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題 名 | 全數位式三相變流器的PWM調變器 |
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作 者 | 李耀松; | 書刊名 | 技術學刊 |
卷 期 | 8:3 1993.09[民82.09] |
頁 次 | 頁333-339 |
分類號 | 448.232 |
關鍵詞 | 三相; 全數位式; 調變器; 變流器; |
語 文 | 中文(Chinese) |
中文摘要 | 本文是設計一驅動三相交流感應馬達PWM變流器的全數位式可程式PWM調變器的新方法。本文提出的架構適合任何四分之一波形對稱的PWM 控制策略。PWM切換波形型式只需計算四分之一週期並存入EPROM中,這方法可解決須要大記憶體空間的要求與避免直接線上計算。本架構調變器的所有控制參數皆能夠由微處理器軟體來控制,具簡單、可變性佳及高切換角度解析度的優點。本文架構以交流馬達為負載在調變指數、頻率及切換波形式改變時沒有暫態現象而且保證得到高品質輸出線電流波形。本文將詳細說明調變器的架構及其一些實際實驗的結果。 |
英文摘要 | In this paper, the design of a new fully digitized PWM modulator for a PWM inverter supplying a three-phase induction motor is presented. The proposed scheme is suitable for any PWM control strategies with quarter-cycle symmetry. The PWM patterns are calculated for the first quarter-cycle and stored in EPROM, it sloves the large memory requirement problem and avoids on-line computation of the PWM patterns. In this modulator, all control parameters can he controlled by microprocessor software. It is simple, flexible, and has high switching angles resolution. The proposed scheme is transient free during the modulation index, frequency, and switching pattern changes and guarantees good-quality output line current waveform under ac motor load. A detailed description of the modulator and some experimental results are included. |
本系統中英文摘要資訊取自各篇刊載內容。