Power quality improvement of 1-φ grid integrated pulse width modulated voltage source inverter using hysteresis Current Controller with offset band

Abstract

At present-day scenario, renewable energy sources become a substitute source of energy to reduce environment pollution and future energy demand. Commonly pulse width modulated voltage source inverter is widely used for the interconnecting renewable to the existing grid. For the control of the converter hysteresis current controller is one of the popular control strategies. But hysteresis Current Controller has the drawback of inconsistence switching frequency. In this paper a hysteresis current controller with offset band for single phase grid integrated pulse width modulated voltage source inverter has been implemented. In the conventional hysteresis current controller an offset band is introduced for considerable diminution in switching frequency and better power quality. The MATLAB-Simulink environment is used to model, study and simulate the system.