Wind, a renewable energy source becomes a key contributor to our modern society, but there are some challenges. They are: 1. Voltage and frequency fluctuations are caused by non-controllable variability of wind energy generation. 2. Harmonics, which are caused due to power electronic devices. Maximum Power Point Tracking (MPPT) algorithms to achieve maximum power under all-weather situations. The paper consists of existing approaches to improve power quality. Four leg inverter is used to inject the available energy and also work as active power filter, decreasing load current disturbances and improving power quality. A four-wire system is introduced here, with three-phase and singe-phase linear and nonlinear loads. The utility side controller is designed, to compensate the disturbances caused in presence of reactive, unbalanced or nonlinear loads. This controller design also provides active and reactive power as required. DC link capacitor is used for continuous supply of wind energy to the grid. This paper mainly deals with proposed technology over existing one. Conservative Power Theory involved in the proposed technology. This provides decoupled power and current references for inverter control. This also offers flexible, selective and powerful functionalities