Patent application number | Description | Published |
20080258655 | HYBRID MOTOR BOOST SYSTEM AND METHODS - An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end and a second end. A boost link such as a battery or capacitor is configured to store electrical energy for subsequent retrieval and use by either electrical motor. A first inverter circuit includes a first grouping of switches, wherein each of the first group of switches couples one of the first ends of the windings to the power source. A second inverter circuit includes a second group of switches, each coupling one of the second ends of the windings to the boost link. A controller is coupled to activate each of the first and second groups of switches to thereby allow the electrical energy to be placed on and retrieved from the boost link. | 10-23-2008 |
20080258661 | INVERTER TOPOLOGY FOR AN ELECTRIC MOTOR - An inverter is provided for controlling application of voltage from a power source to a motor having a plurality of windings. The inverter includes a first set of one or more switching elements and a second set of one or more switching elements. The first and second sets of one or more switching elements are connected between a high voltage side and a low voltage side of the power source. Each of the first set of one or more switching elements is connected to one of a first set of nodes, where each of the first set of nodes is connected to a first winding end of one of the plurality of windings of the motor. Each of the second set of one or more switching elements is connected to one of a second set of nodes and each of the second set of nodes is connected to a second winding end of one of the plurality of windings. | 10-23-2008 |
20080303349 | TWO-SOURCE INVERTER - Systems and methods are disclosed for a two-source inverter. The systems and methods combines operation of a first voltage source powering a conventional single source inverter with second voltage source powering a novel switch configuration to power a load. The switch configuration is controlled by a plurality of control signals generated by controller based on a variety of control modes, and feedback signals. | 12-11-2008 |
20090009980 | CAPACITOR WITH DIRECT DC CONNECTION TO SUBSTRATE - A subcomponent is provided for a power inverter module. The apparatus comprises a capacitor having a terminal and integrated into a housing. A substrate is mounted on the housing. The substrate incorporates a power semiconductor switch and has at least one direct current (DC) tab. The direct current tab is directly connected to the terminal of the capacitor. | 01-08-2009 |
20090032316 | DOUBLE-ENDED INVERTER SYSTEM WITH ISOLATED NEUTRAL TOPOLOGY - Systems and methods are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The system comprises a motor having a first set of windings and a second set of windings. The first set of windings is electrically isolated from the second set of windings. The system further comprises a first inverter coupled to the first energy source and adapted to drive the motor, wherein the first set of windings are coupled to the first inverter. The system also comprises a second inverter coupled to the second energy source and adapted to drive the motor, wherein the second set of windings are coupled to the second inverter. A controller is coupled to the first inverter and the second inverter. | 02-05-2009 |
20090032319 | DOUBLE-ENDED INVERTER DRIVE SYSTEM FOR A FUEL CELL VEHICLE AND RELATED OPERATING METHOD - Systems and methods are provided for a double-ended inverter drive system for a fuel cell vehicle. An electric drive system for a vehicle comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled to the electric motor, and is configured to provide alternating current to the electric motor. A fuel cell is coupled to the first inverter to provide power flow from the fuel cell to the electric motor. A second inverter is coupled to the electric motor, and is configured to provide alternating current to the electric motor. An energy source is coupled to the second inverter to provide power flow between the energy source and the electric motor. A controller is coupled to the first inverter and the second inverter, and is configured to provide a constant power from the fuel cell during operation of the electric motor. | 02-05-2009 |
20090033156 | EFFICIENT OPERATING POINT FOR DOUBLE-ENDED INVERTER SYSTEM - Systems and methods are provided for controlling a double-ended inverter system coupled to a first energy source and a second energy source. The method comprises determining a constant power line associated with operation of the double-ended inverter system, the constant power line representing a desired power flow to the second energy source. The method further comprises determining an operating point on the constant power line, the operating point producing a minimum power loss in the double-ended inverter system for a required output current, and modulating the double-ended inverter system using a first voltage command and a second voltage command corresponding to the operating point. | 02-05-2009 |
