VF-input and high-frequency matrix converter - recent development and evaluation

The proposed VF-input matrix converter accepts a wide frequency variation of input power. For many applications of on-board power generation systems or distributed power systems, this new capability of one-stage VF-VF conversion eliminates a conventional speed regulation stage between the shafts of engine and alternator, thus improving the energy conversion efficiency. The converter is 100% regenerative with no DC-link and has high power density. New capability operating at hundred hertz of fundamental frequencies at both input and output sides of the converter is also developed and demonstrated. The high frequency excitation further reduces the size and weight of the generating and motoring apparatus. The system has good potential to support multiple applications.