CN109687803A - Motor speed regulating method and device - Google Patents
Motor speed regulating method and device Download PDFInfo
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- CN109687803A CN109687803A CN201910012814.XA CN201910012814A CN109687803A CN 109687803 A CN109687803 A CN 109687803A CN 201910012814 A CN201910012814 A CN 201910012814A CN 109687803 A CN109687803 A CN 109687803A
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- pwm
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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
- H02P25/022—Synchronous motors
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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
-
- 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
- H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of motor speed regulating method and devices.Wherein, this method comprises: determining that motor is in invariable power state, wherein the power of motor of invariable power state is invariable；The frequency of the pulse width modulation (PWM) device of motor main circuit is adjusted according to silicon carbide power device；The output voltage of motor main circuit is adjusted according to the frequency of PWM device；According to the output voltage of motor main circuit, the revolving speed of motor is adjusted.The present invention solves motor in the related technology, and under invariable power state, the speed of service, which is kept constant, is difficult to the technical issues of being promoted.
Description
Technical field
The present invention relates to Motor Control Fields, in particular to a kind of motor speed regulating method and device.
Background technique
Permanent magnet synchronous motor trailer system is the dynamical system of train, is made of current transformer and motor two large divisions, wherein
Current transformer is equivalent to the heart of train, and motor is equivalent to the muscle of train, and motor is mainly responsible for reception and registration power, completes electric energy to machine
Tool can change, and drive train smooth traveling.Permanent magnet synchronous motor and its system because its is small in size, it is energy saving the advantages that, become next
For the direction of Urban Rail Transit Development.But because of the rotor type magneto body of permanent magnet synchronous motor in the related technology, have higher
Back-emf, and the speed of service of the permanent magnet synchronous motor is kept constant constant, it is difficult to further mention under invariable power state
It is high.
For above-mentioned problem, currently no effective solution has been proposed.
Summary of the invention
The embodiment of the invention provides a kind of motor speed regulating method and device, at least solve in the related technology motor in perseverance
Under power rating, the speed of service, which is kept constant, is difficult to the technical issues of being promoted.
According to an aspect of an embodiment of the present invention, a kind of motor speed regulating method is provided, comprising: determine at the motor
In invariable power state, wherein the power of motor of the invariable power state is invariable；Motor is adjusted according to silicon carbide power device
The frequency of the pulse width modulation (PWM) device of major loop；The defeated of the motor main circuit is adjusted according to the frequency of the PWM device
Voltage out；According to the output voltage of the motor main circuit, the revolving speed of the motor is adjusted.
It optionally, include: according to the adjustment motor in the case where the motor is not at the invariable power state
Stator voltage adjusts the rotor frequency of motor；Motor speed is adjusted according to the rotor frequency of the motor.
Optionally, in the case where the motor is not at the invariable power state, the motor is in permanent torque state,
Wherein, the constant torque of the rotor of the permanent torque state is constant.
Optionally, it includes: true for the frequency of the PWM device of motor main circuit being adjusted according to the silicon carbide power device
In the case that the fixed motor needs to increase revolving speed, according to the switching frequency of the silicon carbide power device, increases motor master and return
The frequency of the PWM device on road.
It optionally, include: according to conducting according to the output voltage that the frequency of the PWM device adjusts the motor main circuit
All PWM devices of the motor main circuit, it is very big for making the phase voltage of the motor main circuit motor input
Value, wherein the PWM device is insulated gate bipolar transistor IGBT, and the PWM device is multiple；Based on the phase voltage
Maximum, increase the output voltage of motor main circuit.
Optionally, the maximum based on the phase voltage, the output voltage for increasing motor main circuit includes: by promoting institute
The frequency for stating PWM device improves the duty ratio of the phase voltage, increases the amplitude of the phase voltage, wherein the phase voltage is
Sinusoidal phase voltage；The output voltage of the motor main circuit is improved according to the amplitude for increasing the phase voltage.
Optionally, by promoting the frequency of the PWM device, the duty ratio of the phase voltage is improved, the phase electricity is increased
The amplitude of pressure includes: the frequency by promoting the PWM device, improves the duty ratio of the phase voltage；It is described just according to promotion
The duty ratio of string phase voltage reduces the length of the maximum value of the sinusoidal phase voltage and the loss section of minimum value, wherein described
The size of the voltage is kept constant in loss section；According to the length for reducing the loss section, increase the sinusoidal mutually electricity
The amplitude of pressure.
