Robert A Martinelli

US Patent:

6873134, Mar 29, 2005

Filed:

Jul 21, 2003

Appl. No.:

10/626219

Inventors:

Stanley Canter - Hermosa Beach CA, US
Winnie Choy - Cerritos CA, US
Robert Martinelli - Temecula CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

H01M010/44
H01M010/46

US Classification:

320118

Abstract:

An autonomous lithium-ion cell balancing system with integrated voltage monitoring includes a lithium-ion battery having a plurality of cells, a cell balancing circuit and a cell balancing control circuit. The heart of the cell balancing circuit is a plurality of gated cell balancing converters that are connected with the battery cells and a common share bus. Each gated lithium-ion cell balancing converter receives and input drive voltage and an input sample voltage and transfers energy from highly charged lithium-ion cells to the less charged lithium-ion cells, forcing all cells to have the same energy level. Further, the gated cell balancing converter provides a telemetry output voltage analog to an input cell voltage, eliminating the need for a separate cell voltage monitor.

US Patent:

46381767, Jan 20, 1987

Filed:

Aug 1, 1985

Appl. No.:

6/761471

Inventors:

Robert M. Martinelli - Torrance CA

Assignee:

Mullett Associates, Inc. - Los Angeles CA

International Classification:

H02J 900

US Classification:

307 64

Abstract:

An uninterruptible power supply provides for input sinewaves of an AC utility to be separated by diode rectifiers to apply positive half sinewaves on a plus d. c. line and negative half sinewaves on a minus d. c. line. A battery-powered high-frequency inverter forming a part of the power supply includes a full wave diode rectifier for applying bursts of positive going pulses having sinusoidally varying duty cycles on a plus d. c. bus and bursts of negative going pulses having sinusoidally varying duty cycles on a minus d. c. bus. The plus d. c. line and the plus d. c. bus are joined and connected by a first synchronous switch to a common junction and the minus d. c. line and the minus d. c. bus are joined and connected by a second oppositely phased synchronous switch to the same common junction. The inverter is driven by bursts of pulses having sinusoidally varying duty cycles generated by comparing the amplitudes of feedback output half sinewave signals and reference half sinewave signals.

US Patent:

46740198, Jun 16, 1987

Filed:

Apr 16, 1986

Appl. No.:

6/852566

Inventors:

Robert M. Martinelli - Torrance CA

Assignee:

Keller-Mullett Technology - Los Angeles CA

International Classification:

H02M 3335

US Classification:

363 20

Abstract:

A transformer-coupled two-inductor buck converter is provided which comprises a series input circuit including an input inductor, a capacitor and a grounded inductor. The input and grounded inductors are wound so that a source of d. c. input voltage can be connected across positive polarity outer ends thereof. A transformer is provided for coupled the input and output circuits of the converter. When a switching transistor in the input circuit turns on, input current conducting through the input inductor joins with current being dragged out of the grounded inductor and through the capacitor to conduct through the primary winding of the transformer and couple to the secondary winding for delivery as output current to the load. An output winding coupled to the grounded inductor is connected by a switching diode to the load. When the switching transistor turns off, stored current energy in the input inductor conducts through the capacitor into the grounded inductor and joins with stored current energy in the grounded inductor in commutating to the output winding and conducting through the switching diode for delivery as output current to the load.

US Patent:

41998057, Apr 22, 1980

Filed:

Nov 21, 1977

Appl. No.:

5/853169

Inventors:

Robert M. Martinelli - Torrance CA
Allan F. Ahrens - Saugus CA

Assignee:

Hughes Aircraft Company - Culver City CA

International Classification:

H02M 700

US Classification:

363 60

Abstract:

A multiphase capacitor diode voltage multiplier for high power applications. A multiphase circuit comprising N strings of diode-capacitor arrays in M multiplier stages receives N alternating voltage inputs, each varying in phase, from a power stage. The multiphase multiplier circuit configuration enables current sharing among the N strings to reduce component stress.