Zhongping Yang

TL;DR: In this paper, a control method of a three-phase voltage type PWM rectifier under unbalance voltage of a power grid, relates to the technical field of power electrons.

TL;DR: In this article, a module combined multi-level converter (MCMC) was proposed for energy conversion systems of medium-high voltage high-power occasions, which can be applied to an energy conversion system of medium high voltage high power occasions.

TL;DR: In this paper, a weak magnetic control method for a permanent magnet synchronous motor is presented, where direct axis current instructions are obtained through a motor rotating speed regulator; and instruction values of motor alternating axis voltage are obtained by calculation through the direct axis voltage instruction value output by a motor direct axis currents regulator and the maximum voltage value output of an inverter, and the motor voltage is guaranteed to reach the maximum value at the weak magnetic interval.

TL;DR: In this article, a controller transforms an input current and an input voltage of an alternating current-direct current (AC-DC) transformation device into a current and a voltage in a rotating coordinate system by dq coordinate transformation.

TL;DR: In this article, the authors characterized a topological structure for an L-shaped booster converter, where a cross shaft of the converter is formed by serially connecting k controllable switches (S11, S21to Sk1), and a longitudinal shaft of a Lshaped converter is made of k capacitors (C1,C2 to Ck); one end of the controllables switch (Sk1) is connected with the anode of a power supply through an inductor (LA), and circuits are arranged between the cathode of the power supply and nodes