Research on Solenoid Magnetic Field Emission Power Supply Based on Double Closed Loop Control
The traditional solenoid coil magnet power supply device consists of separately excited DC motor and its shaft belt engine.Aiming at its shortcoming of slow dynamic response,low steady-state accuracy and poor waveform quality,this paper pro-poses a technical scheme of directly supplying power to spiral pipe coil from program-controlled power source and proposes the con-trol strategy based on output current outer loop and inductor current inner loop that can effectively solve the problem of output volt-age resonance in the LCL circuit composed of output filter circuit and load.The simulation and practical engineering verification show that the spiral tube current using the double closed-loop control strategy of the output current outer loop inductor current inner loop has the advantages of high state accuracy,fast dynamic response,short stability time,and significantly superior waveform qual-ity to the traditional spiral pipe coil magnet power supply device.
solenoid magnetic field emitting power supplyharmonic suppressiondual closed-loop
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