The principle of PS-QR (Phase-Shifted Quasi-Resonate) circuit used for arc welding power source is discussed in the paper. Effect of some special circuit on the dynamics of PS converter are analyzed in details.
A ZCS QRC BUCK circuit with nonlinear inductor is proposed.
提出一种采用非线性电抗器的ZCS－QRC电路。
Compared to conventional hard-switched converters with fixed switching frequencies, the quasi-resonant converter (QRC) topology is a very attractive alternative for power supply designers.