As a result of their reduced number of switches, three-phase four-switch (TPFS) inverters are generally applied as cost-reduction topologies for permanent magnet synchronous motor (PMSM) drives.

A novel pulse-width modulation (PWM) method for this improved inverter topology is then proposed for reactive power generation. The ground-loop voltage of this inverter under the proposed PWM method ...

For each given pulse width, amperage was titrated upwards in 0.5 mA increments every 60 s. At longer pulse widths of 210us and 260us, she reported side effects– feeling “clammy and sweaty” and ...