It optionally, include: to pass through increase according to the output voltage that the frequency of the PWM device adjusts the motor main circuit
The frequency of the PWM device increases the output voltage of the motor main circuit；According to the output voltage of the motor main circuit,
The revolving speed for adjusting the motor includes: to increase the revolving speed of the motor by the output voltage of the increase motor main circuit.
Optionally, the motor is permanent magnet synchronous motor.
According to another aspect of an embodiment of the present invention, a kind of motor speed control device is additionally provided, comprising: determining module is used
In determining that the motor is in invariable power state, wherein the power of motor of the invariable power state is invariable；The first adjustment mould
Block, the frequency of the pulse width modulation (PWM) device for adjusting motor main circuit according to silicon carbide power device；Second adjustment mould
Block, for adjusting the output voltage of the motor main circuit according to the frequency of the PWM device；Third adjusts module, is used for root
According to the output voltage of the motor main circuit, the revolving speed of the motor is adjusted.
According to another aspect of an embodiment of the present invention, a kind of storage medium is additionally provided, the storage medium includes storage
Program, wherein described program operation when control the storage medium where equipment execute it is any one of above-mentioned described in
Method.
According to another aspect of an embodiment of the present invention, a kind of processor is additionally provided, the processor is used to run program,
Wherein, described program run when execute it is any one of above-mentioned described in method.
In embodiments of the present invention, in the case where determining that the motor is in invariable power state, using according to silicon carbide power device
Part adjusts the frequency of the pulse width modulation (PWM) device of motor main circuit；The motor is adjusted according to the frequency of the PWM device
The output voltage of major loop；According to the output voltage of the motor main circuit, the mode of the revolving speed of the motor is adjusted, carbon is passed through
SiClx power device adjusts the output voltage of the major loop of motor, has reached the speed of service that motor is improved under invariable power state
Purpose, and then solve motor in the related technology under invariable power state, the speed of service keep constant the technology for being difficult to be promoted
Problem.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of motor speed regulating method according to an embodiment of the present invention；
Fig. 2 is the schematic diagram of the PWM device output waveform of embodiment according to the present invention；
Fig. 3 is the schematic diagram of the permanent magnet synchronous motor major loop of embodiment according to the present invention；
Fig. 4 is the signal of the stator voltage of the permanent magnet synchronous motor of embodiment and rotor frequency relationship according to the present invention
Figure；
Fig. 5 is a kind of schematic diagram of motor speed control device according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
According to embodiments of the present invention, a kind of embodiment of the method for motor speed regulating method is provided, it should be noted that attached
The step of process of figure illustrates can execute in a computer system such as a set of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, it can be to be different from shown by sequence execution herein
Or the step of description.
Fig. 1 is a kind of flow chart of motor speed regulating method according to an embodiment of the present invention, as shown in Figure 1, this method includes
Following steps:
Step S102 determines that motor is in invariable power state, wherein the power of motor of invariable power state is invariable；
Step S104 adjusts the frequency of the pulse width modulation (PWM) device of motor main circuit according to silicon carbide power device；
Step S106 adjusts the output voltage of motor main circuit according to the frequency of PWM device；
Step S108 adjusts the revolving speed of motor according to the output voltage of motor main circuit.
Through the above steps, in the case where determining that motor is in invariable power state, electricity is adjusted using according to silicon carbide power device
The frequency of the pulse width modulation (PWM) device in owner circuit；The output electricity of motor main circuit is adjusted according to the frequency of PWM device
Pressure；According to the output voltage of motor main circuit, the mode of the revolving speed of motor is adjusted, motor is adjusted by silicon carbide power device
The output voltage of major loop has achieved the purpose that the speed of service for improving motor under invariable power state, and then has solved correlation
For motor under invariable power state, the speed of service, which is kept constant, is difficult to the technical issues of being promoted in technology.
