DC/AC power converting apparatus including DC component remover
US5012400A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1989 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Sep 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4803
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a DC/AC power converting apparatus, a DC component is removed from an AC output. The DC/AC power converting apparatus includes: a DC source for supplying DC power; a DC/AC inverter circuit for inverting the DC power into AC power; a transformer for transforming the AC power to obtain desirable AC power; a detector for detecting an output signal derived from the DC/AC inverter circuit to produce an output detection signal; a calculation circuit for performing a control calculation to enable the output detection signal to follow a reference signal, whereby a first output instruction signal is derived; and, a DC component remover for removing a DC component from the first output instruction signal to derive a second output instruction signal inverting operation of the DC/AC inverter circuit is controlled based upon the second output instruction signal to prevent DC magnetization of the transformer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.