8412_slides_topic6

8412_slides_topic6 - Advanced AC Drive Systems Topic 6...

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1 1 EE8412 Advanced AC Drive Systems Topic 6 Field Oriented control (FOC) Source: ABB Textbook: Bin Wu, ‘High-Power Converters and AC Drives’, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 2 Lecture Topics Field Orientation General Block Diagram of FOC Direct Field Oriented Control Direct FOC with Current Controlled VSI Indirect Field Oriented Control EE8412 Advanced AC Drive Systems Field Oriented Control (FOC) Textbook: Bin Wu, ‘High-Power Converters and AC Drives’, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4
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2 3 Classification of Field Orientation Topic 6 Field Oriented Control Field Orientation EE8412 Rotor flux orientation Stator flux orientation Air-gap flux orientation Focus on rotor flux orientation It is relatively simple and widely used Textbook: Bin Wu, ‘High-Power Converters and AC Drives’, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4 4 Torque Production in DC Motors Topic 6 Field Oriented Control Field Orientation EE8412 a f a e i K T λ = T e – electromagnetic torque K a - armature constant λ f - flux produced by field circuit i a - armature current λ f = const T e is proportional to i a Flux λ f and i a can be controlled independently high dynamic performance. (1) Textbook: Bin Wu, ‘High-Power Converters and AC Drives’, Wiley-IEEE Press, 2006, ISBN: 0-471-73171-4
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