具速度回授控制之預測型直接轉矩控制系統晶片設計與實現

Design and Implementation of the Predictive Direct Torque Control ASIC with Speed Feedback Controller

楊崇秉(Chong-Bing Yang)

指導教授 ： 宋國明

國立臺北科技大學/機電學院/自動化科技研究所/碩士(2013年)

摘要

本論文旨在設計一顆具有速度控制之預測型直接轉矩控制系統晶片，藉此減少遲滯控制器的漣波響應並增加其控制能力與控制品質。本研究係使用Verilog硬體描述語言來撰寫硬體架構，並以可規劃邏輯陣列(FPGA)實現與驗證。
傳統直接轉矩控制係使用遲滯控制器來控制轉矩與磁通，但是當實現於離散數位系統時，數位控制器會因為取樣的時間和計算時間的延遲而造成遲滯控制器產生較大的漣波響應，導致控制能力下降。本論文控制系統的基本原理為經由偵測馬達三相電壓、電流與轉子轉速來計算出馬達磁通量與轉矩量，經由速度PI控制器和預測控制來得到適當的電壓向量切換表，則不僅可以改善傳統直接轉矩控制的轉矩及磁通漣波響應過大的缺點，也可以減少遲滯控制器因時間延遲所造成的控制能力下降問題，使馬達控制系統更為穩定。
本論文運用硬體描述語言撰寫出控制系統的運作模式，並確認語法與功能正確無誤後，藉由台積電TSMC0.18-μm製程的元件庫與Synopsys和Cadence公司所提供的最佳化軟體來完成電路合成、自動佈局繞線與驗證等晶片開發程式，最後完成整個三相感應交流馬達控制晶片的設計與製作。經過FPGA驗證之後，本研究可以有效改善遲滯控制器的控制能力。

關鍵字

硬體描述語言 ； 直接轉矩控制 ； 速度回授控制之預測型直接轉矩控制 ； 特定應用積體電路

並列摘要

The thesis aims to design and implement a direct torque control (DTC) chip based on modified predictive scheme not only to decrease the ripple of the hysteresis controller but also toenhance the performance of motor controller. Verilog hardware description language (HDL) is used to implement the hardware architecture; and that an ASIC is implemented in TSMC 0.18-μm technology with cell-based design style.
In general, the hysteresis controller is used in traditional direct torque control system.However, the hysteresis controller will introduce more ripple in discrete digital system. Notify that both sampling and calculating delay time contribute the ripple response which degrades the control quality in motor system.
The basic principle of this control system is to calculate the stator's magnetism flux and torque by detecting the three-phase current, three-voltage and the rotor speed.by using the speed PI controller, predictive controller , and coordinate transform circuit , we can have a suitable response in motor speed.
we can not only improve the ripple issue of the traditional direct torque control technique, but also can make the control system more stable by decreasing the time delay in hysteresis controller have been verified.
After the syntax and function, the control system is implemented with the synthesis tool, the auto place & routed tool, and the function simulation tool. Finally, an ASIC is fabricated in 0.18-μm 1P6M CMOS process for three-phase induction motor control system.

並列關鍵字

Hardware description language ； direct torque control ； predictive direct torque control with Speed Feedback Controller ； application-specific integrated circuit

參考文獻

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