CN108448960A - A kind of four quadrant running magneto power stage real time simulation method - Google Patents
A kind of four quadrant running magneto power stage real time simulation method Download PDFInfo
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- CN108448960A CN108448960A CN201810296636.3A CN201810296636A CN108448960A CN 108448960 A CN108448960 A CN 108448960A CN 201810296636 A CN201810296636 A CN 201810296636A CN 108448960 A CN108448960 A CN 108448960A
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- line voltage
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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
- H02P6/34—Modelling or simulation for control purposes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/032—Reciprocating, oscillating or vibrating motors
- H02P25/034—Voice coil motors
-
- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Abstract
The present invention proposes a kind of four quadrant running magneto power stage real time simulation method.Virtual motor numerical model has been derived based on line voltage, without changing circuit hardware structure in magneto power stage Real-time Simulation System, by changing electromagnetic torque model and counter electromotive force model in virtual coil line voltage model and numerical model, realize the real-time simulation of brshless DC motor and surface-mounted permanent magnet machine, and can real time modifying virtual motor parameter.When durface mounted permanent magnet synchronous motor is simulated, virtual coil line voltage model output line voltage is equal to driver three phase power bridge output line voltage.When brshless DC motor is simulated, virtual coil line voltage model need to first analyze motor it is electronic under different current paths or braking line voltage and phase current between relationship, in conjunction with motor driver output line voltage and battery tension, it obtains and calculates required virtual line voltage for virtual motor mathematical model, realize the real-time simulation of brshless DC motor power stage stable state and transient operation operating mode.
Description
Technical field
The present invention relates to the Real-time Simulation Technology fields of electric system, specifically, being related to a kind of four quadrant running permanent magnetism
Power of motor grade Real-time Simulation System.
Background technology
Magneto has many advantages, such as simple in structure, high efficiency, high reliability, is widely used in automobile, aerospace
Etc. multiple fields, in middle low power motor application be mostly durface mounted permanent magnet synchronous motor and brshless DC motor two types
Motor, and both electric machine structures are similar.Simulation is also known as hardware-in-loop simulation to power stage in real time, refers to power electronic equipment
The virtual motor of composition replaces true motor to connect operation with driver, can be used for true motor driver hardware and its control
The verifications such as algorithm, different parameters motor applicability and its limiting condition.Simulation can solve what true motor had to power stage in real time
The problems such as R＆D cycle is long, difficulty of processing is big, engine bench test is complicated, of high cost, and can realize the whole of signal grade real-time simulation
Function also can carry out true electrical power interaction with driver.
The difficult point that power stage is simulated in real time is that the power electronicsization of virtual motor is realized.Currently, correlative study focuses mostly on
In the signal-level simulation of permanent magnet synchronous motor and induction machine, such as document, " electric propulsion based on mixed logical dynamics passes
Dynamic system hardware assemblage on-orbit " (see《Proceedings of the CSEE》, 2017) and " automobile motor hardware-in-the-loop simulation with
Test platform " (see《Electrotechnics journal》, 2014) and it, using FPGA structure inverters and motor Real-Time Model, passes through
It samples 6 road PWM drive signal of driver and obtains the three-phase voltage of inverter output, and calculated for motor mathematical model.And nothing
Only have two to be conducted when brushless motor stable state, there is the transient state commutation process that section is connected in two stable states in operational process,
Therefore it needs to complete whole operational process stable states in motor real-time simulation operational process and the simulation in section, such as text is connected in transient state
Offer " Real-time simulation of BLDCMs for hardware-in-the-loop applications
Incorporating sensorless control " (see《International Symposium on Power
Electronics》, 2008) and brshless DC motor real-time emulation system established based on DSP and FPGA, it is detected using FPGA
Phase voltage come the phase voltage and phase current values of computation model, and motor conducting state is judged by phase current, but undeclared
How phase-voltage measurement is realized.In practical applications, three-phase drive device is usually drawn without midpoint, is not also allowed to its hardware electricity
Road is changed, therefore the practical value based on phase voltage construction virtual motor numerical model method is limited.In addition, at present
It there are no the correlative study that four quadrant running magneto power stage is simulated in real time.
