CN105720868A - Circuit for identifying zero position of rotor of three-phase permanent-magnet synchronous motor - Google Patents

Circuit for identifying zero position of rotor of three-phase permanent-magnet synchronous motor Download PDF

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Publication number
CN105720868A
CN105720868A CN201610260297.4A CN201610260297A CN105720868A CN 105720868 A CN105720868 A CN 105720868A CN 201610260297 A CN201610260297 A CN 201610260297A CN 105720868 A CN105720868 A CN 105720868A
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CN
China
Prior art keywords
optocoupler
resistor
motor
phase winding
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.)
Pending
Application number
CN201610260297.4A
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Chinese (zh)
Inventor
曹红飞
雷继伟
周波
马岭
竺仁杰
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Huayu Automotive Systems Co Ltd
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Huayu Automotive Systems Co Ltd
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Publication date
Application filed by Huayu Automotive Systems Co Ltd filed Critical Huayu Automotive Systems Co Ltd
Priority to CN201610260297.4A priority Critical patent/CN105720868A/en
Publication of CN105720868A publication Critical patent/CN105720868A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
    • H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
    • 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

Abstract

A circuit for identifying the zero position of a rotor of a three-phase permanent-magnet synchronous motor comprises a first detection circuit and a second detection circuit, wherein the first detection circuit and the second detection circuit are connected in parallel to a B-phase winding end and a C-phase winding end of the motor, the first detection circuit comprises a first resistor R1, a second resistor R2 and a first optical coupler T1, and the second detection circuit comprises a third resistor R3, a fourth resistor R4 and a second optical coupler T2. With the circuit for identifying the zero position of the rotor of the three-phase permanent-magnet synchronous motor, the relative positions of a stator and the rotor of the motor can be automatically identified by means of a controller, complicated bench test operation during off-line test of the motor is avoided, and the zero position of the motor also can be directly and self-adaptively corrected on a motor system product.

