CN108462425A - The variable frequency regulating speed control method and system of monophase machine - Google Patents
The variable frequency regulating speed control method and system of monophase machine Download PDFInfo
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- CN108462425A CN108462425A CN201810070164.XA CN201810070164A CN108462425A CN 108462425 A CN108462425 A CN 108462425A CN 201810070164 A CN201810070164 A CN 201810070164A CN 108462425 A CN108462425 A CN 108462425A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
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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
- H02P25/04—Single phase motors, e.g. capacitor motors
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Abstract
A kind of variable frequency regulating speed control method of monophase machine, by the M axis deviations voltage and T axis deviation voltages that calculate frequency converter；Anti- PARK is carried out to M axis deviations voltage and T axis deviations voltage and converts to obtain level angle V under two-phase static coordinate1, and calculate voltage vector magnitude VOut；The level angle V of MT axis and two-phase static coordinate is calculated according to magnetic flux identification2；By level angle V1With level angle V2It is overlapped, calculates voltage vector angle V3；According to the corresponding space vector of voltage of inversion unit on off state of frequency converter and the voltage vector angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle；Calculate given voltage vector；The sequence of operation of fundamental space vector is determined according to SVPWM methods, and calculates the action time of each fundamental space vector, and then exports pulse-modulated signal control inversion unit bridge arm timesharing action, driving monophase machine operation.Further, it would be desirable to provide a kind of frequency-converting speed-governing control systems of monophase machine.
Description
Technical field
The present invention relates to frequency converters, more particularly to a kind of frequency control of wide, the with high accuracy monophase machine of speed adjustable range
Control method and system.
Background technology
Single-phase asynchronous motor is easy to maintain because its is simple in structure, cheap, sturdy and durable, is widely used in household
Electric appliance and small-power industrial equipment application scenario, such as air compressor, air regulator, refrigerator, washing machine, water pump.At present
Speed regulator of single-phase motor method mainly has following methods：
Scheme one：Reactor speed governing seals in a variable reactance for carrying multiple taps in monophase machine input power side
Device acts on the partial pressure of input power by reactor to change monophase machine input voltage, to realize the mesh of variable voltage speed control
's.
Scheme two：Tap speed-regulating is placed main winding, auxiliary winding and speed governing winding in single-phase electric machine stator slot, is passed through
The connection type for changing speed governing winding and main winding and auxiliary winding realizes speed governing purpose, and this method speed efficiency is higher, output torque characteristic
Preferably.
Scheme three：Frequency converter+inductance or transformer arbitrary two connect enough appearances what frequency converter three-phase (U, V, W) exported
The inductance or transformer of amount, then will output access monophase machine, this method need not change in monophase machine capacitance and around upper
The mode of connection can realize the purpose of continuous speed adjustment.
Existing motor control speed adjustable range is limited, and when low pressure, motor output torque is small, and steady speed precision is poor, only suitable
For being lightly loaded speed governing occasion.Or can only realize step speed regulation, continuous speed adjustment cannot be carried out, while being limited by electric machine structure.Or
It is the not applicable monophase machine with centrifugal switch, the two-phase because only using frequency converter exports, and six bridge power consumption of inversion is not
Balance be easy to cause the damage of wherein 4 bridge arms, and output current is big, and the capacity of frequency converter is bigger than monophase machine power.
Invention content
Based on this, it is necessary to provide a kind of wide, the with high accuracy monophase machine of speed adjustable range variable frequency regulating speed control method and
System.
