Electric motor control with integral battery charger
US5500579A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1995 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Jan 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electric motor control with integral battery charger includes battery terminals (201) for connection to a battery (203). A boost converter circuit (111) is coupled to an armature winding (209) of the electric motor (117), and has an input (131) coupled to a power source (211). A buck converter circuit (105) is coupled to a field winding (207) of the electric motor (117), and an input (133) coupled to the power source (211). A controller (205), is coupled to the battery terminals (201) and the power source (211). The controller (205) couples a boost output (107) of the boost converter circuit (111 ) to the battery terminals (201) while a terminal voltage of the power source (211) is lower than a terminal voltage of the battery (203) measured at the battery terminals (201), and couples a buck output (107) of the buck converter circuit (105) to the battery terminals (201 ) while the terminal voltage of the power source (211) is higher than the terminal voltage of the battery (203).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.