A new methodology for investigation of voltage stability and total harmonic distortion of distributed hybrid generator based on wind and pv system is proposed. In this scheme, the sources are connected to the grid through standalone step-up converter followed by an inverter. Thus, compared to earlier schemes, the proposed scheme has fewer power converters. The prototype of the Simulink model is developed in d-q axes reference frame. The suggested scheme not only generates and step-up the dc voltage but also transforms the generated dc power into a higher quality of ac power with the help of SVPWM inverter. Furthermore, to enhance the quality of power and stability of the overall PV system integrated with the grid, a transient current limiter for limiting the transient has been incorporated in the system. The suggested model is tested on MATLAB / Simulink environment and the result shows its superiority over other existing methods.

提出了一种基于风电系统的分布式混合发电机电压稳定性和总谐波畸变研究的新方法。在该方案中，源通过独立的升压转换器和逆变器连接到电网。因此，与早期方案相比，所提出的方案具有更少的功率转换器。Simulink模型的原型是在dq轴参考系中开发的。所建议的方案不仅可以产生和升压直流电压，还可以借助SVPWM逆变器将产生的直流电源转换为更高质量的交流电源。此外，为了提高与电网集成的整个光伏系统的功率质量和稳定性，已在系统中集成了用于限制瞬态的瞬态电流限制器。