Simulation of wind power with front-end converter into interconnected grid system

In the growing electricity supply industry and open access market for electricity worldwide, renewable sources are getting added into the grid system. This affects the grid power quality. To assess the impact on grid due to wind energy integration, the knowledge of electrical characteristic of wind turbine and associated control equipments are required. The paper presents a simulation set-up for wind turbine in MATLAB / SIMULINK, with front end converter and interconnected system. The presented control scheme provides the wind power flow to the grid through a converter. The injected power in the system at the point of common coupling is ensured within the power quality normsPeer Reviewe

Simulation of wind power with front-end converter into interconnected grid system

In the growing electricity supply industry and open access market for electricity worldwide, renewable sources are getting added into the grid system. This affects the grid power quality. To assess the impact on grid due to wind energy integration, the knowledge of electrical characteristic of wind turbine and associated control equipments are required. The paper presents a simulation set-up for wind turbine in MATLAB / SIMULINK, with front end converter and interconnected system. The presented control scheme provides the wind power flow to the grid through a converter. The injected power in the system at the point of common coupling is ensured within the power quality norm

Dual Stage Single-Phase to Multiphase Matrix Converter for Variable Frequency Applications

A single-stage matrix converter (MC) is preferred for the conversion of a single-phase (1) supply of fundamental frequency (50 Hz) to the multiphase (m) power supply in a limited operating frequency range (5-15 Hz). These converters possess a limitation on account of voltage and current distortions when the converter is used up to fundamental or higher frequency operating loads. To resolve this problem, this letter proposes a dual-stage 1\emptyset\to\m\emptyset MC, which ensures improved power quality across the output voltage and current. This converter has a three-leg front-end side rectifier stage (RS) consisting of six numbers of common emitter configured bidirectional power semiconductor switches. A filter circuit is installed in between 1\emptyset supply and RS enabling to build positive average dc voltage across the virtual dc link while maintaining the source current profile. The second stage is an inversion stage having a conventional voltage source inverter structure. The proposed dual-stage MC topology is having a simple structure with the ability to convert the 1\emptyset supply to any number of desired output phases not only at the lower frequency but also at the fundamental and higher frequency. The practical applicability of the proposed dual-stage MC is validated through experimental results. 1986-2012 IEEE.This work was supported by DST-SERB, India, underGrant EMR/2016/007657.Scopu

Performance Comparison of PWM Schemes of Dual-inverter FED Five-phase Motor Drives

The dual-inverter fed open-end winding configuration can be categorized as a new breed of multi-level converters. The structure is simple and offers a lot of advantages. However, the development of suitable PWM schemes is more complicated, due to the availability of a large number of switching states and existence of the multiple two-dimensional planes. An overview of attempts to develop suitable modulation techniques for the dual-inverter fed five-phase machine drives recognizes that progress has been made over the past few years. This paper presents a performance comparison of three PWM schemes of the dual-inverter fed five-phase, open-end winding motor drives. The quality of the phase output voltages are compared and the adequate analyses are provided. The simulation results show that the Carrier Based Phase Disposition (PD) PWM scheme enables generation of the most excellent output voltage among the three PWM schemes. The Total Harmonics Distortion (THD) of the output voltages generated by the carrier based PWM scheme reduces by 65% and 15% on average compared to the THD of the output voltages produced by the URS PWM scheme and the decomposition PWM scheme respectively