Marc S Elpel

US Patent:

20120212064, Aug 23, 2012

Filed:

Oct 20, 2011

Appl. No.:

13/277977

Inventors:

Sorin Andrei Spanoche - Santa Clara CA, US
Kent Kernahan - Cupertino CA, US
Ion Opris - San Jose CA, US
Paul Scrobohaci - Menlo Park CA, US
Peter Curzon - Concord CA, US
Richard Moeller - Sunnyvale CA, US
Shiloh Hawley - Sunnyvale CA, US
Aldrin Aviananda - San Jose CA, US
David Stewart - Sunnyvale CA, US
Felipe Fuks - Sunnyvale CA, US
Marc Elpel - Sunnyvale CA, US

Assignee:

Array Converter Inc. - Sunnyvale CA

International Classification:

H02J 1/00
H02M 7/537

US Classification:

307 82, 363131

Abstract:

Methods, apparatus and systems for controlling a photovoltaic panel, to output three-phase power while ensuring the power source operates safely include determining a temperature of the photovoltaic panel, determining a voltage provided from the photovoltaic panel, determining a parameter based on the voltage and the temperature and controlling a DC to three-phase power converter based on the determined parameter. The three-phase power converter may be a pulse amplitude modulated current converter (PAMCC), configured to output first, second and third pulse amplitude modulated current pulse from three terminals controlled in timing and phase so that when respective outputs of multiple PAMCCs are connected, each phase of the plurality of PAMCCs is demodulated to produce a three-phase alternating current output. The PAMCC may be controlled through tables of pulse durations based on the determined parameter. The voltage output may be controlled through a fast control loop and through a slower control loop.

US Patent:

20130113293, May 9, 2013

Filed:

Nov 2, 2012

Appl. No.:

13/667817

Inventors:

Array Power Inc. - Sunnyvale CA, US
Marc ELPEL - Sunnyvale CA, US

Assignee:

Array Power Inc. - Sunnyvale CA

International Classification:

H02M 7/537

US Classification:

307 82, 363131

Abstract:

The systems, methods, and devices of the various embodiments provide a power converter that modulates the voltage to follow the envelope of the phase output such that the current may pass through to the line. The systems, methods, and devices of the various embodiments may provide a two phase power converter that modulates the voltage to follow the envelope of the two phase output. The systems, methods, and devices of the various embodiments may provide a three phase power converter that modulates the intermediate voltage to follow the envelope of the three phase output such that the current may pass through to the line without requiring intermediate storage.

US Patent:

20020060153, May 23, 2002

Filed:

Aug 23, 2001

Appl. No.:

09/938271

Inventors:

Marc Elpel - Belmont CA, US

Assignee:

DNA Sciences, Inc.

International Classification:

G01N027/26
G01N027/447

US Classification:

204/451000, 204/601000

Abstract:

A microcapillary channel having two opposite sides, wherein the opposite sides have different lengths over a straight portion of the channel. A microchannel system for compensating for skewing of sample plugs as the sample plugs pass around a curved microchannel, comprising: a first microchannel having two opposite sides, wherein the opposite sides have different lengths over a straight portion of the first channel; a second microchannel having two opposite sides, wherein the opposite sides have different lengths over a straight portion of the second channel; and a curved portion of microchannel disposed between, and in fluid communication with, the first and second microchannels, wherein the second sides of the first and second microchannels are disposed towards the interior of the curvature of the curved portion.