CN105071716A - Duplex winding brushless direct current motor frequency multiplication chop control circuit and counter potential zero crossing point detection method - Google Patents
Duplex winding brushless direct current motor frequency multiplication chop control circuit and counter potential zero crossing point detection method Download PDFInfo
- Publication number
- CN105071716A CN105071716A CN201510351256.1A CN201510351256A CN105071716A CN 105071716 A CN105071716 A CN 105071716A CN 201510351256 A CN201510351256 A CN 201510351256A CN 105071716 A CN105071716 A CN 105071716A
- Authority
- CN
- China
- Prior art keywords
- inverter circuit
- frequency multiplication
- zero crossing
- sampling
- circuit
- 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
Abstract
The present invention relates to a duplex winding brushless direct current motor frequency multiplication chop control circuit and a counter potential zero crossing point detection method. The frequency multiplication chop technology is utilized, a novel motor topological structure is combined, a phase difference exists in a chopped wave manner, time-sharing sampling of voltage and a follow current manner of a non-conducting phase terminal is carried out according to the phase difference, frequency multiplication sampling of zero crossing points is realized, and counter potential zero crossing point sampling precision and rotating speed sampling precision are raised. The detection method is especially applicable to a sensorless start high-speed brushless direct current motor. In comparison with those of the prior art, the method provided by the present invention is characterized in that the motor topological structure and frequency multiplication chop technology are utilized, the phase difference exists in a chopped wave manner, time-sharing sampling of the voltage and the follow current manner of the non-conducting phase terminal is carried out according to the phase difference, frequency multiplication sampling of the zero crossing points is realized, and the counter potential zero crossing point sampling precision and the rotating speed sampling precision are raised.
Description
Technical field
The invention belongs to technical field of motors, relate to a kind of double winding brshless DC motor frequency multiplication control circuit of chopping and back-emf zero-crossing examination method.
Background technology
Brushless DC motor without position sensor can meet the needs of various workplace.Compare traditional controller having Hall element, this technology has the advantage of the following aspects: Sensorless Control Technique not only can save expensive position transducer expense, reduce motor size, save space, whole system complexity can also be reduced, the commutation mistake avoiding sensor fault to cause, and make I& M convenient.
In recent years, all occurred a lot of position signalling detection methods both at home and abroad, rotor-position sampling can be divided into terminal voltage method (back-emf zero crossing detection), triple-frequency harmonics method, flux observation method and some intelligent methods according to the processing method different to associated electrical signals.Wherein triple-frequency harmonics method and flux observation method, owing to have employed, the impact that fly-wheel diode estimates rotor-position is avoided on the method for voltage integrating meter, be applicable to the position-sensor-free technology of permanent-magnet brushless DC electric machine, but need high-frequency AD to sample to voltage integrating meter, increase operand simultaneously, be not suitable for high-speed brushless Electric Machine Control.The method of back-emf zero crossing is compared the terminal voltage of not conducting phase and the virtual mid-point voltage calculated, and also can obtain the zero crossing of back electromotive force.This method is very simple, also more convenient to achieve.
But when high speed must with high sample frequency to permanent-magnet brushless DC electric machine in multiple physical quantity measure, then run complicated algorithm and estimate rotor-position, even if adopt the controller that dominant frequency is higher like this, be also difficult to obtain accurate position signalling in real time.Further, along with the raising of motor speed, location-estimation algorithm is difficult to the situation calculating current motor rotor in time, and for the situation that the range of speeds is larger, the detection of position-sensor-free is difficult to realize.
Summary of the invention
The technical problem solved
In order to avoid the deficiencies in the prior art part, the present invention proposes a kind of double winding brshless DC motor frequency multiplication control circuit of chopping and back-emf zero-crossing examination method, utilize the thought of frequency multiplication wave chopping technology, phase difference is there is by chopping way, can according to the non-conduction phase terminal voltage of this phase difference time sharing sampling, realize times frequency sampling of zero crossing, improve back-emf zero crossing sampling precision, and rotating speed sampling precision.Be specially adapted to the high-speed brushless DC electromotor started without position.This technology adds sampling number while reduction AD sampling rate, improves the precision of high-speed electric expreess locomotive position estimation.
