Phase sequence control method and device based on initial phase identification, and electronic equipment
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: 2021-01-26
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 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 are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of this application.
[0052]It should be noted tha...
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The invention provides a phase sequence control method and device based on initial phase identification, and electronic equipment. The method comprises the steps: controlling a permanent magnet synchronous motor to rotate a first preset angle step by step according to a preset step length, and then return to an electrical zero position step by step; controlling the permanent magnet synchronous motor to rotate a second preset angle step by step according to the preset step length and then return to the electrical zero position step by step, obtaining encoder numerical value increment after eachstep of rotation and encoder numerical value after each time of return to the electrical zero position, calculating an encoder accumulated value according to the encoder numerical value, and calculating phase sequence counting according to the encoder numerical value increment; calculating an encoder numerical value corresponding to the initial electrical angle according to the accumulated valueof the encoder; judging whether the phase sequence is a positive phase sequence or a negative phase sequence according to the phase sequence counting; and if the phase sequence is a negative phase sequence, exchanging the two sampling current values and PWM output signals of the permanent magnet synchronous motor. According to the invention, the phase sequence identification can be carried out while the initial phase identification precision is improved, and the self-adaptive adjustment is carried out based on the phase sequence identification result.
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 relies 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 correctly selected The space vector may cause the motor to overcurrent or reverse. In addition, if the phase sequence of the motor is incorrect, it will also cause reversal or overcurrent, so it is also necessary to find the phase sequence before running the motor.[0003]The initial position identification using the positioning method is simple and effective, but the current initial position i...
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Patent Timeline
Login to View More 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