Patent ID: 8644037
Filing Date: 2014-02-04
Classification: H02M

Abstract:
1. A single-phase AC-AC converter for an AC source, comprising: a first rectifier section rectifying the AC source into a first pulsed DC link voltage signal; a high frequency modulating section coupled to said first pulsed DC link voltage signal and producing a high frequency AC voltage signal, wherein said high frequency AC voltage signal is a modulated waveform having substantially similar amplitude to said first pulsed DC link voltage signal and having a varying switching frequency to maintain a relatively constant flux; a high frequency transformer coupled to said high frequency AC voltage signal producing a transformed high frequency AC voltage signal; a second rectifier section coupled to said transformed high frequency AC signal and producing a second pulsed DC voltage signal; and an unfolder section coupled to said second pulsed DC voltage signal and producing an output AC signal.