Dimensioning of Modular High Frequency converter for drives

In order to meet the requirements of future electric drive systems, new converter topologies are investigated. Because light weight is one of the main requirements, the passive components (DC-capacitors, chokes, EMI-filters) have to be reduced drastically [1]. Additional important points are fault tolerance [2], EMI limits and the industrial scalability of the system. These requirements cannot be met with standard topologies [3][4]. The Modular High Frequency converter (MHF) is a new inverter topology for electrical drive systems. It is well adapted to those future requirements, especially ultra-light weight, small volume, low losses, fault tolerance and an excellent dynamic behavior [5][6][7]. In order to optimize the drive system, using a MHF converter, a good adaption of the MHF converter to the parameters of the PM-Machine and vice versa is necessary. This paper deals with the design parameters and presents the dimensioning of the converter for a typical permanent magnet machine. First measurements of a laboratory prototype are depicted and the newest version of the power circuit is shown.