PROJECT TITLE :
Simultaneous Microgrid Voltage and Current Harmonics Compensation Using Coordinated Control of Dual-Interfacing-Converters - 2016
The growing installation of distributed generation (DG) units in low-voltage distribution systems has popularized the concept of nonlinear load harmonic current compensation using multifunctional DG interfacing converters. It is analyzed during this paper that the compensation of native load harmonic current employing a single DG interfacing converter might cause the amplification of supply voltage harmonics to sensitive hundreds, significantly when the main grid voltage is very distorted. To deal with this limitation, not like the operation of standard unified power quality conditioners with series converter, a brand new simultaneous provide voltage and grid current harmonic compensation strategy is proposed using coordinated management of 2 shunt interfacing converters. Specifically, the primary converter is accountable for local load provide voltage harmonic suppression. The second converter is used to mitigate the harmonic current created by the interaction between the primary interfacing converter and the local nonlinear load. To understand a easy control of parallel converters, a changed hybrid voltage and current controller is also developed in the paper. By using this proposed controller, the grid voltage part-locked loop and also the detection of the load current and the supply voltage harmonics are unnecessary for both interfacing converters. Thus, the computational load of interfacing converters can be considerably reduced. Simulated and experimental results are captured to validate the performance of the proposed topology and therefore the management strategy.
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