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In view of the problems of poor low-speed performance of the variable - capacitance linear electro static motor under the sine wave - based driving method and the complicated design of the large-scale converter, a driving method based on the square wave is proposed. The stator electrodes are divided into A phase electrodes, B-phase electrodes, and C phase electrodes. Each phase electrode is connected to a square wave drive signal with a magnitude of 1 kV at different timings. The electrostatic force caused by the potential difference between the stator and the mover is used as the driving force of the motor. In order to obtain a compact and efficient power supply and a three-phase square wave with an amplitude of 1 kV, a DC-DC adjustable DC power supply based on a push - pull topology and a drive circuit based on a half bridge are designed. The feasibility of this method is proved by simulation and experiments. At low speeds, the drive waveforms at both ends of the motor are smooth, and the motor can move forward, forward and reverse smoothly. Simulation experiments show that at low speeds, the drive waveforms at both ends of the motor are smooth, and the motor can move forward, forward and reverse smoothly, indicating the feasibility of the proposed method. [ABSTRACT FROM AUTHOR]