20090033251 | SERIES-COUPLED TWO-MOTOR DRIVE USING DOUBLE-ENDED INVERTER SYSTEM - Systems and apparatus are provided for an inverter system for use in a vehicle. The inverter system comprises a six-phase motor having a first set of three-phase windings and a second set of three-phase windings and a three-phase motor having a third set of three-phase windings, wherein the third set of three-phase windings is coupled to the first set of three-phase windings and the second set of three-phase windings. The system further comprises a first energy source coupled to a first inverter adapted to drive the six-phase motor and the three-phase motor, wherein the first set of three-phase windings is coupled to the first inverter, and a second energy source coupled to a second inverter adapted to drive the six-phase motor and the three-phase motor, wherein the second set of three-phase windings is coupled to the second inverter. A controller is coupled to the first inverter and the second inverter. | 02-05-2009 |
20090033252 | DOUBLE ENDED INVERTER SYSTEM FOR A VEHICLE HAVING TWO ENERGY SOURCES THAT EXHIBIT DIFFERENT OPERATING CHARACTERISTICS - A double ended inverter system for an AC electric traction motor of a vehicle is disclosed. The inverter system serves as an interface between two different energy sources having different operating characteristics. The inverter system includes a first energy source having first operating characteristics associated therewith, and a first inverter subsystem coupled to the first energy source and configured to drive the AC electric traction motor. The inverter system also includes a second energy source having second operating characteristics associated therewith, wherein the first operating characteristics and the second operating characteristics are different, and a second inverter subsystem coupled to the second energy source and configured to drive the AC electric traction motor. In addition, the inverter system has a controller coupled to the first inverter subsystem and to the second inverter subsystem. The controller is configured to influence operation of the first inverter subsystem and the second inverter subsystem to manage power transfer among the first energy source, the second energy source, and the AC electric traction motor. | 02-05-2009 |
20090033253 | ELECTRIC TRACTION SYSTEM FOR A VEHICLE HAVING A DUAL WINDING AC TRACTION MOTOR - An electric traction system for a vehicle having a high voltage battery and a low voltage battery is provided. The system includes an AC electric motor and a double ended inverter system coupled to the AC electric motor. The AC electric motor has a first set of windings and a second set of windings that occupy common stator slots, where the first set of windings and the second set of windings are electrically isolated from each other. The double ended inverter system drives the AC electric motor using energy obtained from the high voltage battery and energy obtained from the low voltage battery. The double ended inverter system utilizes a first inverter subsystem coupled between the first set of windings and the high voltage battery, and a second inverter subsystem coupled between the second set of windings and the low voltage battery. | 02-05-2009 |
20090033254 | DOUBLE ENDED INVERTER SYSTEM WITH A CROSS-LINKED ULTRACAPACITOR NETWORK - A double ended inverter system for an AC traction motor of a vehicle includes a fuel cell configured to provide a DC voltage, an impedance source inverter subsystem coupled to the fuel cell, a DC voltage source, and an inverter subsystem coupled to the DC voltage source. The impedance source inverter subsystem, which includes an ultracapacitor, is configured to drive the AC traction motor. The inverter subsystem is configured to drive the AC electric traction motor. The ultracapacitor is implemented in a crossed LC network coupled to the fuel cell. | 02-05-2009 |
20090033255 | CHARGING ENERGY SOURCES WITH A RECTIFIER USING DOUBLE-ENDED INVERTER SYSTEM - Systems and methods are provided for charging energy sources with a rectifier using a double-ended inverter system. An apparatus is provided for an electric drive system for a vehicle. The electric drive system comprises an electric motor configured to provide traction power to the vehicle. A first inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A first energy source is coupled to the first inverter, wherein the first inverter is configured to provide power flow between the first energy source and the electric motor. A second inverter is coupled to the electric motor and is configured to provide alternating current to the electric motor. A rectifier is coupled to the second inverter and configured to produce a direct current output. The second inverter is configured to provide power from the rectifier to the electric motor. | 02-05-2009 |
