Chopper control system
US4084119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1976 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Mar 4, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A chopper control system for controlling the amount of power supplied from a DC power source to a load having inductance. The chopper control system comprises a chopper circuit for accomplishing the on-off control of main current flowing from a DC power source to a load having inductance, and a duty cycle control circuit for controlling the duty cycle of the chopper circuit. A flywheel circuit including a series-connected circuit of a flywheel diode and a reactor is connected in inverse parallel with the load. The counter electromotive force induced in the flywheel circuit is detected by a detecting circuit and the output of the detecting circuit is applied to the duty cycle control circuit to prevent the main current from exceeding a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.