Circuit arrangement for simulating alternating current load
US6218853A · kind A · utility
Inventor
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/293
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement for simulating an alternating current load. The simulating circuit includes a current waveform generating circuit capable of generating a phase control signal with a phase angle coherent, lagged, or leading to that of the alternating current power source voltage. A voltage and current phase control circuit generates a first and second switching control signals according to the phase control signal generated by the current waveform generating circuit and a series of counting pulses generated by a voltage zero-crossing detecting circuit. The switching control signals are used to control a switch circuit so as to generate a power source current with a phase angle coherent, lagged, or leading to the phase angle of the power source voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.