control method based on no electrolytic capacitor inverter Download PDFInfo
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- CN106788048A CN106788048A CN201710195069.8A CN201710195069A CN106788048A CN 106788048 A CN106788048 A CN 106788048A CN 201710195069 A CN201710195069 A CN 201710195069A CN 106788048 A CN106788048 A CN 106788048A
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/0003—Control strategies in general, e.g. linear type, e.g. P, PI, PID, using robust control
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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
Abstract
The invention discloses a kind of brushless DC motor control system based on no electrolytic capacitor inverter and control method, including：Detecting system input voltage, bus current and motor speed, rotor-position；Regulating error is carried out to given rotating speed and actual speed；The given electric current of bus is calculated according to input voltage, speed ring output, thin-film capacitor capacitance；Calculate bus error current and carry out PI regulations, obtain the dutycycle of square wave PWM controls；According to dutycycle, motor rotor position and phase change logic, square wave PWM drive signal is obtained；Controlled motor is modulated to inverter.The present invention can realize application of the no electrolytic capacitor inverter in brushless DC motor control system, obtain net side High Power Factor, and simple control structure improves system reliability.
Description
Technical field
It is more specifically a kind of based on no electrolytic capacitor inverter the invention belongs to AC inverter driving system technical field
Control method for brushless direct current motor.
Background technology
Brshless DC motor is with its high efficiency, long-life, preferable rotary speed-torque characteristic, and controls simple, speed governing model
The advantages of enclosing width, has obtained preferable development in the industries such as automobile, Aero-Space, household electrical appliance.Grinding as scholars
Study carefully focus.
Household electrical appliance headed by air-conditioning, its input voltage is single-phase alternating current, and front stage circuits are single-phase uncontrollable rectifier bridge,
Busbar voltage is also easy to produce fluctuation, causes harmonic pollution, and power factor declines.The 3C certifications of China and the CE certifications in Europe are for family
There are clear stipulaties with the current harmonics of air-conditioning, the system to every phase current less than 16A, each primary current harmonic limits must are fulfilled for
IEC61000-3-2 standards.Therefore it is also that an emphasis needs what is considered to improve the power factor of input side, suppression current harmonics
Aspect.
The household electric appliance power factor correcting scheme commonly used at present, more using BOOST type circuit topological structures, due to circuit
In contain power device, introduce switching loss, and control circuit is relative complex.Meanwhile, the high-capacity direct current bus in circuit
Electric capacity, temperature influence is larger, and service life is limited, and system reliability is relatively low.
The content of the invention
Goal of the invention：In order to overcome the above-mentioned deficiencies of the prior art, it is inverse using no electrolytic capacitor the invention provides one kind
Become device to drive, realize that system is input into the control method for brushless direct current motor of High Power Factor by control bus electric current.
Technical scheme：A kind of brushless DC motor control system based on no electrolytic capacitor inverter, including：Power supply electricity
Road, rectifier, thin-film capacitor, inverter, motor, input voltage acquisition module, bus current acquisition module, rotating speed station acquisition
Module, speed error module, rotating speed PI modules, bus current give module, bus current error module, electric current PI modules, PWM
Control module, phase change logic module；
The power circuit is single phase alternating current power supply, for providing single-phase alternating current for rectifier；
The rectifier is single-phase uncontrollable rectifier device, for being direct current by single-phase input AC rectification, and to inversion
Device is powered；
The thin-film capacitor connection rectifier output end two ends；
The inverter be three-phase voltage source type inverter, the voltage pulse for receiving pulse width modulation module, and according to
Voltage pulse controlled motor；
The input voltage acquisition module is used to gather net side input voltage, and sends to the given module of bus current；
The bus current acquisition module is used to gather the electric current of inverter input side, and is sent to bus current error mould
Block；
The rotating speed station acquisition module is used to gather motor speed and rotor-position, and send to speed error module,
Phase change logic module；
The speed error module is used for the motor speed that given rotating speed is collected with the rotating speed station acquisition module
Contrast, obtains speed error, and send it to rotating speed PI modules；
The rotating speed PI modules are used to for speed error to carry out PI regulations, obtain bus current vector, and send to bus
Given value of current module；
The given module of the bus current is used to calculate female according to input voltage, bus current vector, thin-film capacitor capacitance
Line gives electric current, and sends it to bus current error module；
The bus current error module is used to contrast the given electric current of bus with bus actual current, obtains bus current
Error, and send it to electric current PI modules；
The electric current PI modules are used to for bus current error to carry out PI regulations, obtain dutycycle, and send to PWM controls
Module；
The phase change logic module is used to determine that power tube turns on situation according to motor rotor position；
The PWM control modules are square wave control, for being driven according to dutycycle and power tube conducting situation generation square wave PWM
Dynamic signal, and send to inverter.