Invention content
The object of the present invention is to provide a kind of four quadrant running magneto power stage real time simulation methods, based on line electricity
Pressure has derived virtual motor numerical model, is not necessarily to change the hardware knot of circuit in magneto power stage Real-time Simulation System
Structure can realize nothing by changing electromagnetic torque model and counter electromotive force model in virtual coil line voltage model and numerical model
The real-time simulation of brushless motor and surface-mounted permanent magnet machine, and can real time modifying virtual motor parameter, have it is very strong
Versatility and flexibility.And when durface mounted permanent magnet synchronous motor is simulated, virtual coil line voltage model output line voltage is equal to
Driver output line voltage.When brshless DC motor is simulated, virtual coil line voltage model need to first analyze motor in different electric currents
Electronic or between braking line voltage and phase current relationship under path, in conjunction with motor driver output line voltage and accumulator
Voltage calculates required virtual line voltage for virtual motor mathematical model to can get, realizes brshless DC motor work(
The real-time simulation of rate grade stable state and transient operation operating mode.
In order to realize that above-mentioned detection method, the present invention are realized using system as shown in Figure 1, including：Position module,
Electrical power Switching Module, virtual coil line voltage model and virtual motor mathematical model.Wherein, virtual coil line voltage model
Including：Virtual motor type judging unit, virtual brshless DC motor operating status judging unit, virtual brshless DC motor
Electric operation unit and virtual brshless DC motor running under braking unit.Virtual motor mathematical model includes：Phase current model,
Rotating speed model, angle model, electromagnetic torque model and counter electromotive force model.
Wherein, virtual coil line voltage mode input and motor driver output line voltage and supply voltage, phase current mould
Type is connected with angle model；Phase current mode input is connected with virtual coil line voltage model and counter electromotive force model, output with
Electrical power Switching Module is connected with electromagnetic torque model；Rotating speed mode input is connected with electromagnetic torque model, output with instead it is electronic
Potential model is connected with angle model；Position module input is connected with angle model, and output is connected with motor driver；Electrical power
Switching Module is connected with motor driver three phase power bridge；Virtual brshless DC motor operation in virtual coil line voltage module
The input of condition adjudgement unit is connected with virtual motor type judging unit, output and virtual brshless DC motor electric operation list
It is first to be connected with virtual brshless DC motor running under braking unit.
Brshless DC motor is similar with two kinds of electric machine structures of durface mounted permanent magnet synchronous motor, is derived using line voltage virtual
When motor mathematical model, two kinds of virtual motors phase current model having the same, rotating speed model and angle model are not changing
When circuit hardware structure, it can be realized by changing virtual coil line voltage model and electromagnetic torque model and counter electromotive force model
The simulation of brshless DC motor and durface mounted permanent magnet synchronous motor.
The virtual motor type judging unit of virtual coil line voltage model is used to judge the analog type of motor, and defeated
Go out virtual motor mathematical model and calculates required virtual line voltage；When durface mounted permanent magnet synchronous motor is simulated, virtual coil line
Voltage model exports virtual line voltage and is equal to motor driver three phase power bridge output line voltage；It is simulated in brshless DC motor
When, virtual coil line voltage model need to first pass through virtual brshless DC motor operating status judging unit for judging virtual nothing
Brushless motor is electronic or running under braking, output and virtual brshless DC motor electric operation unit or virtual brushless dc
Mechanism moves running unit and is connected, for generating virtual line voltage when electronic or running under braking.
When brshless DC motor is simulated, virtual brshless DC motor electric operation unit or virtual brshless DC motor
Running under braking unit judges the conducting section of virtual motor by the angle signal that angle model exports, and recycles phase current
Model output phase current command signal come judge this section be in two-phase stable state conducting section or transient state be connected section,
Then, steady to analyze virtual brshless DC motor according to motor driver three phase power bridge output line voltage and supply voltage
Virtual line voltage in state or transient state conducting section, and calculated for virtual brshless DC motor mathematical model.
