Fernando Salomon Rodriguez

US Patent:

20220294228, Sep 15, 2022

Filed:

Mar 9, 2022

Appl. No.:

17/690624

Inventors:

- Petaluma CA, US
Fernando Rodriguez - Austin TX, US
Patrick Lyle Chapman - Austin TX, US

International Classification:

H02J 3/38
H02M 7/48

Abstract:

A partial-resonant converter is provided herein and comprises a partial resonant link formed by a magnetizing link inductor connected in parallel with a first capacitor on a primary winding side of a transformer and a second capacitor on a secondary winding side of the transformer, a pair of series connected switches coupled across the magnetizing link inductor and the first capacitor, and a plurality of forward conducting bidirectional blocking switches that connect an input source and an output load to the magnetizing link inductor during operation.

US Patent:

20180323726, Nov 8, 2018

Filed:

Apr 18, 2018

Appl. No.:

15/956011

Inventors:

- San Jose CA, US
Fernando Rodriguez - Austin TX, US

Assignee:

SunPower Corporation - San Jose CA

International Classification:

H02M 7/537
G01R 19/25
G01R 21/133
G01R 35/04
H02J 3/38

Abstract:

A first micro-inverter and a second micro-inverter are arranged to source a load. The micro-inverters include a virtual oscillator control (VOC) to provide voltage commands to an hysteretic current regulator. The hysteretic current regulator provides instructions to the DC/AC inverter to output voltage to the load. When the second micro-inverter is powered on, an initialization process is executed to provide values to its VOC that reduces transients and improves the synchronization process with the first micro-inverter.

US Patent:

20180226899, Aug 9, 2018

Filed:

Apr 9, 2018

Appl. No.:

15/948380

Inventors:

- San Jose CA, US
Jonathan List Ehlmann - Austin TX, US
Fernando Rodriguez - Austin TX, US

Assignee:

SunPower Corporation - San Jose CA

International Classification:

H02M 7/48
H02M 5/458
H02M 7/5387
H02M 1/15

Abstract:

Systems, methods, and articles of manufacture are provided wherein inverter topologies and inverter control employ primary and secondary windings with a half-bridge circuit and an unfolding bridge circuit positioned between the second winding and an AC grid. Certain topologies may employ control circuits for controlling the bridges suitable for a phase angle of the AC grid.

US Patent:

20180109224, Apr 19, 2018

Filed:

Oct 14, 2016

Appl. No.:

15/294098

Inventors:

- San Jose CA, US
Fernando Rodriguez - Austin TX, US
Philip Rothblum - Austin TX, US
Anant K. Singh - Richardson TX, US

Assignee:

SunPower Corporation - San Jose CA

International Classification:

H02S 50/00

Abstract:

Electrical component location is provided. Employed location techniques may include providing a cycling signal, having components to be located sense the cycling signal at the same time, report back the sensed signal, and determining relative locations for one or more of the components using the sensed signals reported by the components.

US Patent:

20180006575, Jan 4, 2018

Filed:

Jun 30, 2016

Appl. No.:

15/199239

Inventors:

- San Jose CA, US
Jonathan List Ehlmann - Austin TX, US
Fernando Rodriguez - Austin TX, US

Assignee:

SunPower Corporation - San Jose CA

International Classification:

H02M 7/48
H02M 1/15
H02M 5/458
H02M 7/5387

Abstract:

Systems, methods, and articles of manufacture are provided wherein inverter topologies and inverter control employ primary and secondary windings with a half-bridge circuit and an unfolding bridge circuit positioned between the second winding and an AC grid. Certain topologies may employ control circuits for controlling the bridges suitable for a phase angle of the AC grid.

US Patent:

20170279375, Sep 28, 2017

Filed:

Mar 25, 2016

Appl. No.:

15/080948

Inventors:

- San Jose CA, US
Fernando Rodriguez - Austin TX, US

International Classification:

H02M 7/5387
H02J 3/38

Abstract:

A method, system, and computer-readable medium facilitate a soft switching technique for operating an inverter. In a full bridge inverter, a one of first set of transistors in the inverter may be rapidly activated and deactivated in pulses while one of a second set of transistor may be activated during a switching time period where the inverter matches the voltage and frequency of an AC grid. During a blanking time period between switching time periods, one of the second set of transistors may be primed before the other is activated during the next switching time period to prevent generating noise in the AC output of the inverter due to a hard switch.

US Patent:

20160285390, Sep 29, 2016

Filed:

Mar 24, 2016

Appl. No.:

15/080142

Inventors:

- San Jose CA, US
Fernando Rodriguez - Austin TX, US

International Classification:

H02M 7/797
H02M 5/16

Abstract:

An inverter includes a three-winding transformer, a DC-AC inverter electrically coupled to the first winding of the transformer, a cycloconverter electrically coupled to the second winding of the transformer, and an active filter electrically coupled to the third winding of the transformer. The DC-AC inverter is adapted to convert the input DC waveform to an AC waveform delivered to the transformer at the first winding. The cycloconverter is adapted to convert an AC waveform received at the second winding of the transformer to the output AC waveform having a grid frequency of the AC grid. The active filter is adapted to sink and source power with one or more energy storage devices based on a mismatch in power between the DC source and the AC grid. At least two of the DC-AC inverter, the cycloconverter, or the active filter are electrically coupled via a common reference electrical interconnect.