Comparison of the Electromagnetic Characteristics of a Novel Gramme Winding and a Concentrated Winding Tubular Permanent-Magnet Linear Generator

Haichao Feng, Jinsong Wei, Jikai Si, Zhiping Cheng, Chun Gan and Xiaozhuo Xu
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Haichao Feng: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
Jinsong Wei: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China
Jikai Si: College of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
Zhiping Cheng: College of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China
Chun Gan: School of Electrical and Electronic Engineering, Huazhong University of Science & Technology, Wuhan 430074, China
Xiaozhuo Xu: School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China

Energies, 2020, vol. 13, issue 22, 1-14

Abstract: A tubular permanent-magnet linear generator is suitable for direct drive wave energy conversion owing to its simple structure, easy maintenance and high efficiency. In this study, a novel Gramme winding tubular permanent-magnet linear generator (GW) is designed to increase power density. First, the structure of the Gramme winding and concentrated winding tubular permanent-magnet linear generator is introduced and the operation principle of the generator is analysed. Second, the initial parameters of GW are determined based on the similar overall dimensions to those of the concentrated winding tubular permanent-magnet linear generator. Third, the air gap flux density, external characteristics, voltage regulation, output power, and loss of the two generators are compared. Finally, the DC load capacities of the two generators are compared based on a three-phase full-control bridge rectifying circuit. The results show that the GW has a higher power density than the latter.

Keywords: tubular permanent-magnet linear generator; Gramme winding; power density; electromagnetic characteristics (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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