Optimal Placement of Distributed Energy Resources in a DC Microgrid with Constant Power Loads to Minimize Bus Voltage Deviations and Line Losses

This paper presents a Lagrange multiplier-based adaptive droop control to mitigate distribution power loss of parallel-connected distributed energy resource (DER) systems in DC microgrids. The distribution power loss comprising line loss and converter loss can be modelled as a quadratic function of the output currents of the DER systems, which can be optimized by the tertiary-layer Lagrange multiplier method to obtain the optimal output current references for the secondary-layer adaptive droop control. The output currents are compensated by the adaptive droop control to provide output voltage references for the primary-layer local dual-loop control, which is a conventional local control scheme for the regulations of gridconnected DC/DC converters. Both simulation and experimental results validate that the proposed control strategy can reduce the distribution power loss of parallel-connected DER systems in 48 V DC microgrids as compared to the conventional control strategy by only optimizing the line loss in different cases.

show abstract

Optimal Placement of Distributed Energy Resources in a DC Microgrid with Constant Power Loads to Minimize Bus Voltage Deviations and Line Losses

Cited by 3 publications

References 28 publications

Control Algorithms for Energy Storage Systems to Reduce Distribution Power Loss of Microgrids

Control Algorithms for Energy Storage Systems to Reduce Distribution Power Loss of Microgrids

Distributed Hierarchical Control for Proportional Current Sharing in PV Systems

Distribution Power Loss Mitigation of Parallel-Connected Distributed Energy Resources in Low-Voltage DC Microgrids Using a Lagrange Multiplier-Based Adaptive Droop Control

Contact Info

Product

Resources

About