Description

A kind of identification three-phase permanent magnet synchronous motor rotor zero-bit circuit
Technical field
The present invention relates to electricity field, particularly relate to synchronous motor, particularly a kind of identification three-phase permanent magnet synchronous motor rotor zero-bit circuit.
Background technology
The advantages such as current three-phase permanent magnet synchronous motor relies on its high efficiency, high power density are increasingly widely used, but permagnetic synchronous motor must rely on vector controlled just can give full play to property indices.Its software and hardware must be relied on when controller mates with permagnetic synchronous motor could accurately to be controlled by the relative position of motor position sensor identification rotor.But the amount of parts of motor is many, and during batch production, each parts machining error of motor result in the concordance of initial position angle (herein referred as motor zero-bit) of position sensor and cannot meet the control accuracy requirement of electric system.
In order to solve this problem, method general both at home and abroad at present is that the setting angle after the installation completing motor, rotation become carries out rotational correction one by one, but this operation needs to carry out on the stand of motor, and such debugging operation has rolled up cost of labor and reduced the production efficiency of production line.Additionally need that position sensor is designed to rotary type to fix, add material cost.
Summary of the invention
It is an object of the invention to provide a kind of identification three-phase permanent magnet synchronous motor rotor zero-bit circuit automatically identifying electric machine rotor relative position.
For solving above-mentioned technical problem, identification three-phase permanent magnet synchronous motor rotor zero-bit circuit of the present invention, B phase and the C phase winding end of motor it is parallel to including the first testing circuit and the second testing circuit, the first testing circuit and the second testing circuit；Wherein the first testing circuit is made up of the first resistor R1, the second resistor R2 and the first optocoupler T1；The grounded emitter of the first optocoupler T1, one end of first resistor R1 is connected with the colelctor electrode of the first optocoupler T1, the other end of the first resistor R1 is connected with power Vcc, the positive pole of the first optocoupler T1 is connected with the C phase winding end of motor, one end of second resistor R2 is connected with the negative pole of the first optocoupler T1, and the other end of the second resistor R2 is connected with the B phase winding end of motor；Low level output terminal VL is arranged on the first resistor R1 and the junction of the first optocoupler T1 colelctor electrode, and the I/O mouth of main control chip is connected with low level output terminal VL；Second testing circuit is made up of the 3rd resistor R3, the 4th resistor R4 and the second optocoupler T2；The grounded emitter of the second optocoupler T2, one end of 4th resistor R4 is connected with the colelctor electrode of the second optocoupler T2, the other end of the 4th resistor R4 is connected with power Vcc, the positive pole of the second optocoupler T2 is connected with the B phase winding end of motor, one end of 3rd resistor R3 is connected with the negative pole of the second optocoupler T2, and the other end of the 3rd resistor R3 is connected with the C phase winding end of motor；High level output terminal VH is arranged on the 4th resistor R4 and the junction of the second optocoupler T2 colelctor electrode, and the I/O mouth of main control chip is connected with high level output terminal VH.
Identification three-phase permanent magnet synchronous motor rotor zero-bit circuit of the present invention can rely on controller to automatically identify electric machine rotor relative position.Avoid engine bench test work complicated during motor inserting-coil test, it is also possible on electric system product, directly realize the adaptive corrective of motor null positions.
Accompanying drawing explanation
Fig. 1 is identification three-phase permanent magnet synchronous motor rotor zero-bit circuit theory diagrams of the present invention；
Fig. 2 is identification three-phase permanent magnet synchronous motor rotor zero-bit circuit each point electromotive force check analysis oscillogram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, identification three-phase permanent magnet synchronous motor rotor zero-bit circuit of the present invention is described in further detail.
As it is shown in figure 1, identification three-phase permanent magnet synchronous motor rotor zero-bit circuit of the present invention, it is parallel to B phase and the C phase winding end of motor including the first testing circuit and the second testing circuit, the first testing circuit and the second testing circuit；Wherein the first testing circuit is made up of the first resistor R1, the second resistor R2 and the first optocoupler T1；The grounded emitter of the first optocoupler T1, one end of first resistor R1 is connected with the colelctor electrode of the first optocoupler T1, the other end of the first resistor R1 is connected with power Vcc, the positive pole of the first optocoupler T1 is connected with the C phase winding end of motor, one end of second resistor R2 is connected with the negative pole of the first optocoupler T1, and the other end of the second resistor R2 is connected with the B phase winding end of motor；Low level output terminal VL is arranged on the first resistor R1 and the junction of the first optocoupler T1 colelctor electrode, and the I/O mouth of main control chip is connected with low level output terminal VL；Second testing circuit is made up of the 3rd resistor R3, the 4th resistor R4 and the second optocoupler T2；The grounded emitter of the second optocoupler T2, one end of 4th resistor R4 is connected with the colelctor electrode of the second optocoupler T2, the other end of the 4th resistor R4 is connected with power Vcc, the positive pole of the second optocoupler T2 is connected with the B phase winding end of motor, one end of 3rd resistor R3 is connected with the negative pole of the second optocoupler T2, and the other end of the 3rd resistor R3 is connected with the C phase winding end of motor；High level output terminal VH is arranged on the 4th resistor R4 and the junction of the second optocoupler T2 colelctor electrode, and the I/O mouth of main control chip is connected with high level output terminal VH.
Concrete principle is:
When three-phase travels at the uniform speed with sub-synchronous motors, three-phase windings induced inside goes out three opposite potential voltages (shown in as sinusoidal wave in accompanying drawing 2).Wherein
EA=E0×SIN(ωt)
E B = E 0 × S I N ( ω t + 2 3 π )
E C = E 0 × S I N ( ω t - 2 3 π )
By calculating conclusion: when B, the C two voltage between phase winding is equal, the back-emf of A phase winding is peak value, wherein B opposite potential is negative amplitude lower than C phase excessively moment A opposite potential higher than C in opposite directions；It is true amplitude that B opposite potential is higher than C phase excessively moment A opposite potential in opposite directions lower than C.When motor A phase winding sends true amplitude back-emf, it can be determined that motor rotation become detected position should into 0 ° of electrical angle, when motor A phase winding sends negative amplitude back-emf, it can be determined that motor rotation becomes detected position should into 180 ° of electrical angles.After specify that electric machine rotor relative position, by reading different motor rotation varied angle position, it is possible to calculate the error of zero of motor.
In Fig. 2, time t1 and t2 differs the half period of counter potential waveform, and t1 is that A opposite potential reaches the positive peak moment, and t2 is that A opposite potential reaches the negative peak moment, changes main control chip with back-emf and can collect VL, VH waveform as shown in Figure 2.
When by 0 moment process close to t1, C opposite potential ECBy higher than B opposite potential EB, to C opposite potentialLower than B opposite potential EB。
At the beginning, ECDeduct EBDuring higher than the conducting voltage of optocoupler interior light emitting diodes, first optocoupler T1 interior light emitting diodes work, first optocoupler T1 is in the conduction state, then VL point running voltage is low to moderate voltage (≤0.3V) equal to optocoupler tube voltage drop, and main control chip display VL is low level state.Now voltage suffered by the second optocoupler T2 interior light emitting diodes and the first optocoupler T1 are contrary, are in reverse voltage bias state, then the second optocoupler T2 is in cut-off state, and the voltage of VH point is equal to VCC, and main control chip judges that VH is high level state.
Elapse over time, ECDeduct EBAbsolute value lower than conducting voltage moment of optocoupler interior light emitting diodes, the first optocoupler T1 is changed into closed mode by conducting state, and after the first optocoupler T1 closes, VL voltage rises to VCC, and main control chip judges that VL has low transition to be high level.Second optocoupler T2 keeps cut-off state, and main control chip judges that VH maintains high level.
Time elapses backward again, EBDeduct ECHigher than conducting voltage moment of optocoupler interior light emitting diodes, the light emitting diode of the first optocoupler T1 is in reverse bias, and therefore the first optocoupler T1 keeps cut-off state, and main control chip judges that VL is as persistently low level；Second optocoupler T2 is changed into conducting state by cut-off state, and after the second optocoupler T2 conducting, VH voltage is down to voltage (≤0.3V), and main control chip judges that VH is low level by high level saltus step.
As the process of t2 around, C opposite potential ECBy lower than B opposite potential EB, to C opposite potential ECHigher than in B opposite potential EB。
At the beginning, EBDeduct ECDuring higher than the conducting voltage of optocoupler interior light emitting diodes, second optocoupler T2 interior light emitting diodes work, second optocoupler T2 is in the conduction state, then VH point running voltage is low to moderate voltage (≤0.3V) equal to optocoupler tube voltage drop, and main control chip display VH is low level state.Now the first optocoupler T1 interior light emitting diodes, is in reverse voltage bias state, then the first optocoupler T1 is in cut-off state, and the voltage of VL point is equal to VCC, and main control chip judges that VL is high level state.
Elapse over time, EBDeduct ECAbsolute value lower than conducting voltage moment of optocoupler interior light emitting diodes, the second optocoupler T2 is changed into closed mode by conducting state, and after the second optocoupler T2 closes, VH voltage rises to VCC, and main control chip judges that VH has low transition to be high level.First optocoupler T1 keeps cut-off state, and main control chip judges that VL maintains high level.
Time elapses backward again, ECDeduct EBHigher than conducting voltage moment of optocoupler interior light emitting diodes, the light emitting diode of the second optocoupler T2 is in reverse bias, and therefore the second optocoupler T2 keeps cut-off state, and main control chip judges that VH is as persistently low level；First optocoupler T1 is changed into conducting state by cut-off state, and after the first optocoupler T1 conducting, VL voltage is down to voltage (≤0.3V), and main control chip judges that VL is low level by high level saltus step.
Motor at the uniform velocity rotates, when the parameter of the first optocoupler T1 and the second optocoupler T2 is identical, time difference between VL rising edge and VH trailing edge is (being defined as Δ t1) equal to the time difference between VL trailing edge and VH rising edge, so plus the Δ t/2 moment, VL saltus step rising edge time can be judged as that A opposite potential is in the positive peak moment, plus the Δ t/2 moment, VH saltus step rising edge time can be judged as that A opposite potential is in the negative peak moment.
The rotation change positional value in moment and corresponding moment that A phase winding is just being on software (bearing) peak value carries out contrast and can calculate the zero drift that motor rotation becomes.
Ideally (ignore the turn-on voltage of optocoupler light emitting diode), along with the alternate testing circuit lead-out terminal of three-phase windings back-emf can export the square-wave waveform of symmetry, when wherein motor A phase winding sends anti-amplitude back-emf, VL by high level to low transition, VH by low level to high level saltus step；When motor A phase winding sends true amplitude back-emf, VL is by low level to high level saltus step, and VH is by high level to low transition, and main control chip can change according to the level of any one signal just can detect the motor position sensor error of zero.
In side circuit, the turn-on voltage of optocoupler light emitting diode needs a number of voltage drop, and motor back-emf when low cruise is relatively low, causes that the low level of VL and VG terminal output waveform narrows, and high level broadens (as shown in Figure 2).In this case, directly gather individual signals and judge that zero-bit certainly exists bigger error.If but the level bound-time of VL and VG is all collected, then motor A phase winding occurs that the time of amplitude back-emf only needs to compensate two level bound-time difference halfThe equally possible zero drift being accurately detected motor position sensor.
Below the preferred embodiment of the invention has been illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modification or replacement, these equivalent modification or replacement under the premise without prejudice to the invention spirit and be all contained in the application claim limited range.

Claims (1)

1. one kind identifies three-phase permanent magnet synchronous motor rotor zero-bit circuit, including the first testing circuit and the second testing circuit, first testing circuit and the second testing circuit are parallel to B phase and the C phase winding end of motor, it is characterised in that: the first testing circuit is made up of the first resistor R1, the second resistor R2 and the first optocoupler T1；The grounded emitter of the first optocoupler T1, one end of first resistor R1 is connected with the colelctor electrode of the first optocoupler T1, the other end of the first resistor R1 is connected with power Vcc, the positive pole of the first optocoupler T1 is connected with the C phase winding end of motor, one end of second resistor R2 is connected with the negative pole of the first optocoupler T1, and the other end of the second resistor R2 is connected with the B phase winding end of motor；Low level output terminal VL is arranged on the first resistor R1 and the junction of the first optocoupler T1 colelctor electrode, and the I/O mouth of main control chip is connected with low level output terminal VL；Second testing circuit is made up of the 3rd resistor R3, the 4th resistor R4 and the second optocoupler T2；The grounded emitter of the second optocoupler T2, one end of 4th resistor R4 is connected with the colelctor electrode of the second optocoupler T2, the other end of the 4th resistor R4 is connected with power Vcc, the positive pole of the second optocoupler T2 is connected with the B phase winding end of motor, one end of 3rd resistor R3 is connected with the negative pole of the second optocoupler T2, and the other end of the 3rd resistor R3 is connected with the C phase winding end of motor；High level output terminal VH is arranged on the 4th resistor R4 and the junction of the second optocoupler T2 colelctor electrode, and the I/O mouth of main control chip is connected with high level output terminal VH.
CN201610260297.4A 2016-04-25 2016-04-25 Circuit for identifying zero position of rotor of three-phase permanent-magnet synchronous motor Pending CN105720868A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802612A (en) * 2018-05-21 2018-11-13 华域汽车电动系统有限公司 A kind of hypervelocity experimental stand for automobile drive electric motor rotor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109583A (en) * 1984-12-10 1986-08-27 通用电气公司 Be used for the power-supply system of starting large synchronous rotation motor
US20090079374A1 (en) * 2005-01-07 2009-03-26 Ronald De Four Self Starting Method and an Apparatus for Sensorless Commutation of Brushless Dc Motors
CN201928031U (en) * 2010-12-16 2011-08-10 江苏南自通华电力自动化有限公司 Synchronous switch for controlling switching of three-phase electric-power capacitor
CN105340170A (en) * 2013-06-27 2016-02-17 尚飞公司 Motor control device
CN205584055U (en) * 2016-04-25 2016-09-14 华域汽车电动系统有限公司 Discernment three -phase PMSM rotor zero -bit circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85109583A (en) * 1984-12-10 1986-08-27 通用电气公司 Be used for the power-supply system of starting large synchronous rotation motor
US20090079374A1 (en) * 2005-01-07 2009-03-26 Ronald De Four Self Starting Method and an Apparatus for Sensorless Commutation of Brushless Dc Motors
CN201928031U (en) * 2010-12-16 2011-08-10 江苏南自通华电力自动化有限公司 Synchronous switch for controlling switching of three-phase electric-power capacitor
CN105340170A (en) * 2013-06-27 2016-02-17 尚飞公司 Motor control device
CN205584055U (en) * 2016-04-25 2016-09-14 华域汽车电动系统有限公司 Discernment three -phase PMSM rotor zero -bit circuit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张猛等: ""一种永磁同步电机转子位置传感器零位偏差高精度测量方法"", 《微电机》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108802612A (en) * 2018-05-21 2018-11-13 华域汽车电动系统有限公司 A kind of hypervelocity experimental stand for automobile drive electric motor rotor
CN108802612B (en) * 2018-05-21 2023-12-08 华域汽车电动系统有限公司 Overspeed experiment bench for automobile driving motor rotor

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Application publication date: 20160629