The present invention has following remarkable advantage compared with prior art：1), the virtual magneto derived based on line voltage
Numerical model, it is versatile and easy to operate；2) driver output line voltage, is measured using differential lines voltage detecting circuit, is fitted
For operating condition simulation of the magneto under different control modes；3), when not changing hardware circuit, can pass through
Change electromagnetic torque model and counter electromotive force model in virtual coil line voltage model and numerical model, realizes brushless dc
The real-time simulation of machine and durface mounted permanent magnet synchronous motor operating condition；4) virtual coil line voltage model, is based on, it can be achieved that nothing
The real-time simulation of brushless motor stable state and transient state conducting section operating condition；5), magneto power stage Real-time Simulation System
It is not necessarily to rack in the process of running, at low cost, the R＆D cycle is short, easily facilitates application.
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments：
Description of the drawings
Fig. 1 is magneto power stage Real-time Simulation System structure chart.
Specific implementation mode
The Real-time Simulation System structure chart of magneto power stage shown in Fig. 1, including：Position module (2), electrical power exchange
Module (3), virtual coil line voltage model (4) and virtual motor mathematical model (5).Wherein, virtual coil line voltage model
(4) include：Virtual motor type judging unit (4-1), virtual brshless DC motor operating status judging unit (4-2), void
Quasi- brshless DC motor electric operation unit (4-3) and virtual brshless DC motor running under braking unit (4-4).Virtual motor
Mathematical model (5) includes：Phase current model (5-1), rotating speed model (5-2), angle model (5-3), electromagnetic torque model (5-
And counter electromotive force model (5-5) 4).
Wherein, virtual coil line voltage model (4) input and motor driver (1) output line voltage and supply voltage, phase
Current model (5-1) is connected with angle model (5-3)；Phase current model (5-1) inputs and virtual coil line voltage model (4)
It is connected with counter electromotive force model (5-5), output is connected with electrical power Switching Module (3) and electromagnetic torque model (5-4)；Rotating speed
Model (5-2) input is connected with electromagnetic torque model (5-4), output and counter electromotive force model (5-5) and angle model (5-3)
It is connected；Position module (2) input is connected with angle model (5-3), and output is connected with motor driver (1)；Electrical power interchange mode
Block (3) is connected with motor driver (1) three phase power bridge；Virtual brshless DC motor in virtual coil line voltage module (4)
Operating status judging unit (4-2) input is connected with virtual motor type judging unit (4-1), output and virtual brushless direct-current
Motor powered running unit (4-3) is connected with virtual brshless DC motor running under braking unit (4-4).
In magneto power stage Real-time Simulation System, two kinds of brshless DC motor and durface mounted permanent magnet synchronous motor
Electric machine structure is similar, and virtual motor mathematical model (5), two kinds of virtual motor phase currents having the same are derived using line voltage
Model (5-1), rotating speed model (5-2) and angle model (5-3) can be virtual by changing when not changing circuit hardware structure
Winding wire voltage model (4) and electromagnetic torque model (5-4) and counter electromotive force model (5-5), realize brshless DC motor and
The simulation of durface mounted permanent magnet synchronous motor.
In magneto power stage Real-time Simulation System, phase current model (5-1) is for calculating virtual motor phase current
Command signal ia *、ib *And ic *：
R and L is virtual motor per phase stator resistance and inductance in formula；H is numerical integration step-length；ikAnd ukFor current k when
Carve virtual motor phase current and voltage value；ik-1And uk-1It is taken for past (k-1) a moment virtual motor phase current and voltage
Value；Calculate phase current command signal ia *When, u=Uab+Uac-2ea+eb+ec；Calculate phase current command signal ib *When,
U=-2Uab+Uac+ea-2eb+ec；Phase current command signal ic *=-(ia *-ib *)；ea、ebAnd ecFor virtual motor
Counter electromotive force.
Rotating speed model (5-2) is for calculating virtual motor machinery angular velocity omegam：
F is virtual motor viscosity friction coefficient in formula；J is virtual motor rotary inertia；H is numerical integration step-length；ωk
And nkFor current k moment virtual motor machinery angular speed and torque value；ωk-1And nk-1It is virtual for past (k-1) a moment
Electromechanics angular speed and torque value；Calculate virtual motor machinery angular velocity omegamWhen, n=Te-Tf-Tm；TeFor virtual motor
Electromagnetic torque；TfFor virtual motor stiction；TmFor virtual motor load torque.
