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Permanent Magnet Synchronous and Brushless DC Motor Drives

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Features

Presents fundamentals of machines power devices inverters and control

Covers both PM synchronous drives and brushless dc motor drives

Addresses important issues in machine modeling control strategies flux weakening current controller and speed controller design rotor position sensorless control torque smoothing and parameter sensitivity

Simulates drive systems with sample MATLAB® code in the text

Table of Contents

PART I:Introduction to Permanent Magnets and Machines and Converters and Control

Chapter 1 Permanent Magnets and Machines

Permanent Magnets

Arrangement of PMs

Magnetization of PMs

PM ac Machines

Fundamentals of Synchronous Machines

Fundamental Synchronous Machine Relationships

Core Losses

Resistive Losses

Initial Machine Design

Cogging Torque

Basic Types of PMSMs Based on Flux Paths

Vibration and Noise

Chapter 2 Introduction to Inverters and Their Control

Power Device

DC Input Source

DC to ac Power Conversion

Real Power

Reactive Power

Need for Inverter Control

Pulse Width Modulation

Hysteresis Current Control

Space Vector Modulation

Inverter Switching Delay

Input Power Factor Correction Circuit

Four-Quadrant Operation

Converter Requirements

PART II: Permanent Magnet Synchronous Machines and Their Control

Chapter 3 Dynamic Modeling of Permanent Magnet Synchronous Machines

Real-Time Model of a Two-Phase PMSM

Transformation to Rotor Reference Frames

Three-Phase to Two-Phase Transformation

Zero Sequence Inductance Derivation

Power Equivalence

Electromagnetic Torque

Steady-State Torque Characteristics

Models in Flux Linkages

Equivalent Circuits

Per Unit Model

Dynamic Simulation

Small-Signal Equations of the PMSM

Evaluation of Control Characteristics of the PMSM

Computation of Time Responses

Space Phasor Model

Chapter 4 Control Strategies for a Permanent Magnet Synchronous Machine

Vector Control

Derivation of Vector Control

Drive System Schematic

Control Strategies

Chapter 5 Flux-Weakening Operation

Maximum Speed

Flux-Weakening Algorithm

Direct Flux Weakening

Parameter Sensitivity

Model-Free (Parameter-Insensitive) Flux-Weakening Method

Six-Step Voltage and Constant Back EMF Control

Strategies for PMSM

Direct Steady-State Evaluation

Flux Weakening in SMPM and IPM Synchronous Machines

Chapter 6 Design of Current and Speed Controllers

Current Controller

Speed Controller

Chapter 7 Parameter Sensitivity and Compensation

Introduction

Parameter Compensation through Air Gap Power Feedback Control

Parameter Compensation by Reactive Power Feedback Control

Chapter 8 Rotor Position Estimation and Position Sensorless Control

Current Model Adaptive Scheme

Sensing by External Signal Injection

Current Model-Based Injection Scheme

Position Estimation Using PWM Carrier Components

PART III: Permanent Magnet Brushless DC Machines and Their Control

Chapter 9 PM Brushless DC Machine

Modeling of PM Brushless DC Motor

Normalized System Equations

The PMBDCM Drive Scheme

Dynamic Simulation

Chapter 10 Commutation Torque Ripple and Phase Advancing

Commutation Torque Ripple

Phase Advancing

Dynamic Modeling

Chapter 11 Half-Wave PMBDCM Drives

Split Supply Converter Topology

C-Dump Topology

Variable DC Link Converter Topology

Variable Voltage Converter Topology with Buck-Boost Front-End

Chapter 12 Design of Current and Speed Controllers

Transfer Function of Machine and Load

Inverter Transfer Function

Transfer Functions of Current and Speed Controllers

Current Feedback

Speed Feedback

Design of Controllers

Chapter 13 Sensorless Control of PMBDCM Drive

Current Sensing

Position Estimation

Chapter 14 Special Issues

Torque Smoothing

Parameter Sensitivity of the PMBDCM Drive

Faults and Their Diagnosis

Vibration and Noise

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