The current mode ac / ac variable frequency converters with high frequency ac link are also presented in the thesis the current mode ac / ac converters with high frequency ac link have the advantages such as simple topology, two-stage power conversions, bidirectional power flow, high frequency electrical isolation, strong load adapting ability, suit for low power conversion fields 论文对这类变换器实现acac变频变换作了初步探讨。这类换器具有电路拓扑简洁、两级功率变换(lfachfaclfac)、双向功率流、高频电气隔离、网侧电流波形好、负载适应能力强、适合于小功率变换场合等特点。