Electric vehicle motor and control system with high efficiency regeneration
OwnerJohn L. Earleinventor
Life of this patent
Estimating the term…
Loading patent…
OwnerJohn L. Earleinventor
Estimating the term…
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.
An electric vehicle motor and control system comprising:
An electric vehicle motor and control method comprising:
A vehicle electric drive system comprising a vehicle, wheels connected to the vehicle for supporting, moving and directing the vehicle, an electrical power source connected to the vehicle, multiple permanent magnet motor/regenerators mounted in the vehicle and connected to the wheels for moving the vehicle, wherein the power source further comprises a battery bank having multiple batteries and multiple step switches for selectively connecting multiple selected batteries of the battery bank to the power circuit, the step switches further comprising rectifiers connected between the batteries in the battery bank and the power circuit for continuing to provide power to the power circuit while a next step of the step switches closes to provide voltage change applied to the power circuit while reducing voltage change transients of switching to only one battery voltage value.
Dependencies are inferred from the claim text.