A kind of variable frequency regulating speed control method of monophase machine, includes the following steps：
Calculate the M axis deviations voltage and T axis deviation voltages of frequency converter；
Anti- PARK is carried out to the M axis deviations voltage and the T axis deviations voltage to convert to obtain under two-phase static coordinate
Level angle V1, and calculate voltage vector magnitude VOut；
The level angle V of MT axis and two-phase static coordinate is calculated according to magnetic flux identification2；
By the level angle V1With the level angle V2It is overlapped, calculates voltage vector angle V3；
According to the corresponding space vector of voltage of inversion unit on off state of frequency converter and the voltage vector angle V3, meter
The neighbouring fundamental space vector and zero vector of sector where calculating under the angle；
Given voltage vector is calculated according to the fundamental space vector sum zero vector；
The sequence of operation of the fundamental space vector is determined according to SVPWM methods, and calculates each fundamental space vector
Action time, and then export pulse-modulated signal control inversion unit bridge arm timesharing action, driving monophase machine operation.
The step of M axis deviation voltages for calculating frequency converter include in one of the embodiments,：
By the deviation signal between exciting current given value and exciting current feedback value, carries out PI and adjust to obtain M axis deviations
Voltage.
Further include in one of the embodiments,：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, exciting current feedback value and exciting current given value are obtained.
The step of T axis deviation voltages for calculating frequency converter include in one of the embodiments,：
By the deviation signal between torque current given value and torque current feedback value, carries out PI and adjust to obtain T axis deviations
Voltage.
Further include in one of the embodiments,：
The setpoint frequency for obtaining monophase machine carries out acceleration, deceleration time-triggered protocol to the setpoint frequency and obtains current time
Given frequency；
The deviation signal between frequency WmId and current time given frequency is obtained according to Speed identification method, and to described
Deviation signal carries out PI and adjusts acquisition torque current given value.
Further include in one of the embodiments,：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, torque current feedback value is obtained.
A kind of frequency-converting speed-governing control system of monophase machine, including rectification module, inverter module, further include main control module and
Drive module；
The rectification module is used to carry out rectification processing to input power, and power supply is exported to main control module by treated
And inverter module；The main control module is used to calculate the M axis deviations voltage and T axis deviation voltages of frequency converter；
The main control module is additionally operable to get the M axis deviations voltage and the anti-PARK changes of T axis deviations voltage progress in return
Level angle V under to two-phase static coordinate1, and calculate voltage vector magnitude VOut；
The main control module is additionally operable to calculate the level angle V of MT axis and two-phase static coordinate according to magnetic flux identification2；
The main control module is additionally operable to the level angle V1With the level angle V2It is overlapped, calculates voltage
Vector angle V3；
The inversion unit be used for according to the corresponding space vector of voltage of inversion unit on off state of frequency converter with it is described
Voltage vector angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle；
The main control module is additionally operable to calculate given voltage vector according to the fundamental space vector sum zero vector；
The drive module is used to determine the sequence of operation of the fundamental space vector according to SVPWM methods, and calculates every
The action time of a fundamental space vector, and then output pulse-modulated signal controls the bridge arm timesharing in the inverter module and moves
Make, makes the inverter module control driving monophase machine operation.
Further include current detection module in one of the embodiments, the current detection module is for detecting single-phase electricity
W phases in the output of machine three-phase and U phase currents；And W phases and U phase currents are sent to the main control module；The main control module is used
According to monophase machine principle, exciting current feedback value and exciting current given value are obtained.
The main control module is additionally operable to obtain the setpoint frequency of monophase machine in one of the embodiments, is set to described
Determine frequency progress acceleration, deceleration time-triggered protocol and obtains current time given frequency；
The main control module is additionally operable to be obtained between frequency WmId and current time given frequency according to Speed identification method
Deviation signal, and to the deviation signal carry out PI adjust obtain torque current given value.
The main control module is additionally operable to exciting current given value and exciting current feedback value in one of the embodiments,
Between deviation signal, carry out PI adjust to obtain M axis deviation voltages；And
The main control module is additionally operable to, by the deviation signal between torque current given value and torque current feedback value, carry out
PI adjusts to obtain T axis deviation voltages.
