CN108933554A - A kind of electric machine controller and electric machine controller become carrier frequency control method - Google Patents
A kind of electric machine controller and electric machine controller become carrier frequency control method Download PDFInfo
- Publication number
- CN108933554A CN108933554A CN201710370325.2A CN201710370325A CN108933554A CN 108933554 A CN108933554 A CN 108933554A CN 201710370325 A CN201710370325 A CN 201710370325A CN 108933554 A CN108933554 A CN 108933554A
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- Prior art keywords
- carrier frequency
- electric machine
- machine controller
- setting
- frequency
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Classifications
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/04—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation specially adapted for very low speeds
-
- 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
- H02P27/08—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 with pulse width modulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The present invention provides a kind of electric machine controllers and electric machine controller to become carrier frequency control method, electric machine controller carrier frequency is adjusted by detection motor speed, the height of carrier frequency can be adjusted according to different rotating speeds, so as to adjust opening and shutdown frequency for power device of inverter, solve the problems, such as that the frequency opened with turned off because of power device of inverter is constantly in higher state and causes switch inherent loss big, the efficiency of electric system is improved, power consumption is reduced.
Description
Technical field
The present invention relates to Motor Control Fields, and in particular to a kind of electric machine controller and electric machine controller variable load frequency controlling party
Method.
Background technique
(PWM) carrier frequency of electric machine controller decides opening and turning off for the device for power switching (IGBT) of inverter
Number, and at present vehicle motor controller all use dead load frequency control, no matter that is, what stage is vehicle speed be in, work as vehicle
Torque command is sent, after electric machine controller receives vehicle order, in motor from 0 revolving speed to maximum speed, controller
Carrier frequency is invariable, and the on-off times of device for power switching (IGBT) are constantly in very high frequency.Device for power switching
(IGBT) on and off generates inherent loss, and on-off times are more, is lost bigger.If being directly changed carrier frequency, will lead to
Motor carrier wave ratio is in undesirable state, so that motor control performance declines, occurs shaking or situations such as noise.It is using
It is usually higher to the requirement of performance when motor, such as requirement of the electric car to wheel motor performance be just very high, therefore just needs
A method of electric machine controller carrier frequency is adjusted according to motor speed, the switch of IGBT can be effectively reduced in this way
Number, can effectively promote the efficiency of electric machine controller, while enhancing the stability of motor control, improve motor control performance.
Summary of the invention
The present invention provides a kind of electric machine controllers and electric machine controller to become carrier frequency control method, to solve the prior art
Middle electric machine controller dead load frequency operation is constantly in higher state with the frequency of shutdown so that inverter power switching device is opened
And cause to switch the higher problem of inherent loss.
In order to solve the above technical problems, the technical solution adopted by the present invention is that：A kind of electric machine controller variable load frequency controlling party
Method, the method step are：
(1) motor speed is detected, is compared with motor setting base speed；
(2) if motor speed is less than setting base speed, carrier frequency is reduced.
Further, step (2) further includes：If motor speed increases carrier frequency not less than setting base speed.
Further, a carrier frequency variation coefficient a and carrier frequency initial value f are set, reduction is determined by a*f
Rear carrier frequency and as new carrier frequency, 0<a<1.
Further, the carrier frequency after increasing is determined by (a+1) * f and as new carrier frequency, 0<a<1.
Further, upper and lower bound is set for the variation of carrier frequency, if the new carrier frequency is in described
It sets between upper and lower bound, then the new carrier frequency is exactly the carrier frequency after final adjustment；If the new load
For wave frequency rate no more than setting lower limit, then setting lower limit is exactly the carrier frequency after final adjustment；If the new carrier frequency
Not less than the setting upper limit, then setting the upper limit is exactly the carrier frequency after final adjustment.
