Simulating of the cascade control system with forced commutation inverter

摘要

The forced commutation makes that the trigger angle changes between π and 3π/2 so that the inverter absorbs the leading current of the power network. This improves the power factor of the whole system. This paper builds the eight-pulse generator model, the simulating model of the forced commutation inversion bridge, the model of the cascade control system with forced commutation inverter eight-pulse commutation inversion circuit model, and proofs the feasibility of the system. This paper also analyzes the voltage wave and the current wave everywhere of the main circuit at different control angle, puts forward that the forced commutation brings some problems that must be noticed and the setting problem of the relative system parameter.