Hybrid energy off highway vehicle electric power management system and method
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United States of America Patent
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Issued Date -
Jan 12, 2006
app pub date -
Jul 13, 2005
filing date -
Mar 27, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An energy management system for use with a hybrid energy off highway vehicle. The off highway vehicle includes a primary energy source and a power converter driven by the primary energy source for providing primary electric power. A traction bus is coupled to the power converter and carries the primary electric power. A traction drive is connected to the traction bus. The traction drive has a motoring mode in which the traction drive is responsive to the primary electric power for propelling the off highway vehicle. The traction drive has a dynamic braking mode of operation wherein said traction drive generates dynamic braking electrical energy. The energy management system includes an energy management processor for determining a power storage parameter and a power transfer parameter. An energy storage system is connected to the traction bus and is responsive to the energy management processor. The energy storage system selectively stores electrical energy as a function of the power storage parameter and selectively supplying secondary electric power from the stored electrical energy to the traction bus as a function of the power transfer parameter.
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