The invariable power state of above-mentioned motor refers to that under the invariable power state, the power invariability of motor is constant, not with voltage
Increase and increase, this is because motor main circuit due to hardware reason, makes the phase voltage of motor be unable to reach sufficiently high electricity
Pressure, for example, as shown in Fig. 2, since the frequency limited of PWM device is in hardware, being led in the case where phase voltage is sinusoidal phase voltage
The maximum value for sending a telegraph the sinusoidal phase voltage of machine is between times ti and ta (minimum value is between times t 3 and t 4) to keep constant
Constant value is unable to reach the theoretical maximum of the sinusoidal phase voltage.It is restricted so as to cause the speed of service of motor.
Above-mentioned motor can be permanent magnet synchronous motor, and the pulse width of motor main circuit is adjusted according to silicon carbide power device
The frequency of modulation (PWM) device, since silicon carbide power device has many advantages, such as high pressure resistant, switching frequency is high, can be same in permanent magnetism
In the case that step motor enters invariable power state, switching frequency can be improved, to improve duty ratio, improve above-mentioned permanent magnetism to reach
The three-phase input voltage of synchronous motor that is to say the output voltage for improving the major loop of permanent magnet synchronous motor, to keep permanent magnetism same
Step motor reaches the higher speed of service.Harmonic torque can also be reduced using silicon carbide power device, to make permanent-magnet synchronous
The rotor torque of motor is more stable, to keep the revolving speed of permanent magnet synchronous motor more stable.
The above-mentioned output voltage that motor main circuit is adjusted according to the frequency of PWM device, motor main circuit includes multiple PWM devices
Part, each phase voltage route of above-mentioned motor are respectively connected with two PWM devices in parallel, connect on the main line of three-phase voltage route
It is connected to PWM device.By adjusting the frequency of PWM device, change the duty ratio of above-mentioned phase voltage, to change the maximum of phase voltage
Value and minimum value, to change the output voltage of above-mentioned motor main circuit according to phase voltage.
It optionally, include: according to the stator voltage of adjustment motor, adjustment in the case where motor is not at invariable power state
The rotor frequency of motor；Motor speed is adjusted according to the rotor frequency of motor.
The state of above-mentioned motor may include invariable power state and permanent torque state, be less than in the stator voltage of motor specified
In the case where voltage, motor may be at permanent torque state, and in this state, the torque of the rotor of motor immobilizes, can be with
To the lasting power that rotor is kept constant, with the increase of stator voltage, the frequency of rotor is gradually increased, with stator voltage
Change directly proportional.Therefore, under permanent torque state, rotor frequency can be increased by increasing stator voltage, to improve motor
Revolving speed.
It should be noted that optional, in the case where motor is not at invariable power state, motor is in permanent torque shape
State, wherein the constant torque of the rotor of permanent torque state is constant.Increase with guaranteeing the steady change rate with constant voltage,
Constant lasting torque is generated to rotor, stable acceleration is provided for rotor, the stabilization of speed of rotor increases
It is long, motor speed also stable increase therewith.
Optionally, the frequency that the PWM device of motor main circuit is adjusted according to silicon carbide power device comprises determining that motor need
In the case where increasing revolving speed, according to the switching frequency of silicon carbide power device, increase the frequency of the PWM device of motor main circuit
Rate.
Above-mentioned hybrid silicon carbide power device has switching frequency more higher than general power device, can be PWM device
Part provides higher frequency.So as to improve the duty ratio of above-mentioned output voltage, so that above-mentioned output voltage is improved, to motor
It raises speed.
It optionally, include: to be returned according to electric conduction owner according to the output voltage that the frequency of PWM device adjusts motor main circuit
All PWM devices on road, the phase voltage for inputting motor main circuit motor is maximum, wherein PWM device is that insulated gate is double
Bipolar transistor IGBT, PWM device are multiple；Maximum based on phase voltage increases the output voltage of motor main circuit.
In the case where raising speed to motor, above-mentioned phase voltage is improved to maximum, then, according to the frequency for increasing PWM device
Rate, increases the duty ratio of above-mentioned output voltage, to change the maximum of above-mentioned phase voltage, above-mentioned output voltage is improved, to electricity
Machine raises speed.In the present embodiment, by all IGBT in conducting motor main circuit, the output of motor main circuit can be made
Voltage reaches the maximum under state at this time.Under the maximum, need to increase by other means the output of motor main circuit
Voltage.
Optionally, based on the maximum of phase voltage, the output voltage for increasing motor main circuit includes: by promoting PWM device
The frequency of part improves the duty ratio of phase voltage, increases the amplitude of phase voltage, wherein phase voltage is sinusoidal phase voltage；According to increase
The amplitude of phase voltage improves the output voltage of motor main circuit.
