8412_slides_topic7

8412_slides_topic7 - 1 1 EE8412 Advanced AC Drive Systems...

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Unformatted text preview: 1 1 EE8412 Advanced AC Drive Systems Topic 7 Direct Torque Control (DTC) Textbook: Bin Wu, High-Power Converters and AC Drives, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 Source: ABB 2 Lecture Topics DTC Principle Switching Logic Flux and Torque Calculation Simulation of VSI Drive with TDC DTC and FOC Comparison EE8412 Advanced AC Drive Systems Direct Torque Control (DTC) Textbook: Bin Wu, High-Power Converters and AC Drives, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 2 3 Motor Torque Topic 7 Direct Torque Control DTC Principle EE8412 T r s r s m e L L L P T sin 2 3 = T torque angle between the stator flux vector and rotor flux vector T e can be directly controlled by T and s The essence of DTC is to control T and s Textbook: Bin Wu, High-Power Converters and AC Drives, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 4 Principle of DTC Topic 7 Direct Torque Control DTC Principle EE8412 t V 4 r t V 1 r t V 2 r t V 6 r t V 5 r t V 3 r e s r e r r t V s s + = 2 r r r t V s s + = 5 r r r s T T T Space vector diagram for two-level VSI ( 7 vectors: V to V 6 ) Textbook: Bin Wu, High-Power Converters and AC Drives, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 3...
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8412_slides_topic7 - 1 1 EE8412 Advanced AC Drive Systems...

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