The variable frequency regulating speed control method and system of above-mentioned monophase machine calculate the M axis deviations voltage and T axis deviations of frequency converter
Voltage；Anti- PARK is carried out to M axis deviations voltage and T axis deviations voltage and converts to obtain level angle V under two-phase static coordinate1,
And calculate voltage vector magnitude VOut；The level angle V of MT axis and two-phase static coordinate is calculated according to magnetic flux identification2；By institute
State level angle V1With the level angle V2It is overlapped, calculates voltage vector angle V3；According to the inversion unit of frequency converter
The corresponding space vector of voltage of on off state and the voltage vector angle V3, the neighbouring base of sector where calculating under the angle
This space vector and zero vector；Given voltage vector is calculated according to the fundamental space vector sum zero vector；According to the side SVPWM
Method determines the sequence of operation of the fundamental space vector, and calculates the action time of each fundamental space vector, and then exports arteries and veins
Modulated signal controls inversion unit bridge arm timesharing action, driving monophase machine operation.The above method and system are by coordinate
Transformation and field orientation decoupling current control monophase machine, and the speed of monophase machine is controlled using SVPWM modulation techniques, because
And make the speed adjustable range of monophase machine wide and precision higher.
Description of the drawings
Fig. 1 is the flow chart of the variable frequency regulating speed control method of single-phase single machine；
Fig. 2 is the module map of the frequency-converting speed-governing control system of single-phase single machine.
Specific implementation mode
To facilitate the understanding of the present invention, below with reference to relevant drawings to invention is more fully described.In attached drawing
Give presently preferred embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.Keep the understanding to the disclosure more thorough on the contrary, purpose of providing these embodiments is
Comprehensively.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more related
Listed Items any and all combinations.
As shown in Figure 1, the flow chart of the variable frequency regulating speed control method for single-phase single machine.
A kind of variable frequency regulating speed control method of monophase machine, includes the following steps：
Step S110 calculates the M axis deviations voltage and T axis deviation voltages of frequency converter.
In the present embodiment, the step of M axis deviation voltages for calculating frequency converter includes：
By the deviation signal between exciting current given value and exciting current feedback value, carries out PI and adjust to obtain M axis deviations
Voltage.
Therefore, it also needs to calculate exciting current given value and exciting current feedback value before calculating M axis deviation voltages.
Therefore the variable frequency regulating speed control method of monophase machine further includes：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, exciting current feedback value and exciting current given value are obtained.
In the present embodiment, the step of T axis deviation voltages for calculating frequency converter includes：
By the deviation signal between torque current given value and torque current feedback value, carries out PI and adjust to obtain T axis deviations
Voltage.
Therefore, it also needs to calculate torque current given value and torque current feedback value before calculating T axis deviation voltages.
Therefore the variable frequency regulating speed control method of monophase machine further includes：
The setpoint frequency for obtaining monophase machine carries out acceleration, deceleration time-triggered protocol to the setpoint frequency and obtains current time
Given frequency；
The deviation signal between frequency WmId and current time given frequency is obtained according to Speed identification method, and to described
Deviation signal carries out PI and adjusts acquisition torque current given value.
Therefore the variable frequency regulating speed control method of monophase machine further includes：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, torque current feedback value is obtained.
Step S112, to the M axis deviations voltage and the T axis deviations voltage carry out anti-PARK convert to obtain two-phase it is static
Level angle V under coordinate1, and calculate voltage vector magnitude VOut。
Step S114 calculates the level angle V of MT axis and two-phase static coordinate according to magnetic flux identification2。
Step S116, by the level angle V1With the level angle V2It is overlapped, calculates voltage vector angle
V3。
Step S118, according to the corresponding space vector of voltage of inversion unit on off state of frequency converter and the voltage vector
Angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle.
Step S120 calculates given voltage vector according to the fundamental space vector sum zero vector.
Step S122 determines the sequence of operation of the fundamental space vector according to SVPWM methods, and calculates each substantially empty
Between vector action time, and then export pulse-modulated signal control inversion unit bridge arm timesharing action, drive monophase machine
Operation.
