Magnetic suspension counteraction flyback motor control system

The invention relates to a magnetic suspension reaction fly-wheel motor control system, which is mainly composed of a Cuk ascending and descending pressure converter, a permanent magnet brushless direct current motor, a three-phase star type half bridge, a digital controller, an energy consumption unit and other components. The system sends a detected position signal to the digital controller through a position measurement device, and the detected position signal is transformed into a PWM signal through the digital controller and is output to control the transformation ratio of the Cuk ascending and descending pressure converter, and the phase conversion and the speed adjustment of the energy consumption unit and the permanent magnet brushless direct current motor. The magnetic suspension reaction fly-wheel motor control system can carry out ascending and descending pressure conversion to steady direct current power supply voltage and can drive the permanent magnet brushless direct current motor according to rotation speed changes on rear time under the condition that input voltage is not changed, the phase conversion of the permanent magnet brushless direct current motor is controlled by the three-phase star type half bridge, the system dynamic performance is improved through increasing the output force moment factors of the permanent magnet brushless direct current motor and expanding the maximum accelerating moment of a magnetic suspension reaction fly wheel, simultaneously, total power consumption is not increased, and the magnetic suspension reaction fly-wheel motor control system has important application value to aerospace crafts with limited electric energy.