Technical scheme
A kind of double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping, it is characterized in that the first inverter circuit comprising Q1, Q2, Q3, Q4, Q5 and Q6 composition, second inverter circuit of Q7, Q8, Q9, Q10, Q11 and Q12 composition, C1 bus capacitor, C2 bus capacitor, Q14 diverter switch, Q15 diverter switch, R1 charge circuit resistance, R2 charge circuit resistance, Q16 switching tube, Q17 switching tube, D1 anti-parallel diodes, series diode Q13 between D2 anti-parallel diodes and loop; The winding that first inverter circuit is connected with a Y type is connected, and the winding that the second inverter circuit is connected with the 2nd Y type is connected, series diode Q13 between the first inverter circuit and the second inverter circuit; First inverter circuit is connected to the ground through Q15, and the second inverter circuit is connected through Q14 and Vcc; Q14 two ends are parallel with the charge circuit that R1, Q16 and anti-parallel diodes D1 form, and Q15 two ends are parallel with the charge circuit that R2, Q17 and anti-parallel diodes D2 form; The bus bus capacitor C1 in parallel of the first inverter circuit, the bus bus capacitor C2 in parallel of the second inverter circuit.
Inverter circuit Q1, Q2, Q3, Q4, Q5 and Q6 of described first inverter circuit, Q7, Q8, Q9, Q10, Q11 and Q12 of the second inverter circuit, and diverter switch Q14 and diverter switch Q15 adopts IGBT or MOSFET pipe.
The described double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping of a kind of employing carries out back-emf zero-crossing examination method, it is characterized in that step is as follows:
Step 1: the pwm signal that the first inverter circuit and the second inverter circuit apply double winding, two pwm signals have phase place difference;
Step 2: back-emf zero-crossing examination is carried out to double winding, sampling obtains the back-emf voltage data of twice;
Step 3: by the back-emf data that collect, the data of upper pipe commutation deduct 1/2VCC, and the data of lower pipe commutation add 1/2VCC, the data processed are carried out linear fit, obtains back-emf zero crossing.
Beneficial effect
A kind of double winding brshless DC motor frequency multiplication control circuit of chopping that the present invention proposes and back-emf zero-crossing examination method, utilize the thought of frequency multiplication wave chopping technology, in conjunction with New-type electric machine topological structure, phase difference is there is by chopping way, can according to the non-conduction phase terminal voltage of this phase difference time sharing sampling and afterflow mode, realize times frequency sampling of zero crossing, improve back-emf zero crossing sampling precision, and rotating speed sampling precision.Be specially adapted to the high-speed brushless DC electromotor started without position.Compared with prior art, the present invention have following some: the thought utilizing motor topology structure and frequency multiplication wave chopping technology, phase difference is there is by chopping way, can according to the non-conduction phase terminal voltage of this phase difference time sharing sampling, realize times frequency sampling of zero crossing, improve back-emf zero crossing sampling precision, and rotating speed sampling precision.
Accompanying drawing explanation
Zero-crossing examination Method And Principle figure when Fig. 1 is generating
Fig. 2 is non-conduction opposite potential sampling general illustration of the present invention
Fig. 3 is non-conduction opposite potential back-emf sampling partial schematic diagram of the present invention
Fig. 4 is control circuit topological diagram
Fig. 5 is four kinds of pwm signals having differed 1/4th chopping cycles successively
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
The present invention utilizes the thought of frequency multiplication wave chopping technology, in conjunction with New-type electric machine topological structure, there is phase difference by chopping way, can according to the non-conduction phase terminal voltage of this phase difference time sharing sampling, realize times frequency sampling of zero crossing, improve back-emf zero crossing sampling precision, and rotating speed sampling precision.Be specially adapted to the high-speed brushless DC electromotor started without position.
As shown in Figure 2, a kind of voltage zero-cross point detecting method combined with high-speed brushless DC electromotor frequency multiplication chopping way is provided.The present invention includes: two cover inverter circuits connect two cover motor windings, two bus capacitors (C1, C2) respectively, two diverter switches (Q14, Q15), two charge circuit resistance (R1, R2) and switching tube (Q16, Q17) anti-parallel diodes D1, D2, and series diode Q13 between two cover loops.
Annexation: the winding that the first inverter circuit is connected with a Y type is connected, the winding that the second inverter circuit is connected with the 2nd Y type is connected, series diode Q13 between the first inverter circuit and the second inverter circuit; First inverter circuit is connected to the ground through Q15, and the second inverter circuit is connected through Q14 and Vcc; Q14 two ends are parallel with the charge circuit that R1, Q16 and anti-parallel diodes D1 form, and Q15 two ends are parallel with the charge circuit that R2, Q17 and anti-parallel diodes D2 form; The bus bus capacitor C1 in parallel of the first inverter circuit, the bus bus capacitor C2 in parallel of the second inverter circuit.