Based on above-described embodiment, the course of work of the variable frequency regulating speed control method of above-mentioned monophase machine is as follows：
Current phasor be decomposed into mutually by the above method to track round magnetic field as target in field orientation coordinate
Vertical exciting current and torque current, is independently controlled the two, adjusts respectively, utilizes SVPWM technical controlling inversion lists
The output voltage of member, reaches speed regulator of single-phase motor purpose, and specific implementation key step is as follows：
In high speed interrupt, by W, U phase current in current detection circuit detection monophase machine three-phase output.
According to monophase machine principle, flows through main winding current and spatially differ 90 ° with auxiliary winding electric current.Wherein, it flows
It is torque current to cross main winding current, and it is exciting current to flow through auxiliary winding electric current.
According to deviation signal between exciting current given value and exciting current feedback value, deviation electricity is obtained by pi regulator
Pressure.
When measuring motor setpoint frequency by keyboard or external analog, then obtaining current by acceleration, deceleration time-triggered protocol
Carve given frequency.
By the deviation signal between the frequency WmId recognized by Speed identification method and given frequency, pass through pi regulator
Obtain torque current given value.
By the deviation signal between torque current given value and torque current feedback value, obtained by pi regulator inclined
Potential difference UtOut；
Obtained M shaft voltage UmOut and T shaft voltages UtOut is converted to obtain electricity under two-phase static coordinate by anti-PARK
Press angle V1, while calculating voltage vector magnitude VOut；
The level angle V of MT axis and two-phase static coordinate is calculated by magnetic flux identification2, and with level angle V1It is folded
Add, calculates voltage vector angle V3。
In conjunction with the corresponding 8 fundamental voltage space vectors of two-phase six bridge arm inversion units, 8 kinds of on off states and voltage
Vector angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle, by these basic voltage vectors
Average value after being combined with zero vector is equal with given voltage vector.
When using SVPWM methods, determining the sequence of operation of basic voltage vectors, and calculating each fundamental space vector effect
Between, 6 bridge arm timesharing action in output PWM wave control inversion unit, driving monophase machine operation.
Usual monophase machine mostly uses the series capacitance in auxiliary winding, and change is flowed through between auxiliary winding and main winding current
Phase difference, to which rotor obtains certain detent torque so that monophase machine rotates.Pass through manual switch or change wiring side
Formula changes main winding and auxiliary winding phase difference angle and forwards and reverses switching.It is single at this time when main winding and auxiliary winding current and phase difference is 90 °
Phase motor can obtain more satisfactory circular rotating field, to export larger detent torque, obtain preferable runnability.Cause
This, above method proposition is borrowed using Realization of pulse width modulation based on voltage space vector (SVPWM) technology from speed regulator of single-phase motor principle
It helping coordinate transform to carry out field orientation and decomposes control, output PWM wave control six bridge arm inversion unit of two-phase exports three-phase alternating current,
To control monophase machine rotation.It needs to remove the capacitance of monophase machine and switching switch before above method driving monophase machine,
Main winding is accessed into inversion unit W phases, auxiliary winding accesses inversion unit U phases, and inversion unit V phases are accessed in common end.
As shown in Fig. 2, the module map of the frequency-converting speed-governing control system for monophase machine.
