CN110441589A - A kind of sampling of inverter current in line justification and bearing calibration - Google Patents
A kind of sampling of inverter current in line justification and bearing calibration Download PDFInfo
- Publication number
- CN110441589A CN110441589A CN201910682117.5A CN201910682117A CN110441589A CN 110441589 A CN110441589 A CN 110441589A CN 201910682117 A CN201910682117 A CN 201910682117A CN 110441589 A CN110441589 A CN 110441589A
- Authority
- CN
- China
- Prior art keywords
- current
- phase
- sample
- follows
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/04—Arrangements or methods for the control of AC motors characterised by a control method other than vector control specially adapted for damping motor oscillations, e.g. for reducing hunting
-
- 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
- H02P2205/00—Indexing scheme relating to controlling arrangements characterised by the control loops
- H02P2205/01—Current loop, i.e. comparison of the motor current with a current reference
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of samplings of inverter current in line justification and bearing calibration, comprising the following steps: step A: applying voltage in turn respectively to motor U, V, W three-phase and obtains the current sampling data of corresponding voltage;Step B: the AD error of different current sample phases is calculated;Step C: the AD linearity correction amount of different current sample phases is calculated;Step D: the value after calculating AD correction.The present invention uses three kinds of cyclical voltage applying modes, according to obtained current sampling data, can short circuit to three-phase current sampling circuit and open circuit judge, bearing calibration through the invention is to three-phase current sampled value, the precision of current sample is improved, thus electromagnetic noise and harmonic component when achieving the effect that reduce motor operation.
Description
Technical field
The invention belongs to converter technology fields, and in particular to a kind of sampling of inverter current in line justification and correction side
Method.
Background technique
Due to the sampling of frequency converter three-phase current and conversion hardware circuit are inconsistent, so that the electric current that software obtains is adopted
Sample digital quantity and actual current value have certain deviation, and with fluctuation up and down.The deviation and fluctuation of current sample, can lead
The aggravation of electromagnetic noise and harmonic component, can also cause torque pulsation when cause motor operation when serious, so that motor performance reduces.
Summary of the invention
The technical problem to be solved by the present invention is to solve the above shortcomings of the prior art and to provide a kind of inverter currents to adopt
Sample in line justification and bearing calibration.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows: a kind of sampling of inverter current it is online really
Recognize and bearing calibration, the described method comprises the following steps:
Step A: apply voltage in turn respectively to motor U, V, W three-phase and obtain the current sampling data of corresponding voltage;
Step B: the AD error of different current sample phases is calculated;
Step C: according to the AD error of different current sample casees, the AD linearity correction amount of different current sample phases is calculated;
Step D: the value after calculating AD correction.
To optimize above-mentioned technical proposal, the concrete measure taken further include:
Above-mentioned step A is specific as follows:
A1: apply voltage { U respectively to motor U, V, W, three-phasea、Ub、Ux, corresponding current sampled value is calculated
{AD_ia[0]、AD_ib[0]、AD_ix[0]}
A2: apply voltage { U respectively to motor V, W, U three-phasea、Ub、Ux, corresponding current sampled value is calculated:
A3: apply voltage { U respectively to motor W, U, V three-phasea、Ub、Ux, corresponding current sampled value is calculated:
Wherein: { AD_ia[n] } indicate voltage UaUnder current sampling data, { AD_ib[n] } indicate voltage UbUnder electric current adopt
Sample value, { n=0,1,2 }, Zu、Zv、ZwIt is U, V, W input impedances, C respectivelyu、Cv、CwU, V, W three-phase electricity flow valuve respectively with
The proportionality coefficient of its AD sampled value.
Above-mentioned step B is specific as follows:
B1: the average value of different electric current AD samplings is calculated:
B2: the AD error of different current sample phases is calculated:
For the channel U phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively
(AD_ia-AD_ia[0])、(AD_ib-AD_ib[2])。
For the channel V phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively
(AD_ia-AD_ia[1])、(AD_ib-AD_ib[0])。
For the channel W phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively
(AD_ia-AD_ia[2])、(AD_ib-AD_ib[1])。
Above-mentioned step C is specific as follows:
For the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, correcting value calculates as follows:
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, correcting value calculates as follows:
For the channel W phase AD of current sample, sample to obtain digital quantity AD_W in AD0When, correcting value calculates as follows:
Above-mentioned step D is specific as follows:
For the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, the value after correcting value calculates
It is as follows:
AD_U=AD_U0+AD_ΔU (8)
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, the value after correcting value calculates
It is as follows:
AD_V=AD_V0+ AD_ Δ V (9) samples to obtain digital quantity AD_ in AD for the channel W phase AD of current sample
W0When, the value after correcting value calculates as follows:
AD_W=AD_W0+AD_ΔW (10)
Above-mentioned motor is asynchronous machine or permanent magnet synchronous motor.