Further, the motor is brshless DC motor.
The control method that a kind of brushless DC motor control system based on no electrolytic capacitor inverter is realized, including it is following
Step：
Real-time Collection single phase ac input voltage and DC bus current, motor in real time rotor-position and rotating speed；
The error of given motor speed and the motor in real time rotating speed is calculated, and PI regulations are carried out to speed error；
Calculate the given electric current of bus current；
The given electric current of bus and actual bus current error are calculated, and PI regulations are carried out to current error, obtain dutycycle；
Judge that power tube turns on situation according to motor rotor position and phase change logic；
According to dutycycle and power tube conducting situation, square wave PWM controls are carried out to inverter, and by inverter control electricity
Machine.
Further, the calculating of the given electric current of the bus is comprised the following steps：
The motor speed and given rotating speed of the Real-time Collection are contrasted, motor revolution error is obtained, to the speed error
PI regulations are carried out, bus average current is obtained；By the input voltage of the Real-time Collection, bus average current, thin-film capacitor
Capacitance, is calculated the given electric current of bus.
Further, the computational methods of the given electric current of the bus are as follows：
Collection net side input voltage is sine wave, its expression formula such as formula (1)：
In formula, vinIt is single phase ac input voltage, U is single phase ac input voltage virtual value, ωinIt is single-phase input electricity
Pressure angular speed.
Assuming that net side input is unit power factor, input voltage and input current are sine wave, and both same-phases,
So shown in preferable input current such as formula (2)：
In formula,It is system ideal input current, I is single phase ac ideal input current virtual value, ωmIt is single-phase input
Voltage angular speed；
Capacitance is calculated for the ideal compensative current such as formula (3) of the thin-film capacitor of C is shown：
Wherein, sign is sign function, specific function such as following formula (4)：
Preferable bus current is the preferable input current after rectification, calculates the input current of inverter for system ideal is defeated
Enter current absolute value and subtract capacitance compensation electric current, as shown in formula (5)：
Because in square wave control, bus current is high frequency chopping, so the bus current of collection need to be by a low pass filtered
Bus current value of feedback i can be just obtained after ripple devicedc, the phase offset of bus current value of feedback is so caused, therefore it is given
Value will also carry out phase compensation, to ensure the same-phase of single phase ac input current and input voltage.Low-pass first order filter is produced
Raw phase delay computing formula, as shown in formula (6)：
In formula, f is the frequency of input signal, the i.e. frequency of bus current；fcIt is the cut-off frequency of wave filter.
Finally, shown in bus current set-point such as formula (7)：
Wherein, B is that speed error PI adjusts output valve；λ is phase offset compensation.
Further, phase change logic is comprised the following steps：
Weak magnetic advance angle is subtracted by motor rotor position, then judges work sector, determine the conducting situation of power tube.
Further, PWM controls are comprised the following steps：
Square wave PWM type of drive is PWM_ON_PWM, i.e., in 120 ° of ON times of a certain phase, first 30 ° is copped wave control
System, middle 60 ° is Heng Tong, and 30 ° is chop control afterwards.What the power tube conducting situation and electric current PI obtained by phase change logic were exported
Dutycycle determines that 6 road PWM drive signals are specifically opened and the shut-off moment come jointly.
