Generally not. In a capacitor single-phase motor the phase shift of the auxiliary winding is provided by the capacitor, and this arrangement is designed for a single mains frequency. As the frequency changes, the effect of the capacitor changes too, and starting and running behaviour deteriorates. Standard inverters also give a three-phase output, and the fast voltage pulses at the output stress the capacitor.

In a workshop with a single-phase supply that needs speed adjustment, the usual route is:

  • Select an inverter with single-phase 230 V input and 3 × 230 V output.
  • Connect a three-phase motor rated 230/400 V in delta.
  • Select the inverter output current according to the 230 V connection current on the motor nameplate.

Single-phase-input inverters are mostly available in small ratings; the achievable power limit should be checked in the inverter manufacturer's catalogue. On the supply side, the single-phase line must also be able to carry the inverter input current.

If the machine runs at a fixed speed and no speed adjustment is wanted, single-phase 220 V electric motors are a separate option.