臺灣博碩士論文加值系統

本文旨在研製旋轉型之三相不斷電系統，利用永磁同步電動機之電機作驅動激磁型同步發電機，以提供三相負載。永磁式同步電動機之驅動器直流電源來自於三相全橋式二極體整流器；當市電故障時，由蓄電池供電。在電動機控制方面採用電流及轉子磁場角位置回授，再配合轉子旋轉座標轉換，完成電流及轉速閉迴路控制，且轉速命令值為固定，以使發電機輸出電壓頻率為固定，不因電源電壓及負載而變動。在激磁型同步發電機方面，採用直流截波器及激磁電流調節器，並回授三相輸出電壓以完成激磁場閉迴路控制，使其輸出電壓不受負載的影響。
本文以低價位之16位元高性能數位信號處理器(TMS320F2407A)為核心，其三相變流器控制與同步電動機轉速閉迴路控制，以及同步發電機之激磁電流控制皆由軟體完成，如此不但可減少硬體電路，亦可縮小控制電路體積。本文已完成600 W同步電動機轉速系統之雛型，其轉速固定為1800 rpm(輸出60 Hz)。實測結果驗證了控制策略之可行性。

This thesis is concerned with the design and implementation of rotary-type, three-phase uninterruptible power supply (UPS) systems. In this system, a permanent-magnet synchronous motor is used to drive an excited-type synchronous generator to generate three-phase electrical power to loads. The full-bridge diode rectifier is used to convert the utility to dc source for inverter to drive the permanent-magnet synchronous motor. Besides, batteries can release energy when utility fails to assure the supply of dc source voltage. The current control method of synchronous frame with closed-loop speed control mechanism is used to maintain constant motor speed. On the other hand, the dc chopper in accordance with the feedback of three-phase voltage is designed to adjust the exciting current for synchronous generator, and thereby outputs the three-phase electrical power with constant-voltage and constant-frequency.
A high-performance, low-cost, 16-bit digital signal processor (DSP, TMS320LF2407A) is used as the control core. The control of motor and inverter is accomplished by software for reducing the circuit complexity. A prototype of 600W synchronous motor with speed control system is developed. Finally, experiments are given to justify the feasibility of the proposed system.

目錄
中文摘要 ………………………………………………………. I
英文摘要 ………………………………………………………. II
致 謝 ………………………………………………………. III
目 錄 ………………………………………………………. IV
符號索引 ………………………………………………………. VI
圖表索引 ………………………………………………………. X

第一章 緒論…………………………………………………. 1
1-1 研究動機及目的……………………………………. 1
1-2 文獻探討 …………………………………………... 2
1-3 系統架構及本文特色………………………………. 5
1-4 本文大綱……………………………………………. 6
第二章 永磁式同步電動機及激磁式同步發電機模式…. 8
2-1 前言………………………………………………….. 8
2-2 三相永磁式同步電動機模式……………………….. 8
2-3 三相激磁式同步發電機模式………………………. 13
2-4 結語……………………….......................................... 15
第三章 永磁式同步電動機及激磁式同步發電機之控制…. 16
3-1 前言………………………………………………….. 16
3-2 三相變流器之脈波寬度調變控制 ……………….. 16
3-3 永磁式同步電動機之轉速閉迴路控制及功率控制策略……………………………………………………. 23
3-4 三相激磁式同步發電機之負載端電壓控制策略….. 26
3-5 結語…………………………………………………. 28
第四章 實體製作與實測結果……………………………….. 29
4-1 前言……………………………………………….…. 29
4-2 硬體電路………………………………………….…. 29
4-3 軟體規劃…………………………………………….. 38
4-4 實測結果…………………………………………….. 49
4-5 結語………………………………………………….. 63
第五章 結論與建議………………………………….………. 64
5-1 結論………………………………………………….. 64
5-2 建議………………………………………………….. 65
參考文獻 ………………………………………………………. 66
附錄A 永磁式同步電動機之規格及參數…………………. 69
附錄B 激磁式同步發電機之規格及參數…………………. 70
作者簡介 ……………………………………………………… 71

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