Beneficial effect：
By control bus electric current come control input electric current, the sineization of input current is realized, while same with input voltage
Phase, and then realize system input side High Power Factor.Therefore, premised on improving net side power factor, realize motor weak
The velocity interval wide operation of magnetic region, optimizes current control structure, strengthens the robustness and practicality of control system, and control simply has
Effect；The control structure of bus current is proposed, the absolute value and speed of the sine value at compensation angle are added according to net side input voltage phase
Ring output valve, obtains the preferable net side input current after rectification, then subtracts preferable thin-film capacitor compensation electric current, obtains bus and gives
Electric current, controls actual bus current to follow given electric current, and then control input current waveform by PI, reaches High Power Factor
Purpose, while strengthening system robustness and practicality；Optimization square wave PWM control modes, using the type of drive of PWM_ON_PWM,
Reduce the commutation torque ripple of brshless DC motor and the freewheel current of non-conduction phase.
Brief description of the drawings
Fig. 1 is a kind of brushless DC motor control system structured flowchart based on no electrolytic capacitor inverter of the present invention.
Fig. 2 is the calculation flow chart of the given electric current of bus of the present invention.
Fig. 3 is the no electrolytic capacitor control system topology diagram of brshless DC motor of the present invention.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is only used for explaining the present invention, and
It is non-for limiting the scope of the present invention.
The invention discloses a kind of brushless DC motor control system based on no electrolytic capacitor inverter, Fig. 1 is this hair
Bright structured flowchart, including：Power circuit, rectifier, thin-film capacitor, inverter, motor, input voltage acquisition module, bus
Current acquisition module, rotating speed station acquisition module, speed error module, rotating speed PI modules, bus current give module, bus electricity
Stream error module, electric current PI modules, PWM control modules, phase change logic module.
Power circuit is single phase alternating current power supply, for providing single-phase alternating current for rectifier.
Rectifier is single-phase uncontrollable rectifier device, for being direct current by single-phase input AC rectification, and is supplied to inverter
Electricity.
Thin-film capacitor connection rectifier output end two ends, for absorbing voltage higher hamonic wave, while being motor high power feelings
Normal operation is maintained to provide energy under condition.
Inverter is three-phase voltage source type inverter, the voltage pulse for receiving pulse width modulation module, and according to voltage
Pulse Width Control motor.
Motor is brshless DC motor.
Input voltage acquisition module is used to gather net side input voltage, and sends to the given module of bus current；
Bus current acquisition module is used to gather the electric current of inverter input side, and is sent to bus current error module；
Rotating speed station acquisition module is used to gather motor speed and rotor-position, and sends to speed error module, commutation
Logic module；
Speed error module is used for the motor speed contrast for collecting given rotating speed and the rotating speed station acquisition module,
Speed error is obtained, and sends it to rotating speed PI modules；
Rotating speed PI modules are used to for speed error to carry out PI regulations, obtain bus current vector, and send to bus current
Given module；
The given module of bus current is used to calculate bus and give according to input voltage, bus current vector, thin-film capacitor capacitance
Determine electric current, and send it to bus current error module；
Bus current error module is used to contrast the given electric current of bus with bus actual current, obtains bus current mistake
Difference, and send it to electric current PI modules；
Electric current PI modules are used to for bus current error to carry out PI regulations, obtain dutycycle, and send to PWM control moulds
Block；
Phase change logic module is used to determine that power tube turns on situation according to motor rotor position；
PWM control modules are square wave control, for driving letter according to dutycycle and power tube conducting situation generation square wave PWM
Number, and send to inverter.
A kind of brushless DC motor control system control method based on no electrolytic capacitor inverter, comprises the following steps：
Real-time Collection single phase ac input voltage vin, DC bus current idc, motor in real time rotor position and rotational speed omegam；Meter
Calculate given motor speedWith the motor in real time rotational speed omegamError, and PI regulations are carried out to speed error, calculate female
Line gives electric currentThe given electric current of bus and actual bus current error are calculated, and PI regulations are carried out to current error, accounted for
Sky compares D；Judge that power tube turns on situation according to the motor in real time rotor position and phase change logic；According to dutycycle D
Square wave PWM drive signal is set with power tube conducting situation, inverter is driven, and by inverter control motor.