On the basis of the maximum of above-mentioned phase voltage, above-mentioned maximum is improved, so that increasing above-mentioned output voltage can be with
It is the frequency for promoting PWM device, the duty ratio of above-mentioned sinusoidal phase voltage can be made to increase, so as to increase sinusoidal phase voltage
Amplitude under the premise of phase is indeclinable, increase the amplitude of above-mentioned sinusoidal phase voltage in the frequency of sinusoidal phase voltage, namely
It is the maximum value of increase sinusoidal phase voltage, meanwhile, it can also reduce the minimum value of sinusoidal phase voltage.
Optionally, by promoting the frequency of PWM device, the duty ratio of phase voltage is improved, the amplitude for increasing phase voltage includes:
By promoting the frequency of PWM device, the duty ratio of phase voltage is improved；According to the duty ratio for promoting sinusoidal phase voltage, reduce sinusoidal
The length in the loss section of the maximum value of phase voltage, wherein the size of voltage is kept constant in loss section；It is lost according to reducing
The length in section increases the amplitude of sinusoidal phase voltage.
The above-mentioned duty ratio according to promotion sinusoidal phase voltage reduces the length in the loss section of the maximum value of sinusoidal phase voltage
Degree.Above-mentioned sinusoidal phase voltage further includes the loss section of minimum value, the loss in the loss section and above-mentioned maximum value of minimum value
The length in section is identical.For example, in Fig. 2, the interval range that the loss section of the maximum value of sinusoidal phase voltage is time t1 to t2,
The interval range that the loss section of minimum value is time t3 to t4, and the area of the interval range of time t1 to t2 and time t3 to t4
Between extent length it is identical, in the loss section, maximum value and/or minimum value are held in the loss area back lash potential and set place
Voltage value.The duty ratio for improving phase voltage can shorten the loss section of maximum value and minimum value, shorten the area of time t1 to t2
Between range (interval range of time t3 to t4), to make the maximum value of the sinusoidal phase voltage increase, to increase above-mentioned sine
The amplitude of phase voltage.
Optionally, according to the output voltage of motor main circuit, the revolving speed for adjusting motor includes: by increasing motor main circuit
Output voltage, increase the revolving speed of motor.
The output voltage of above-mentioned motor main circuit increases, and the input voltage of motor increases, and rotor speed increases, to be promoted
Motor speed.
Optionally, motor is permanent magnet synchronous motor.
Above-mentioned permanent magnet synchronous motor is applied to train traction system.
It should be noted that the present embodiment additionally provides a kind of preferred embodiment, below to the preferred embodiment into
Row is described in detail.
In the present embodiment, the advantages that permanent magnet synchronous motor and its system be because its is small in size, energy saving, becomes next-generation city
The direction of city's rail traffic development.Hybrid silicon carbide power device is because of the advantages that its is high pressure resistant, and switching frequency is high, and the next generation
The direction of Urban Rail Transit Development.Permanent magnet synchronous motor trailer system based on hybrid silicon carbide power device will play the two
The advantages of, reach green, environmental protection, energy-efficient effect.The rotor of permanent magnet synchronous motor is permanent magnet, has high back-emf, is
The speed of service for improving permanent magnet synchronous motor system is needed to permanent magnet synchronous electric when permanent magnet synchronous motor enters invariable power area
Machine carries out weak magnetic control, while guaranteeing high voltage output, guarantees the dynamic response of system.Hybrid silicon carbide power device has
Switching frequency can be improved when permanent magnet synchronous motor trailer system enters invariable power area in the high advantage of switching frequency, reduces harmonic wave
Torque.
The implementation of present embodiment is simple, and original PWM modulation mode, which is not required to do, to be changed.The exportable maximum of inverter
Voltage ensure that the weak magnetic of permanent magnet synchronous motor is realized, and the dynamic response in invariable power area.Realize magneto driving
Harmonic content of the system in high frequency is relatively low, and energy saving of system effect is obvious.