Angle model (5-3) calculates angle signal θ for virtual motor：
θ=∫ p ωmdt
P is number of pole-pairs in formula.
Electromagnetic torque model (5-4) is for calculating virtual brshless DC motor electromagnetic torque Te：
Electromagnetic torque model (5-4) is for calculating virtual surface-mount type permanent magnet synchronous motor electromagnetic torque Te：
λ is the magnetic linkage peak value that p-m rotor generates on stator in formula.
Counter electromotive force model (5-5) is for calculating virtual motor counter electromotive force ea、eb、ec：
en=λ p ωmφn
φ in formulanFor with the relevant instantaneous induction electric potential function of rotor-position；Calculate virtual motor back-emf ea、ebWith
ecWhen correspond to φ respectivelya、φbAnd φc；Virtual brshless DC motor is trapezoidal wave or the instantaneous induced electromotive force of sine wave, virtually
Durface mounted permanent magnet synchronous motor is the instantaneous induced electromotive force of sine wave.
The virtual motor type judging unit (4-1) of virtual coil line voltage model (4) is used to judge the simulation class of motor
Type, and export virtual motor mathematical model (5) and calculate required virtual line voltage；When durface mounted permanent magnet synchronous motor is simulated,
Virtual coil line voltage model (4) exports virtual line voltage Uab、UacEqual to motor driver (1) three phase power bridge output line electricity
Press UAB、UAC.When brshless DC motor is simulated, virtual coil line voltage model (4) need to first pass through virtual brshless DC motor
Operating status judging unit (4-2) for judging that virtual brshless DC motor is electronic or running under braking, output with it is virtual brushless straight
It flows motor powered running unit (4-3) or virtual brshless DC motor running under braking unit (4-4) is connected, it is electronic for generating
Or virtual line voltage U when running under brakingab、Uac。
Wherein, virtual brshless DC motor electric operation unit (4-3) or virtual brshless DC motor running under braking unit
(4-4) judges the conducting section of virtual motor by the angle signal θ that angle model (5-3) exports, and recycles phase current mould
The phase current command signal i of type (5-1) outputa *、ib *And ic *To judge that this section is in two-phase stable state conducting section, still
Section is connected in transient state, then, according to motor driver (1) three phase power bridge output line voltage UAB、UAC、UBCAnd supply voltage
Udc, to analyze the virtual line voltage U in virtual brshless DC motor stable state or transient state conducting sectionab、Uac, and it is used for virtual nothing
Brushless motor mathematical model calculates.
Virtual brshless DC motor electric operation unit (4-3) and virtual brshless DC motor running under braking unit (4-4)
Middle phase current instruction and line voltage relationship is：
A) section is connected with the electronic stable state of B phases in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switch
When break-over of device, ia*>0, ib*<0, ic*=0, Uab=Udc, Uac=1/2UdcOr ia*>0, ib*<0, ic*=0, Uab=0, Uac
=0；
B) A phases are changed to B phases in virtual brshless DC motor A phases and section is connected with the electronic transient state of C phases：When bridge arm in A phases
Or when lower bridge arm switch device conductive, ia*>0, ib*<0, ic*<0, Uab=-UD, Uac=UdcOr ia*>0, ib*<0, ic*<0, Uab
=-Udc-UD, Uac=0；
C) section is connected with the electronic stable state of C phases in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switch
When break-over of device, ia*>0, ib*=0, ic*<0, Uab=1/2Udc, Uac=UdcOr ia*>0, ib*=0, ic*<0, Uab=0, Uac
=0；
D) stable state is braked with B phases section is connected in virtual brshless DC motor A phases：When A phases
E) A phases are changed to B phases in virtual brshless DC motor A phases and brakes transient state conducting section with C phases：When bridge arm in A phases
Or when lower bridge arm switch device conductive, ia*<0, ib*>0, ic*>0, Uab=Udc+UD, Uac=UdcOr ia*<0, ib*>0, ic*>0,
Uab=UD, Uac=0；
F) stable state is braked with C phases section is connected in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switch
When break-over of device, ia*<0, ib*=0, ic*>0, Uab=1/2Udc, Uac=UdcOr ia*<0, ib*=0, ic*>0, Uab=0, Uac
=0.
