Method and device for determining iron loss of permanent magnet synchronous motor
A permanent magnet synchronous motor, iron loss technology, applied in the direction of motor parameter estimation/correction, can solve the problems of low accuracy, large error, long time, etc., achieve less online calculation, real-time determination, high accuracy Effect
Active Publication Date: 2022-03-22
SAIC MOTOR
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Problems solved by technology
[0005] However, both of these approaches have certain drawbacks
The calculation amount of the first processing method is huge, and it will take a long time accordingly. Therefore, it is difficult to calculate the iron loss of the permanent magnet synchronous motor in real time.
The second processing method will have a large error and low accuracy
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[0046] The present application provides a method and device for determining the iron loss of a permanent magnet synchronous motor, which can determine the iron loss of a permanent magnet synchronous motor in real time, and the calculation result has high accuracy.
[0047] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0048] see figure 1 , figure 1 It is a flowchart of a method for determining the iro...
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The present application discloses a method for determining the iron loss of a permanent magnet synchronous motor, including: determining the current operating point of the permanent magnet synchronous motor; according to the pre-built operating point and equivalent iron loss impedance of the permanent magnet synchronous motor The corresponding relationship between them, determine the equivalent iron loss impedance value corresponding to the current working point of the permanent magnet synchronous motor; obtain the direct axis voltage and the quadrature axis voltage of the permanent magnet synchronous motor; according to the direct axis voltage of the permanent magnet synchronous motor The iron loss of the permanent magnet synchronous motor is determined by using the voltage, the quadrature axis voltage, and the equivalent iron loss impedance value corresponding to the current operating point of the permanent magnet synchronous motor. Based on the method disclosed in the present application, the iron loss of the permanent magnet synchronous motor can be determined in real time, and the calculation result has high accuracy.
Description
technical field [0001] The application belongs to the technical field of motor parameter measurement, and in particular relates to a method and device for determining the iron loss of a permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motor is an important type of motor, which is a synchronous motor that generates a synchronous rotating magnetic field by excitation of permanent magnets. [0003] In order to ensure the stable operation of the permanent magnet synchronous motor, it is necessary to perform power management and thermal management for the permanent magnet synchronous motor. In the power management and thermal management of the permanent magnet synchronous motor, the iron loss of the permanent magnet synchronous motor is an important parameter. If the calculation of the iron loss of the permanent magnet synchronous motor deviates, it will lead to the power management of the permanent magnet synchronous motor. There is...
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IPC IPC(8): H02P23/14
CPCH02P23/14
Inventor 武四辈王东萃伍宇飚张霄霄陆建国
Owner SAIC MOTOR