20090033274 | SYSTEM FOR USING A MULTI-PHASE MOTOR WITH A DOUBLE-ENDED INVERTER SYSTEM - Systems and apparatus are provided for an inverter system for use in a vehicle having a first energy source and a second energy source. The inverter system comprises an electric motor having a first set of windings and a second set of windings. The inverter system further comprises a first inverter coupled to the first energy source and adapted to drive the electric motor, wherein the first set of windings are coupled to the first inverter. The inverter system also comprises a second inverter coupled to the second energy source and adapted to drive the electric motor, wherein the second set of windings are coupled to the second inverter. A controller is coupled to the first inverter and the second inverter to achieve desired power flow between the first energy source, the second energy source, and the electric motor. | 02-05-2009 |
20090033301 | POWER ELECTRONICS DEVICES WITH INTEGRATED GATE DRIVE CIRCUITRY - A power switch apparatus includes a substrate; a semiconductor die mounted on the substrate and including power electronics circuitry for a high power, alternating current motor application; and gate drive circuitry mounted on the substrate and electrically coupled to the power electronics circuitry on the semiconductor die. | 02-05-2009 |
20090033410 | POWER ELECTRONICS DEVICES WITH INTEGRATED CONTROL CIRCUITRY - A power switch apparatus includes a substrate; a semiconductor die mounted on the substrate and including power electronics circuitry for a high power, alternating current motor application; gate drive circuitry mounted on the substrate and electrically coupled to the power electronics circuitry on the semiconductor die; and control circuitry mounted on the substrate and electrically coupled to the gate drive circuitry. | 02-05-2009 |
20090034303 | DISCONTINUOUS PULSE WIDTH MODULATION FOR DOUBLE-ENDED INVERTER SYSTEM - Systems and methods are provided for controlling a double-ended inverter system having a first inverter and a second inverter. The method comprises determining a required output current and determining a desired second inverter current. The method further comprises determining a second inverter switching function, wherein only a selected leg in the second inverter is modulated at a duty cycle, determining a first inverter switching function based on the second inverter switching function, and modulating the first inverter and the second inverter using the first inverter switching function and the second inverter switching function. | 02-05-2009 |
20090034308 | DOUBLE ENDED INVERTER SYSTEM WITH AN IMPEDANCE SOURCE INVERTER SUBSYSTEM - A double ended inverter system suitable for use with an AC electric traction motor of a vehicle is provided. The double ended inverter system cooperates with a first DC energy source and a second DC energy source, which may have different nominal voltages. The double ended inverter system includes an impedance source inverter subsystem configured to drive the AC electric traction motor using the first energy source, and an inverter subsystem configured to drive the AC electric traction motor using the second energy source. The double ended inverter system also utilizes a controller coupled to the impedance source inverter subsystem and to the inverter subsystem. The controller is configured to control the impedance source inverter subsystem and the inverter subsystem in accordance with a boost operating mode, a traditional inverter operating mode, and a recharge operating mode of the double ended inverter system. | 02-05-2009 |
20090034310 | COMPACT TERMINAL ASSEMBLY FOR POWER CONVERTERS - A terminal assembly for a power converter is provided. The terminal assembly includes first and second conductive components and a current sensor. The first conductive component has first and second releasable attachment formations. The second conductive component has first and second portions with respective first and second widths. The first width is less than the second width. The first portion is releasably attached to the first conductive component with the second releasable attachment formation. The current sensor has an opening therethrough and is positioned between the first conductive component and the second portion of the second conductive component such that the first portion of the first conductive component extends through the opening. The current sensor is responsive to current flowing through the first portion of the second conductive component. | 02-05-2009 |
