| 摘要 |
<p>A combined drive circuit (102) for a split brake system of a motor vehicle has a switched reluctance motor and a brush motor. The switched reluctance motor has multiple phase windings. The combined drive circuit includes a DC power source with first (202) and second (204) supply buses. A SR motor driver (110) supplies current to the switched reluctance motor. The SR motor driver (110) has a first capacitor (208) coupled to the phase windings for storing energy from the phase windings and a second capacitor (210) coupled to the first capacitor and a third supply bus (206), thereby developing a third supply bus voltage across the second capacitor. A brush motor driver (108) is coupled to the first (208) and second (210) capacitor. The SR motor driver is adapted to supply current to the brush motor. The brush motor driver (108) includes first (248), second (250), third (252) and fourth (254) switching elements coupled to the brush motor.</p> |
