Study of the Harmonic Analysis and Energy Transmission Mechanism of the Frequency Conversion Transformer

Author:

Su Zhonghuan,Luo Longfu,Liu Jun,Li Zhongxiang,Luo Hu,Zhao PengORCID

Abstract

Since the transmission distance of submarine cable transmission is inversely proportional to the input frequency, to solve the problem of large losses in the transmission process of offshore wind power, this paper proposes a three-frequency transformer which enables the output of 50 Hz at the input of 50/3 Hz excitation. In this paper, the magnetic flux of a three-dimensional wound core transformer is analytically modeled, the existing condition of magnetic flux harmonics of a three-dimensional wound core transformer is analyzed, the distribution of harmonic content in magnetic flux is obtained, and the principle of realizing frequency conversion is expounded. Secondly, the finite element analysis of the frequency converter is carried out. Finally, a prototype of a frequency transformer is made and tested to verify the correctness of the proposed scheme.

Funder

This research was supported by the Hunan youth talent project of China

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous)

Reference18 articles.

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3. Frequency transmission in the offshore wind power grid application prospects and challenges;Wang;Electr. Power Eng.,2017

4. Challenges in All-DC Offshore Wind Power Plants

5. Electric Field Simulations and Analysis for High Voltage High Power Medium Frequency Transformer

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