| 磁阻旋转变压器等效电路及原边反射误差分析 |
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| 引用本文： | 刘德超,熊建.磁阻旋转变压器等效电路及原边反射误差分析[J].微电机,2022,0(7):19-23+44. |
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| 作者姓名： | 刘德超 熊建 |
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| 作者单位： | (1.北汽福田汽车股份有限公司,北京 102206; 2.北汽福田汽车股份有限公司,北京 102206) |
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| 摘 要： | 磁阻式旋转变压器因其结构简单和高可靠性，在新能源汽车主驱电机系统中已有越来越多的应用。在磁阻式旋转变压器的应用中，旋转变压器一般被考虑为一个变比可变的理想变压器，然后根据解码原理，分析解码误差。但是在实际应用中，旋转变压器的励磁、正余弦信号均需通过一定电路进行处理，旋转变压器自身在电路中的实际表现也会引入解码误差，这就需要我们对旋转变压器进行精确的建模，以分析其在电路中的实际负载效应。本文首先介绍了磁阻式旋转变压器的基本原理，然后详细分析了其励磁、信号绕组的自感、互感，并使用励磁绕组、信号绕组的自感、互感导出旋转变压器的等效电路，最后在此等效电路基础上分析旋转变压器与其接入的电路共同引起的解码误差，为旋转变压器的应用电路设计提供依据。
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| 关 键 词： | 磁阻旋转变压器 等效电路 解码误差 反射阻抗 |
Reluctance resolver equivalent circuit and analysis of primary side reflection error |
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| LIU Dechao,XIONG Jian.Reluctance resolver equivalent circuit and analysis of primary side reflection error[J].Micromotors,2022,0(7):19-23+44. |
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| Authors: | LIU Dechao XIONG Jian |
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| Affiliation: | (1.Foton Motor Group Co., Ltd, Beijing 102206 , China ; 2.Foton Motor Group Co., Ltd, Beijing 102206 , China) |
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| Abstract: | Because of its simple structure and high reliability, the reluctance resolver has been more and more used in motor position detection, especially in the main drive motor system of new energy vehicles. In the application of the reluctance type resolver, the resolver is generally considered as an ideal transformer with a variable ratio, and then the error is analyzed according to the decoding principle. However, in practical applications, the excitation and sine and cosine signals of the resolver need to be processed by a certain circuit, and the actual performance of the resolver itself in the circuit will also introduce decoding errors, which requires us to accurately model the resolver to analyze its actual load effect in the circuit. This article first introduces the basic principles of the reluctance resolver, and then analyzes the self-inductance and mutual inductance of its excitation and signal windings in detail, and uses the self-inductance and mutual inductance of the excitation winding and signal winding to derive the equivalent circuit of the resolver. Based on this equivalent circuit, the decoding error caused by the resolver and its connected circuit is analyzed, which provides a basis for the application circuit design of the resolver. |
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| Keywords: | Reluctance resolver Equivalent Circuit Decoding error Reflection Impedance |
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