It is illustrated in figure 2 the calculation flow chart of the given electric current of bus.
Bus gives current calculation method, comprises the steps of：
Contrast the motor speed ω of the Real-time CollectionmWith given rotating speedMotor revolution error is obtained, to the rotating speed
Error carries out PI regulations, obtains bus average current；By the input voltage v of the Real-time Collectionin, it is bus average current, thin
Membrane capacitance capacitance C, is calculated the given electric current of bus
Further, the computational methods of the given electric current of the bus are as follows：
Collection net side input voltage is sine wave, its expression formula such as formula (1)：
In formula, vinIt is single phase ac input voltage, U is single phase ac input voltage virtual value, ωinIt is single-phase input electricity
Pressure angular speed.
Assuming that net side input is unit power factor, input voltage and input current are sine wave, and both same-phases,
So shown in preferable input current such as formula (2)：
In formula,It is system ideal input current, I is single phase ac ideal input current virtual value, ωinIt is single-phase input
Voltage angular speed；
Capacitance is calculated for the ideal compensative current such as formula (3) of the thin-film capacitor of C is shown：
Wherein, sign is sign function, specific function such as following formula (4)：
Preferable bus current is the preferable input current after rectification, calculates the input current of inverter for system ideal is defeated
Enter current absolute value and subtract capacitance compensation electric current, as shown in formula (5)：
Because in square wave control, bus current is high frequency chopping, so the bus current of collection need to be by a low pass filtered
Bus current value of feedback i can be just obtained after ripple devicedc, the phase offset of bus current value of feedback is so caused, therefore it is given
Value will also carry out phase compensation, to ensure the same-phase of single phase ac input current and input voltage.Low-pass first order filter is produced
Raw phase delay computing formula, as shown in formula (6)：
In formula, f is the frequency of input signal, the i.e. frequency of bus current；fcIt is the cut-off frequency of wave filter.
Finally, shown in bus current set-point such as formula (7)：
Wherein, B is that speed error PI adjusts output valve；λ is phase offset compensation.
Fig. 3 is the no electrolytic capacitor control system topology diagram of brshless DC motor.
The no electrolytic capacitor control system topological structure of shown brshless DC motor, including power circuit, rectifier, film
Electric capacity, inverter and motor.
The above is preferable real case of the invention, is not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (7)
1. a kind of brushless DC motor control system based on no electrolytic capacitor inverter, it is characterised in that including：Power supply electricity
Road, rectifier, thin-film capacitor, inverter, motor, input voltage acquisition module, bus current acquisition module, rotating speed station acquisition
Module, speed error module, rotating speed PI modules, bus current give module, bus current error module, electric current PI modules, PWM
Control module, phase change logic module；
The power circuit is single phase alternating current power supply, for providing single-phase alternating current for rectifier；
The rectifier is single-phase uncontrollable rectifier device, for being direct current by single-phase input AC rectification, and is supplied to inverter
Electricity；
The thin-film capacitor connection rectifier output end two ends；
The inverter is three-phase voltage source type inverter, the voltage pulse for receiving pulse width modulation module, and according to voltage
Pulse Width Control motor；
The input voltage acquisition module is used to gather net side input voltage, and sends to the given module of bus current；
The bus current acquisition module is used to gather the electric current of inverter input side, and is sent to bus current error module；
The rotating speed station acquisition module is used to gather motor speed and rotor-position, and sends to speed error module, commutation
Logic module；
The speed error module is used for the motor speed contrast for collecting given rotating speed and the rotating speed station acquisition module,
Speed error is obtained, and sends it to rotating speed PI modules；
The rotating speed PI modules are used to for speed error to carry out PI regulations, obtain bus current vector, and send to bus current
Given module；
The given module of the bus current is used to calculate bus and give according to input voltage, bus current vector, thin-film capacitor capacitance
Determine electric current, and send it to bus current error module；
The bus current error module is used to contrast the given electric current of bus with bus actual current, obtains bus current mistake
Difference, and send it to electric current PI modules；
The electric current PI modules are used to for bus current error to carry out PI regulations, obtain dutycycle, and send to PWM control moulds
Block；
The phase change logic module is used to determine that power tube turns on situation according to motor rotor position；
The PWM control modules are square wave control, for driving letter according to dutycycle and power tube conducting situation generation square wave PWM
Number, and send to inverter.
2. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1, it is special
Levy and be, the motor is brshless DC motor.
3. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1 is realized
Control method, it is characterised in that comprise the following steps：
Real-time Collection single phase ac input voltage and DC bus current, motor in real time rotor-position and rotating speed；
The error of given motor speed and the motor in real time rotating speed is calculated, and PI regulations are carried out to speed error；
Calculate the given electric current of bus current；
The given electric current of bus and actual bus current error are calculated, and PI regulations are carried out to current error, obtain dutycycle；
Judge that power tube turns on situation according to motor rotor position and phase change logic；
According to dutycycle and power tube conducting situation, square wave PWM controls are carried out to inverter, and by inverter control motor.
4. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1 is realized
Control method, it is characterised in that the calculating of the given electric current of the bus is comprised the following steps：
The motor speed and given rotating speed of the Real-time Collection are contrasted, motor revolution error is obtained, the speed error is carried out
PI is adjusted, and obtains bus average current；By the input voltage of the Real-time Collection, bus average current, thin-film capacitor capacitance,
It is calculated the given electric current of bus.
5. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1 is realized
Control method, it is characterised in that the computational methods of the given electric current of the bus are as follows：
Collection net side input voltage is sine wave, its expression formula such as formula (1)：
In formula, vinIt is single phase ac input voltage, U is single phase ac input voltage virtual value, ωinIt is single-phase input voltage angle speed
Degree.
Assuming that net side input is unit power factor, input voltage and input current are sine wave, and both same-phases, so
Shown in preferable input current such as formula (2)：
In formula,It is system ideal input current, I is single phase ac ideal input current virtual value, ωinIt is single-phase input voltage
Angular speed；
Capacitance is calculated for the ideal compensative current such as formula (3) of the thin-film capacitor of C is shown：
Wherein, sign is sign function, specific function such as following formula (4)：
Preferable bus current is the preferable input current after rectification, and it is the preferable input electricity of system to calculate the input current of inverter
Stream absolute value subtracts capacitance compensation electric current, as shown in formula (5)：
Because in square wave control, bus current is high frequency chopping, so the bus current of collection need to be by a first-order low-pass
Bus current value of feedback i can be just obtained after ripple devicedc, the phase offset of bus current value of feedback is so caused, therefore it is given
Value will also carry out phase compensation, to ensure the same-phase of single phase ac input current and input voltage.Low-pass first order filter is produced
Raw phase delay computing formula, as shown in formula (6)：
In formula, f is the frequency of input signal, the i.e. frequency of bus current；fcIt is the cut-off frequency of wave filter.
Finally, shown in bus current set-point such as formula (7)：
Wherein, B is that speed error PI adjusts output valve；λ is phase offset compensation.
6. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1 is realized
Control method, it is characterised in that phase change logic is comprised the following steps：
Weak magnetic advance angle is subtracted by motor rotor position, then judges work sector, determine the conducting situation of power tube.
7. a kind of brushless DC motor control system based on no electrolytic capacitor inverter according to claim 1 is realized
Control method, it is characterised in that PWM controls are comprised the following steps：
Square wave PWM type of drive is PWM_ON_PWM, i.e., in 120 ° of ON times of a certain phase, first 30 ° is chop control, in
Between 60 ° be Heng Tong, afterwards 30 ° be chop control.The duty that the power tube conducting situation and electric current PI obtained by phase change logic are exported
Than determining that 6 road PWM drive signals are specifically opened and the shut-off moment come jointly.
