電力電子變換器機內輔助開關電源設計與實現

摘要：　　本文論述了峰值電流控制RCD箝位反激變換器的原理，并首次提出了RCD箝位等關鍵電路參數設計準則。設計并研制成功的15W 220V50HzAC/270VDC/+15VDC（0.8A）、-15VDC（0.15A）、+5VDC（0.2A）機內輔助開關電源具有功率密度高、變換效率高、過載與短路能力強、可靠性高等優良的綜合性能，在AC/AC、DC/AC、AC/DC、DC/DC等四類電力電子變換器中均具有重要應用價值。 敘詞：機內輔助開關電源 電力電子變換器 電流控制 RCD箝位 反激變換器 Abstract：　　The operation of RCD clamped flyback converter based on peak current control are presented，and the design criterion of the key parameters such as RCD clamp circuit is proposed. The designed and developed auxiliary switching power supply, i.e. 15W 220V50HzAC/270VDC/+15VDC（0.8A）、-15VDC（0.15A）、+5VDC（0.2A）, has excellent comprehensive performance such as high power density, high conversion efficiency, strong ability of overload and short circuit, high reliability. This auxiliary switching power supply has the important application value on ac/ac,dc/ac,ac/dc and dc/dc power converters. Keyword：auxiliary switching power supply, power converter, current control, RCD clamp,