Shunt active power filter is commonly used to eliminate current harmonics generated in the source side due to presence of non-linear loads. This scheme consists of three phase three level diode clamped multilevel inverter and a DC capacitor that act as a shunt active power filter to mitigate the supply current harmonics and inject the required reactive power to non-linear loads. In this paper, ...

Wind power is one of the optimistic sources of energy generation among all the renewable energy sources. Hence for exploiting wind energy sources it must be connected to electric grid. Wind power inculation into grid affects power quality because of its fluctuating nature. This paper recommends a control scheme based on instantaneous SRF (Synchronous Reference Frame) theory for compensating the...

The power quality (PQ) is a major issue for both electrical utilities and their customers. nonlinear loads cause PQ problems like current harmonics, voltage frequency deviation, sag swell. A unified conditioner (UPQC) utilized in this research to minimize these problems. UPQC made up of two active filters (APFs), one which connected the line series other parallel. Unit Vector Template Generatio...

Power utilization from renewable sources with efficient modules is very vital. Maitaining harmonics below specific standard during grid interconnection also a major objective. A novel five-level voltage source inverter which controlled by synchronous reference frame (SRF) controller for and synchronized power injection. The input of the converter integrated energy photovoltaic arrays (PVA) inje...

The considerable increase in the number of renewable energy sources power systems recent years has led to grid side converters’ connection requirements being more and strict. In order comply with newly arising codes, synchronization unit provide a fast robust response even under unbalanced distorted line voltage. This paper proposes new method for very extraction symmetrical components. uses fi...

Photovoltaic (PV) inverters are now supposed to provide additional supporting services with more reliability and efficiency. This paper presents three different control methods for generating reference current in a multifunctional, multilevel grid-tied PV inverter harmonic, reactive, unbalance compensation. These the synchronous frame (SRF) theory (d-q), instantaneous reactive power (IRP) (p-q)...

Grid-connected converters under weak grid conditions could present instabilityassociated with the synchronization elements and not directly current control loop. The impedance-based stability criterion is an effective tool to address problem. To solve negative effect of synchronous reference frame phase-locked loop (SRF-PLL) on conditions, a structure prefilter, based filtered quadrature signal...

In this study, firstly, a general-purpose test simulator circuit was developed that could the response of circuits used in power electronics on hardware under various operating conditions (hardware loop). next step, control board to be for Shunt Active Power Filters (SPAF) designed. The software SPAF prepared using CubeMX IDE compiler two different harmonic extraction methods instantaneous reac...

This paper presents a thorough control structure of the distributed generators inside microgrid during both grid-connected and islanded operation modes. These structures DGs voltage source inverters are implemented in synchronous reference frame (SRF) controlled using linear PI controllers. By implementing structures, desired real reactive power can be efficiently transferred to local loads uti...