Design of Improved Three-loops Control for Inverter Based on DSP

Aimed at the voltage wave distortion of inverter and the reduction of output voltage magnitude under the heavy load,a design of the inverter power supply was introduced,which uses the new improved three-loop control with the capacitance inductance current inner loop,the capacitance inductance voltage middle loop,the capacitance voltage effective value outer loop.By applying high performance digital signal processor,the digital closed-loop control of the inverter in the circuit is achieved.The simulation and experiment results are given finally.The experiment results are compared with simulation results,which prove the digital control inverter system has a good control performance and achieves expected results.