一种新型谐波发生器研究 *

doi:10.11985/2019.04.003

摘要/Abstract

摘要：

在三相及其倍数相逆变系统中谐波主要为6k±1(k=1,2,3,…)次,其中低次谐波影响最为严重。针对此问题构造了一种以多相绕组圆形变压器为主体的新型谐波发生器,提出基于谐波发生器的谐波抑制技术,应用电磁理论把谐波发生器生成的特定低次谐波通过圆形变压器感应到逆变系统主电路来抑制设备中的谐波。谐波发生器功能为产生特定低次谐波,不参与有功功率转换与传递,可以有效减小装置容量和体积,同时降低主开关管工作频率。理论推导了该谐波发生器的工作原理,仿真及试验验证了装置的有效性。

关键词: 谐波发生器, 圆形变压器, 谐波消除, 逆变系统

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

中图分类号:

TM561

张兵锋,王铁军,彭见仁,张志斌,牛可悦. 一种新型谐波发生器研究 ^*[J]. 电气工程学报, 2019, 14(4): 18-25.

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.

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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