A Novel Supervisory Control Algorithm to Improve the Performance of a Real-Time PV Power-Hardware-In-Loop Simulator with Non-RTDS

Dae-Jin Kim, Byungki Kim, Hee-Sang Ko, Moon-Seok Jang and Kyung-Sang Ryu
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Dae-Jin Kim: System Convergence Laboratory, Korea Institute of Energy Research, Jeju 63357, Korea
Byungki Kim: System Convergence Laboratory, Korea Institute of Energy Research, Jeju 63357, Korea
Hee-Sang Ko: System Convergence Laboratory, Korea Institute of Energy Research, Jeju 63357, Korea
Moon-Seok Jang: System Convergence Laboratory, Korea Institute of Energy Research, Jeju 63357, Korea
Kyung-Sang Ryu: System Convergence Laboratory, Korea Institute of Energy Research, Jeju 63357, Korea

Energies, 2017, vol. 10, issue 10, 1-16

Abstract: A programmable direct current (DC) power supply with Real-time Digital Simulator (RTDS)-based photovoltaic (PV) Power Hardware-In-the-Loop (PHIL) simulators has been used to improve the control algorithm and reliability of a PV inverter. This paper proposes a supervisory control algorithm for a PV PHIL simulator with a non-RTDS device that is an alternative solution to a high-cost PHIL simulator. However, when such a simulator with the conventional algorithm which is used in an RTDS is connected to a PV inverter, the output is in the transient state and it makes it impossible to evaluate the performance of the PV inverter. Therefore, the proposed algorithm controls the voltage and current target values according to constant voltage (CV) and constant current (CC) modes to overcome the limitation of the Computing Unit and DC power supply, and it also uses a multi-rate system to account for the characteristics of each component of the simulator. A mathematical model of a PV system, programmable DC power supply, isolated DC measurement device, and Computing Unit are integrated to form a real-time processing simulator. Performance tests are carried out with a commercial PV inverter and prove the superiority of this proposed algorithm against the conventional algorithm.

Keywords: photovoltaic; power-hardware-in-loop-simulator; supervisory control algorithm; real-time processing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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