Inverter-drive controlling apparatus
US4587605A · kind A · utility
35Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1985 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Jan 17, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a controlling apparatus for a simulated sinusoidal wave of unequal width PWM inverter, wherein PWM signal comprises a data region and a HALT region in each of carrier period timer, the carrier period timer T.sub.0 and data unit timer T.sub.2 are controlled by each other independent digital values by each other independent microcomputers (5, 6) or by use of each other different timers (10, 11), and the data unit timer T.sub.2 is controlled by an output of a power source voltage fluctuation detector (18), thereby to provide a constant voltage-frequency characteristic even at voltage fluctuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.