Double-bridge-structure based magnetic bearing electromagnetic pole magnetic force control circuit
A magnetic levitation bearing and magnetic force control technology, applied in the direction of high-efficiency power electronic conversion, control/regulation system, electrical components, etc., can solve problems such as high real-time requirements, bus voltage short circuit fault, complex control circuit, etc., to solve the problem of bus voltage instantaneous Potential for short-circuit faults and reduced on-off loss
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[0101] Embodiment 1: as Image 6 , a magnetic suspension bearing electromagnetic pole magnetic force control circuit based on a double bridge structure, adopts a main circuit with a double bridge structure, and the main circuit includes 2 power switching devices and 2 diodes: a first power switching device (Q1), a second power switching device (Q1), Two power switching devices (Q2), a first diode (D1) and a second diode (D2);
[0102] The first power switching device and the second diode form a first bridge arm, and the second power switching device and the first diode form a second bridge arm;
[0103] In the first bridge arm, the first terminal of the first power switching device (Q1) is connected to the positive pole of the DC power supply (VDD); the second terminal of the first power switching device is the control terminal, which is connected to the control signal HIN, and the first power The third terminal of the switching device is connected to the negative pole of the...
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