Patent
Control system for a hybrid vehicle
Piotr Drozdz,Douglas Yip +1 more
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TLDR
In this paper, a control system for a hybrid vehicle ensures the best possible utilization of onboard energy resources for different operating conditions of the vehicle by modifying a strategy modified in real time depending on the input from sensors measuring vehicle speed, the current and voltage levels at different locations in the system.Abstract:
A control system for a hybrid vehicle ensures the best possible utilization of onboard energy resources for different operating conditions of the vehicle. The control system utilizes a strategy modified in real time depending on the input from sensors measuring vehicle speed, the current and voltage levels at different locations in the system. The vehicle has an auxiliary power unit, at least one energy storage device and at least one electric drive motor for traction. The vehicle has a high load driving condition, a low load driving condition and a regenerative braking condition. A voltage control sets system voltage to a charging voltage in the low load condition and regenerative braking condition, and sets system voltage to an output voltage from the energy storage device for the high load condition. A current control system sets output power from the auxiliary power unit to a charging level in the low load condition and regenerative braking condition, and sets the power level from the auxiliary power unit based on vehicle speed, motor load and state of charge of the energy storage device for the high load condition.read more
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Patent
Hybrid drive system
TL;DR: In this paper, a hybrid drive system for use in an electric vehicle comprising an electric motor generator for moving the vehicle, plural electrical energy sources in electric contact with electric motor/generator and a control source in electrical contact with the electrical sources include a variable-rate energy storage system, a low-rate storage system and a high-rate battery storage system is presented.
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