Very high power converters with ripple injection

开发了适合于非常高功率应用的新型功率转换器拓扑。该变换器由双主变换器、附加变换器和耦合电抗器组成。该系统的最大特点是主变换器可以在较低的开关频率下工作，即在较低的开关频率下工作。e.输出基频。附加的转换器可以以六倍于输出频率的开关频率工作。我们的研究表明，以下系统可以适用于实际应用：（a）一种新型的六相电压型逆变器系统，具有60步输出电压，（B）一种新型的六相电流型逆变器系统，具有36步输出电流，和（c）一个三相双整流系统，具有24步输入电压。

Novel power converter topologies which are suitable for very high-power applications are developed. The proposed converters consist of double main converters, an additional converter, and coupling reactors. The great feature of the systems is that the main converters can operate at lower switching frequencies, i. e. , output fundamental frequencies. The additional converter can operate at a switching frequency of six times the output one. Our studies have revealed that the following systems can be applicable for practical applications: (a) a novel six-phase voltage-source inverter system with 60-step output voltages, (b) a novel six-phase current-source inverter system with 36-step output currents, and (c) a three-phase double rectifier system with 24-step input voltages.