A kind of frequency-converting speed-governing control system of monophase machine, including rectification module, inverter module 102, further include master control mould
Block and drive module 104；
Rectification module is used to carry out rectification processing to input power, and power supply is exported to main control module 103 by treated
With inverter module 102；Main control module 103 is used to calculate the M axis deviations voltage and T axis deviation voltages of frequency converter；
Main control module 103 be additionally operable to M axis deviations voltage and T axis deviation voltages carry out anti-PARK convert to obtain two-phase it is static
Level angle V under coordinate1, and calculate voltage vector magnitude VOut；
Main control module 103 is additionally operable to calculate the level angle V of MT axis and two-phase static coordinate according to magnetic flux identification2；
Main control module 103 is additionally operable to level angle V1With level angle V2It is overlapped, calculates voltage vector angle
V3；
Inversion unit is used for the corresponding space vector of voltage of inversion unit on off state and voltage vector according to frequency converter
Angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle；
Main control module 103 is additionally operable to calculate given voltage vector according to fundamental space vector sum zero vector；
Drive module 104 is used to determine the sequence of operation of fundamental space vector according to SVPWM methods, and calculates each basic
The action time of space vector, and then the bridge arm timesharing action in pulse-modulated signal control inverter module 102 is exported, make inversion
The control driving monophase machine operation of module 102.
In the present embodiment, rectification module is rectified into direct current by 220v single-phase alternating currents are inputted, and is after filtered processing
Inversion unit and main control module 103 provide power supply.
Inverter module 102 is made of six bridge arm inverter module 102 of two-phase, is controlled by main control module 103, through drive module
Six tunnel power switch tube timesharing actions, frequency and the adjustable alternating current of amplitude are converted by direct current in 104 control inversion units,
Driving motor rotates.
Failure protection module is monitored for system peripherals, and when occurring abnormal, failure exception hardware signal is sent
To main control module 103, main control module 103 carries out respective handling to different fault-signals, to play the protective effect to system,
Including overcurrent protection, overvoltage protection, under-voltage protection, overheat protector etc..
Periphery input, output module provide periphery input, output signal, including simulation for auxiliary above system
Measure input/output, On-off signal/output, relay output etc..
Keyboard provides man-machine interface with display module for above system, convenient to be supervised to system parameter setting and systematic parameter
Control.
Main control module 103 is for troubleshooting, external input, output data processing, current/voltage sampling, field orientation
Decomposition and control, SVPWM calculating etc..
The frequency-converting speed-governing control system of monophase machine further includes voltage detection module 105, and voltage detection module 105 is for examining
The voltage swing of rectification module output is surveyed, and feeds back to main control module 103.
The frequency-converting speed-governing control system of monophase machine further includes current detection module 106, and current detection module 106 is for examining
Survey the W phases and U phase currents in the output of monophase machine three-phase；And W phases and U phase currents are sent to main control module 103；Main control module
103 for according to monophase machine principle, obtaining exciting current feedback value and exciting current given value.
Main control module 103 is additionally operable to obtain the setpoint frequency of monophase machine, and acceleration, deceleration time-triggered protocol is carried out to setpoint frequency
Obtain current time given frequency；
Main control module 103 is additionally operable to be obtained between frequency WmId and current time given frequency according to Speed identification method
Deviation signal, and PI is carried out to deviation signal and adjusts acquisition torque current given value.
Main control module 103 is additionally operable to, by the deviation signal between exciting current given value and exciting current feedback value, carry out
PI adjusts to obtain M axis deviation voltages；And
Main control module 103 is additionally operable to, by the deviation signal between torque current given value and torque current feedback value, carry out
PI adjusts to obtain T axis deviation voltages.
The variable frequency regulating speed control method and system of above-mentioned monophase machine calculate the M axis deviations voltage and T axis deviations of frequency converter
Voltage；Anti- PARK is carried out to M axis deviations voltage and T axis deviations voltage and converts to obtain level angle V under two-phase static coordinate1,
And calculate voltage vector magnitude VOut；The level angle V of MT axis and two-phase static coordinate is calculated according to magnetic flux identification2；By institute
State level angle V1With the level angle V2It is overlapped, calculates voltage vector angle V3；According to the inversion unit of frequency converter
The corresponding space vector of voltage of on off state and the voltage vector angle V3, the neighbouring base of sector where calculating under the angle
This space vector and zero vector；Given voltage vector is calculated according to the fundamental space vector sum zero vector；According to the side SVPWM
Method determines the sequence of operation of the fundamental space vector, and calculates the action time of each fundamental space vector, and then exports arteries and veins
Modulated signal controls inversion unit bridge arm timesharing action, driving monophase machine operation.The above method and system are by coordinate
Transformation and field orientation decoupling current control monophase machine, and the speed of monophase machine is controlled using SVPWM modulation techniques, because
And make the speed adjustable range of monophase machine wide and precision higher.
