Current-type power hardware-in-the-loop interface for black-start testing of grid-forming converter

Feng, Zhiwang and Alassi, Abdulrahman and Syed, Mazheruddin Hussain and Pena Alzola, Rafael and Ahmed, Khaled and Burt, Graeme (2022) Current-type power hardware-in-the-loop interface for black-start testing of grid-forming converter. In: 48th Annual Conference of the IEEE Industrial Electronics Society, 2022-10-17 - 2022-10-20, Belgium. (https://doi.org/10.1109/IECON49645.2022.9968517)

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Abstract

Grid-forming converter establishes a stable and controllable voltage at its output terminal without requiring external angle reference, which enables the GFC to be a candidate for providing black start services. However, this attribute poses significant challenges to the conventional power hardware-in-the-loop (PHIL) simulation, which incorporates the physical power converter by regulating its voltage angle to be synchronized with that of an interfacing power amplifier mimicking the real-time emulated power grid. The lack of voltage synchronization at the coupling point of GFC and interfacing power amplifier leads to instability. To address this challenge, the current-type interfacing method with compensation and scaling scheme is proposed to interface a GFC with soft black-start capability into a PHIL setup. Analytical assessment and experimental results involving interfacing a 90 kVA power converter implemented with grid-forming control are presented to verify the methodology.

ORCID iDs

Feng, Zhiwang ORCID logoORCID: https://orcid.org/0000-0001-5612-0050, Alassi, Abdulrahman, Syed, Mazheruddin Hussain ORCID logoORCID: https://orcid.org/0000-0003-3147-0817, Pena Alzola, Rafael, Ahmed, Khaled and Burt, Graeme ORCID logoORCID: https://orcid.org/0000-0002-0315-5919;
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