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| CN201710195069.8A CN106788048A (en) | 2017-03-23 | 2017-03-23 | Brushless DC motor control system and control method based on no electrolytic capacitor inverter |
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| CN107204727A (en) * | 2017-06-05 | 2017-09-26 | 东南大学 | A kind of low capacity thin-film capacitor permagnetic synchronous motor direct-axis current is to locking control method |
| CN110239104A (en) * | 2019-05-05 | 2019-09-17 | 诸暨市逍遥管道科技有限公司 | The method that DC inversion electro-fusion welding machine output voltage compensates automatically |
| CN111614288A (en) * | 2019-08-30 | 2020-09-01 | 长城汽车股份有限公司 | Control method and controller |
| WO2021016782A1 (en) * | 2019-07-29 | 2021-02-04 | 广东美的白色家电技术创新中心有限公司 | Commutation control method and device for brushless direct current motor, and storage medium |
| CN112350597A (en) * | 2019-08-09 | 2021-02-09 | 美的威灵电机技术（上海）有限公司 | Control device and control method for electrolytic capacitor-free inverter and motor control system |
| CN113098365A (en) * | 2021-03-25 | 2021-07-09 | 西安交通大学 | Method and system for suppressing network side current harmonic of motor driving system without electrolytic capacitor |
| CN113395021A (en) * | 2021-07-13 | 2021-09-14 | 北京航空航天大学 | Buck converter-based brushless direct current motor low-power-consumption driving system and method |
| CN114301361A (en) * | 2021-12-20 | 2022-04-08 | 浙江大学 | Control method of electrolytic capacitor-free permanent magnet synchronous motor driving system based on bus current control |
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| CN107204727A (en) * | 2017-06-05 | 2017-09-26 | 东南大学 | A kind of low capacity thin-film capacitor permagnetic synchronous motor direct-axis current is to locking control method |
| CN107204727B (en) * | 2017-06-05 | 2019-10-11 | 东南大学 | A kind of low capacity thin-film capacitor permanent magnet synchronous motor direct-axis current given controled method |
| CN110239104A (en) * | 2019-05-05 | 2019-09-17 | 诸暨市逍遥管道科技有限公司 | The method that DC inversion electro-fusion welding machine output voltage compensates automatically |
| CN110239104B (en) * | 2019-05-05 | 2021-08-27 | 诸暨市逍遥管道科技有限公司 | Method for automatically compensating output voltage of direct current inversion electric fusion welding machine |
| US11689140B2 (en) | 2019-07-29 | 2023-06-27 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Commutation control method and device for brushless direct current motor, and storage medium |
| WO2021016782A1 (en) * | 2019-07-29 | 2021-02-04 | 广东美的白色家电技术创新中心有限公司 | Commutation control method and device for brushless direct current motor, and storage medium |
| CN112350597A (en) * | 2019-08-09 | 2021-02-09 | 美的威灵电机技术（上海）有限公司 | Control device and control method for electrolytic capacitor-free inverter and motor control system |
| CN112350597B (en) * | 2019-08-09 | 2022-01-04 | 美的威灵电机技术（上海）有限公司 | Control device and control method for electrolytic capacitor-free inverter and motor control system |
| CN111614288B (en) * | 2019-08-30 | 2021-12-10 | 长城汽车股份有限公司 | Control method and controller |
| CN111614288A (en) * | 2019-08-30 | 2020-09-01 | 长城汽车股份有限公司 | Control method and controller |
| CN113098365A (en) * | 2021-03-25 | 2021-07-09 | 西安交通大学 | Method and system for suppressing network side current harmonic of motor driving system without electrolytic capacitor |
| CN113395021A (en) * | 2021-07-13 | 2021-09-14 | 北京航空航天大学 | Buck converter-based brushless direct current motor low-power-consumption driving system and method |
| CN113395021B (en) * | 2021-07-13 | 2022-06-10 | 北京航空航天大学 | Buck converter-based brushless direct current motor low-power-consumption driving system and method |
| CN114301361A (en) * | 2021-12-20 | 2022-04-08 | 浙江大学 | Control method of electrolytic capacitor-free permanent magnet synchronous motor driving system based on bus current control |
| CN114301361B (en) * | 2021-12-20 | 2024-01-30 | 浙江大学 | Control method of electrolytic capacitor-free permanent magnet synchronous motor driving system based on bus current control |
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Application publication date: 20170531 |