不同绕组结构的旋转变压器输出电压波形与谐波对比分析

Comparative Analysis of Output Voltage Waveform and Harmonic of Resolvers with Different Winding Structures

旋转变压器的精度是其重要指标之一,绕组分布形式对其输出电压波形的正弦性影响较大,是决定精度的主要因素之一。本文通过有限元分析软件Ansoft Maxwell,对一款旋转变压器进行仿真计算,对比分析双层短距绕组和同心式正弦绕组对旋转变压器输出电压波形正弦性的影响,并进行谐波对比分析,以更形象、直观的方式说明哪种结构的绕组,可以提高旋转变压器的精度,更适合旋转变压器的设计,为旋转变压器的设计提供一定的理论基础。

The accuracy of resolver is one of important indicators. The distribution of windings has a greater influence on the sine of its output voltage waveform, and it is one of the main factors that determine the accuracy. In this paper, a resolver is simulated by finite element analysis software Ansoft Maxwell, to compare and analyze the influence of the double-layer short-distance winding and the concentric sine winding on the sine of the resolver’s output voltage waveform, and to compare and analyze the harmonics. In a more visual and intuitive way to explain which structure of the winding, can improve the accuracy of the rotary transformer, more suitable for the design of the rotary transformer, and provides a certain theoretical basis for the design of the resolver.