Power Electronics

Power electronics

HYBRID DRIVE with A LOW-TEMPERATURE CIRCUIT

Issued January 19, 2010

United States Patent 7,649,273

A hybrid drive unit for a motor vehicle with an internal combustion engine and at least one electric machine optionally operable as a motor or as a generator, has a charge air compressor for compression of combustion air supplied to the internal combustion engine and a charge air cooler for cooling the combustion air. The hybrid drive unit has a low-temperature cooling circuit carrying a liquid coolant, is designed separately from a high-temperature cooling circuit of the internal combustion engine, and has a heat exchanger for cooling the coolant.

Inventors: Zillmer; Michael (Sickte, DE), Pott; Ekkehard (Gifhorn, DE), Holz; Matthias (Lehre, DE), Hladun; Marc (Braunschweig, DE)

Assignee: Volkswagen Aktiengesellschaft (Wolfsburg, DE)

Appl. No.: 11/538,998

Filed: October 5, 2006

POWER SUPPLY FOR ELECTROSTATIC PRECIPITATOR

Issued January 19, 2010

United States Patent 7,649,753

An exemplary embodiment of the disclosure pertains to a high-voltage ac-dc converter converting alternating input current into high-voltage direct current to be provided to a load, e.g. for powering an electrostatic precipitator. The converter includes at least one unit for the conversion of the ac input current into high-frequency ac current, at least one transformer for adapting the high-frequency ac current to requirements of the load. A series-loaded resonant tank is provided between at least one unit and at least one transformer.

Inventors: Ranstad; Per Anders Gustav (Vaexjoe, SE)

Assignee: Alstom Technology Ltd (Baden, CH)

Appl. No.: 11/812,888

Filed: June 22, 2007

DIGITAL POWER MANAGER FOR POL REGULATORS

Issued January 12, 2010

United States Patent 7,646,382

A power-control system comprises a plurality of point-of-load (POL) regulators, each adapted to convey regulated power to a load, a serial data bus operatively connecting the plurality of POL regulators, and a digital power manager connected to the data bus. The digital power manager includes a controller adapted to execute stored instructions to program operational parameters of the plurality of POL regulators via the serial data bus and receive monitoring data from the plurality of POL regulators via the serial data bus. The digital power manager further comprises a user interface, such as an I2C interface, adapted to receive programming data from there from and send monitoring data thereto. The digital power manager further comprises a non-volatile memory containing a plurality of registers, including a digital power manager configuration register containing data values defining a configuration of the power control system, a POL set-up register reflecting the programming state of one of the POL regulators, a POL monitor register containing data values reflecting status of operating conditions within one of the POL regulators, and a user-definable space.

Inventors: Chapuis; Alain (Morgan Hill, CA), Guz; Mikhail (Daly City, CA)

Assignee: Power-One, Inc. (Camarillo, CA)

Appl. No.: 11/932,796

Filed: October 31, 2007

METHOD TO REDUCE SWITCH POWER CONSUMPTION

Issued January 12, 2010

United States Patent 7,646,216

An apparatus and method of reducing power consumption across a switch, such as a non-programmed anti-fuse, is provided. The invention applies to anti-fuses, other switches such as transistor-based switches, (e.g., FLASH, EEPROM, and/or SRAM), and other devices exhibiting a leakage current, especially during a sleep or stand-by mode. During a sleep mode, such switches or other devices may be uncoupled from signals driving the switches, then terminals of each switch may be coupled to a common potential or allowed to float to a common potential.

Inventors: Shiao; Wilma Waiman (San Jose, CA), Yao; Stephen U. (Markham, CA), Yap; Ket-Chong (San Ramon, CA)

Assignee: QuickLogic Corporation (Sunnyvale, CA)

Appl. No.: 11/563,632

Filed: November 27, 2006

SENSOR CALIBRATION AND PARAMETER IDENTIFICATION IN A MULTI-PHASE MOTOR DRIVE

Issued January 12, 2010

United States Patent 7,646,160

In a multi-phase motor drive that includes a bus capacitor, a multi-phase motor, a multi-phase inverter, multiple switches each having an on- and off-state, and multiple current sensors each being in series with respective phase winding, a method for checking the accuracy of circuit parameters of the motor drive includes using the switches to produce a first loop that includes the capacitor bank, a first phase winding, a first current sensor, a second phase winding, and a second current sensor, using the current sensors to determine a magnitude of current in the first and second phase windings, comparing a magnitude of current indicated by the first current sensor and the second current sensor, and determining a magnitude of a difference between the current in the first and second phase windings.

Inventors: Chen; Chingchi (Ann Arbor, MI), Wang; Jin (Northville, MI), Degner; Michael W. (Novi, MI)

Assignee: Ford Global Technologies, LLC (Dearborn, MI)

Appl. No.: 11/796,081

Filed: April 26, 2007

FULL- AND HALF-BRIDGE-COMPATIBLE DRIVER TIMING SCHEDULE FOR DIRECT-DRIVE BACKLIGHT SYSTEM

Issued January 12, 2010

United States Patent 7,646,152

A driver circuit or controller flexibly drives either a half-bridge or full-bridge switching network in a backlight inverter without modification, redundant circuitry or additional components. The driver circuit includes four outputs to provide four respective driving signals that establish a periodic timing sequence using a zero-voltage switching technique for semiconductor switches in the switching network.

Inventors: Chiou; Chii-Fa (Lake Forest, CA)

Assignee: Microsemi Corporation (Irvine, CA)

Appl. No.: 11/526,324

Filed: September 25, 2006

LED PACKAGE METHODS AND SYSTEMS

Issued January 12, 2010

United States Patent 7,646,029

Methods and systems are provided for LED modules that include an LED die integrated in an LED package with a sub-mount that includes an electronic component for controlling the light emitted by the LED die. The component integrated in the sub-mount may include drive hardware, a network interface, memory, a processor, an SMPS, a power facility, or other component.

Inventors: Mueller; George G. (Boston, MA), Dowling; Kevin J. (Westford, MA), Morgan; Frederick M. (Quincy, MA), Lys; Ihor A. (Milton, MA)

Assignee: Philips Solid-State Lighting Solutions, Inc. (Burlington, MA)

Appl. No.: 11/178,214

Filed: July 8, 2005

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish