Angle compensation method and system for automatic calibration of motor initial position angle
A technology for motor initial position and angle compensation, applied in control systems, control generators, vector control systems, etc., can solve problems such as angle deviation, reduce the measurement accuracy of the initial position angle of the motor, torque control accuracy and work efficiency, and achieve improvement Effects of work efficiency, improvement of measurement accuracy and torque control accuracy
Inactive Publication Date: 2019-09-20
BORGWARD AUTOMOTIVE CHINA CO LTD
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Problems solved by technology
However, due to the influence of the internal parameters of the motor, there is a power factor angle between the phase current and the phase voltage of the motor. Therefore, there is an angle deviation in the initial position angle of the motor calculated by using the zero-crossing point of the phase A current, which will reduce the measurement accuracy of the initial position angle of the motor and torque control. Precision and Work Efficiency
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[0044] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0045] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...
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The invention provides an automatic calibration angle compensation method and system for a motor initial position angle. The method comprises a step of obtaining the motor initial position angle, a step of obtaining a power factor angle of A phase according to input power of a motor, A and B line voltage and A phase current, a step of obtaining an electrical angle frequency according to a rotation speed of the motor, and obtaining an inner power factor angle of A phase according to the electrical angle frequency and the power factor, and a step of compensating the motor initial position angle according to the inner power factor angle so as to obtain a final motor initial position angle. According to the method, the measurement precision and torque control precision of the motor initial position angle can be improved, and the working efficiency of the motor is improved at the same time.
Description
technical field [0001] The invention relates to the technical field of motors, in particular to an angle compensation method and system for automatic calibration of an initial position angle of a motor. Background technique [0002] During the production and assembly of the permanent magnet synchronous motor, affected by the motor assembly process, there is an angle deviation between the installation angle of the motor resolver and the electrical angle of the motor rotor. This angle deviation is called the initial angle of the motor. The initial angle of the motor can be obtained through test calibration before the motor controller matches the motor. [0003] The current automatic calibration method for the initial position angle of the motor is to calculate the initial position angle of the motor by using the deviation between the zero-crossing point of the A-phase current and the zero angle of the resolver. However, due to the influence of the internal parameters of the m...
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IPC IPC(8): H02P21/32H02P6/182
Inventor 孙阳阳
Owner BORGWARD AUTOMOTIVE CHINA CO LTD