Current detector of inductive load
US8803497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2010 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | May 15, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current detector of an inductive load includes: an inductive load 100; a switching element 101 connected in series with the inductive load and controls an electric current to be carried through this inductive load by ON/OFF operation; a current circulating diode 102 connected in parallel with the inductive load and circulates an electric current of the inductive load when the switching element is OFF; current detecting device 103 making a sampling in a cycle of a predetermined sampling period to detect an electric current to be carried through the switching element 101; and current correction device 104 making a correction with respect to an electric current value having been detected at the current detector, and in which the current correction device 104 changes the correction rate based on DUTY of a pulse with which the switching element is brought in ON/OFF operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.