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Energies 2017, 10(9), 1428; https://doi.org/10.3390/en10091428

Super Capacitor Energy Storage Based MMC for Energy Harvesting in Mine Hoist Application

1
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
2
Tianshui Electric Drive Research Institute Co. LTD, Tianshui 741020, China
*
Author to whom correspondence should be addressed.
Received: 23 August 2017 / Revised: 10 September 2017 / Accepted: 13 September 2017 / Published: 17 September 2017
(This article belongs to the Special Issue Decentralised Energy Supply Systems)
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Abstract

This paper proposes a super capacitor energy storage-based modular multilevel converter (SCES-MMC) for mine hoist application. Different from the conventional MMCs, the sub-modules employ distributed super capacitor banks, which are designed to absorb the regenerative energy of mine hoist and released in the traction condition, so as to improve energy utilization efficiency. The key control technologies are introduced in detail, followed by analysis of the configuration and operation principles. The feasibility of the proposed SCES-MMC topology and the control theory are also verified. Simulation results show that SCES-MMC can adapt to the variable frequency speed regulation of the motor drive, which shows good application prospects in the future for medium- and high-voltage mine hoist systems. View Full-Text
Keywords: super capacitor energy storage (SCES); modular multilevel converter (MMC); mine hoist; state of charge; regenerative energy; energy harvesting super capacitor energy storage (SCES); modular multilevel converter (MMC); mine hoist; state of charge; regenerative energy; energy harvesting
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yang, X.; Wen, P.; Xue, Y.; Zheng, T.Q.; Wang, Y. Super Capacitor Energy Storage Based MMC for Energy Harvesting in Mine Hoist Application. Energies 2017, 10, 1428.

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