Research on the Operation and Control Strategy of Onboard Power Supply Converter in DC-grid Hybrid Ship
Through power electric converter and energy storage technology, DC-grid hybrid propulsion plants are becoming an optimal alternative for hybrid ship to improve fuel efficiency, reduce emissions as well as enhance redundancy. This paper introduces the basic structure and operation principle of electr...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Control and Information Technology
2021-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2021.04.006 |
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| Summary: | Through power electric converter and energy storage technology, DC-grid hybrid propulsion plants are becoming an optimal alternative for hybrid ship to improve fuel efficiency, reduce emissions as well as enhance redundancy. This paper introduces the basic structure and operation principle of electric propulsion converter system for a DC-grid hybrid ship. Aiming at multi-operation-mode and control strategy of the onboard daily load power supply converter, a method of positive and negative sequence-dividing control under dq synchronous rotating coordinate is proposed which can ensure that output voltage of the three-phase power supply converter is balanced even with single-phase load, the negative sequence reference is constructed through coordinate transformation without digital low-pass filter. Simulation and experimental results show that compared with the traditional single positive sequence control, the unbalance of the positive and negative sequence-dividing control waveform is from 12% to less than 0.5%, which verifies the correctness and effectiveness of the proposed control strategy. |
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| ISSN: | 2096-5427 |