Phase sequence control method, device, and electronic equipment based on initial phase identification
A technology of initial phase and phase sequence, applied in the direction of controlling electromechanical transmission, controlling generator, controlling electromechanical brake, etc., can solve the problems of fixed position deviation and inaccurate initial position, etc.
Active Publication Date: 2021-03-23
JIHUA LAB
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Problems solved by technology
[0003] Using the positioning method to identify the initial position is simple and effective, but the current initial position identification of the positioning method is likely to cause a fixed position deviation, resulting in an inaccurate initial position
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[0051]The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.
[0052] It should b...
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The invention provides a phase sequence control method, device, and electronic equipment based on initial phase identification. By repeatedly executing the steps: controlling the permanent magnet synchronous motor to rotate the first preset angle step by step with a preset size and then return step by step Electrical zero position, and control the permanent magnet synchronous motor to rotate the second preset angle step by step with a preset size and return to the electrical zero position step by step, obtain the encoder value increment after each step rotation and return to the electrical zero each time The encoder value after the position, calculate the accumulated value of the encoder according to the value of the encoder, calculate the phase sequence count according to the incremental value of the encoder; calculate the value of the encoder corresponding to the initial electrical angle according to the accumulated value of the encoder; judge the phase sequence according to the phase sequence count Whether it is positive phase sequence or negative phase sequence; if the phase sequence is negative phase sequence, the sampling current value and PWM output signal of the two permanent magnet synchronous motors are exchanged; while the initial phase identification accuracy can be improved, the phase sequence identification can be carried out based on The phase sequence identification results are adaptively adjusted.
Description
technical field [0001] The invention relates to the technical field of permanent magnet synchronous motor control, in particular to a phase sequence control method, device and electronic equipment based on initial phase identification. Background technique [0002] In the servo control system, the high-performance control of the permanent magnet synchronous motor depends on the precise rotor position, and obtaining the initial position of the rotor is the prerequisite for the smooth start of the motor. If the initial position of the rotor cannot be accurately detected, the appropriate voltage cannot be selected correctly Space vector, it may cause overcurrent or reverse rotation of the motor. In addition, if the phase sequence of the motor is incorrect, it will also cause reverse rotation or overcurrent, so it is also necessary to check the phase sequence before running the motor. [0003] Using the positioning method to identify the initial position is simple and effective...
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IPC IPC(8): H02P6/16H02P21/18H02P21/32H02P27/12
CPCH02P6/16H02P27/12H02P2203/03H02P21/18H02P21/32
Inventor 罗凌云王宏邓锦祥马青林
Owner JIHUA LAB