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US 7,385,372 B2Granted
Auxiliary bus system
AssigneesSiemens Energy & Automation, Inc., Siemens Atkiengesellschaft
InventorsRaed H. Ahmad, Ekkehard Pittius
Life of this patent
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Abstract
Certain exemplary embodiments can comprise a system comprising an electric drive system for a machine. The system can comprise a rectifier adapted to convert AC power from an alternator to DC power. The system can comprise an inverter adapted to receive DC power from the rectifier and provide power to a traction motor and/or auxiliary devices. Certain exemplary embodiments can comprise a system and method for dissipating excess energy from a machine.
Claims24
A system comprising:
- an auxiliary power system adapted for an off-road traction vehicle, comprising:
- an active rectifier comprising an Insulated Gate Bipolar Transistor, said active rectifier a self-commutated infeed/regenerative feedback unit, said active rectifier adapted to receive a first AC signal from an alternator and provide a first DC signal to a DC bus;
- and
- an active Insulated Gate Bipolar Transistor inverter adapted to receive the first DC signal from the DC bus and provide a second AC signal to an auxiliary device;
- wherein the second AC signal is a space vector modulated AC signal, said space vector modulated AC signal based upon a sampling interval that is smaller than approximately one sixth of a cycle of a target output fundamental, Insulated Gate Bipolar Transistors of said active Insulated Gate Bipolar Transistor inverter adapted to be switched via an application of each of two active vectors for a predetermined sub-interval of said sampling interval.
2 more elements
A system comprising:
- an auxiliary power system adapted for a mining haul truck, comprising:
- an active rectifier comprising an Insulated Gate Bipolar Transistor, said active rectifier a self-commutated infeed/regenerative feedback unit, said rectifier adapted to receive a first AC signal from an alternator and provide a first DC signal to a DC bus;
- and
- an active Insulated Gate Bipolar Transistor inverter adapted to receive the first DC signal from the DC bus and provide a second AC signal to an auxiliary device;
- wherein the second AC signal is a space vector modulated AC signal, said space vector modulated AC signal based upon a sampling interval that is smaller than approximately one sixth of a cycle of a target output fundamental, Insulated Gate Bipolar Transistors of said active Insulated Gate Bipolar Transistor inverter adapted to be switched via an application of each of two active vectors for a predetermined sub-interval of said sampling interval.
2 more elements
A system comprising:
- an auxiliary power system adapted for an off-road traction vehicle, comprising:
- an active Insulated Gate Bipolar Transistor inverter adapted to receive a first DC signal from a DC bus and provide an AC signal to an auxiliary device;
- and
- an active Insulated Gate Bipolar Transistor DC chopper adapted to receive the first DC signal from the DC bus, said active Insulated Gate Bipolar Transistor DC chopper adapted to provide a second modulated DC signal to a heat sink;
- wherein the AC signal is a space vector modulated AC signal, said space vector modulated AC signal based upon a sampling interval that is smaller than approximately one sixth of a cycle of a target output fundamental, Insulated Gate Bipolar Transistors of said active Insulated Gate Bipolar Transistor inverter adapted to be switched via an application of each of two active vectors for a predetermined sub-interval of said sampling interval.
2 more elements
A system comprising:
- an auxiliary power system adapted for a vehicle, comprising:
- an active Insulated Gate Bipolar Transistor inverter adapted to receive a first DC signal from a DC bus and provide an AC signal to an auxiliary device, the AC signal a space vector modulated signal, the space vector modulated signal having a vector scale in a space vector domain that is three fourths of a modulating depth for each phase voltage;
- and
- an active Insulated Gate Bipolar Transistor DC chopper adapted to receive the first DC signal from the DC bus, said active Insulated Gate Bipolar Transistor DC chopper adapted to provide a second modulated DC signal to a heat sink.
1 more element
Dependencies are inferred from the claim text.