Research on Passivity-Based Control of Three-Phase Voltage PWM Rectifier with Constant Power Load

Aiming at the problem that the three-phase voltage source PWM rectifier with constant power load may lead to instability, this paper adopts the passive-based control strategy of the three-phase voltage source PWM rectifier. This strategy establishes the EL model of the three-phase voltage source PWM rectifier with constant power load and designs the passive-based controller. At the same time, a power observer is introduced to observe the unknown power in the actual project in real time. The simulation results show that compared with the PI controller and the outer PI inner loop passive-based control strategy, the control strategy proposed in this paper has strong dynamic and steady-state performance, which proves the feasibility of the proposed control strategy.