5. Output voltage of three-phase inverters

5.4. Voltage increase by zero-sequence component - principle


  • Non-rotating components can be used to increase the output voltage of the inverter.
  • Vector PWM (SVPWM) and PWM injecting the 3rd harmonic or sawtooth signal (TIPWM) work with the non-rotating component.
  • Both SVPWM and TIPWM lead to an equivalent output voltage - both modulations actively inject a non-rotating component in the form of a sawtooth signal.


Basic inverter voltage vectors for SVPWM


TIPWM (triangular signal injection PWM)