tailieunhanh - Direct torque control
Direct torque control - or DTC - is the most advanced AC drive technology developed by any manufacturer in the world. The purpose of this technical guide is to explain what is; why and how it has evolved; the basic theory behind its. | Technical Gtweww Direct Torque Control - the world s most advanced AC drive technology ABB Contents 1 Introduction. 5 General. 5 This Manual s Purpose. 5 Using this Guide. 5 2 Evolution of Direct Torque Control. 6 What is a Variable Speed Drive . 6 Summary. 6 DC Motor Drives. 7 Features. 7 Advantages. 7 Drawbacks. 8 AC Drives - Introduction. 8 AC Drives - Frequency Control using PWM. 9 Features. 9 AC Drives - Flux Vector Control using PWM . 10 Features . 10 Advantages . 11 Drawbacks . 11 AC Drives - Direct Torque Controlling Comparison of Variable Speed 3 Questions and General . 15 Performance . 16 Operation . 22 4 Basic Control How DTC Torque Control Loop . 27 Step 1 Voltage and Current Step 2 Adaptive Motor Step 3 Torque Comparator and Flux Comparator 28 Step 4 Optimum Pulse Speed Control . 29 Step 5 Torque Reference Step 6 Speed Step 7 Flux Reference 5 .
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