When permanent magnet synchronous motor operates in invariable power area, keep existing modulation algorithm constant, according to current operation
Frequency keeps PWM persistently open-minded near sinusoidal phase voltage, to improve output voltage, reaches weak magnetic and raising permanent magnetism is same
The purpose of the dynamic response of motor is walked, meanwhile, the PWM modulation mode in other regions is constant, ensure that the purpose for reducing harmonic wave.Figure
2 be the schematic diagram of the PWM device output waveform of embodiment according to the present invention, as shown in Fig. 2, improving the defeated of PWM modulation mode
Voltage waveform out forces insulated gate bipolar brilliant when the output voltage of inverter is between time t1 and t2 and t3 and t4
Body pipe IGBT is connected entirely, keeps the phase output voltage maximum, other regions do not have to change.Tetra- times of t1 and t2 and t3 and t4
Point is adjusted according to voltage output duty ratio.
Fig. 3 is the schematic diagram of the permanent magnet synchronous motor major loop of embodiment according to the present invention, as shown in figure 3, permanent magnetism is same
Each phase of step motor is all connected with two PWM devices in parallel, which is insulated gate bipolar transistor IGBT,
The symbol that the insulated gate bipolar transistor IGBT is made of BJT (double pole triode) and MOS (insulating gate type field effect tube)
Closing full control type voltage driving is power semiconductor.
Fig. 4 is the signal of the stator voltage of the permanent magnet synchronous motor of embodiment and rotor frequency relationship according to the present invention
Figure, shown in Fig. 4, after rotor frequency is greater than rated frequency, due to the limitation of inverter major loop and DC power supply, permanent-magnet synchronous
The voltage of motor stator has reached maximum value.In order to which permanent magnet motor system can operate in bigger speed, it is necessary to permanent-magnet synchronous
Motor carries out weak magnetic, and takes into account the dynamic response of permanent magnet synchronous motor and the requirement that harmonic wave is low.
Fig. 5 is a kind of schematic diagram of motor speed control device according to an embodiment of the present invention, as shown in figure 5, the electric machine speed regulation
Device, comprising: determining module 52, the first adjustment module 54, second adjustment module 56 and third adjust module 58, below to the dress
It sets and is described in detail.
Determining module 52, for determining that motor is in invariable power state, wherein the power of motor of invariable power state is constant not
Become；The first adjustment module 54 is connected with above-mentioned determining module 52, for adjusting motor main circuit according to silicon carbide power device
The frequency of pulse width modulation (PWM) device；Second adjustment module 56 is connected with above-mentioned the first adjustment module 54, for according to PWM
The output voltage of the frequency adjustment motor main circuit of device；Third adjusts module 58, is connected with above-mentioned second adjustment module 56, uses
In the output voltage according to motor main circuit, the revolving speed of motor is adjusted.
By above-mentioned apparatus, determine that motor is under invariable power state by determining module 52, using the first adjustment module 54
The frequency of the pulse width modulation (PWM) device of motor main circuit is adjusted according to silicon carbide power device；Second adjustment module 56
According to the output voltage of the frequency adjustment motor main circuit of PWM device；Third adjusts module 58 according to the output electricity of motor main circuit
Pressure, adjusts the mode of the revolving speed of motor, and the output voltage of the major loop of motor is adjusted by silicon carbide power device, has been reached
Under invariable power state improve motor the speed of service purpose, and then solve in the related technology motor under invariable power state,
The speed of service, which is kept constant, is difficult to the technical issues of being promoted.
According to another aspect of an embodiment of the present invention, a kind of storage medium is additionally provided, storage medium includes the journey of storage
Sequence, wherein equipment where control storage medium executes any one of above-mentioned method in program operation.
According to another aspect of an embodiment of the present invention, a kind of processor is additionally provided, processor is used to run program,
In, program executes any one of above-mentioned method when running.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (12)
1. a kind of motor speed regulating method characterized by comprising
Determine that the motor is in invariable power state, wherein the power of motor of the invariable power state is invariable；
The frequency of the pulse width modulation (PWM) device of motor main circuit is adjusted according to silicon carbide power device；
The output voltage of the motor main circuit is adjusted according to the frequency of the PWM device；
According to the output voltage of the motor main circuit, the revolving speed of the motor is adjusted.
2. the method according to claim 1, wherein the case where the motor is not at the invariable power state
Under include:
According to the stator voltage for adjusting the motor, the rotor frequency of motor is adjusted；
Motor speed is adjusted according to the rotor frequency of the motor.
