Vector Control of AC Drives

Vector Control of AC Drives

by SyedA. Nasar

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Alternating current (AC) induction and synchronous machines are frequently used in variable speed drives with applications ranging from computer peripherals, robotics, and machine tools to railway traction, ship propulsion, and rolling mills. The notable impact of vector control of AC drives on most traditional and new technologies, the multitude of practical configurations proposed, and the absence of books treating this subject as a whole with a unified approach were the driving forces behind the creation of this book.

Vector Control of AC Drives examines the remarkable progress achieved worldwide in vector control from its introduction in 1969 to the current technology. The book unifies the treatment of vector control of induction and synchronous motor drives using the concepts of general flux orientation and the feed-forward (indirect) and feedback (direct) voltage and current vector control. The concept of torque vector control is also introduced and applied to all AC motors. AC models for drive applications developed in complex variables (space phasors), both for induction and synchronous motors, are used throughout the book. Numerous practical implementations of vector control are described in considerable detail, followed by representative digital simulations and test results taken from the recent literature.

Vector Control of AC Drives will be a welcome addition to the reference collections of electrical and mechanical engineers involved with machine and system design.

Product Details

ISBN-13: 9781351405584
Publisher: CRC Press
Publication date: 11/22/2017
Sold by: Barnes & Noble
Format: NOOK Book
Pages: 256
File size: 10 MB

Table of Contents

INTRODUCTION. Electric Drives Topology. Motor-Load Dynamics and Stability. Typical Load Torques. Multiquadrant Operation. Converters for AC Motors. Performance Indices of Modern Electric Drives. Vector Controllers. Control Robustness. Vector Control of AC Drives. AC MOTOR MODELS FOR DRIVE APPLICATIONS. The Phase Variable Model of Induction Machines. Complex Variable (Space Phasor) Model of Induction Machines. The dq Model of Induction Machines. Treatment of Saturation. The Phase Variable Model of Synchronous Machines. The Complex Variable (Space Phasor) Model of Synchronous Machines. Complex Variable (Space Phasor) Diagram of the Synchronous Motor. FUNDAMENTALS OF INDUCTION MACHINE VECTOR CONTROL. The General Flux Orientation Concept. Vector Current Control. Vector Voltage Control. Constant Airgap Flux Operation. Constant Rotor Flux Operation. Constant Stator Flux Operation. Constant Flux Operation Comparisons. VECTOR CONTROL OF VOLTAGE-SOURCE INVERTER-FED INDUCTION MOTOR DRIVES. Indirect Rotor Flux Orientation-Vector Current Control. Indirect Rotor Flux Orientation-Vector Voltage Control. Robust Flux Estimation for Direct Vector Control. Airgap Flux Orientation-Vector Current Control. Direct Slater Flux Orientation-Vector Control. Torque Vector Control (TVC). VECTOR CONTROL OF CURRENT-SOURCE INVERTER-FED INDUCTION MOTOR DRIVES. Indirect Rotor Flux Orientation Vector Control. Torque Vector Control (TVC). FUNDAMENTALS OF SYNCHRONOUS MACHINE VECTOR CONTROL. The Equations with the Stator Flux Evidentiated. Variable g* Control (i*d = Constant or d-q Control). Constant g* (Power Factor Angle) Control. Voltage Vector Control. Torque Vector Control. Steady State Operation for Given i*d. Steady State Operation for Given Stator Flux ls* and Constant g*. VECTOR CONTROL OF PERMANENT-MAGNET SYNCHRONOUS MOTOR DRIVES. Indirect Vector d-q Current Control. Indirect Vector Voltage Control. Torque Vector Control. VECTOR CONTROL OF VOLTAGE-SOURCE INVERTED-FED RELUCTANCE SYNCHRONOUS MO

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