Inverter system and inverter system control method

A control method for an inverter system, wherein the inverter system includes a level skip prevention control section configured to output a gate signal based on a voltage level command, and drive an inverter by the gate signal,

• the control method comprising performing a process at the level skip prevention control section, wherein the process includes:
• in response to an upward shift of an output voltage level of a first one of phases, set a counter for inhibiting upward shifting of the output voltage level of the first phase during a predetermined duration, and set a counter for inhibiting downward shifting of an output voltage level of a second one of the phases other than the first phase during a predetermined duration;
• and
• in response to a downward shift of the output voltage level of the first phase, set a counter for inhibiting downward shifting of the output voltage level of the first phase during a predetermined duration, and set a counter for inhibiting upward shifting of the output voltage level of the second phase during a predetermined duration.