A NEW SOLAR DRIVE SYSTEM APPLIED TO FOUR-SWITCH THREE-PHASE INVERTERS

To reduce the size and cost of the electric drive systems, this paper proposes an electric drive system which is supplied by solar photovoltaics based on a 3-phase 4-switch inverter technology applying 2 hysteresis current controllers. Firstly, the boost dc–dc converter model is proposed and the maximum power point is enforced by adjusting the duty cycle ratio of the boost converter using the incremental conductance method to extract the optimal power from the solar photovoltaics discussed in detail. Secondly, the vector controller for the permanent magnet synchronous motor with pump load is controlled based on power output of the solar photovoltaics. Finally, the proposed system is simulated by MATLAB/Simulink software and the control response is verified through the simulation results.