應用於電子式馬達模擬器之脈波電壓資訊擷取

Information Acquisition of Pulsating Voltage for Electric Motor Emulator Applications

陳振嘉(Zhen-Jia Chen)

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(2021年)

https://doi.org/10.6342/NTU202102953

摘要

本論文提出應用於電子式馬達模擬器之脈波電壓資訊擷取，其目的在於提升電子式馬達模擬器的電壓偵測精確度。在馬達模擬器中，傳統電壓偵測方法是利用電壓感測器偵測切換電壓，並透過低通濾波器濾除高頻切換成份後，使用類比/數位轉換模組，將電壓訊號送至數位訊號處理器中。然而，此種方式所得出之訊號會有相位延遲及易受雜訊干擾的缺點。
為了改善使用傳統電壓偵測方法的缺點，本論文提出脈波電壓資訊擷取之電壓偵測方法，並將其應用在電子式馬達模擬器中，使控制迴圈能有較精確的電壓資訊，而脈波電壓資訊擷取為利用數位式訊號進行傳輸，並使用數位訊號處理器直接對脈波訊號進行偵測。本論文將詳細介紹並分析脈波電壓資訊擷取，並藉由電腦模擬以及硬體實驗，驗證本論文提出之電壓偵測方法。根據硬體實驗結果，應用脈波電壓資訊擷取相較於傳統電壓偵測方法，具有較佳的表現，最後也將該方法應用在電子式馬達模擬器中，用以得到更精確的電壓資訊。

關鍵字

電力層級硬體迴路 ； 永磁式同步馬達 ； 電子式馬達模擬器 ； 脈波電壓資訊擷取

並列摘要

A new voltage sensing method, named Information Acquisition of Pulsating Voltage (IAPV), is proposed in this thesis to improve the accuracy of voltage measurement for the electric motor emulator (EME). In the EME, the conventional voltage sensing (CVS) method was applied to measure switching node voltage with voltage sensors and low-pass filters to remove higher switching frequency components. Then, the sensed voltage signal was sampled by analog-to-digital conversion (ADC) module before it can be processed by the digital signal processor (DSP). However, the signal obtained by the CVS method is susceptible to phase delay and noise interference.
In order to deal with the disadvantage of the conventional CVS method, a new voltage sensing method for pulsating voltage is proposed in this thesis and is applied to the EME to obtain more accurate voltage information for the control loop. The pulsating voltage signal is digitally transmitted and directly processed by the DSP. Detailed explanation and analysis of the proposed IAPV method are provided in this thesis. Simulations and hardware experiments are performed to validate the proposed IAPV method. Based on the experimental results, the proposed IAPV method can achieve better performance than the conventional CVS method. Finally, the proposed IAPV method is applied to the EME to achieve more accurate voltage information.

並列關鍵字

Power Hardware-in-the-Loop ； Permanent Magnet Synchronous Motor ； Electric Motor Emulator ； Information Acquisition of Pulsating Voltage

參考文獻

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