It is a further object to provide a kind of electric machine controllers, including variable load audio-frequency control device, inverter and electricity
Tachometer, device for detecting motor rotary speed detect motor speed, variable load audio-frequency control device by the motor speed and electricity
Machine sets base speed ratio compared with if motor speed is less than setting base speed, variable load audio-frequency control device reduces carrier frequency.
Further, if motor speed is not less than setting base speed, variable load audio-frequency control device increases carrier frequency.
Further, a carrier frequency variation coefficient a and carrier frequency initial value f is arranged in variable load audio-frequency control device, leads to
A*f is crossed to determine the carrier frequency after reducing and as new carrier frequency, 0<a<1.
Further, variable load audio-frequency control device is determined the carrier frequency after increasing by (a+1) * f and as new load
Wave frequency rate, 0<a<1.
Further, variable load audio-frequency control device is that the variation of carrier frequency sets upper and lower bound, if the new load
Wave frequency rate is between the setting upper and lower bound, then the new carrier frequency is exactly the carrier frequency after final adjustment；
If the new carrier frequency is no more than setting lower limit, setting lower limit is exactly the carrier frequency after final adjustment；If institute
New carrier frequency is stated not less than the setting upper limit, then setting the upper limit is exactly the carrier frequency after final adjustment.
The beneficial effects of the invention are as follows by detection motor speed adjust electric machine controller carrier frequency, motor speed compared with
When low, carrier frequency is reduced, to reduce switching frequency, solves the frequency one opened with shutdown because of power device of inverter
It is straight to cause to switch the big problem of inherent loss in higher state, the efficiency of electric system is improved, power consumption is reduced.Simultaneously because
Frequency of modulated wave can also decline when motor speed reduces, therefore reduction carrier frequency will not make a big impact to carrier wave ratio, thus
Motor control performance will not be influenced.
In addition when motor speed is higher, frequency of modulated wave increases, and modulation wave frequency can be reduced by increasing carrier frequency at this time
Rate increases the influence that reduces to carrier wave ratio, avoids motor from occurring shaking and noise, raising motor control performance.
Detailed description of the invention
Fig. 1 is the flow chart that of the invention a kind of electric machine controller and electric machine controller become carrier frequency control method embodiment 1；
Fig. 2 is the flow chart that of the invention a kind of electric machine controller and electric machine controller become carrier frequency control method embodiment 2；
Fig. 3 is that of the invention a kind of electric machine controller and electric machine controller become carrier frequency control method and apply in wheel motor control
Schematic diagram in system.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
Embodiment 1.
The present invention provides a kind of electric machine controllers and electric machine controller to become carrier frequency control method, as shown in Figure 1, initialization
It is 5KHZ that the carrier frequency of electric machine controller, which obtains a carrier frequency initial value, provides the setting base speed of motor as carrier frequency
Value is defined in rate adjustment, and carrier frequency variation coefficient a, and 0 is arranged<a<1, motor speed is detected, electric machine controller will test
As a result it is compared with setting base speed, it is if the carrier frequency that the testing result is fast less than setting base, new, i.e. defeated in Fig. 1
Carrier frequency 1 is equal to carrier frequency initial value and is multiplied with carrier frequency variation coefficient a out, to reduce carrier frequency, reduces inverse
The on-off times for becoming device device for power switching, reduce switch inherent loss.
Embodiment 2.