Inverter circuit Q1, Q2, Q3, Q4, Q5 and Q6 of described first inverter circuit, Q7, Q8, Q9, Q10, Q11 and Q12 of the second inverter circuit, and diverter switch Q14 and diverter switch Q15 adopts IGBT or MOSFET pipe.
Double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping is adopted to carry out back-emf zero-crossing examination step as follows:
Step 1: the pwm signal that the first inverter circuit and the second inverter circuit apply double winding, two pwm signals have phase place difference; Pwm signal difference 1/4th chopping cycles of two cover control circuits in the present embodiment.
Step 2: back-emf zero-crossing examination is carried out to double winding, sampling obtains the back-emf voltage data of twice;
Step 3: by the back-emf data that collect, the data of upper pipe commutation deduct 1/2VCC, and the data of lower pipe commutation add 1/2VCC, the data processed are carried out linear fit, obtains back-emf zero crossing.
Detailed process: consider motor height rotating speed and power device switching frequency limited between contradiction, adopt the frequency multiplication discrete sampling method that PWM-ON, PWM-OFF-LOW and PWM-OFF-HIGH combine, rotor zero crossing is found, to realize the sampling of rotor-position through curve.
The PWM-ON stage
In each cycle that power tube is opened, the amplitude of the terminal voltage of non-conduction phase that sampling should be carried out (for A phase), and compare with 1/2 busbar voltage, when comparing triggering, two adjacent points are carried out curve fitting, in conjunction with the sampling period that it is fixing, obtains the zero crossing of non-conduction back-emf, put 1 ~ 14 as shown in Figure 3, wherein A1 cover winding 1,3,5 odd number such as grade and A2 overlap winding 2,4,6 points such as grade have phase difference.
PWM-OFF-LOW and the PWM-OFF-HIGH stage
The chopping way that the present invention adopts has the advantages that copped wave continuous current circuit replaces afterflow in high-pressure side and low-pressure side.Before back-EMF commutation point, for PWM-OFF-LOW, the voltage collected during low-pressure side afterflow changes along with back-emf, the voltage collected during the afterflow of high-pressure side is busbar voltage, puts 23 ~ 30 (wherein A1 cover winding 23 ~ 26 point such as grade and A2 overlap the points such as winding 26 ~ 30 phase difference) as shown in Figure 3.Otherwise, after back-EMF commutation point, the voltage collected during the afterflow of high-pressure side changes along with back-emf, and the voltage collected when low-pressure side afterflow is ground voltage, puts 15 ~ 22 as shown in Figure 3 (wherein A1 overlap winding 15 ~ 18 overlap point such as winding 19 ~ 22 grade with A2 and have phase difference).
Because on off state is controlled, by PWM_OFF phase acquisition to voltage carry out comprehensively, rejecting 1/2nd busbar voltages respectively, by curve, just can obtain commutation point.Because the copped wave of double winding exists phase difference, according to the non-conduction phase terminal voltage of this phase difference time sharing sampling, can obtain the positional information of 2 times, realize times frequency sampling of zero crossing, improve back-emf zero crossing sampling precision, and rotating speed sampling precision.
Claims (3)
1. a double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping, it is characterized in that the first inverter circuit comprising Q1, Q2, Q3, Q4, Q5 and Q6 composition, second inverter circuit of Q7, Q8, Q9, Q10, Q11 and Q12 composition, C1 bus capacitor, C2 bus capacitor, Q14 diverter switch, Q15 diverter switch, R1 charge circuit resistance, R2 charge circuit resistance, Q16 switching tube, Q17 switching tube, D1 anti-parallel diodes, series diode Q13 between D2 anti-parallel diodes and loop; The winding that first inverter circuit is connected with a Y type is connected, and the winding that the second inverter circuit is connected with the 2nd Y type is connected, series diode Q13 between the first inverter circuit and the second inverter circuit; First inverter circuit is connected to the ground through Q15, and the second inverter circuit is connected through Q14 and Vcc; Q14 two ends are parallel with the charge circuit that R1, Q16 and anti-parallel diodes D1 form, and Q15 two ends are parallel with the charge circuit that R2, Q17 and anti-parallel diodes D2 form; The bus bus capacitor C1 in parallel of the first inverter circuit, the bus bus capacitor C2 in parallel of the second inverter circuit.
