A microgrid is a proven effective way to integrate renewable resources. This study presents an in... more A microgrid is a proven effective way to integrate renewable resources. This study presents an innovative control concept for decentralized AC microgrids, which is based on the architectural advantage of a radial microgrid structure. Under the proposed concept, power sharing between the distributed sources is achieved without droop control. Thus the need for a secondary control level is eliminated. Moreover, the use of explicit communication is replaced in the paper by a novel coordination mechanism based on the locally measured currents. The paper shows that, with a special design of the current control of grid-feeding converters, the proposed microgrid automatically provides equitable sharing of the load demand amongst the distributed generators (DGs). Moreover, the dynamic responses of the DGs are identical and decoupled from one another. It is further shown that the proposed AC microgrid is stable in the presence of any type of load. The findings of the paper are validated by simulations and laboratory experiments. INDEX TERMS Microgrids, decentralized control, DC-AC power converters, distributed power generation.
Power Line Communication in Emergency Power Microgrid for Mining Industry
2020 IEEE Industry Applications Society Annual Meeting
Emergency Power Microgrids are used in Mining operations to supply critical loads. A robust decen... more Emergency Power Microgrids are used in Mining operations to supply critical loads. A robust decentralised AC microgrid architecture has been recently proposed by the authors, that provides an automatic and equitable load sharing between distributed generators. This paper focuses on Power Line Communication (PLC) within the decentralised AC microgrid, for added flexibility in case of real-time changes in the microgrid structure and/or distributed generation levels. The proposed PLC is based on using a single and constant PLC frequency. The paper details PLC injection, detection and suppression methods, as well as the overall communication logic. Findings of the paper are confirmed by simulations and experimental results.
Development of a PM-Assisted Synchronous Reluctance Motor Drive for an Electric Boat
2020 Australasian Universities Power Engineering Conference (AUPEC), 2020
This paper presents a discussion on Permanent Magnet Assisted Synchronous Reluctance (PMASR) moto... more This paper presents a discussion on Permanent Magnet Assisted Synchronous Reluctance (PMASR) motors and their suitability for electric vehicle applications. The paper describes the methodology and the procedure used for experimental identification of the PMASR motor model. The paper further discusses important aspects of PMASR drive development and presents experimental results. The results shown in the paper illustrate a positive effect of the correct model identification on the drive performance.
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Papers by Dmitry Miller