As shown in Fig. 2, it is 5KHZ that the carrier frequency of initialization electric machine controller, which obtains a carrier frequency initial value, provide
The setting base speed of motor defines value as what carrier frequency adjusted, and carrier frequency variation coefficient a, and 0 is arranged<a<1.Detection electricity
Machine revolving speed, electric machine controller will test result and be compared with setting base speed, if the testing result is less than setting base speed,
The output carrier frequency 1 is equal to carrier frequency initial value and is multiplied with a, to reduce carrier frequency, reduces inverter power and opens
The on-off times for closing device, reduce switch inherent loss.If the testing result is not less than setting base speed, the output
Carrier frequency 1 is equal to carrier frequency initial value and is multiplied with (a+1), to increase carrier frequency, reduces frequency of modulated wave and increases to load
The influence that Bobbi reduces avoids motor from occurring shaking and noise, improves motor control performance.It can be led in view of carrier frequency is too low
Cause to vibrate when electric motor starting excessive, and carrier frequency crosses conference and exceeds the range that can bear of device for power switching, therefore to electricity
The variation of machine controller carrier frequency sets upper limit value 8KHZ and lower limit value 3KHZ, will be in output carrier frequency 1 and carrier frequency variation
Limit and lower limit are compared, if the output carrier frequency 1 is between the setting upper and lower bound, the output carrier frequency 1
It is exactly the carrier frequency after final adjustment, i.e. output carrier frequency 2 is equal to output carrier frequency 1 in Fig. 1；If the output carrier frequency 1 is less
In setting lower limit 3KHZ, then the output carrier frequency 2 is equal to lower limit 3KHZ；If the output carrier frequency 1 is not less than the setting upper limit
8KHZ, then the output carrier frequency 2 is equal to setting upper limit 8KHZ.
Fig. 3 is the schematic diagram that the present invention is applied to wheel motor control.Motor receives the given torque T of vehicle, passes through
The tables of data for looking into motor calibration, parses the given value of Id, Iq.The three-phase current that motor feedback comes becomes through Clark and park
Change obtains the value of feedback of Id, Iq, and value of feedback combination Id, Iq given value is converted to Ud, Uq, so through overcurrent pi regulator
The adjustment of PWM carrier frequency is carried out in conjunction with the motor speed that motor feedback comes by Frequency conversion control SVPWM method afterwards, is calculated
Carrier frequency under different rotating speeds out, control inverter power switching device (IGBT) switch, exports three-phase current driving motor.
Specific embodiment of the present invention is presented above, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are modified, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is to be finely adjusted to be formed to above-described embodiment, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (10)
1. a kind of electric machine controller becomes carrier frequency control method, it is characterised in that：Include the following steps：
(1) motor speed is detected, is compared with motor setting base speed；
(2) if motor speed is less than setting base speed, carrier frequency is reduced.
2. a kind of electric machine controller becomes carrier frequency control method according to claim 1, which is characterized in that step (2) further includes：
If motor speed increases carrier frequency not less than setting base speed.
3. a kind of electric machine controller becomes carrier frequency control method according to claim 2, it is characterised in that：One carrier frequency is set
Rate variation coefficient a and carrier frequency initial value f, the carrier frequency after reducing is determined by a*f and as new carrier frequency,
0<a<1。
4. a kind of electric machine controller becomes carrier frequency control method according to claim 3, it is characterised in that：By (a+1) * f come
Determine the carrier frequency after increasing and as new carrier frequency.
5. according to a kind of electric machine controller change carrier frequency control method of claim 3 or 4, it is characterised in that：For carrier frequency
Variation set upper and lower bound, if the new carrier frequency be between the setting upper and lower bound, it is described newly
Carrier frequency be exactly carrier frequency after final adjustment；If the new carrier frequency is set no more than setting lower limit
Lower limit is exactly the carrier frequency after final adjustment；If the new carrier frequency sets the upper limit just not less than the setting upper limit
It is the carrier frequency after final adjustment.
6. a kind of electric machine controller, it is characterised in that：Including variable load audio-frequency control device, inverter and device for detecting motor rotary speed,
Device for detecting motor rotary speed detect motor speed, variable load audio-frequency control device by the motor speed and motor setting base speed ratio compared with,
If motor speed is less than setting base speed, variable load audio-frequency control device reduces carrier frequency.
7. a kind of electric machine controller according to claim 6, it is characterised in that：If motor speed is fast not less than setting base,
Variable load audio-frequency control device increases carrier frequency.
