Fault Tolerant Three-Phase AC Motor Drive Topologies： A Comparison of Features, Cost, and Limitations （To Continue）

• 来源期刊: 变频器世界
• 学科: 工学
• 关键词: FPRF 变频器 SOCF TRIAC
• 年，卷（期）: 2005,（4）
• 页码范围: 27-29
• 页数: 3页
• 分类号: TN773

摘要

C. Phase-Redundant Topology The ability to isolate a faulty phase-leg opens the possibility of introducing a spare inverter leg for improved fault tolerance as shown in Fig.8. The configuration will be referred to as the phase-redundant topology. This circuit topology incorporates the fault isolating SCRs and fuses in only the three active legs of the inverter. A spare fourth leg of the inverter is connected in place of the faulty phase-leg after the fault isolating devices have removed that leg from the system.