Research and analysis of the improved inverse-droop control strategy for dual mode inverters in micro grid
Research and analysis of the improved inverse-droop control strategy for dual mode inverters in micro grid
- Author(s): Chunxue Wen and Jiaoxin Jia
- DOI: 10.1049/cp.2016.1185
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- Author(s): Chunxue Wen and Jiaoxin Jia Source: 2016 Tsinghua University-IET Electrical Engineering Academic Forum, 2016 page ()
- Conference: 2016 Tsinghua University-IET Electrical Engineering Academic Forum
- DOI: 10.1049/cp.2016.1185
- ISBN: 978-1-78561-417-0
- Location: Beijing, China
- Conference date: 13-15 May 2016
- Format: PDF
In this paper, the control strategy of the dual mode inverter is analyzed firstly. In island operation, inverter uses the improved inverse droop control. Furthermore, in grid-connected operation, the inverter is controlled by the power and current double loop. Then, the inverter smooth switching control method to/from grid-connected and islanded modes is designed in this paper. The switching method proposed by this paper is simple and easy to implement. Finally, the basic inverse droop control and improved inverse droop control method are simulated in the power system simulation software DigSILENT/Power-Factory. The simulation results show that the improved inverse droop control can control the voltage and frequency of the system more effectively, and the modes switching process using the improved inverse droop control is smoother than using the basic inverse droop control. Therefore, the research and analysis of the proposed control strategy verifies its correctness.
Inspec keywords: distributed power generation; invertors; frequency control; voltage control; power system simulation; control engineering computing
Subjects: Power engineering computing; Frequency control; Control engineering computing; DC-AC power convertors (invertors); Control of electric power systems; Distributed power generation; Voltage control
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