Inverter control device
US5872710A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1998 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Feb 17, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current detecting circuit (19) detects an output voltage of an inverter, a voltage error computing unit (21) computes an voltage error between the output voltage and a voltage command value, a deadtime compensation amount storage unit (18) stores a relationship between the voltage error, and an output current value detected by a current detecting circuit (20). A deadtime compensation computing unit (17) computes a deadtime compensation amount from the deadtime compensation amount storage unit (18) according to a current command value, and an adder (16) adds the deadtime compensation amount and the voltage command value so as to obtain the added correcting voltage command value. The operation of the inverter is controlled on the basis of the computed correcting voltage command value which enables inverter control devices to accurately control output current due by accurate correction of the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.