Beneficial effects of the present invention:
1, the present invention uses three kinds of cyclical voltage applying modes, according to obtained AD_ia[0]、AD_ib[0]、AD_ia[1]、
AD_ib[1]、AD_ia[2]、AD_ib[2] current sampling data, can short circuit to three-phase current sampling circuit and open circuit sentence
It is disconnected.
2, bearing calibration through the invention improves the precision of current sample to three-phase current sampled value, to reach
The effect of electromagnetic noise and harmonic component when reducing motor operation.
Detailed description of the invention
Scheme the flow diagram first is that of the invention;
Scheme the system block diagram second is that current sampling circuit;
Figure is third is that the schematic illustration that current sample AD is corrected;
Figure is not fourth is that use the current sampling data schematic diagram of current sample bearing calibration according to the present invention;
Figure is fifth is that use the current sampling data schematic diagram of current sample bearing calibration according to the present invention;
Figure is not sixth is that use the electromagnetic noise schematic diagram of current sample bearing calibration according to the present invention;
Figure is seventh is that use the electromagnetic noise schematic diagram of current sample bearing calibration according to the present invention;
Figure is not eighth is that use the current waveform schematic diagram of current sample bearing calibration according to the present invention;
Figure is ninth is that use the current waveform schematic diagram of current sample bearing calibration according to the present invention.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, the present invention is a kind of sampling of inverter current in line justification and bearing calibration, including following step
It is rapid:
Step A: apply voltage in turn respectively to motor U, V, W three-phase and obtain the current sampling data of corresponding voltage;
A1: apply voltage { U respectively to motor U, V, W, three-phasea、Ub、Ux, corresponding current sampled value { AD_i is calculateda
[0]、AD_ib[0]、AD_ix[0]}
A2: apply voltage { U respectively to motor V, W, U three-phasea、Ub、Ux, corresponding current sampled value is calculated:
A3: apply voltage { U respectively to motor W, U, V three-phasea、Ub、Ux, corresponding current sampled value is calculated:
Wherein: AD_ia[n] indicates voltage UaUnder current sampling data, AD_ib[n] indicates voltage UbUnder current sample
Value, { n=0,1,2 }, Zu、Zv、ZwIt is U, V, W input impedances, C respectivelyu、Cv、CwIt is U, V, W three-phase electricity flow valuve and its respectively
The proportionality coefficient of AD sampled value.
According to application according to application voltage { Ua、Ub、UxAnd AD sampling linearity correction needs, only take { Ua、UbCorresponding
The electric current AD_i of generationa[n]、AD_ib[n], UxThe corresponding electric current AD_i generatedx[n] is not dealt with.
Step B: the AD error of different current sample phases is calculated;
B1: the average value of different electric current AD samplings is calculated:
B2: the AD error of different current sample phases is calculated:
For the channel U phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia
[0])、(AD_ib-AD_ib[2])。
For the channel V phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia
[1])、(AD_ib-AD_ib[0])。
For the channel W phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia
[2])、(AD_ib-AD_ib[1])。
Step C: according to the AD error of different current sample casees, the AD linearity correction amount of different current sample phases is calculated;It is right
In the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, correcting value calculates as follows:
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, correcting value calculates as follows:
For the channel W phase AD of current sample, sample to obtain digital quantity AD_W in AD0When, correcting value calculates as follows:
Wherein: (AD_ib-AD_ib[2])、(AD_ib-AD_ib[0])、(AD_ib-AD_ibIt [1]) is respectively zero shift rectifying
Value,
Point
It Biao Shi not linearity correction value.
Step D: the value after calculating AD correction;
For the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, the value after correcting value calculates
It is as follows:
AD_U=AD_U0+AD_ΔU (8)
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, the value after correcting value calculates
It is as follows:
AD_V=AD_V0+ AD_ Δ V (9) samples to obtain digital quantity AD_ in AD for the channel W phase AD of current sample
W0When, the value after correcting value calculates as follows:
AD_W=AD_W0+AD_ΔW (10)
It is as shown in Figure 2 the system block diagram of current sampling circuit.In the electricity of six road the PWM output circuits and the right on the left side
Between machine U, V, W three-phase, resistance R is sealed in respectivelyu、Rv、Rw, conducting and the pass of six road IGBT switching tubes are controlled by PWM algorithm
It is disconnected, the inverter circuit of control motor is constituted, realizes the output of different voltages;The current sense being correspondingly connected with by each resistance
Device detects its corresponding current value, is exported in the form of voltage magnitude;Then, voltage needed for being adjusted by current modulating circuit
Amplitude and range;Finally, reading the current value indicated with voltage by the A D interface of DSP with software mode.
