Development of Power Converter for High Power Piezoelectric Motors.

Several types of piezoelectric motors are known to deliver few watts of mechanical output power.This paper deals with the design and development of a LLCC-resonant converter for a novel type ofhigh power piezoelectric motor of up to 4kW mechanical power being used in avionics. The devel-opment of a laboratory power supply became necessary, since suitable power supplies for testingthe novel piezoelectric motor during its breadboard stage are not available on the market. The gen-eral function of the LLCC-resonant converter which also provides a DC-offset voltage for avoidingdepolarisation problems is described, implementation highlights are outlined and the weight distri-bution is discussed with respect to future development of power converters for avionics.