Voltage-source resonant inverters for linear piezoelectric ceramic motor

This article presents a comparison study of three voltage-source resonant driving schemes including an inductance-capacitance (LC) resonant inverter, an LLCC-resonant inverter and a LC-resonant inverter with energy feedback for a linear piezoelectric ceramic motor (LPCM). The effectiveness of three reported driving strategies is verified by numerical analyses and experimental results under the variation of loads. By way of experimental validation, the newly designed LC-resonant inverter with energy feedback for driving the LPCM possesses good performances of high voltage gain and invariant output characteristic.