具電壓前饋補償之電子式永磁同步馬達模擬器

An Electric Permanent Magnetic Synchronous Motor Emulator with Feedforward Voltage Compensation

鄭哲安(Che-An Cheng)

指導教授 ： 陳耀銘

國立臺灣大學/電機資訊學院/電機工程學研究所/碩士(2020年)

https://doi.org/10.6342/NTU202004489

摘要

本論文提出一種具電壓前饋補償之電子式永磁同步馬達模擬器，其目的在於提升電子式馬達模擬器之頻寬以提高馬達模擬器之準確度。在傳統的馬達模擬器，因為控制器參數由耦合電路之參數決定，因此整體電路頻寬將被限制。為了提高馬達模擬器的準確度，因此馬達模擬器之電路頻寬需盡量提升。
為了優化電子式馬達模擬器的控制器，本論文提出基於電壓前饋補償應用於電子式馬達模擬器之優化方法。電壓前饋補償項式透過馬達電氣模型以及馬達模擬器之等效模型進而推算出馬達模擬器中的換流器應產生的等效反電動勢。此優化方法不需額外電路或修改電路便能提升馬達模擬器整體電路之頻寬至1.54×104 赫茲，並提升其模擬準確度。本論文將詳細介紹並說明電壓前饋補償之推導過程以及其控制器分析，並且將會藉由電腦模擬以及硬體實驗結果驗證電子式馬達模擬器以及本論文提出基於電壓前饋補償之表現。根據硬體實驗結果，與傳統電子式馬達模擬器控制策略相比，本論文所提出的基於電壓前饋補償的模擬精準度可提高23.2%。

關鍵字

電力層級硬體迴路 ； 永磁同步馬達 ； 電子式馬達模擬器 ； 前饋補償

並列摘要

An optimization method, named Model-based Feedforward Voltage Compensation (MBFVC) is proposed in this thesis to raise the bandwidth of the electric motor emulator (EME) and achieve higher emulation accuracy of the EME. In the conventional EME, a proportional-integral (PI) controller is adopted in the EME controller. Since the coefficients of PI controller are fixed by the parameters of the coupling network, the bandwidth of the EME is fixed. In order to achieve a higher emulation accuracy of the EME, the bandwidth of the EME should be as high as possible.
To improve the controller in the EME, an optimization method based on feedforward voltage compensation is explored in this thesis. The feedforward compensation term is designed based on the equivalent back electromotive force of the EME. In the proposed MBFVC, no extra circuitry is required. The bandwidth of the EME with the proposed MBFVC can raise up to 1.54×104 Hz. Details of the mathematical derivation and the controller analysis of proposed MBFVC are provided in this thesis. The computer simulation and hardware experimental results are presented to validate the performance of the EME and the proposed MBFVC as well. Based on the hardware experimental results, the emulation accuracy of the proposed MBFVC can be improved by 23.2% in comparison with the conventional control scheme on the EME.

並列關鍵字

Power Hardware-in-the-Loop ； Permanent Magnet Synchronous Motor ； Electric Motor Emulator ； Feedforward Compensation

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