# US 7,609,024 B2 · Auxiliary bus method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,609,024 B2 - Document ID: US7609024B2 - Status: Granted - Kind: B2 - Application number: 11/139,736 - Filed: 2005-05-27 - Published: 2006-01-05 - Granted: 2009-10-27 - Earliest claimed: 2004-05-27 - Assignees: Siemens Energy & Automation, Inc. - Inventors: Raed H. Ahmad; Ekkehard Pittius - Web page: https://patentgrep.com/patent/US7609024B2 ## CPC - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - B60K 6/46: Series type - B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors} - B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors} - B60L 15/007: {Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles} - B60L 15/025: {using field orientation; Vector control; Direct Torque Control [DTC]} - B60L 50/13: using AC generators and AC motors - B60L 50/16: with provision for separate direct mechanical propulsion - B60L 50/51: characterised by AC-motors - B60L 50/61: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles - H02P 5/74: controlling two or more AC dynamo-electric motors (H02P5/46, H02P5/60 take precedence) - H02P 25/22: Multiple windings; Windings for more than three phases - H02P 29/40: Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load - B60K 1/02: comprising more than one electric motor - B60K 2001/003: {with means for cooling the electrical propulsion units} - B60L 2200/26: Rail vehicles - B60L 2200/40: Working vehicles - B60L 2210/20: AC to AC converters - B60L 2210/40: DC to AC converters - B60L 2210/46: with more than three phases - B60L 2220/58: with more than three phases - B60L 2270/145: Structure borne vibrations - B60L 2270/20: Inrush current reduction, i.e. avoiding high currents when connecting the battery - Y02T 10/62: Hybrid vehicles - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## 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. ## Claims ### Claim 1 A method comprising: at an auxiliary power system for an off-road traction vehicle, comprising: via an active Insulating Gate Bipolar Transistor rectifier, converting a first AC signal to a DC signal and providing the DC signal to a DC bus; via an active Insulating Gate Bipolar Transistor inverter electrically coupled to the DC bus, converting the DC signal to a second AC signal and providing the second AC signal to an auxiliary device; and receiving the DC signal at an active Insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus. ### Claim 2 (depends on 1) The method of claim 1, further comprising: from an alternator, receiving the first AC signal at the active Insulating Gate Bipolar Transistor rectifier. ### Claim 3 (depends on 1) The method of claim 1, further comprising: from an alternator coupled to an internal combustion engine, receiving the first AC signal at the active Insulating Gate Bipolar Transistor rectifier. ### Claim 4 (depends on 1) The method of claim 1, wherein: the active Insulating Gate Bipolar Transistor DC chopper is adapted to modulate unmodulated DC current. ### Claim 5 (depends on 1) The method of claim 1, wherein the active Insulating Gate Bipolar Transistor rectifier provides the DC signal to the DC bus at a voltage of approximately 1800 volts. ### Claim 6 (depends on 1) The method of claim 1, further comprising: supplying the second AC signal to an auxiliary device via a transformer electrically coupled to the active Insulating Bipolar Transistor inverter. ### Claim 7 (depends on 1) The method of claim 1, further comprising: supplying the second AC signal to an auxiliary device via a sinusoidal filter electrically coupled to said active Insulating Bipolar Transistor inverter. ### Claim 8 (depends on 1) The method of claim 1, wherein: supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 5%. ### Claim 9 (depends on 1) The method of claim 1, wherein: supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 3%. ### Claim 10 (depends on 1) The method of claim 1, wherein: supplying the second AC signal to an auxiliary device via a filter-less system adapted to limit harmonic current distortion to approximately 2%. ### Claim 11 (depends on 1) The method of claim 1, wherein: via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 0.98. ### Claim 12 (depends on 1) The method of claim 1, wherein: via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 0.99. ### Claim 13 (depends on 1) The method of claim 1, wherein: via the active Insulating Gate Bipolar Transistor rectifier, providing the DC signal with an active input power factor of approximately 1.0. ### Claim 14 (depends on 1) The method of claim 1, wherein the second AC signal is space vector modulated. ### Claim 15 (depends on 1) The method of claim 1, wherein the second AC signal is a sine wave Pulse Wave Modulated DC voltage. ### Claim 16 (depends on 1) The method of claim 1, wherein the second AC signal is a sine wave output signal with less than approximately 5% total harmonic distortion. ### Claim 17 (depends on 1) The method of claim 1, wherein the second AC signal has a frequency of approximately 60 Hz. ### Claim 18 (depends on 1) The method of claim 1, wherein the second AC signal has a frequency of approximately 90 Hz. ### Claim 19 (depends on 1) The method of claim 1, wherein the second AC signal has a frequency of approximately 120 Hz. ### Claim 20 (depends on 1) The method of claim 1, wherein: the Insulating Gate Bipolar Transistor rectifier lacks a filter. ### Claim 21 A method comprising: at a mining haul truck: via an active Insulating Gate Bipolar Transistor rectifier, converting a first AC signal to a DC signal and providing the DC signal to a DC bus; via an active Insulating Gate Bipolar Transistor inverter electrically coupled to the DC bus, converting the DC signal to a second AC signal and providing the second AC signal to an auxiliary device; and receiving the DC signal at an active insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus. ### Claim 22 A method comprising a plurality of activities, said activities comprising: from an alternator, receiving a first AC signal at an active Insulating Gate Bipolar Transistor rectifier; and via the active Insulating Gate Bipolar Transistor rectifier, providing a DC signal to an active Insulating Gate Bipolar Transistor inverter adapted to provide a second AC signal to an auxiliary power system; and receiving the DC signal at an active Insulating Gate Bipolar Transistor DC chopper, the active Insulating Gate Bipolar Transistor DC chopper electrically coupled to the DC bus.