Fernando B Rodriguez

US Patent:

20200062550, Feb 27, 2020

Filed:

Nov 5, 2019

Appl. No.:

16/674214

Inventors:

- Farmington CT, US
Fernando Rodriguez - Manchester CT, US

International Classification:

B66B 11/04
B66B 1/30
B66B 9/02
B66B 19/00

Abstract:

A linear propulsion system and method of assembling and testing the same is disclosed. The linear propulsion system may comprise a track, a vehicle, a mover mounted to the vehicle, and a dual inverter system. The track may comprise a first plurality of stator sections interleaved with a second plurality of stator sections. The dual inverter system may include first and second multi-phase inverters that share input hardware.

US Patent:

20170362062, Dec 21, 2017

Filed:

Dec 22, 2015

Appl. No.:

15/537499

Inventors:

- Farmington CT, US
Fernando Rodriguez - Manchester CT, US

International Classification:

B66B 11/04
B66B 5/00
H02K 41/03
B66B 9/00

Abstract:

According to an aspect, an elevator system includes an elevator car to travel in a hoistway and a linear propulsion system to impart force to the elevator car. The linear propulsion system includes a secondary portion mounted to the elevator car and a primary portion mounted in the hoistway. The primary portion includes a plurality of motor segments The elevator system also includes a load sensor operable to detect an elevator load on a brake. The elevator system further includes a control system operable to apply an electrical current to at least one of the motor segments that overlaps the secondary portion, determine a measurement of the elevator load, and vary an electrical angle estimate while the brake is engaged and thrust is applied.

US Patent:

20170238508, Aug 24, 2017

Filed:

Feb 19, 2017

Appl. No.:

15/436837

Inventors:

Fernando Rodriguez - Allen TX, US

International Classification:

A01K 27/00
A44B 18/00
A01K 13/00
A44B 17/00

Abstract:

A collar is provided for securing a pet's apparel. The collar includes fasteners on the underside that are used to connect to fasteners located on the pet's apparel.

US Patent:

20160311656, Oct 27, 2016

Filed:

Dec 5, 2013

Appl. No.:

15/100766

Inventors:

- Farmington CT, US
Fernando Rodriguez - Manchester CT, US

International Classification:

B66B 11/04
B66B 19/00
B66B 1/30

Abstract:

A linear propulsion system () and method of assembling and testing the same is disclosed. The linear propulsion system () may comprise a track (), a vehicle (), a mover () mounted to the vehicle (), and a dual inverter system (). The track () may comprise a first plurality () of stator sections () interleaved with a second plurality () of stator sections (). The dual inverter system () may include first and second multi-phase inverters () that share input hardware ().

US Patent:

20160137459, May 19, 2016

Filed:

Jun 27, 2013

Appl. No.:

14/897106

Inventors:

- Farmington CT, US
Fernando Rodriguez - Manchester CT, US

International Classification:

B66B 11/04
H02K 41/03

Abstract:

An elevator system includes a hoistway; an elevator car to travel in the hoistway; permanent magnets mounted to the elevator car; and primary windings mounted in the hoistway, the primary windings having a first section having a first number of turns and a second section having a second number of turns, wherein the first number of turns is less than the second number of turns.

US Patent:

20140375334, Dec 25, 2014

Filed:

Jun 21, 2013

Appl. No.:

13/923708

Inventors:

- Charlotte NC, US
Fernando Rodriguez - Manchester CT, US

International Classification:

G01R 27/26

US Classification:

324602, 324654

Abstract:

Embodiments relate to systems and methods for selecting circuit element values for a hybrid active power filter operating over a variable frequency. In aspects, a hybrid active power filter (HAPF) circuit can eliminate current harmonics present in an AC power source which are caused by an AC load network.—In implementations, the AC voltage source—may be a source having a variable frequency range, for instance 360-800 Hz. Since the source voltage can encompass a significant frequency range, a simple determination of the correct or desirable values of capacitive and inductive elements in the filtering section of the HAPF may not be possible. According to aspects, analytic techniques are provided which allow the values of those circuit elements to be derived from impedance and other circuit values to provide satisfactory suppression of identified harmonics, which can include the 5, 7, 11, 13, 17, 19, 23, 25harmonics in the output voltage.

US Patent:

20140376284, Dec 25, 2014

Filed:

Jun 21, 2013

Appl. No.:

13/923807

Inventors:

- Charlotte NC, US
Fernando Rodriguez - Manchester CT, US

International Classification:

H02J 3/24

US Classification:

363 39

Abstract:

Embodiments relate to systems and methods for tuning the control of a shunt active power filter over a variable frequency. In aspects, a shunt active power filter is provided to filter current harmonics from the output delivered to a dc load via a recitifier. The shunt active power filter control can be configured as a set of resonant regulators connected in a parallel configuration. Each of the resonant regulators can be tuned to dampen or eliminate a particular harmonic, such as the 5th, 7, 11, 13, 17or 19harmonics. The shunt active power filter can be configured to target those or other harmonics over a range of source voltage frequencies, such as 360-800 Hz. The harmonics can be tuned over that or other source frequency ranges by determining the root locus poles of the filter as a function of feedback loop gain.