本篇論文著重在設計直接轉矩控制之感應馬達驅動,使用Verilog硬體描述語言來撰寫硬體架構,最後以數位IC元件庫設計模式來完成此顆IC之設計。 直接轉矩架構的原理主要控制定子磁通與轉子轉速,經過模組的計算後,選擇適當變頻器功率電晶體的切換狀態,以達到快速、不易受到外在環境影響的馬達控制響應。首先,轉子轉速經過速度控制器後得到目標轉矩值,再利用變頻器的切換狀態,取得馬達的三相電壓與量測得到的三相電流,由三相轉二相模組,將其轉換至d-q軸靜止座標,以估測馬達的磁通量與轉矩量。再分別和目標定子磁通與目標轉矩值經過磁滯比較器的結果,和利用d-q軸之定子磁通量選擇區塊位置的結果,由此三個結果經由直接轉矩的電壓向量切換表,來選擇個適當的電壓向量,進而激發功率電晶體,達到控制三相感應馬達的目的。 此次運用了硬體描述語言撰寫出系統的運作模式,並待功能驗證無誤後,藉由台積電TSMC0.18μm製程的元件庫與Synopsys和Candence兩大EDA設計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開發程序,藉此完成直接轉矩控制感應馬達驅動晶片的製作。
The focus of this paper is the driver IC design of direct torque control (DTC) induction motor, and uses the hardware description language (Verilog) is composed of hardware architecture. The cell-based digital IC design flow is used to design this control IC. The main principle of the direct torque control architecture is controlled magnetism and torque of the stator. It could select suitable for switch sequence of the inverter to induce a fast response of the induction motor after calculating the module. First, the rotor speed obtains the value by speed controller module, and use of switching state to get the three-phase voltage and the three-phase current. Those transforms into the d-q static axis by abc-dq transformation module, which used to compute the stator’s magnetism and torque. By comparing with original values, those magnetism and torque will be calculated and set to new datas. The switching table and the hysteresis controller are decided with the new data and generated a voltage vector and to control the stator magnetism and torque. The system function is programming with the hardware description language, and examining the functionality work. To Complete this IC design of direct torque control induction motor by TSMC 0.18μm cell library, and the EDA tools which vendors were Synopsys and Candence are employed for circuit implementation, which included circuit synthesis, auto place and routing and design verification for chip implementation. Completes this IC design of direct torque control induction motor.