This paper presents a permanent magnet synchronous motor (PMSM) driven satellite reaction wheel, its DC-link voltage is boostable in accordance with wheel speed to yield good winding current tracking control under wide speed range. The digital controls of all power stages are realized in a common digital signal processor (DSP). First, the PMSM driven reaction wheel is
established. In its current controlled PWM scheme, the PI feedback controller is augmented with a speed adaptive resonant controller and a robust tracking error cancellation controller to yield precise sinusoidal winding current command tracking. That followed a simple robust model following speed control scheme is designed.
Then a DC/DC boost front-end converter is developed to establish boostable and well-regulated DC-link voltage from the fluctuated photovoltaic DC source. The speed-dependent DC-link voltage is set to obtain good wheel driving performance under wide speed range and varied DC source voltage. In addition, the chopping dynamic braking mechanism is also equipped to yield stable braking operation.