臺灣博碩士論文加值系統

本文旨在分析、模擬、建模及實作雙繞組永磁式無刷直流電動機驅動器之新控制架構。本文利用Flux2D之有限元素法軟體分析永磁式無刷直流電動機之磁場分布及穩態特性，此外並考慮電動機特性受電樞反應下的評估，其中包括磁飽和及反電動勢畸變的現象。文中亦建立雙繞組永磁式無刷直流電動機及雙變流器之數學模型，並搭配本文所提出的雙通道脈波寬度調變訊號控制策略分析轉矩及電流，其中雙通道脈波寬度調變訊號控制策略又可分為非交錯式及交錯式。交錯式脈波寬度調變訊號並可降低轉矩抖動及電流漣波。此外本文所提出之永磁式無刷直流電動機採用雙繞組及雙變流器的硬體架構，配合雙通道脈波寬度調變訊號之控制策略，由分析及實驗結果顯示均可如預期的分擔系統之輸出功率及提升可靠度。
本文之系統採用單晶片微控器(H8/3672)作為控制核心以產生雙通道脈波寬度調變訊號，並建立低價位之雙變流器硬體架構，完成1 kW雙繞組結構之永磁式無刷直流電動機控制系統雛型，並提出模擬和實驗結果證明此架構之效益及特點。

This thesis is concerned with the analysis, simulation, modeling, and implementation of a new control strategy for dual-winding permanent-magnet brushless dc motor drive systems. The characteristics of the motor such as magnetic field distribution and steady-state property are analyzed by Flux2D using finite-element method. In addition, the magnetic saturation and back electromotive force distortion caused by armature reaction are also considered. Then the mathematical models of dual-winding permanent-magnet brushless dc motor and dual-inverter are built. Torque and current analyses for dual-channel pulse-width modulation with interleaved and non-interleaved control strategies are given. The result shows that the interleaved control will yield less torque fluctuation and current ripple. Besides, both analysis and experiment indicate that dual-winding permanent-magnet brushless dc motor with dual-inverter using dual-channel pulse-width modulation will share the output power and enhance system reliability as expected.
A single-chip microcomputer (H8/3672) is used to serve as the core controller. It generates the dual-channel pulse-width modulation signals to implement a 1 kW dual-winding permanent-magnet brushless dc motor with low-cost dual-inverter prototype drive system. Simulation and experimental results are given to justify the proposed control strategy.

目錄
中文摘要 …………………………………………………………….I
英文摘要 …………………………………………………………… II
誌 謝 …………………………………………………………...III
目 錄 …………………………………………………………...IV
符號索引 …………………………………………………………...VI
圖表索引 …………………………………………………………VIII
第一章 緒論 1
1.1 研究動機 1
1.2 文獻探討 1
1.3 系統架構及貢獻 2
1.4 大綱 3
第二章 永磁式無刷直流電動機分析 4
2.1 前言 4
2.2 永磁式無刷直流電動機結構及磁路分析 4
2.3 電動機繞組分布及反電動勢分析 10
2.3.1 電動機繞組分布 10
2.3.2 反電動勢分析結果 11
2.4 電動機之電樞反應影響 14
2.5 性能評估及反電動勢實測 20
2.5.1 反電動勢實測 20
2.5.2 性能評估 21
2.6 結語 22
第三章 雙繞組永磁式無刷直流電動機驅動系統 23
3.1 前言 23
3.2 永磁式無刷直流電動機數學模型推導 23
3.3 系統架構 25
3.4 雙繞組控制策略 26
3.5 六步方波操作之控制策略及模擬 28
3.5.1 控制策略規劃 28
3.5.2 六步方波控制之變流器模式 33
3.6 模擬結果 38
3.7 結論 44
第四章 實體製作 45
4.1 前言 45
4.2 硬體電路之製作 45
4.3 軟體程式規劃 51
4.4 實測結果 55
4.5 結語 59
第五章 結論及未來研究方向 60
5.1 結論 60
5.2 未來研究方向 61
參考文獻 62
作者簡介 66

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