Claims (1)
1. a kind of four quadrant running magneto power stage real time simulation method, which is characterized in that the magneto work(of this method
Rate grade Real-time Simulation System includes position module (2), electrical power Switching Module (3), virtual coil line voltage model (4) and virtual
Motor mathematical model (5)；Wherein virtual coil line voltage model (4) includes virtual motor type judging unit (4-1), virtual nothing
Brushless motor operating status judging unit (4-2), virtual brshless DC motor electric operation unit (4-3) and virtual brushless straight
Flow motor braking running unit (4-4)；Virtual motor mathematical model (5) include phase current model (5-1), rotating speed model (5-2),
Angle model (5-3), electromagnetic torque model (5-4) and counter electromotive force model (5-5)；
Virtual coil line voltage model (4) inputs and motor driver (1) output line voltage and supply voltage, phase current model
(5-1) is connected with angle model (5-3)；Phase current model (5-1) inputs and virtual coil line voltage model (4) and counter electromotive force
Model (5-5) is connected, and output is connected with electrical power Switching Module (3) and electromagnetic torque model (5-4)；Rotating speed model (5-2) is defeated
Enter and be connected with electromagnetic torque model (5-4), output is connected with counter electromotive force model (5-5) and angle model (5-3)；Position module
(2) input is connected with angle model (5-3), and output is connected with motor driver (1)；Electrical power Switching Module (3) drives with motor
Dynamic device (1) three phase power bridge is connected；Virtual brshless DC motor operating status judging unit in virtual coil line voltage module (4)
(4-2) input is connected with virtual motor type judging unit (4-1), output and virtual brshless DC motor electric operation unit
(4-3) is connected with virtual brshless DC motor running under braking unit (4-4)；
Brshless DC motor is similar with two kinds of electric machine structures of durface mounted permanent magnet synchronous motor, and virtual motor number is derived using line voltage
Model (5), two kinds of virtual motors phase current model (5-1) having the same, rotating speed model (5-2) and angle model (5-3),
When not changing circuit hardware structure, by changing virtual coil line voltage model (4) and electromagnetic torque model (5-4) and anti-electricity
Kinetic potential model (5-5) realizes the simulation of brshless DC motor and durface mounted permanent magnet synchronous motor；
Wherein, phase current model (5-1) is for calculating virtual motor phase current command signal ia *、ib *And ic *：
R and L is virtual motor per phase stator resistance and inductance in formula；H is numerical integration step-length；ikAnd ukIt is virtual for the current k moment
Electric machine phase current and voltage value；ik-1And uk-1For past (k-1) a moment virtual motor phase current and voltage value；It calculates
Phase current command signal ia *When, u=Uab+Uac-2ea+eb+ec；Calculate phase current command signal ib *When, u=-2Uab+Uac+ea-
2eb+ec；Phase current command signal ic *=-(ia *-ib *)；ea、ebAnd ecFor virtual motor counter electromotive force；
Rotating speed model (5-2) is for calculating virtual motor machinery angular velocity omegam：
F is virtual motor viscosity friction coefficient in formula；J is virtual motor rotary inertia；H is numerical integration step-length；ωkAnd nkFor
Current k moment virtual motor machinery angular speed and torque value；ωk-1And nk-1For past (k-1) a moment virtual motor machine
Tool angular speed and torque value；Calculate virtual motor machinery angular velocity omegamWhen, n=Te-Tf-Tm；TeTurn for virtual motor electromagnetism
Square；TfFor virtual motor stiction；TmFor virtual motor load torque；
Angle model (5-3) calculates angle signal θ for virtual motor：
θ=∫ p ωmdt
P is number of pole-pairs in formula；
Electromagnetic torque model (5-4) is for calculating virtual brshless DC motor electromagnetic torque TeWhen：
Electromagnetic torque model (5-4) is for calculating virtual surface-mount type permanent magnet synchronous motor electromagnetic torque TeWhen：
λ is the magnetic linkage peak value that p-m rotor generates on stator in formula；
Counter electromotive force model (5-5) is for calculating virtual motor counter electromotive force ea、eb、ec：
