A method for controlling the magnetic force of the electromagnetic pole of a magnetic suspension bearing based on a double-bridge structure
A magnetic bearing and magnetic control technology, applied in control/regulation systems, high-efficiency power electronic conversion, electrical components, etc., can solve problems such as high real-time requirements, bus voltage short-circuit faults, complex control circuits, etc., to solve the instantaneous bus voltage Short-circuit fault hidden danger, the effect of reducing the on-off loss
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[0104] Embodiment 1: as Image 6 , a method for controlling the magnetic force of magnetic suspension bearing electromagnetic poles based on a double bridge structure, the power supply circuit of the magnetic suspension bearing electromagnetic poles adopts a main circuit with a double bridge structure, and the main circuit includes 2 power switching devices and 2 diodes: the first power a switching device (Q1), a second power switching device (Q2), a first diode (D1) and a second diode (D2);
[0105] 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;
[0106] 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 termin...
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