Patent ID: 9590521
Date: 2017-03-07
CPC Classifications: H02M

Claim:
1. A method of converting power, comprising: determining an operating mode of a gas turbine engine selected, wherein the operating mode is selected from a group including a start mode and a generate mode; receiving AC power at a first set of phase legs; rectifying the received AC power into DC power using the first set of phase legs; receiving the rectified DC power at a second set of phase legs by flowing current through a DC link; and inverting the received DC power into AC power using the second set of phase legs, wherein at least one of the rectifying and inverting processes further includes switching respective outer switches of the first or second phase leg sets into an off state; wherein the received AC power is constant frequency AC power, current flows through the DC in a first direction, the inverted AC power is variable frequency AC power when the operating mode is the start mode; and wherein the received AC power is variably frequency AC power, current flows through the DC in a second direction opposite the first direction, and the inverted AC power is constant frequency AC power when the operating mode is the generate mode.