|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||318/375 ; 318/370|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 48 인용 특허 : 0|
A control system for an electric machine powered from a DC source, wherein controlled motoring and controlled braking are achieved with a single current regulator control, even when the DC source cannot accept charging current and/or the induced motor voltage exceeds the DC bus voltage. The motor control circuit comprises a DC source connected to a DC bus, a current control circuit for modulating switching devices connected across the DC bus, an energy exchange capacitor connected across the DC bus, a load resistor, a switching circuit effective when act...
Control apparatus for a DC-fed motor control system, comprising: an electric machine having an armature winding; a rechargeable source of DC normally connected to a DC bus; DC bus switching means connecting the armature winding to the DC bus, including transistor means for supplying current to the armature winding from the DC bus, and rectifier means for returning current from the armature winding to the DC bus; current control means for modulating the transistor means (1) during a motoring mode of operation to control the current supplied to the armatur...