2. double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping according to claim 1, it is characterized in that: inverter circuit Q1, Q2, Q3, Q4, Q5 and Q6 of described first inverter circuit, Q7, Q8, Q9, Q10, Q11 and Q12 of second inverter circuit, and diverter switch Q14 and diverter switch Q15 adopts IGBT or MOSFET pipe.
3. adopt double winding high-speed brushless DC electromotor frequency multiplication control circuit of chopping described in claim 1 or 2 to carry out a back-emf zero-crossing examination method, it is characterized in that step is as follows:
Step 1: the pwm signal that the first inverter circuit and the second inverter circuit apply double winding, two pwm signals have phase place difference;
Step 2: back-emf zero-crossing examination is carried out to double winding, sampling obtains the back-emf voltage data of twice;
Step 3: by the back-emf data that collect, the data of upper pipe commutation deduct 1/2VCC, and the data of lower pipe commutation add 1/2VCC, the data processed are carried out linear fit, obtains back-emf zero crossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351256.1A CN105071716B (en) | 2015-06-23 | 2015-06-23 | Double winding brshless DC motor frequency multiplication control circuit of chopping and back-emf zero-crossing examination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351256.1A CN105071716B (en) | 2015-06-23 | 2015-06-23 | Double winding brshless DC motor frequency multiplication control circuit of chopping and back-emf zero-crossing examination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105071716A true CN105071716A (en) | 2015-11-18 |
| CN105071716B CN105071716B (en) | 2018-02-02 |
Family
ID=54501021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510351256.1A Active CN105071716B (en) | 2015-06-23 | 2015-06-23 | Double winding brshless DC motor frequency multiplication control circuit of chopping and back-emf zero-crossing examination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105071716B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448956A (en) * | 2018-05-03 | 2018-08-24 | 东北大学 | A kind of detecting apparatus for rotor position of six phases asymmetrical square wave motor |
| CN108964561A (en) * | 2018-07-31 | 2018-12-07 | 河南森源重工有限公司 | A kind of control method of double three-phase machine drive system and double three-phase machine |
| CN109143064A (en) * | 2018-08-01 | 2019-01-04 | 浙江东方机电有限公司 | Counter electromotive force test device and method in permanent magnet synchronous motor commutation process |
| CN109845089A (en) * | 2016-09-02 | 2019-06-04 | Mmt有限公司 | The electromechanical assemblies controlled by pulse width modulating signal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090250279A1 (en) * | 2008-04-02 | 2009-10-08 | Gm Global Technology Operations, Inc. | Power systems for hybrid electric vehicle (hev) |
| CN102158035A (en) * | 2010-02-11 | 2011-08-17 | 唐山普林亿威科技有限公司 | Dual-three-phase bisymmetric winding permanent-magnet brushless direct-current motor |
| CN202772838U (en) * | 2012-06-18 | 2013-03-06 | 廖启新 | Electric vehicle power system with fault tolerance function |
| CN203457066U (en) * | 2013-08-14 | 2014-02-26 | 北京京仪绿能电力系统工程有限公司 | T-type three-level photovoltaic grid-connected inverter |
| CN105048897A (en) * | 2015-06-23 | 2015-11-11 | 西北工业大学 | Frequency multiplication chopping control circuit and control method for double-winding high-speed brushless DC motor |
| CN105048900A (en) * | 2015-06-23 | 2015-11-11 | 西北工业大学 | Frequency multiplication chopping control circuit for double-winding high-speed brushless DC motor and winding switching control method |
-
2015
- 2015-06-23 CN CN201510351256.1A patent/CN105071716B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090250279A1 (en) * | 2008-04-02 | 2009-10-08 | Gm Global Technology Operations, Inc. | Power systems for hybrid electric vehicle (hev) |
| CN102158035A (en) * | 2010-02-11 | 2011-08-17 | 唐山普林亿威科技有限公司 | Dual-three-phase bisymmetric winding permanent-magnet brushless direct-current motor |
| CN202772838U (en) * | 2012-06-18 | 2013-03-06 | 廖启新 | Electric vehicle power system with fault tolerance function |
| CN203457066U (en) * | 2013-08-14 | 2014-02-26 | 北京京仪绿能电力系统工程有限公司 | T-type three-level photovoltaic grid-connected inverter |
| CN105048897A (en) * | 2015-06-23 | 2015-11-11 | 西北工业大学 | Frequency multiplication chopping control circuit and control method for double-winding high-speed brushless DC motor |