The above method and the starting current of system are small, can carry out frequent starting control and turn, reversion switching is flexible, acceleration and deceleration
Time arbitrarily sets；Power factor (PF) height, good energy-conserving effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of variable frequency regulating speed control method of monophase machine, includes the following steps：
Calculate the M axis deviations voltage and T axis deviation voltages of frequency converter；
Anti- PARK is carried out to the M axis deviations voltage and the T axis deviations voltage to convert to obtain the voltage under two-phase static coordinate
Angle V1, and calculate voltage vector magnitude VOut；
The level angle V of MT axis and two-phase static coordinate is calculated according to magnetic flux identification2；
By the level angle V1With the level angle V2It is overlapped, calculates voltage vector angle V3；
According to the corresponding space vector of voltage of inversion unit on off state of frequency converter and the voltage vector angle V3, calculate
The neighbouring fundamental space vector and zero vector of sector where under the angle；
Given voltage vector is calculated according to the fundamental space vector sum zero vector；
The sequence of operation of the fundamental space vector is determined according to SVPWM methods, and calculates the effect of each fundamental space vector
Time, and then export pulse-modulated signal control inversion unit bridge arm timesharing action, driving monophase machine operation.
2. the variable frequency regulating speed control method of monophase machine according to claim 1, which is characterized in that the calculating frequency converter
M axis deviation voltages the step of include：
By the deviation signal between exciting current given value and exciting current feedback value, carries out PI and adjust to obtain M axis deviation voltages.
3. the variable frequency regulating speed control method of monophase machine according to claim 2, which is characterized in that further include：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, exciting current feedback value and exciting current given value are obtained.
4. the variable frequency regulating speed control method of monophase machine according to claim 1, which is characterized in that the calculating frequency converter
T axis deviation voltages the step of include：
By the deviation signal between torque current given value and torque current feedback value, carries out PI and adjust to obtain T axis deviation voltages.
5. the variable frequency regulating speed control method of monophase machine according to claim 4, which is characterized in that further include：
It is given to obtain current time to setpoint frequency progress acceleration, deceleration time-triggered protocol for the setpoint frequency for obtaining monophase machine
Frequency；
The deviation signal between frequency WmId and current time given frequency is obtained according to Speed identification method, and to the deviation
Signal carries out PI and adjusts acquisition torque current given value.
6. the variable frequency regulating speed control method of monophase machine according to claim 4, which is characterized in that further include：
Detect the W phases and U phase currents in the output of monophase machine three-phase；
According to monophase machine principle, torque current feedback value is obtained.
7. a kind of frequency-converting speed-governing control system of monophase machine, including rectification module, inverter module, which is characterized in that further include
Main control module and drive module；
The rectification module is used to carry out rectification processing to input power, and will treated that power supply exports to main control module and inverse
Become module；The main control module is used to calculate the M axis deviations voltage and T axis deviation voltages of frequency converter；
The main control module is additionally operable to convert to obtain two to the M axis deviations voltage and the anti-PARK of T axis deviations voltage progress
Level angle V under phase static coordinate1, and calculate voltage vector magnitude VOut；
The main control module is additionally operable to calculate the level angle V of MT axis and two-phase static coordinate according to magnetic flux identification2；
The main control module is additionally operable to the level angle V1With the level angle V2It is overlapped, calculates voltage vector
Angle V3；
The inversion unit is used for the corresponding space vector of voltage of inversion unit on off state according to frequency converter and the voltage
Vector angle V3, the neighbouring fundamental space vector and zero vector of sector where calculating under the angle；
The main control module is additionally operable to calculate given voltage vector according to the fundamental space vector sum zero vector；
The drive module is used to determine the sequence of operation of the fundamental space vector according to SVPWM methods, and calculates each base
The action time of this space vector, and then export pulse-modulated signal and control the action of the bridge arm timesharing in the inverter module, make
The inverter module control driving monophase machine operation.
