Method for eliminating peak value during running of single phase direct-current brushless motor
A brushless DC motor, a technology in operation, used in the control of generators, emergency protection circuit devices for limiting overcurrent/overvoltage, motor generator control, etc., can solve the problem that single-phase brushless DC motors cannot eliminate peaks and other problems to achieve the effect of eliminating peaks and reducing electromagnetic interference noise.
Active Publication Date: 2013-11-06
DONGGUAN JUNKAI ELECTRONICS
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[0003] The purpose of the present invention is to solve the problem that the existing single-phase brushless DC motor cannot eliminate the peak value, and provide a method for eliminating the peak value in the operation of the single-phase brushless DC motor
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[0011] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.
[0012] First, if figure 1 As shown, the method for eliminating the peak value in the operation of the single-phase brushless DC motor in the present invention is to arrange two HALL ICs along the periphery of the stator silicon steel sheet 2 on the motor circuit board 1, wherein one HALL IC 3 is located at the edge of the stator silicon steel sheet 2 At the highest end position, the other HALL IC4 is located at the high end position of the stator silicon steel sheet 2, so that an angle difference a is formed between the two HALL ICs. Due to the existence of the angle difference a, there is a time difference between the two HALL ICs when sensing signals. Using this angle The delay time formed by the difference, the discharge circuit set on the circuit board 1 and connected to the two HALL ICs releases the energy of the wire package, thereby eliminat...
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The invention belongs to the technical field of single phase direct-current brushless motors and in particular relates to a method for eliminating a peak value during the running of a single phase direct-current brushless motor. The method comprises the following steps of: arranging two HALL ICs (Integrated Circuits) at the periphery of a stator silicon steel sheet on a motor circuit board, wherein one HALL IC is positioned at the upmost end of the stator silicon steel sheet, and the other HALL IC is positioned at the secund high-end of the stator silicon steel sheet, therefore, an angle difference is formed between the two HALL ICs; and releasing coil energy by utilizing the delay time formed by the angle difference and through discharge circuits arranged on the circuit board and connected with the two HALL ICs so as to eliminate the peak value in the single phase direct-current brushless motor. After the technical scheme is adopted, the delay time is formed through the angle difference between the two HALL ICs, and the coil energy is first released at the instant of magnetic pole switching by utilizing the DELAY time, therefore, the peak value during the running of the single phase direct-current brushless motor is eliminated, the interference noise is reduced, and meanwhile, the start shaking problem can also be solved.
Description
Technical field: [0001] The invention belongs to the technical field of single-phase DC brushless motors, in particular to a method for eliminating the peak value in the operation of single-phase DC brushless motors. Background technique: [0002] Existing single-phase brushless DC motors usually use a single HALL IC. This method cannot eliminate the peak value (Vpk value) at both ends of the line package generated by the high-speed and high-power single-phase brushless DC motor during operation. When the brushless DC motor is running at high speed, the peak value generated on the line package cannot be released in time to form a peak value, and the components driving the line package (that is, the power tube) have the maximum voltage they can withstand, which will cause the component to be damaged. damage. Invention content: [0003] The purpose of the present invention is to solve the problem that the existing single-phase DC brushless motor cannot eliminate the peak va...
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IPC IPC(8): H02P21/14H02H9/04H02P6/10
Inventor 郑早平
Owner DONGGUAN JUNKAI ELECTRONICS