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研究生：	施柏維 Shi, Bo-Wei
論文名稱：	應用解耦合直接控制於全數位化脈寬調變馬達驅動系統之研究 Study of Decoupled Direct Control for Induction Motor Drives with Digitalized PWM
指導教授：	陳添智 Chen, Tien-Chi
學位類別：	碩士 Master
系所名稱：	工學院 - 工程科學系 Department of Engineering Science
論文出版年：	2005
畢業學年度：	93
語文別：	英文
論文頁數：	86
中文關鍵詞：	空間電壓向量、全數位脈寬調變、解耦合直接控制
外文關鍵詞：	digitalized pulse width modulation, space voltage vector, decoupled direct control
相關次數：	點閱：115 下載：3
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　　傳統的間接磁場導向控制 (FOC)技術需要非線性座標軸轉換，這將會使微處理機計算的時間變長。為了改善這個缺點，本文首先探討解耦合直接控制(Decoupled Direct Control, DDC)感應馬達驅動系統。解耦合直接控制建構於一解耦合矩陣，此矩陣是分別對轉子磁通量和轉矩做控制，來產生適當電壓命令使得回授的轉子磁通量和轉矩估測器估測出來的轉矩追隨轉子磁通量命令和轉矩命令，這方法的優點有：(1) 因為直接對轉子磁通量和轉矩作控制，所以並不需要座標軸轉換，可減少微處理機計算的時間，(2) 在電流迴路沒有使用控制器，可提升轉矩的暫態響應。其次是利用空間電壓向量原理發展出全數位脈寬調變(Pulse Width Modulation, PWM)方法，以控制電壓源變流器(Voltage Source Inverter, VSI)，其中頻率控制單元利用非零電壓向量之原理，來控制電壓源變流器輸出電壓頻率。而電壓控制單元利用零電壓向量之原理，來控制電壓源變流器輸出電壓大小，這方法提出具有適應性的表格，使我們可以輕易的調節表格內容得到有低諧波的定子電流，以減少轉矩脈動和切換損失。經由解耦合直接控制和全數位脈寬調變技術，可達到一良好的感應馬達驅動系統。

　　最後以本論文所提出的控制架構搭配DSP TMS320F2812 具定點運算功能的32位元處理器和實驗室自行設計的馬達驅動電路，來完成一高效能感應馬達驅動系統。由模擬和實作的結果驗證所提出的控制方法優於傳統的間接磁場導向控制並具有良好的效能。

　The traditional indirect field-oriented control (FOC) needs nonlinear coordinate transformation and that will increase the computation time. To improve the above drawback, the decoupled direct control (DDC) for the induction motor drive is developed in this thesis. The decoupled direct control is based on a decoupled matrix, which is used to directly control torque and rotor flux to generate voltage command and make the estimated torque and rotor flux track to their command quickly. The method has some advantages: 1) Because of directly controlling the rotor flux and torque without coordinate transformation, the computational time can be decreased largely. 2) There is not any controller in current loop so the transient response of the torque and rotor flux can be improved.
Next, using the space voltage vector theorem to develop a digitalized pulse width modulation (PWM) algorithm for voltage source inverter. The frequency control unit uses the principle of non-zero-voltage vectors to control the output voltage frequency of the voltage-source inverter and the voltage control unit uses the principle of zero-voltage vectors to control the output voltage magnitude of the voltage-source inverter. To reduce torque pulsation and switching loss, the algorithm proposes an adaptable table so that the low stator currents harmonic can be obtained by adjusting content of the adaptable table. Combining decoupled direct control scheme and digitalized PWM algorithm, a high-performance induction motor drive can be achieved.

　The proposed control scheme is implemented by using a 32-bit TMS320F2812 digital signal processor and motor driver circuit. Simulation and experiment results demonstrate the proposed control scheme is superior to the traditional FOC scheme and has good performance.

摘要	I
Abstract	II
Acknowledgements	III
Contents	IV
List of Figures and Tables	VII
Symbols	XII
Chapter 1 Introduction	1
1 Motivation	1
2 Structure of the Thesis	4
Chapter 2 Principle of Decoupled Direct Control	5
1 The Mathematical Model of Induction Motor	5
2 Indirect Field-Oriented Control	7
3 Stator Flux Vector Control	8
4 Decoupled Direct Control	10
4.1 DDC Algorithm Architecture	11
4.2 Torque and Flux Estimator	16
Chapter 3 Digitalized Pulse Width Modulation	17
1 Flux Linkage Vector	17
2 Non-Zero-Voltage Vectors and Frequency Control	20
3 Zero-Voltage Vectors and Voltage Control	25
4 The Frequency and Voltage Control Algorithm	27
Chapter 4 Experiment Equipment	30
1 The Equipment Block	30
2 Introduction of TMS320F2812 Emulation Board	31
2.1 The Feature of TMS320F2812	31
2.2 TMS320F2812 Emulation Board Connector Positions	32
2.2.1 MP/MC Mode Select	33
2.2.2 Boot Mode Select	33
2.2.3 XF ( )	34
2.2.4 Xilinx CPLD JTAG	35
2.2.5 XDS410PP JTAG	35
2.2.6 ADC/DAC Interface	36
2.2.7 Serial Port Interface	37
2.2.8 Digital I/O and Control Signal Interface	37
2.2.9 Motor Control Peripherals	39
2.2.10 DS1- LCD Control Module	40
2.2.11 Keyboard Control Module	40
2.2.12 Power Supply Connector, J7	41
2.2.13 eCAN Module Interface	41
2.2.14 RS232 Connector, J9	41
2.3 Peripherals overview	42
2.3.1 Power Management	42
2.3.2 ADC	44
2.3.3 DAC with SPI Interface	46
3 The Process of Software Control Program	48
4 The Motor Driver Circuit	50
4.1 Inverter	50
4.2 Time-Delay Circuits	51
4.3 Current Measurement Circuits with Hall Sensor	52
4.4 Shift and Scale Circuits	52
Chapter 5 Simulation and Experiment Results	57
1 Simulation Results	57
2 Experiment Results	71
Chapter 6 Conclusions	81
1 Conclusions	81
2 Suggestion for Further Possible Research	82
References	83
Vita	86
                                    

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校內：2006-08-01公開
校外：2006-08-01公開

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