Method, system and device for realizing off-line identification processing for rotor time constant, processor and storage medium thereof
A rotor time constant and processor technology, applied in control systems, vector control systems, control electromechanical transmissions, etc., can solve the problems of cumbersome experimental steps and inability to directly obtain measurement results, etc., and achieve the effect of simple operation and easy programming
Pending Publication Date: 2022-03-11
SHANGHAI WEIHONG ELECTRONICS TECH +2
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Since two experiments are required to identify and finally calculate the measured rotor time constant, the experimental steps will be cumbersome and the measurement results cannot be directly obtained
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[0028] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0029] The method for realizing the offline identification processing of the rotor time constant in the present invention includes the following steps:
[0030] (1) Select two moments t′ 1 and t' 2 , the motor is unloaded;
[0031] (2) The driver is enabled and the speed is 0, after t' 1 Time to give the speed command to the driver as S 1 , record the value i when the q-axis current is maximum sq1 and the time t that the current takes from enabling to the maximum value 1 ;
[0032] (3) According to t' 2 Time repeat step (2), record t′ 2 The value i when the q-axis current is at its maximum under time sq2 and the time t that the current takes from enabling to the maximum value 2 ;
[0033] (4) Calculate the rotor time constant T r .
[0034] As a preferred embodiment of the present invention, ca...
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The invention relates to a method for realizing off-line identification processing aiming at a rotor time constant, which comprises the following steps of: selecting two moments t '1 and t' 2, and enabling a motor to be no-load; the driver is enabled and the speed is 0, a speed command given to the driver after t '1 time is S1, and the value isq1 when the q-axis current is maximum and the time t1 when the current is enabled to the maximum value are recorded; repeating the step (2) according to the t '2 time, and recording the value isq2 when the q-axis current is maximum at the t' 2 time and the time t2 of the current from enabling to the maximum value; and calculating a rotor time constant Tr. The invention also relates to a system and a device for performing offline identification processing on the rotor time constant, a processor and a computer readable storage medium. By adopting the method, the system, the device, the processor and the computer readable storage medium for realizing the off-line identification processing on the rotor time constant, the rotor time constant is calculated through the current and the time when the motor is started, the operation is simple, and the programming is easy to realize.
Description
technical field [0001] The present invention relates to the field of asynchronous motors, in particular to the field of identification of intrinsic parameters of motors, and specifically refers to a method, system, device, processor and computer-readable storage medium for realizing offline identification processing for rotor time constants. Background technique [0002] At present, the control algorithm used in the AC asynchronous motor drive system is mainly the field-oriented control algorithm (FOC). In the process of indirect field orientation, the parameters used to calculate the field orientation angle, especially the rotor time constant, will become very important. The existing motor parameter estimation includes offline parameter identification and online parameter identification. Generally, the motor parameter identification of general-purpose controllers is a traditional offline identification method, and the motor parameters are identified through stall experiments...
Claims
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IPC IPC(8): H02P21/16H02P25/02
CPCH02P21/16H02P25/02H02P2207/01
Inventor 齐太安陈令云杜全营
Owner SHANGHAI WEIHONG ELECTRONICS TECH