Excitation control method and device used in starting process of aeronautical tertiary brushless AC synchronous motor
An AC synchronous motor, starting process technology, applied in the control system, control generator, electrical components and other directions, can solve the problem of affecting the load capacity of the main generator, the fluctuation of the main generator rotor flux linkage, and the inability to effectively exert the excitation of the exciter. output capacity, etc.
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[0048] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:
[0049] The excitation control method of the aviation three-stage brushless AC synchronous motor starting process in this embodiment ( figure 2 ):
[0050] The principle block diagram of the inventive method is as figure 2 As shown, the modulation degree of the AC excitation component is determined by the motor speed ω r Determined, the modulation degree of the DC excitation component is determined by the rated excitation current i of the exciter * and the actual excitation current i are adjusted by the PI regulator, and its adjustment upper limit M Dmax The degree of modulation M by the AC excitation component A It is determined that the finally obtained AC / DC excitation output is synthesized according to the modulation algorithm proposed by the present invention, and the variable value for controlling the H-bridge inverter is obtained to realize the excita...
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