Dead-beat Control of Mechanical Inverters in Distributed Photovoltaic Power Plant
Dead-beat control can effectively reduce power fluctuations and voltage harmonics between the power grid and invert-er,and improve the generation efficiency and power grid stability of photovoltaic power plant.Therefore,a distributed photo-voltaic power plant mechanical inverter dead-beat control is proposed.On the basis of ensuring that the output current operates at the equilibrium point,this paper calculates the average output current of the distributed photovoltaic power plant.A relative-ly stable power expression is obtained by combining the calculation results of average output voltage and average output cur-rent.By controlling the voltage and frequency of the mechanical inverter,the Taylor formula is used to calculate the next sam-pling period to achieve dead-beat control of the mechanical inverter.The experiment shows that the harmonic distortion rate of the proposed method is below 0.01,which can accurately control the mechanical inverter and ensure the stable operation of the photovoltaic power plant.
distributed photovoltaic power plantmechanical inverterdead-beat controlDC busharmonic distortion
万方数据
维普
