Analytical Modeling of Inverter System of Linear Phase Shift Transformer

doi:10.11985/2019.03.008

Abstract

Abstract:

The working principle of 12-phase multi-overlap plus inverters based on linear phase-shifting transformer is briefly introduced. The advantages of linear phase-shifting transformer compared with traditional phase-shifting transformer are analyzed and compared. The mathematical model of the inverting system is established and the detailed derivation process of the relevant parameters is given. The specific solution process is completed by Matlab. The results of calculation and analysis show that the waveform of this new 12-phase multi-overlap plus inverter is of good quality and can basically meet the requirements of power conversion. Finally, the feasibility of theoretical and simulation analysis is verified by experiments, which provides a strong support for the follow-up prototype optimization.

Key words: Inversion, multiple overlap plus, linear, harmonic

CLC Number:

TM422

ZHANG Ziming,ZHAO Jinghong,MA Yuanzheng,XU Hao. Analytical Modeling of Inverter System of Linear Phase Shift Transformer[J]. Journal of Electrical Engineering, 2019, 14(3): 54-60.

Figures/Tables 15

References 18

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传统移相变压器	直线式移相移相变压器
匝数比非整数时,无法实现精确匝数比	可实现精确匝数比
对于设计好的移相变压器,移相角度单一	可实现任意角度移相
绕线复杂,加工难度大	绕组结构简单,绕线简洁
不便于拓展,气隙磁场难以控制	直线式结构气隙磁场易于调节,同时便于拓展

气隙/mm	A相谐波	B相谐波	C相谐波	变压器效率
0	4.36	2.51	3.74	91.9
0.1	4.07	2.36	3.52	92.2
0.2	3.89	2.26	3.36	93.5
0.3	3.71	2.18	3.23	94.5
0.4	3.64	2.12	3.15	89.3
0.5	3.56	2.08	3.07	88.7
0.8	3.40	2.00	2.91	89.0
1.0	3.33	2.00	2.90	89.0

齿槽对齐方式	磁路磁阻	漏磁通	谐波分量(%)	变压器效率(%)
齿齿对齐	小	小	3.04	94.5
互错1/4d	中	中	2.83	88.6
互错1/2d	大	大	2.50	81.7

具体参数指标	设计参考值
输出功率/ W	1000
输出相电压/ V	200
槽间距/ mm	18
铁心长度/ mm	216
铁心高度/ mm	40
初级侧与次级侧气隙/ mm	0.3
铁心叠加厚度/ mm	100
初级侧槽数	12
初级侧绕组分布	整距
次级侧槽数	12
次级侧绕组分布	长距与短距结合