Scholarlink

This chapter examines fault characteristics and self-clearing principles for different MMC topological structures under AC/DC conditions. The discussion covers several key topics: MMC short-circuit current characteristics during AC-side faults; calculation methods for HMMC short-circuit current with half-bridge submodules during DC-side faults; and self-clearing principles through submodule blocking for FMMC, CMMC, and FHMMC during DC-side faults. It also analyzes the common features and costs of three MMC types with DC-side fault self-clearing capability. The chapter concludes by exploring FHMMC operations with reduced DC voltage, direct fault current control principles, a performance comparison of different fault-clearing methods, and recommendations for MMC topologies with self-clearing capabilities.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Analysis of AC/DC Fault Characteristics and DC-Side Fault Self-clearing Principle of MMC

  • 章节

  • 发表日期：

    2025年

查看全文
  • Zheng Xu,
  • Huangqing Xiao,
  • Zheren Zhang

摘要

This chapter examines fault characteristics and self-clearing principles for different MMC topological structures under AC/DC conditions. The discussion covers several key topics: MMC short-circuit current characteristics during AC-side faults; calculation methods for HMMC short-circuit current with half-bridge submodules during DC-side faults; and self-clearing principles through submodule blocking for FMMC, CMMC, and FHMMC during DC-side faults. It also analyzes the common features and costs of three MMC types with DC-side fault self-clearing capability. The chapter concludes by exploring FHMMC operations with reduced DC voltage, direct fault current control principles, a performance comparison of different fault-clearing methods, and recommendations for MMC topologies with self-clearing capabilities.