8. a kind of electric machine controller according to claim 7, it is characterised in that：A carrier frequency is arranged in variable load audio-frequency control device
Rate variation coefficient a and carrier frequency initial value f, the carrier frequency after reducing is determined by a*f and as new carrier frequency,
0<a<1。
9. a kind of electric machine controller according to claim 8, it is characterised in that：Variable load audio-frequency control device by (a+1) * f come
Determine the carrier frequency after increasing and as new carrier frequency.
10. a kind of electric machine controller according to claim 8 or claim 9, it is characterised in that：Variable load audio-frequency control device is carrier frequency
Variation set upper and lower bound, if the new carrier frequency be between the setting upper and lower bound, it is described newly
Carrier frequency be exactly carrier frequency after final adjustment；If the new carrier frequency is set no more than setting lower limit
Lower limit is exactly the carrier frequency after final adjustment；If the new carrier frequency sets the upper limit just not less than the setting upper limit
It is the carrier frequency after final adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370325.2A CN108933554A (en) | 2017-05-23 | 2017-05-23 | A kind of electric machine controller and electric machine controller become carrier frequency control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370325.2A CN108933554A (en) | 2017-05-23 | 2017-05-23 | A kind of electric machine controller and electric machine controller become carrier frequency control method |
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| CN108933554A true CN108933554A (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710370325.2A Pending CN108933554A (en) | 2017-05-23 | 2017-05-23 | A kind of electric machine controller and electric machine controller become carrier frequency control method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409470A (en) * | 2020-04-08 | 2020-07-14 | 北京罗克维尔斯科技有限公司 | IGBT carrier frequency control method and device and electric automobile |
| CN111416565A (en) * | 2020-03-27 | 2020-07-14 | 四川长虹精密电子科技有限公司 | Motor control device and method with variable carrier frequency |
| CN112350637A (en) * | 2020-09-17 | 2021-02-09 | 珠海格力电器股份有限公司 | Motor noise control method, computer readable storage medium and motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966827A (en) * | 2005-11-17 | 2007-05-23 | Lg电子株式会社 | A device and a method for driving the motor of a washing machine |
| CN101316078A (en) * | 2007-05-31 | 2008-12-03 | 通用汽车环球科技运作公司 | Method and system for operating a motor to reduce noise in an electric vehicle |
| CN105071641A (en) * | 2015-08-14 | 2015-11-18 | 东南大学 | Method for controlling dynamic response of switch power |
| CN106330045A (en) * | 2016-10-25 | 2017-01-11 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor control system and permanent magnet synchronous motor control method |
-
2017
- 2017-05-23 CN CN201710370325.2A patent/CN108933554A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966827A (en) * | 2005-11-17 | 2007-05-23 | Lg电子株式会社 | A device and a method for driving the motor of a washing machine |
| CN101316078A (en) * | 2007-05-31 | 2008-12-03 | 通用汽车环球科技运作公司 | Method and system for operating a motor to reduce noise in an electric vehicle |
| CN105071641A (en) * | 2015-08-14 | 2015-11-18 | 东南大学 | Method for controlling dynamic response of switch power |
| CN106330045A (en) * | 2016-10-25 | 2017-01-11 | 北京新能源汽车股份有限公司 | Permanent magnet synchronous motor control system and permanent magnet synchronous motor control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111416565A (en) * | 2020-03-27 | 2020-07-14 | 四川长虹精密电子科技有限公司 | Motor control device and method with variable carrier frequency |
| CN111409470A (en) * | 2020-04-08 | 2020-07-14 | 北京罗克维尔斯科技有限公司 | IGBT carrier frequency control method and device and electric automobile |
| CN112350637A (en) * | 2020-09-17 | 2021-02-09 | 珠海格力电器股份有限公司 | Motor noise control method, computer readable storage medium and motor |
| CN112350637B (en) * | 2020-09-17 | 2022-07-12 | 珠海格力电器股份有限公司 | Motor noise control method, computer readable storage medium and motor |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181204 |
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| RJ01 | Rejection of invention patent application after publication |