3. according to the method described in claim 2, it is characterized in that, the case where the motor is not at the invariable power state
Under, the motor is in permanent torque state, wherein the constant torque of the rotor of the permanent torque state is constant.
4. the method according to claim 1, wherein adjusting motor main circuit according to the silicon carbide power device
The frequency of the PWM device include:
In the case where determining that the motor needs to increase revolving speed, according to the switching frequency of the silicon carbide power device, increase electricity
The frequency of the PWM device in owner circuit.
5. the method according to claim 1, wherein adjusting the motor master according to the frequency of the PWM device
The output voltage in circuit includes:
According to all PWM devices that the motor main circuit is connected, make the motor main circuit motor input
Phase voltage is maximum, wherein the PWM device is insulated gate bipolar transistor IGBT, and the PWM device is multiple；
Based on the maximum of the phase voltage, increase the output voltage of motor main circuit.
6. according to the method described in claim 5, it is characterized in that, the maximum based on the phase voltage, increases motor master and returns
The output voltage on road includes:
By the frequency of the promotion PWM device, the duty ratio of the phase voltage is improved, the amplitude of the phase voltage is increased,
In, the phase voltage is sinusoidal phase voltage；
The output voltage of the motor main circuit is improved according to the amplitude for increasing the phase voltage.
7. according to the method described in claim 6, it is characterized in that, frequency by promoting the PWM device, improves the phase
The duty ratio of voltage, the amplitude for increasing the phase voltage include:
By promoting the frequency of the PWM device, the duty ratio of the phase voltage is improved；
According to the duty ratio for promoting the sinusoidal phase voltage, reduce the maximum value of the sinusoidal phase voltage and the loss area of minimum value
Between length, wherein the size of the voltage is kept constant in the loss section；
According to the length for reducing the loss section, increase the amplitude of the sinusoidal phase voltage.
8. the method according to claim 1, wherein
It include: by increasing the PWM device according to the output voltage that the frequency of the PWM device adjusts the motor main circuit
Frequency, increase the output voltage of the motor main circuit；
According to the output voltage of the motor main circuit, the revolving speed for adjusting the motor includes: to be returned by increasing the motor master
The output voltage on road increases the revolving speed of the motor.
9. method as claimed in any of claims 1 to 8, which is characterized in that the motor is permanent magnet synchronous motor.
10. a kind of motor speed control device characterized by comprising
Determining module, for determining that the motor is in invariable power state, wherein the power of motor of the invariable power state is constant
It is constant；
The first adjustment module, for adjusting the pulse width modulation (PWM) device of motor main circuit according to silicon carbide power device
Frequency；
Second adjustment module, for adjusting the output voltage of the motor main circuit according to the frequency of the PWM device；
Third adjusts module and adjusts the revolving speed of the motor for the output voltage according to the motor main circuit.
11. a kind of storage medium, which is characterized in that the storage medium includes the program of storage, wherein run in described program
When control the storage medium where equipment perform claim require any one of 1 to 9 described in method.
12. a kind of processor, which is characterized in that the processor is for running program, wherein right of execution when described program is run
Benefit require any one of 1 to 9 described in method.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616144A (en) * | 2012-04-25 | 2012-08-01 | 电子科技大学 | Method and device for controlling safe operation of electric automobile |
| CN103312095A (en) * | 2012-03-14 | 2013-09-18 | 株式会社安川电机 | Motor driving device and vehicle |
| US20160065063A1 (en) * | 2014-08-28 | 2016-03-03 | Deere & Company | Methods of generating output variable voltage and systems thereof |
| CN107070353A (en) * | 2017-03-21 | 2017-08-18 | 杭州阔博科技有限公司 | A kind of drive control device applied to high-speed electric expreess locomotive |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103312095A (en) * | 2012-03-14 | 2013-09-18 | 株式会社安川电机 | Motor driving device and vehicle |
| CN102616144A (en) * | 2012-04-25 | 2012-08-01 | 电子科技大学 | Method and device for controlling safe operation of electric automobile |
| US20160065063A1 (en) * | 2014-08-28 | 2016-03-03 | Deere & Company | Methods of generating output variable voltage and systems thereof |
| CN107070353A (en) * | 2017-03-21 | 2017-08-18 | 杭州阔博科技有限公司 | A kind of drive control device applied to high-speed electric expreess locomotive |
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