It is as shown in Figure 3 the schematic illustration of current sample AD correction, AD_U0It is current sampling data, in addition the AD of U phase
Corrected value, the numerical value after finally obtaining correction, adjusts drift and the linearity by correction number.
Such as figure four and figure five show the current sampling data schematic diagram whether respectively obtained using the bearing calibration, You Tuke
Know, bearing calibration through the invention further increases the precision of current sample.
Such as figure six and figure seven show the electromagnetic noise schematic diagram and figure eight whether respectively obtained using the bearing calibration
It is shown the current waveform schematic diagram whether respectively obtained using the bearing calibration with figure nine, above-mentioned four width figure is disclosed by three
Electromagnetic noise and harmonic component after phase current sampling value carries out the bearing calibration, when reducing motor operation.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (6)
1. a kind of sampling of inverter current in line justification and bearing calibration, it is characterised in that: the described method comprises the following steps:
Step A: apply voltage in turn respectively to motor U, V, W three-phase and obtain the current sampling data of corresponding voltage;
Step B: the AD error of different current sample phases is calculated;
Step C: the AD linearity correction amount of different current sample phases is calculated;
Step D: the value after calculating AD correction.
2. a kind of inverter current sampling according to claim 1 in line justification and bearing calibration, it is characterised in that: institute
It is specific as follows to state step A:
A1: apply voltage { U respectively to motor U, V, W, three-phasea、Ub、Ux, corresponding current sampled value is calculated
{AD_ia[0]、AD_ib[0]、AD_ix[0]}
A2: apply voltage { U respectively to motor V, W, U three-phasea、Ub、Ux, corresponding current sampled value is calculated:
A3: apply voltage { U respectively to motor W, U, V three-phasea、Ub、Ux, corresponding current sampled value is calculated:
Wherein: { AD_ia[n] } indicate voltage UaUnder current sampling data, { AD_ib[n] } indicate voltage UbUnder current sampling data,
{ n=0,1,2 }, Zu、Zv、ZwIt is U, V, W input impedances, C respectivelyu、Cv、CwIt is U, V, W three-phase electricity flow valuve and its AD respectively
The proportionality coefficient of sampled value.
3. a kind of inverter current sampling according to claim 2 in line justification and bearing calibration, it is characterised in that: institute
It is specific as follows to state step B:
B1: the average value of different electric current AD samplings is calculated:
B2: the AD error of different current sample phases is calculated:
For the channel U phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia[0])、
(AD_ib-AD_ib[2])。
For the channel V phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia[1])、
(AD_ib-AD_ib[0])。
For the channel W phase AD of current sample, in voltage Ua、UbUnder effect, sampling deviation is respectively (AD_ia-AD_ia[2])、
(AD_ib-AD_ib[1])。
4. a kind of inverter current sampling according to claim 3 in line justification and bearing calibration, it is characterised in that: institute
It is specific as follows to state step C:
For the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, correcting value calculates as follows:
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, correcting value calculates as follows:
For the channel W phase AD of current sample, sample to obtain digital quantity AD_W in AD0When, correcting value calculates as follows:
5. a kind of inverter current sampling according to claim 4 in line justification and bearing calibration, it is characterised in that: institute
It is specific as follows to state step D:
For the channel U phase AD of current sample, sample to obtain digital quantity AD_U in AD0When, the value after correcting value calculates as follows:
AD_U=AD_U0+AD_ΔU (8)
For the channel V phase AD of current sample, sample to obtain digital quantity AD_V in AD0When, the value after correcting value calculates as follows:
AD_V=AD_V0+AD_ΔV (9)
For the channel W phase AD of current sample, sample to obtain digital quantity AD_W in AD0When, the value after correcting value calculates as follows:
AD_W=AD_W0+AD_ΔW (10)。
6. a kind of inverter current sampling according to claim 1 in line justification and bearing calibration, it is characterised in that: institute
