期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 9, 页码 10920-10932出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3040071
关键词
Transfer functions; Impedance; Stability criteria; Power system stability; Hardware; Analytical models; Mathematical model; Digital real-time simulation; electrical power system; power electronic converter; power hardware-in-the-loop (PHIL); power interface (PI); simulation; system theory
Power hardware-in-the-loop (PHIL) technology allows for testing physical equipment in real-time simulation environment, with the power interface (PI) playing an important role. Various hardware-in-the-loop (HIL) test setups with different PIs are proposed and analyzed to verify stability and accuracy of the PHIL simulation systems through detailed interface modeling and system analysis.
Power hardware-in-the-loop (PHIL) technology allows for the testing of physical equipment in a real-time simulation environment. An important role is attributed to the power interface (PI). This PI connects a power system model, which is implemented on a digital computer, to physical hardware under test, such as a power electronic converter. Several hardware-in-the-loop (HIL) test setups with distinct PIs are proposed and compared. Based on detailed modeling of the different interfaces, system analysis is performed for each HIL test setup with respect to overall stability and accuracy. To verify stability for PHIL simulation systems, transfer function representations of the entire PHIL simulation processes are developed, and all involved time delays are quantified. The Nyquist stability criterion is applied to analyze all considered interfacing methods to enhance PHIL simulation stability, and the accuracy is evaluated. Moreover, experimental test results are given to demonstrate both the applicability and the functioning of the proposed interfacing methods. A particular focus is laid on the interfacing of physical power electronic inverters tested as part of a network in a PHIL real-time simulation.
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