8. the frequency-converting speed-governing control system of monophase machine according to claim 7, which is characterized in that further include current detecting
Module, the current detection module are used to detect W phases and U phase currents in the output of monophase machine three-phase；And it is W phases and U phases is electric
Stream is sent to the main control module；The main control module is used to, according to monophase machine principle, obtain exciting current feedback value and encourage
Magnetoelectricity stream given value.
9. the frequency-converting speed-governing control system of monophase machine according to claim 7, which is characterized in that the main control module is also
It is given to obtain current time to setpoint frequency progress acceleration, deceleration time-triggered protocol for setpoint frequency for obtaining monophase machine
Frequency；
The main control module is additionally operable to be obtained according to Speed identification method inclined between frequency WmId and current time given frequency
Difference signal, and PI is carried out to the deviation signal and adjusts acquisition torque current given value.
10. the frequency-converting speed-governing control system of monophase machine according to claim 7, which is characterized in that the main control module
It is additionally operable to, by the deviation signal between exciting current given value and exciting current feedback value, carry out PI and adjust to obtain M axis deviation electricity
Pressure；And
The main control module is additionally operable to, by the deviation signal between torque current given value and torque current feedback value, carry out PI tune
Section obtains T axis deviation voltages.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162685A (en) * | 2020-01-17 | 2020-05-15 | 深圳市东力科创技术有限公司 | Control method and system of single-phase photovoltaic water pump inverter with BOOST boosting function |
| CN112260607A (en) * | 2020-11-03 | 2021-01-22 | 儒竞艾默生环境优化技术（上海）有限公司 | Motor driver, motor speed control method and control system |
| CN113783476A (en) * | 2021-09-16 | 2021-12-10 | 深圳市海浦蒙特科技有限公司 | Single-phase motor control method, device and system |
| CN113938071A (en) * | 2021-09-06 | 2022-01-14 | 上海新时达电气股份有限公司 | Space vector modulation method and device for driving single-phase motor by three-phase inverter |
| CN116865630A (en) * | 2023-08-09 | 2023-10-10 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162685A (en) * | 2020-01-17 | 2020-05-15 | 深圳市东力科创技术有限公司 | Control method and system of single-phase photovoltaic water pump inverter with BOOST boosting function |
| CN111162685B (en) * | 2020-01-17 | 2020-09-29 | 深圳市东力科创技术有限公司 | Control method and system of single-phase photovoltaic water pump inverter with BOOST boosting function |
| CN112260607A (en) * | 2020-11-03 | 2021-01-22 | 儒竞艾默生环境优化技术（上海）有限公司 | Motor driver, motor speed control method and control system |
| CN113938071A (en) * | 2021-09-06 | 2022-01-14 | 上海新时达电气股份有限公司 | Space vector modulation method and device for driving single-phase motor by three-phase inverter |
| CN113938071B (en) * | 2021-09-06 | 2023-12-19 | 上海新时达电气股份有限公司 | Space vector modulation method and device for driving single-phase motor by three-phase inverter |
| CN113783476A (en) * | 2021-09-16 | 2021-12-10 | 深圳市海浦蒙特科技有限公司 | Single-phase motor control method, device and system |
| CN113783476B (en) * | 2021-09-16 | 2024-04-05 | 深圳市海浦蒙特科技有限公司 | Single-phase motor control method, device and system |
| CN116865630A (en) * | 2023-08-09 | 2023-10-10 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
| CN116865630B (en) * | 2023-08-09 | 2023-12-08 | 东营市沃格艾迪石油技术有限公司 | Motor variable-frequency speed regulation control system |
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