Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply
Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed becaus...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-04-01
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| Series: | Energy Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352484721013135 |
| _version_ | 1818272877826277376 |
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| author | Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen |
| author_facet | Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen |
| author_sort | Jun Zhao |
| collection | DOAJ |
| description | Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed because of the issue or even deadly consequence it may lead. Traditional linear control schemes are powerless to fulfill these two conflicting requirements, especially for the LCC with nonlinear gain characteristics. In this paper, a multi-segment fuzzy control is proposed to tackle this problem. Firstly, the nonlinear gain curve of LCC is piecewise linearized based on its large-signal model, and the control requirements for different segments are determined. Then the control parameters for each part are selected by an off-line fuzzy algorithm. The allowed minimum frequency during the start-up is also piecewise linearized so that the gain ability of LCC is utilized. Finally, the proposed control scheme is verified with an 80kW/150kV X-ray power supply. A low-cost controller is used to implement the start-up control scheme since the control parameters can be pre-calculated and stored in the controller. Compared with the commonly used linear PI control, the non-overshoot start-up time with the proposed control scheme is reduced by more than 60%. |
| first_indexed | 2024-12-12T21:49:03Z |
| format | Article |
| id | doaj.art-a116ea8016594305ab6ee68ff428e93c |
| institution | Directory Open Access Journal |
| issn | 2352-4847 |
| language | English |
| last_indexed | 2024-12-12T21:49:03Z |
| publishDate | 2022-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Reports |
| spelling | doaj.art-a116ea8016594305ab6ee68ff428e93c2022-12-22T00:10:50ZengElsevierEnergy Reports2352-48472022-04-018552559Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supplyJun Zhao0Lianghao Li1Zhenyu Li2Zheng Chen3Long Xiao4Guozhu Chen5College of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, ChinaSchool of Electrical Engineering, Minnan University of Science and Technology, Quanzhou 362700, ChinaCollege of Electrical Engineering, Zhejiang University, Hangzhou 310027, China; Corresponding author.Widely applied in medical, industrial, and military fields, the high-voltage power supply based on LCC resonant converter (LCC) is ought to establish tens kilovolts of output voltage within milliseconds according to many standards. And any overshoot during this start-up process is not allowed because of the issue or even deadly consequence it may lead. Traditional linear control schemes are powerless to fulfill these two conflicting requirements, especially for the LCC with nonlinear gain characteristics. In this paper, a multi-segment fuzzy control is proposed to tackle this problem. Firstly, the nonlinear gain curve of LCC is piecewise linearized based on its large-signal model, and the control requirements for different segments are determined. Then the control parameters for each part are selected by an off-line fuzzy algorithm. The allowed minimum frequency during the start-up is also piecewise linearized so that the gain ability of LCC is utilized. Finally, the proposed control scheme is verified with an 80kW/150kV X-ray power supply. A low-cost controller is used to implement the start-up control scheme since the control parameters can be pre-calculated and stored in the controller. Compared with the commonly used linear PI control, the non-overshoot start-up time with the proposed control scheme is reduced by more than 60%.http://www.sciencedirect.com/science/article/pii/S2352484721013135LCC resonant converterHigh-voltage power supplyOptimized start-upFuzzy algorithmMulti-segment |
| spellingShingle | Jun Zhao Lianghao Li Zhenyu Li Zheng Chen Long Xiao Guozhu Chen Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply Energy Reports LCC resonant converter High-voltage power supply Optimized start-up Fuzzy algorithm Multi-segment |
| title | Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply |
| title_full | Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply |
| title_fullStr | Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply |
| title_full_unstemmed | Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply |
| title_short | Multi-segment fuzzy control for start-up optimizing of LCC-based high-voltage power supply |
| title_sort | multi segment fuzzy control for start up optimizing of lcc based high voltage power supply |
| topic | LCC resonant converter High-voltage power supply Optimized start-up Fuzzy algorithm Multi-segment |
| url | http://www.sciencedirect.com/science/article/pii/S2352484721013135 |
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