| CN105048900A (en) * | 2015-06-23 | 2015-11-11 | 西北工业大学 | Frequency multiplication chopping control circuit for double-winding high-speed brushless DC motor and winding switching control method |
Non-Patent Citations (1)
| Title |
|---|
| 刘卫国等: "双余度无刷直流电机控制系统", 《电气技术》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109845089A (en) * | 2016-09-02 | 2019-06-04 | Mmt有限公司 | The electromechanical assemblies controlled by pulse width modulating signal |
| CN109845089B (en) * | 2016-09-02 | 2022-12-09 | Mmt有限公司 | Electromechanical assembly controlled by pulse width modulation signal |
| CN108448956A (en) * | 2018-05-03 | 2018-08-24 | 东北大学 | A kind of detecting apparatus for rotor position of six phases asymmetrical square wave motor |
| CN108448956B (en) * | 2018-05-03 | 2021-08-10 | 东北大学 | Rotor position detection device of six-phase asymmetric square wave motor |
| CN108964561A (en) * | 2018-07-31 | 2018-12-07 | 河南森源重工有限公司 | A kind of control method of double three-phase machine drive system and double three-phase machine |
| CN109143064A (en) * | 2018-08-01 | 2019-01-04 | 浙江东方机电有限公司 | Counter electromotive force test device and method in permanent magnet synchronous motor commutation process |
| CN109143064B (en) * | 2018-08-01 | 2020-11-24 | 浙江东方机电有限公司 | Counter electromotive force testing device and method in reversing process of permanent magnet synchronous motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105071716B (en) | 2018-02-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101262196B (en) | Method for detecting rotor location of no location sensor brushless DC motor | |
| CN106452225B (en) | Brushless DC motor without position sensor commutation phase System with Real-Time and method | |
| CN102075131B (en) | Low-speed and zero-speed rotor position observation method and device during fault-tolerant operation of synchronous motor | |
| CN107834917B (en) | Back electromotive force phase change point detection circuit and method of direct current brushless motor | |
| KR20150041601A (en) | Resolver calibration for permanent magnet synchronous motor | |
| Chowdhury et al. | Modelling and simulation of cost effective sensorless drive for brushless DC motor | |
| CN102969955A (en) | Non-position detection of permanent magnetic direct-current brushless double-rotor motor | |
| CN101699757A (en) | Method suitable for low-speed switched reluctance motor without position sensor | |
| CN105071716A (en) | Duplex winding brushless direct current motor frequency multiplication chop control circuit and counter potential zero crossing point detection method | |
| CN103825523B (en) | Multiphase permanent magnet synchronous motor Phase sequence detection and rotor initial angle navigation system and method | |
| CN105958891A (en) | Switch magnetic resistance motor motion control method based on DSP+CPLD | |
| CN113300647A (en) | Static AC-DC axis inductance identification method for permanent magnet synchronous motor | |
| CN103236807A (en) | Electro-magnetic doubly salient motor rotor position identification method based on three-phase six-state start | |
| CN103633904A (en) | Control method and control system for sensorless brushless direct-current motor | |
| CN104734581A (en) | Driving method for position-sensorless of permanent magnet brushless direct current motor | |
| CN103684143B (en) | A kind of electric excitation biconvex electrode electric machine based on commutation point current response starts acceleration position-sensor-free method | |
| CN106787997B (en) | A kind of electric excitation biconvex electrode electric machine rotor exact position estimation method | |
| CN103684138A (en) | Three-phase electro-magnetic double-salient-pole motor high-speed sensorless control strategy based on non-communicating phase terminal voltage coordinate transformation | |
| CN109687779B (en) | Brushless direct current motor rotor position detection method based on single-phase inductance detection | |
| Ajmal et al. | Back EMF based sensorless BLDC drive using filtered line voltage difference | |
| CN105227012A (en) | Back-emf zero passage detection method under the two chopper control mode of brshless DC motor | |
| CN110798114B (en) | Switched reluctance motor position sensorless control method based on overlapped phase inductance | |
| CN105356811B (en) | A kind of detection method of permagnetic synchronous motor initial position | |
| CN105515470A (en) | Rotor position detection circuit for direct-current brushless motors | |
| CN102664572B (en) | Position sensorless control device of medium and high-voltage commutatorless motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |