CN113271045A - System and method for identifying electric angle of synchronous motor resolver of range extender system on line - Google Patents
System and method for identifying electric angle of synchronous motor resolver of range extender system on line Download PDFInfo
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- CN113271045A CN113271045A CN202110510320.1A CN202110510320A CN113271045A CN 113271045 A CN113271045 A CN 113271045A CN 202110510320 A CN202110510320 A CN 202110510320A CN 113271045 A CN113271045 A CN 113271045A
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- motor
- range extender
- axis current
- engine
- motor controller
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- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012937 correction Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000012795 verification Methods 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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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
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
- H02P21/14—Estimation or adaptation of machine parameters, e.g. flux, current or voltage
- H02P21/18—Estimation of position or speed
-
- 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
-
- 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
- H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
- H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention discloses a method for identifying the electrical angle of a synchronous motor resolver of a range extender system on line, which comprises the following steps: parameter setting of the motor controller: when the engine keeps idling, a work enabling instruction is sent to the motor controller, and after the motor controller receives the work enabling instruction, d-axis current and q-axis current of the synchronous motor can be set; and motor parameter observation: and when the d-axis current is set to be equal to the q-axis current and equal to zero, calculating the corresponding d-axis voltage value of the synchronous motor according to the d-axis current and the q-axis current fed back by the sensor and the current rotation angle deviation value. The method can execute the angular deviation correction by using specific parameters (special angle correction function) in the motor controller without separating the range extender motor from the engine.
Description
Technical Field
The present invention relates to the field of measuring electrical variables of engines, and more particularly, to a system and method for identifying an electrical angle of a resolver (resolver) of a synchronous motor of a range extender system on line.
Background
A rotary transformer (hereinafter referred to as rotary transformer) of a synchronous motor for a vehicle can judge the relative position of a rotary transformer stator and a rotary transformer rotor when circuit analysis is carried out, thereby realizing accurate torque control of the motor for the vehicle. However, due to the installation error of the motor in the manufacturing process, the relative positions of the motor stator and the motor rotor are not completely consistent, but have a fixed angular deviation, in this case, an initial angular calibration is needed, and the deviation is tested and written into the controller. When correcting the angle, the output end is generally required to have no load, namely no moment.
In the existing scheme, if the range extender motor is already installed on the engine, the motor can only be detached, and then the angular deviation correction is carried out. If the angle is corrected without detaching the motor, the angle correction program in the motor controller can not be accurately corrected because the output end of the motor is loaded due to the influence of the friction work of the engine, the position of the piston and the opening and closing of the valve.
After the motor is removed, there are generally only 2 methods for adjusting the rotary transformer. The method 1 is that on the production line, a rotary transformer zeroing instrument is used for correcting the angle deviation; the 2 nd method is to activate the angle correction function of the motor controller on the motor rack, and to introduce a certain d-axis current to fix the motor on the accurate angle initial zero position for angle deviation correction.
In the existing scheme, the range extender motor needs to be separated from the engine, and then the angular deviation correction can be executed. The prior scheme has the following defects: in the installation process of the range extender, if the position deviation occurs, the rotation angle deviation of the motor cannot be accurately identified on line (on line: the motor is not separated from the engine), and the correction can be finished only after the motor is detached.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a system for identifying the electric angle of a synchronous motor resolver of a range extender system on line, which can execute angle deviation correction by using specific parameters (special angle correction function) in a motor controller without separating a range extender motor from an engine.
Another object of the present invention is to provide a method for online identification of the electrical angle of the resolver of the synchronous motor of the range extender system, which can eliminate the complicated assembling and disassembling steps and the related tool preparation in the prior art.
In order to achieve the above object, the present invention provides a system for identifying an electrical angle of a resolver of a synchronous motor of a range extender system on line, which comprises a range extender motor, a motor controller, an upper computer and a vehicle-mounted computer; the range extender motor is arranged on the engine; the motor controller is connected with the range extender motor through a high-voltage wire; the upper computer is connected with the motor controller through a communication line; and the vehicle-mounted computer is connected with the engine through a communication line.
In a preferred embodiment, the upper computer is used for parameter setting and parameter observation of the motor controller; the motor controller is used for controlling the range extender motor; the vehicle-mounted computer is used for overall control of the engine.
In order to achieve the above object, the present invention provides a method for identifying an electrical angle of a resolver of a synchronous motor of a range extender system on line, comprising the following steps: parameter setting of the motor controller: when the engine keeps idling, a work enabling instruction is sent to the motor controller, and after the motor controller receives the work enabling instruction, d-axis current and q-axis current of the synchronous motor can be set; and motor parameter observation: and when the d-axis current is set to be equal to the q-axis current and equal to zero, calculating the corresponding d-axis voltage value of the synchronous motor according to the d-axis current and the q-axis current fed back by the sensor and the current rotation angle deviation value.
In a preferred embodiment, the method for online identifying the electrical angle of the synchronous motor resolver of the range extender system further comprises: adjusting the angle deviation: adjusting the angle of the rotary transformer on line until the observed d-axis voltage of the synchronous motor is zero or close to zero, namely finishing the angle correction; and verifying the angle: and still setting the d-axis current equal to the q-axis current equal to zero, activating a TSC (thyristor switched capacitor) function of the engine, operating the engine at the highest working rotating speed, observing whether the d-axis voltage fed back by the motor controller is zero or not, and finishing verification if the d-axis voltage is zero.
In a preferred embodiment, before the parameter setting step of the motor controller, a preparation step before commissioning is further included: the range extender system is pressurized while the engine is started and maintained at an idle speed.
Compared with the prior art, the system and the method for identifying the electric angle of the synchronous motor resolver of the range extender system on line have the following beneficial effects: in the process of correcting the electrical angle, a range extender system does not need to be disassembled, and an additional instrument does not need to be used; compare and dismantle the range extender system and rectify, this proposal does not need to dismantle, has saved motor frock promptly, motor rack and has tested (generally speaking, the range extender motor needs purpose-made frock) the precision of rectifying is high: the problem that the output end of the range extender motor is always provided with a load and cannot be corrected by using a traditional rotation angle correction method is solved; the d-axis current is switched to the d-axis voltage, so that the problem that the motor cannot reach an accurate zero position due to the fact that a load is arranged at the output end of the motor in the range extender system and a certain torque generated by the d-axis current is solved; the correction method is simple and easy to realize: the correction can be completed without disassembling the motor and with the help of extra tools, and the controlled and observed physical quantities are necessary quantities in the control of the synchronous motor without extra calculation.
Drawings
FIG. 1 is a schematic diagram of an identification system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an identification method according to an embodiment of the invention.
Description of the main reference numerals:
1-an upper computer, 2-a motor controller, 3-a range extender motor, 4-an engine, 5-a vehicle-mounted computer, Id-a d-axis current of a synchronous motor, Iq-a q-axis current of the synchronous motor and Ud-a d-axis voltage of the synchronous motor.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, a system for online identifying an electrical angle of a resolver of a synchronous motor of a range extender system according to a preferred embodiment of the present invention mainly includes an upper computer 1, a motor controller 2(mcu (microcontroller unit)), a range extender motor 3, and an on-board computer 5(ecu (electronic Control unit)), etc. The range extender motor 3 is provided on the engine 4. The motor controller 2 is connected with the range extender motor 3 through a high-voltage wire. The upper computer 1 is connected with the motor controller 2 through a communication line. And the vehicle-mounted computer 5 is connected with the engine 4 through a communication line.
In some embodiments, the upper computer 1 is used for parameter setting and parameter observation of the motor controller 2. The motor controller 2 is used for controlling the range extender motor 3. The on-board computer 5 is used for overall control of the engine 4.
In order to achieve the above object, the present invention further provides a method for identifying an electrical angle of a resolver of a synchronous motor of a range extender system on line, comprising the following steps:
preparation steps before debugging: the range extender system is pressurized while the engine 4 is started and the engine 4 is maintained in an idle state.
Parameter setting step of the motor controller 2: when the engine 4 maintains the idling speed, a work enabling instruction is sent to the motor controller 2, and after the motor controller 2 receives the work enabling instruction, the d-axis current Id and the q-axis current Iq of the synchronous motor can be set.
And (3) motor parameter observation: and when the d-axis current Id is set to be equal to the q-axis current Iq, the d-axis voltage Ud value of the corresponding synchronous motor can be calculated according to the d-axis current Id and the q-axis current Iq fed back by the sensors and the current rotation angle deviation value. And
adjusting the angle deviation: adjusting the angle of the rotary transformer on line until the observed d-axis voltage Ud of the synchronous motor is zero or close to zero, namely finishing the angle correction; and verifying the angle: and still setting the d-axis current Id equal to the q-axis current Iq equal to zero, activating a TSC function of the engine 4, operating the engine 4 at the highest working rotation speed, observing whether a d-axis voltage Ud fed back by the motor controller 2 is zero or not, and finishing verification if the d-axis voltage Ud is zero.
The set quantity in the above steps is the observed quantity: id. Iq and Ud are indispensable quantities in synchronous motor control, and can be set and observed in any stable synchronous motor control system.
In summary, the system and method for identifying the electrical angle of the resolver of the synchronous motor of the range extender system on line of the present invention have the following advantages: in the process of correcting the electrical angle, a range extender system does not need to be disassembled, and an additional instrument does not need to be used; compare and dismantle the range extender system and rectify, this proposal does not need to dismantle, has saved motor frock promptly, motor rack and has tested (generally speaking, the range extender motor needs purpose-made frock) the precision of rectifying is high: the problem that the output end of the range extender motor is always provided with a load and cannot be corrected by using a traditional rotation angle correction method is solved; the d-axis current is switched to the d-axis voltage, so that the problem that the motor cannot reach an accurate zero position due to the fact that a load is arranged at the output end of the motor in the range extender system and a certain torque generated by the d-axis current is solved; the correction method is simple and easy to realize: the correction can be completed without disassembling the motor and with the help of extra tools, and the controlled and observed physical quantities are necessary quantities in the control of the synchronous motor without extra calculation.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. A system for identifying an electrical angle of a resolver of a synchronous motor of a range extender system on line, comprising:
a range extender motor provided on the engine;
the motor controller is connected with the range extender motor through a high-voltage wire;
the upper computer is connected with the motor controller through a communication line; and
and the vehicle-mounted computer is connected with the engine through a communication line.
2. The system for on-line identification of the electrical angle of the synchronous motor rotor of the range extender system as claimed in claim 1, wherein the upper computer is used for parameter setting and parameter observation of the motor controller; the motor controller is used for controlling the range extender motor; the vehicle-mounted computer is used for overall control of the engine.
3. A method for identifying the electrical angle of a resolver of a synchronous motor of a range extender system on line is characterized by comprising the following steps:
parameter setting of the motor controller: when the engine keeps idling, a work enabling instruction is sent to the motor controller, and after the motor controller receives the work enabling instruction, d-axis current and q-axis current of the synchronous motor can be set; and
and (3) motor parameter observation: and when the d-axis current is set to be equal to the q-axis current and equal to zero, calculating the corresponding d-axis voltage value of the synchronous motor according to the d-axis current and the q-axis current fed back by the sensor and the current rotation angle deviation value.
4. The method of identifying the resolver electrical angle of the synchronous motor of the range extender system on line as claimed in claim 3, further comprising:
adjusting the angle deviation: adjusting the angle of the rotary transformer on line until the observed d-axis voltage of the synchronous motor is zero or close to zero, namely finishing the angle correction; and
angle verification: and still setting the d-axis current equal to the q-axis current equal to zero, activating a TSC (thyristor switched capacitor) function of the engine, operating the engine at the highest working rotating speed, observing whether the d-axis voltage fed back by the motor controller is zero or not, and finishing verification if the d-axis voltage is zero.
5. The method of claim 3, further comprising a pre-commissioning preparation step prior to the step of setting the parameters of the motor controller: the range extender system is pressurized while the engine is started and maintained at an idle speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110510320.1A CN113271045A (en) | 2021-05-11 | 2021-05-11 | System and method for identifying electric angle of synchronous motor resolver of range extender system on line |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110510320.1A CN113271045A (en) | 2021-05-11 | 2021-05-11 | System and method for identifying electric angle of synchronous motor resolver of range extender system on line |
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| CN113271045A true CN113271045A (en) | 2021-08-17 |
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