Overall Size Optimization of a High-Speed Starter Using a Quasi-Z-Source Inverter

In new generation of more electric aircrafts, dc-bus voltage is variable due to the variable speed generator. This implies constrains to design the actuator for the lowest dc voltage value. In case of permanent magnet synchronous machine (PMSM) starter supplied by a conventional power topology (LC input filter-voltage-source inverter), the torque constant should be low enough to ensure the controllability of the phase currents. This leads to …