Compensation of load active and reactive power Imbalance by a photovoltaic grid interface inverter for three-phase four-wire distribution networks

Authors

Faculty of Electrical and Computer Engineering, University of Birjand, Birjand, Iran

Abstract

Load balancing is an important issue in distributed systems. In addition, using distributed generation sources such as photovoltaic is increasing. This paper presents a photovoltaic grid interface inverter with compensation of load active and reactive power Imbalance for three-phase four-wire distribution networks. An improved control strategy based on instantaneous active and reactive current component method with variable reference frame in single-phase systems is proposed. Two DC/DC and DC/AC converters have been utilized for connecting PV to the grid. DC/DC converter is responsible for maximum power point tracking (MPPT) and DC/AC converter is responsible for injecting power to the grid as well as balancing load. Using the structure of 3H-bridge converter for grid interface inverter, it is possible to achieve control objectives in three-phase four-wire low voltage distribution networks is provided. The proposed control has been verified by simulation using MATLAB/SIMULINK software and the simulation results indicate the ability of the proposed method to achieve control objectives.

Keywords

References

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TABRIZ JOURNAL OF ELECTRICAL ENGINEERING
Volume 48, Issue 4 - Serial Number 86
February 2018
Pages 1461-1471

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