Stating motor is asynchronous machine or permanent magnet synchronous motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910682117.5A CN110441589B (en) | 2019-07-26 | 2019-07-26 | Online confirming and correcting method for current sampling of frequency converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910682117.5A CN110441589B (en) | 2019-07-26 | 2019-07-26 | Online confirming and correcting method for current sampling of frequency converter |
Publications (2)
Publication Number | Publication Date |
---|---|
CN110441589A true CN110441589A (en) | 2019-11-12 |
CN110441589B CN110441589B (en) | 2022-06-07 |
Family
ID=68431723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910682117.5A Active CN110441589B (en) | 2019-07-26 | 2019-07-26 | Online confirming and correcting method for current sampling of frequency converter |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110441589B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112653368A (en) * | 2020-12-14 | 2021-04-13 | 大力电工襄阳股份有限公司 | Method and system for inhibiting V/F speed regulation light-load oscillation of asynchronous motor |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5858893A (en) * | 1981-09-30 | 1983-04-07 | Hitachi Ltd | Controller for chopper |
CN1474192A (en) * | 2002-08-19 | 2004-02-11 | 乐金电子(天津)电器有限公司 | Detecting method for motor phase current |
JP2005244771A (en) * | 2004-02-27 | 2005-09-08 | Fuji Electric Holdings Co Ltd | A/d conversion circuit, current measurement circuit, charging/discharging amount measurement circuit, and error correction method |
CN102023251A (en) * | 2009-09-17 | 2011-04-20 | 日立空调·家用电器株式会社 | Current detecting method, inverter device and convertor device using the same |
CN102208913A (en) * | 2010-03-31 | 2011-10-05 | 本田技研工业株式会社 | AD conversion circuit and error correcting method |
CN102253353A (en) * | 2011-04-19 | 2011-11-23 | 河北省电力研究院 | Method and device for automatically calibrating micro-ammeters |
CN102353918A (en) * | 2011-06-22 | 2012-02-15 | 德讯科技股份有限公司 | Automatic calibration system for current-voltage analog quantity collector |
CN102545735A (en) * | 2010-12-20 | 2012-07-04 | 上海大郡动力控制技术有限公司 | Method for processing current static deviation of permanent magnet motor |
CN102590782A (en) * | 2012-03-05 | 2012-07-18 | 钜泉光电科技(上海)股份有限公司 | Method and device for automatically correcting voltage influence quantity of electric energy measurement chip |
US20120268052A1 (en) * | 2011-04-19 | 2012-10-25 | Electronics And Telecommunications Research Institute | Motor control device and method of controlling the same |
CN103869273A (en) * | 2012-12-18 | 2014-06-18 | 现代自动车株式会社 | Offset compensation method of current sensor and motor driving system |
CN103941080A (en) * | 2013-12-24 | 2014-07-23 | 上海大郡动力控制技术有限公司 | Method for eliminating motor phase current temperature drift in real-time way |
CN104698251A (en) * | 2013-12-05 | 2015-06-10 | Ls产电株式会社 | Power device including current transformer and method for compensating of current transformer |
CN106546934A (en) * | 2015-09-18 | 2017-03-29 | 比亚迪股份有限公司 | Zero shift rectifying method and apparatus when current of electric is sampled |
CN108827366A (en) * | 2018-09-12 | 2018-11-16 | 山东省计算中心(国家超级计算济南中心) | A kind of special detection device and detection method for Hall sensor quality |
CN109696650A (en) * | 2017-10-20 | 2019-04-30 | 株洲中车时代电气股份有限公司 | The current sensor accuracy correcting method and medium of electric vehicle motor controller |
CN111490710A (en) * | 2020-05-06 | 2020-08-04 | 郑州精益达汽车零部件有限公司 | Method and system for identifying zero offset of permanent magnet synchronous motor for vehicle |
-
2019
- 2019-07-26 CN CN201910682117.5A patent/CN110441589B/en active Active
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5858893A (en) * | 1981-09-30 | 1983-04-07 | Hitachi Ltd | Controller for chopper |
CN1474192A (en) * | 2002-08-19 | 2004-02-11 | 乐金电子(天津)电器有限公司 | Detecting method for motor phase current |
JP2005244771A (en) * | 2004-02-27 | 2005-09-08 | Fuji Electric Holdings Co Ltd | A/d conversion circuit, current measurement circuit, charging/discharging amount measurement circuit, and error correction method |
CN102023251A (en) * | 2009-09-17 | 2011-04-20 | 日立空调·家用电器株式会社 | Current detecting method, inverter device and convertor device using the same |
CN102208913A (en) * | 2010-03-31 | 2011-10-05 | 本田技研工业株式会社 | AD conversion circuit and error correcting method |
CN102545735A (en) * | 2010-12-20 | 2012-07-04 | 上海大郡动力控制技术有限公司 | Method for processing current static deviation of permanent magnet motor |
US20120268052A1 (en) * | 2011-04-19 | 2012-10-25 | Electronics And Telecommunications Research Institute | Motor control device and method of controlling the same |