en=λ p ωmφn
φ in formulanFor with the relevant instantaneous induction electric potential function of rotor-position；Calculate virtual motor back-emf ea、ebAnd ecTime-division
φ is not corresponded toa、φbAnd φc；Virtual brshless DC motor is trapezoidal wave or the instantaneous induced electromotive force of sine wave, and virtual surface-mount type is forever
Magnetic-synchro motor is the instantaneous induced electromotive force of sine wave；
The virtual motor type judging unit (4-1) of virtual coil line voltage model (4) is used to judge the analog type of motor, and
It exports virtual motor mathematical model (5) and calculates required virtual line voltage；When durface mounted permanent magnet synchronous motor is simulated, virtually around
Group line voltage model (4) exports virtual line voltage Uab、UacEqual to motor driver (1) three phase power bridge output line voltage UAB、
UAC；When brshless DC motor is simulated, virtual coil line voltage model (4) need to first pass through virtual brshless DC motor operating status
Judging unit (4-2) is for judging that virtual brshless DC motor is electronic or running under braking, output are electromechanical with virtual brushless dc
Dynamic running unit (4-3) or virtual brshless DC motor running under braking unit (4-4) are connected, for generating electronic or running under braking
When virtual line voltage Uab、Uac；
Wherein, virtual brshless DC motor electric operation unit (4-3) or virtual brshless DC motor running under braking unit (4-4)
Judge the conducting section of virtual motor by the angle signal θ of angle model (5-3) output, recycles phase current model (5-
1) the phase current command signal i exporteda *、ib *And ic *To judge that this section is led in two-phase stable state conducting section or transient state
Logical section, then, according to motor driver (1) three phase power bridge output line voltage UAB、UAC、UBCAnd supply voltage Udc, to analyze
Virtual line voltage U in virtual brshless DC motor stable state or transient state conducting sectionab、Uac, and it is used for virtual brshless DC motor
Mathematical model calculates；
Phase in virtual brshless DC motor electric operation unit (4-3) and virtual brshless DC motor running under braking unit (4-4)
Current-order is with line voltage relationship：
A) section is connected with the electronic stable state of B phases in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switching device
When conducting, ia*>0, ib*<0, ic*=0, Uab=Udc, Uac=1/2UdcOr ia*>0, ib*<0, ic*=0, Uab=0, Uac=0；
B) A phases are changed to B phases in virtual brshless DC motor A phases and section is connected with the electronic transient state of C phases：When bridge arm in A phases or under
When bridge arm switch device conductive, ia*>0, ib*<0, ic*<0, Uab=-UD, Uac=UdcOr ia*>0, ib*<0, ic*<0, Uab=-
Udc-UD, Uac=0；
C) section is connected with the electronic stable state of C phases in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switching device
When conducting, ia*>0, ib*=0, ic*<0, Uab=1/2Udc, Uac=UdcOr ia*>0, ib*=0, ic*<0, Uab=0, Uac=0；
D) stable state is braked with B phases section is connected in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switching device
When conducting, ia*<0, ib*>0, ic*=0, Uab=Udc, Uac=1/2UdcOr ia*<0, ib*>0, ic*=0, Uab=0, Uac=0；
E) A phases are changed to B phases in virtual brshless DC motor A phases and brakes transient state conducting section with C phases：When bridge arm in A phases or under
When bridge arm switch device conductive, ia*<0, ib*>0, ic*>0, Uab=Udc+UD, Uac=UdcOr ia*<0, ib*>0, ic*>0, Uab=
UD, Uac=0；
F) stable state is braked with C phases section is connected in virtual brshless DC motor A phases：When bridge arm in A phases or lower bridge arm switching device
When conducting, ia*<0, ib*=0, ic*>0, Uab=1/2Udc, Uac=UdcOr ia*<0, ib*=0, ic*>0, Uab=0, Uac=0.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839830A (en) * | 2019-03-05 | 2019-06-04 | 清华大学 | A kind of the power stage analog control method and device of three phase alternating current motor |
| CN111857197A (en) * | 2020-07-30 | 2020-10-30 | 南京邮电大学 | Three-phase alternating current motor and load simulation method and device thereof |
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