Motor controller
US10063168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2017 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Feb 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller includes an inverter configured to convert a direct current to an alternating current, a control unit that generates a PWM signal for driving the inverter in response to a motor drive command from an external device, and a safety circuit arranged between the inverter and the control unit. The inverter includes an upper switching element and a lower switching element. The safety circuit includes logic gates which are provided corresponding to the upper switching element and the lower switching element, respectively and each of which has two or more inputs to cut off the PWM signal based on a safety input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.