This hook presents a cutting-edge co-phase traction power supply technology designed to address the severe power quality issues that hinder the development of high-speed and heavy-duty railways. Traditional traction power supply systems struggle with problems such as negative sequence currents and the need for neutral zones. The proposed co-phase power supply system (CTPSS) eliminates these issues, but its core devices, particularly those using IGBT modules, face reliability challenges due to fluctuating traction loads that cause thermal stress. To address this, the book introduces a novel reliability assessment framework that accounts for random load variations and shock profiles, and suggests several improvement strategies based on device structure and operational behavior.
In addition to its theoretical contributions, the book provides practical insights drawn from extensive test data, offering detailed analysis of traction load characteristics and power quality across various railway lines. It also validates methods such as optimizing switching frequency, modifying modulation strategies, and enhancing redundancy to improve system reliability. Designed for both students and professionals in electrical engineering, this comprehensive work integrates reliability assessment, enhancement techniques, and protection strategies into a cohesive guide for understanding and advancing co-phase power supply technology.
Table of Contents
1 Introduction 1
1.1 Overview of Existing Traction Power Supply System Solutions 2
1.2 Overview of Co-phase Power Supply System 14
1.3 Research on Reliability of IGBT Module 18
1.4 Research on Reliability of CPD 21
References 23
2 Main Technical Challenges in Existing Traction Power Supply System Solutions and Control Measures 27
2.1 Load Characteristics of Electrified Railway 27
2.2 Electric Energy Quality Deficiencies and Control Measures 30
2.3 Issues Related to Neutral Section Passing and Countermeasures 41
2.4 Issues Related to System Efficiency and Improvement Techniques 46
2.5 Case Analysis 52
References 71
3 Operating Principles of Co-phase Power Supply Device 73
3.1 Basic Structure of Co-phase Power Supply System 73
3.2 Integrated Compensation Algorithm for Co-phase Power Supply System 81
3.3 Detection Methods for Compensation Current in Co-phase Power Supply System 93
3.4 Engineering Application Cases of Co-phase Power Supply Technology 110
References 118
4 Analysis of Thermal Failure Mechanism for IGBT Module in Co-phase Power Supply Device 121
4.1 Electric-Thermal-Mechanical Coupling Analysis 121
4.2 Junction Temperature Analysis of IGBT Module 122
4.3 Power Loss Analysis of IGBT Module 129
4.4 Analysis of Physical Failure Mechanism for IGBT Module 140
4.5 Calculation of Failure Rate for IGBT Module 142
References 150
5 Reliability Evaluation of Co-phase Power Supply Device 153
5.1 Reliability Evaluation Index 153
5.2 Reliability Analysis Methods for Co-phase Power Supply Device 156
5.3 Analysis of Influencing Factors for Reliability of Co-phase Power Supply Device 170
References 180
6 Reliability Improvement Technology of Co-phase Power Supply Device 183
6.1 Reliability Improvement Technology for Switching Frequency Optimization 183
6.2 Reliability Improvement Technology for Alternate Operation Optimization 190
6.3 Case Analysis 195
References 209
7 Protection Technology of Co-phase Power Supply Device 211
7.1 Analysis of Typical Failures 211
7.2 Protection Configuration for HV Matching Transformer 212
7.3 Protection Configuration of Co-phase Power Supply Device 221
References 227
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Reliability Assessment and Enhancement Techniques for the Co-phase Power Supply Device
