The document describes 180 degree and 120 degree conduction modes of an inverter. For the 180 degree mode: - The switches (S1-S6) are closed for 180 degree intervals in a predetermined sequence to avoid short circuits. S1 is closed from 0-180 degrees, S3 from 120-300 degrees, and S5 from 240-60 degrees. For the 120 degree mode: - The operation is similar except switches are closed for 120 degree intervals instead of 180. S1 is closed from 0-120 degrees, S3 from 120-240 degrees, and S5 from 240-360 degrees. The 120 degree mode provides a 60 degree commutation interval to safely