AC-AC/DC converter
US6067243A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 18, 1999 |
| Grant date | May 23, 2000 |
| Priority date | — |
| Expiry date | Mar 18, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/225
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC-AC/DC converter for converting an AC input or an AC input voltage-divided by a capacitor into a high frequency AC. The converter includes a modulator for turning bi-directional AC switches on and off to convert the AC input or the AC input voltage-divided by the capacitor into a high frequency AC; a high frequency transformer for varying a voltage ratio of the high frequency AC; bi-directional AC switches for demodulating an output from the high frequency transformer into an AC output or rectifying the output into a DC output; a high frequency filter for removing high frequency components from the AC or DC output; and a control unit for controlling the AC switches using a pulse width or pulse phase modulation technique. Through the bi-directional AC switches, the converter can sequentially control an AC or DC input such that the AC or DC output has a value in a range from a maximum value of the positive phase or polarity, passing through zero, to the maximum value of the negative phase or polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.