20090206687 | COOLING SYSTEMS AND METHODS FOR INTEGRATED ELECTRIC MOTOR-INVERTERS - Cooling systems and methods are provided for an integrated electric motor-inverter, where the integrated electric motor-inverter includes a housing, a motor, and an inverter, the motor and the inverter are disposed within the housing, and the motor includes a stator. The system includes a cooling jacket, a first coolant, a condenser, a spray head, and a second coolant. The cooling jacket is disposed concentric to the stator and includes an inner wall and an outer wall. The inner wall is in direct contact with the stator. The first coolant is disposed between the cooling jacket inner and outer walls. The condenser is disposed concentric to the cooling jacket. The spray head is disposed adjacent the inverter. The second coolant is in flow communication with the spray head. | 08-20-2009 |
20090230900 | CURRENT REGULATOR AND CURRENT CONTROL METHOD AND SYSTEM FOR AC MOTORS - Methods and systems are provided for controlling an AC motor via an inverter. The method includes determining a delay-compensated offset based on a synchronous frame current, producing a current error based on a synchronous frame current and a commanded current, producing a voltage error based on an anti-windup offset and the current error, producing a commanded voltage based on the delay-compensated offset and the voltage error, and providing the inverter with the commanded voltage. | 09-17-2009 |
20100090625 | AUTOMOTIVE SYSTEM AND POWER CONVERTER ASSEMBLY WITH A BRAKING CIRCUIT - An automotive system includes an electric motor, a direct current (DC) power supply coupled to the electric motor, a power converter including at least one conversion switch coupled between the electric motor and the DC power supply and a braking circuit coupled between the electric motor and the DC power supply, the braking circuit including a braking resistor and a braking switch, and a controller in operable communication with the electric motor, the DC power supply, the at least one conversion switch, and the braking switch. The controller is configured to operate the at least one conversion switch when the electric motor is mechanically actuated such that current flows from the electric motor to the DC power supply and selectively operate the braking switch when a braking parameter of the automotive system exceeds a predetermined threshold. | 04-15-2010 |
20100134058 | METHOD AND SYSTEM FOR CREATING A VIBRATION IN AN AUTOMOBILE - A method and system for operating an automotive electric motor having first and second components is provided. A desired frequency of vibration for the electric motor is selected. A current is caused to flow through at least one of the first and second components such that the second component moves relative to the first component. The current is modulated such that the motor vibrates at the desired frequency. | 06-03-2010 |
20100301786 | METHODS, SYSTEMS AND APPARATUS FOR CONTROLLING OPERATION OF TWO ALTERNATING CURRENT (AC) MACHINES - A system is provided for controlling two AC machines. The system comprises a DC input voltage source that provides a DC input voltage, a voltage boost command control module (VBCCM), a five-phase PWM inverter module coupled to the two AC machines, and a boost converter coupled to the inverter module and the DC input voltage source. The boost converter is designed to supply a new DC input voltage to the inverter module having a value that is greater than or equal to a value of the DC input voltage. The VBCCM generates a boost command signal (BCS) based on modulation indexes from the two AC machines. The BCS controls the boost converter such that the boost converter generates the new DC input voltage in response to the BCS. When the two AC machines require additional voltage that exceeds the DC input voltage required to meet a combined target mechanical power required by the two AC machines, the BCS controls the boost converter to drive the new DC input voltage generated by the boost converter to a value greater than the DC input voltage. | 12-02-2010 |
20100301787 | METHODS, SYSTEMS AND APPARATUS FOR CONTROLLING OPERATION OF TWO ALTERNATING CURRENT (AC) MACHINES - A system is provided for controlling two alternating current (AC) machines via a five-phase PWM inverter module. The system comprises a first control loop, a second control loop, and a current command adjustment module. The current command adjustment module operates in conjunction with the first control loop and the second control loop to continuously adjust current command signals that control the first AC machine and the second AC machine such that they share the input voltage available to them without compromising the target mechanical output power of either machine. This way, even when the phase voltage available to either one of the machines decreases, that machine outputs its target mechanical output power. | 12-02-2010 |