Research on Novel Harmonic Generator

doi:10.11985/2019.04.003

Abstract

Abstract:

In three-phase and multiple-phase inverters, the harmonics are mainly 6k±1 (k = 1, 2, 3,…). Secondly, the impact of low-order harmonics is the most serious. To solve this problem, a new type of harmonic generator with multi-phase winding circular transformer as the main body is constructed. A harmonic suppression technology based on harmonic generator is proposed. The specific low-order harmonics generated by harmonic generator are induced to the main circuit of the inverting system by the electromagnetic theory to suppress the harmonics in the equipment. The function of harmonic generator is to generate specific low-order harmonics, and it does not participate in the conversion and transmission of active power. It can effectively reduce the capacity and volume of the device, and also reduce the working frequency of the main switch. The working principle of the harmonic generator is deduced theoretically and the effectiveness of the device is verified by simulation and experiment.

Key words: Harmonic generator, round transformer, harmonic elimination, inverter system

CLC Number:

TM561

Bingfeng ZHANG,Tiejun WANG,Jianren PENG,Zhibin ZHANG,Keyue NIU. Research on Novel Harmonic Generator[J]. Journal of Electrical Engineering, 2019, 14(4): 18-25.

Figures/Tables 19

References 18

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参数	数值	参数	数值
基波频率f/Hz	50	绕组线圈漏感L_l/H	0.001
直流母线电压U/V	25	负载电阻r_r/Ω	50
绕组线圈内阻r_s/Ω	0.15	负载电感L_L/H	0.095
绕组线圈电感L/H	0.01	功率因数$cos\varphi$	0.8