CN102253353A (en) * | 2011-04-19 | 2011-11-23 | 河北省电力研究院 | Method and device for automatically calibrating micro-ammeters |
CN102353918A (en) * | 2011-06-22 | 2012-02-15 | 德讯科技股份有限公司 | Automatic calibration system for current-voltage analog quantity collector |
CN102590782A (en) * | 2012-03-05 | 2012-07-18 | 钜泉光电科技(上海)股份有限公司 | Method and device for automatically correcting voltage influence quantity of electric energy measurement chip |
CN103869273A (en) * | 2012-12-18 | 2014-06-18 | 现代自动车株式会社 | Offset compensation method of current sensor and motor driving system |
CN104698251A (en) * | 2013-12-05 | 2015-06-10 | Ls产电株式会社 | Power device including current transformer and method for compensating of current transformer |
CN103941080A (en) * | 2013-12-24 | 2014-07-23 | 上海大郡动力控制技术有限公司 | Method for eliminating motor phase current temperature drift in real-time way |
CN106546934A (en) * | 2015-09-18 | 2017-03-29 | 比亚迪股份有限公司 | Zero shift rectifying method and apparatus when current of electric is sampled |
CN109696650A (en) * | 2017-10-20 | 2019-04-30 | 株洲中车时代电气股份有限公司 | The current sensor accuracy correcting method and medium of electric vehicle motor controller |
CN108827366A (en) * | 2018-09-12 | 2018-11-16 | 山东省计算中心(国家超级计算济南中心) | A kind of special detection device and detection method for Hall sensor quality |
CN111490710A (en) * | 2020-05-06 | 2020-08-04 | 郑州精益达汽车零部件有限公司 | Method and system for identifying zero offset of permanent magnet synchronous motor for vehicle |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112653368A (en) * | 2020-12-14 | 2021-04-13 | 大力电工襄阳股份有限公司 | Method and system for inhibiting V/F speed regulation light-load oscillation of asynchronous motor |
Also Published As
Publication number | Publication date |
---|---|
CN110441589B (en) | 2022-06-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106655918B (en) | A kind of quick corrective control of brushless DC motor without position sensor commutation deviation | |
EP2164156B1 (en) | Inverter control apparatus and motor drive system | |
CN104967386B (en) | Permagnetic synchronous motor parameter identification method, device and control system | |
CN102624276A (en) | Novel dead-zone effect compensation method of AC servo inverter | |
CN105680755B (en) | The model-free current control device and method of a kind of permagnetic synchronous motor | |
CN105141201A (en) | Magnetic-suspension control moment gyro high-speed motor positionless commutation error correction control system and method | |
CN107017811B (en) | Permanent magnet motor controller and method for no electrolytic capacitor motor driven systems | |
CN107222135A (en) | A kind of D-C brushless electric machine no-position sensor control system phase change control method | |
CN108880297B (en) | Phase compensation device and method based on Vienna rectifier | |
CN110299882B (en) | Three-vector model prediction control method for hybrid power supply type open winding permanent magnet synchronous motor | |
CN107196571A (en) | A kind of bi-motor series connection forecasting type Direct Torque Control | |
Jang et al. | Current measurement issues in sensorless control algorithm using high frequency signal injection method | |
CN104821601A (en) | Three-phase photovoltaic grid-connected inverter control device | |
CN104753375B (en) | A kind of three-level inverter DPWM control methods | |
CN110441589A (en) | A kind of sampling of inverter current in line justification and bearing calibration | |
CN113067505B (en) | Method for compensating voltage vector in control process of permanent magnet synchronous motor | |
CN112737453B (en) | Dead-zone effect compensation method for power component of converter | |
CN106887988B (en) | The compensation method of three-phase electric excitation biconvex electrode electric machine high speed position detection error | |
CN102346219A (en) | Method for detecting phases of access point voltages of voltage source inverter by using three-phase software phase-locked loop | |
CN104578858B (en) | A kind of non-linear compensation method of inverter | |
WO2022262091A1 (en) | Multi-current sensor proportional error balancing control method for pmsm | |
CN106712629A (en) | Current control method for permanent magnet synchronous motor | |
CN116404926A (en) | Low-harmonic optimized synchronous modulation method and device for open-winding permanent magnet synchronous motor | |
CN114499327B (en) | Permanent magnet synchronous motor flux linkage compensation position-sensor-free control method and control system | |
CN101814887B (en) | Driving control method of low-loss hybrid stepping motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |