A Novel Single-Three Phase Inverter Adopting CTA Scheme

摘要

A new switch-linearity hybrid power conversion (CTA) technique is introduced to combine with a conventional single-three phase inverter, so that the effect on three phases' unbalance can be minumized, also the harmonic contents on load and torque ripples on the motor. Experiments show that the proposal system can operate in audio switch frequency range but no audio noise from the motor load, which is benefit of human's health, lasts the power devices' life, also qualifies the processing matched to the motor's operation.