本論文旨在開發一應用於冷凍空調系統之馬達驅動系統，其包含一弦波驅動無位置感測內置磁石式永磁同步馬達驅動之壓縮機、一方波驅動表面貼磁式永磁同步馬達驅動之風扇以及一單相升壓型切換式整流器前級由市電建立共通直流鏈電壓，並具有良好之交流入電電力品質。所建驅動系統之三個組成電力電路之全數位控制均由單一共同數位訊號處理器為之。
所建構弦波馬達驅動壓縮機之無位置感測控制器，利用所發展之兩種以內部模式為主反電動勢估測無位置感測方法為之，並進行性能比較評估。至於方波馬達驅動之風扇，其無位置感測控制係以感測之馬達線圈端電壓為之。對於此兩種無位置感測控制之永磁同步馬達驅動系統，均採適當之換相前移以改善不理想控制之驅動性能劣化，尤其在高速運轉情況下。另外，亦考慮較平滑且降低電流之啟動方式。
最後在本文所建構之單相切換式整流器前級方面，其具磁滯電流控制內迴路及外電壓控制迴路。利用簡易之強健控制技巧，改善電流及電壓之控制性能。此外，進一步開發隨機切換策略，應用於固定磁滯帶與正弦磁滯帶之電流控制脈寬調變機構，並由實測觀察其對電流諧波頻譜分散性及切換式整流器之操作性能影響。

This thesis develops a motor drive system for condensing unit applications. The system consists of a position sensorless sinewave excited interior permanent-magnet synchronous motor (IPMSM) driven compressor, a square-wave excited surface mounted PMSM (SPMSM) driven fan, and a single-phase boost-type switch mode rectifier (SMR) front end to establish their common DC-link voltage from utility with satisfactory line drawn power quality. All the constituted power stages are fully digitally controlled in a common digital signal processor (DSP).
For the compressor IPMSM drive, two types of sensorless control schemes based on the devised internal model based back-EMF estimators are developed and comparatively evaluated. As to the square-wave SPMSM fan drive, its position sensorless control is conducted based on the sensed motor terminal phase voltage. For these two types of PMSM drives, the proper commutation instant shifts are applied to enhance their driving performances, which may be deteriorated due to non-ideal sensorless controls, particularly under higher speeds. In addition, the smooth starting with less current transient is also considered.
Finally, in the established single-phase boost SMR front-end, it possesses the inner hysteresis current-controlled PWM (H-CCPWM) scheme and outer voltage control loop. The simple robust control approach is applied to yield improved current and voltage control performances. Moreover, various types of the randomly varying bands for the H-CCPWM schemes are proposed, and their effects on the current harmonic spectral spreading characteristics and the SMR operating performance are observed experimentally.

ACKNOWLEDGEMENTS
ABSTRACT
LIST OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
CHAPTER 1 INTRODUCTION
CHAPTER 2 COMMON DSP-BASED STANDARD
COMPRESSOR AND FAN PERMANENT
MAGNET SYNCHRONOUS MOTOR DRIVES
2.1 Introduction
2.2 Basics of PMSMs
2.3 Governing Equations
2.4 Speed Loop Dynamic Model
2.5 System Configuration of the Developed PMSM Drives
2.6 Power Circuit, Sensing and Interfacing Circuits
2.7 Standard PMSM Sine-wave Drive
2.8 Standard PMSM Square-wave Drive
CHAPTER 3 POSITION SENSORLESS CONTROL FOR
SINE-WAVE PMSM DRIVEN COMPRESSOR
3.1 Introduction
3.2 Some Existing PMSM Position Sensorless Control
Approaches
3.3 The Established Position Sensorless Sine-wave PMSM Drive
3.4 Performance Evaluation for the Test PMSM Drive
3.5 Performance Evaluation for the PMSM Driven Compressor
3.6 Commutation Instant Advanced Shifting
CHAPTER 4 POSITION SENSORLESS CONTROL FOR SQUARE-WAVE PMSM DRIVEN FAN
4.1 Introduction
4.2 Operation and Position Sensorless Control of a Square-wave
PMSM Drive
4.3 System Configuration and Proposed Sensorless Method
4.4 Starting
4.5 Estimated Speed Control
4.6 Random PWM Switching Control
CHAPTER 5 POSITION SENSORLESS CONTROLLED SINEWAVE PMSM DRIVE POWERED BY SWITCH-MODE RECTIFIER .
5.1 Introduction
5.2 Classification of SMRs
5.3 System Configuration and Problem Statements
5.4 Development of Boost Switch-Mode Rectifier
5.5 Hysteresis Current-Controlled PWM Scheme with Randomly
Varying Band
5.6 Experimental Performance Evaluation for the Whole
SMR-Fed Position Sensorless Controlled PMSM Drive
CHAPTER 6 CONCLUSIONS
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