Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural – diverse or diversely controlled sources of armature...
Reexamination Certificate
2007-04-24
2007-04-24
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural, diverse or diversely controlled sources of armature...
C318S400260, C180S065310, C180S065510, C180S065510, C307S048000, C307S063000, C307S066000
Reexamination Certificate
active
11264430
ABSTRACT:
The present invention is an electric vehicle power system that uses multiple permanent magnet motor/generators connected in series or parallel and multiple battery step switching. Motor, torque and speed are controlled by steps in series connection and then in parallel connection. Smooth acceleration, regeneration and current control are provided by delaying stepping from one battery step to the next until the next step is fully engaged. Transients are limited to the effect of one battery step by using rectifier shunt switching. Multiple motors provide acceleration torque at low speed in series connections and at cruising speeds in parallel connection. Regenerative deceleration is provided in the opposite manner. Battery depletion is averaged by flipping ends of a battery bank. Controls are provided with normal foot controls and a speed setter. A separate deceleration pedal or lever may be used.
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Creighton Wray James
Leykin Rita
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