Patent ID: 9379640
Filing Date: 2016-06-28
CPC Classification: H02M

Claim Text:
1. A single-stage DC/AC power converter, comprising: at least two bi-directional converter modules connected in differential configuration, each of said two bi-directional converter modules having primary and secondary sides separated by transformers and including inductors for current flow and energy storage, wherein each of the two bi-directional converter modules comprises transformers and inductors that are integrated on one or more cores; switches controlling current flow in the primary and secondary sides to create positive and negative half cycle AC current to an output on said secondary side from a DC power source on said primary side or controlling current flow in the primary and secondary sides to create AC output on said primary/secondary side from an AC power source on said secondary/primary side; a loop controller having an outer voltage loop and an inner current loop with a first modulator that controls modulation of said switches via a second modulator referenced by said inner current loop, wherein one or both of said outer voltage loop and said inner current loop include a fundamental frequency compensator and a plurality of harmonic frequency compensators, and further including different fundamental and harmonic voltage loop references for outer loop control.