Hui Li

US Patent:

7830687, Nov 9, 2010

Filed:

Jul 13, 2007

Appl. No.:

11/777641

Inventors:

Zhong Du - Tallahassee FL, US
Hui Li - Tallahassee FL, US

Assignee:

Florida State University Research Foundation, Inc. - Tallahassee FL

International Classification:

H02M 7/49
H02M 1/10
H02J 3/28

US Classification:

363 71, 363 43, 363 98, 363142, 307 45

Abstract:

An adaptive hybrid energy system is provided. The system includes a first DC energy source that generates a first DC output by converting a first type of energy into an electrical output. Additionally, the system includes at least a second DC energy source that generates a second DC electrical output by converting a second type of energy into an electrical output. The system further includes a cascaded multilevel converter electrically connected to the first and second DC energy sources to convert a DC electrical output into a sinusoidal electrical output when at least one of the first and second DC energy sources is operable.

US Patent:

8063602, Nov 22, 2011

Filed:

Sep 2, 2008

Appl. No.:

12/202574

Inventors:

Da Zhang - Manchester CT, US
Hui Li - Tallahassee FL, US
Emmanuel G. Collins - Tallahassee FL, US

Assignee:

Florida State University Research Foundation, Inc. - Tallahassee FL

International Classification:

G05B 11/42

US Classification:

318610, 700 41

Abstract:

Different circuit-based implementations of stochastic anti-windup PI controllers are provided for a motor drive controller system. The designs can be implemented in a Field Programmable Gate Arrays (FPGA) device. The anti-windup PI controllers are implemented stochastically so as to enhance the computational capability of FPGA.

US Patent:

20140063874, Mar 6, 2014

Filed:

Sep 5, 2013

Appl. No.:

14/018988

Inventors:

Hui Li - Tallahassee FL, US

Assignee:

The Florida State University Research Foundation, Inc - Tallahassee FL

International Classification:

H02M 1/14

US Classification:

363 40

Abstract:

A direct double-frequency ripple current control in a two-stage high-frequency-link (HFL) based fuel cell converter that can achieve low-frequency ripple free input current without using large electrolytic capacitors is provided. To eliminate the double-frequency ripple current disturbance introduced by the single-phase inverter load, a proportional-resonant (PR) controller is developed to achieve an extra high control gain at designed resonant frequency. This high gain can be viewed as the virtual high impedance for blocking the double-frequency ripple energy propagation from inverter load to fuel cell stack. More particularly, the proposed control system can realize the utilization of all capacitive ripple energy sources in the system by regulating all the capacitors to have large voltage swing and the voltage swing is synchronized to keep real-time balancing of the transformer primary-side and secondary-side voltages. As a result, the zero-voltage-switching (ZVS) operation for all switching devices in the dc-dc stage can be guaranteed.

US Patent:

20210408892, Dec 30, 2021

Filed:

Sep 13, 2021

Appl. No.:

17/473328

Inventors:

- Tallahassee FL, US
Hui Li - Tallahassee FL, US

International Classification:

H02M 1/08
H02M 1/32
H03K 17/691

Abstract:

The disclosure relates to a devices, systems and methods implementing a single transformer-based gate driver. In one embodiment, single transformer-based gate driver includes an RF source; a PWM controller; an edge detector and pulse generating circuit operably connected to the RF source and PWM controller; a transformer comprising a primary side and a secondary side, the primary side of the transformer operably connected to an output of the edge detector and pulse generating circuit, the secondary side of the transformer operably connected to a rectifier circuit and a signal recovery circuit; and a drive circuit operably connected to the rectifier circuit and the signal recovery circuit.

US Patent:

20210226525, Jul 22, 2021

Filed:

Jan 21, 2021

Appl. No.:

17/154673

Inventors:

- Tallahassee FL, US
Hui Li - Tallahassee FL, US

International Classification:

H02M 1/08
H03K 17/691
H02M 1/32

Abstract:

The disclosure relates to a devices, systems and methods implementing a single transformer-based gate driver. In one embodiment, single transformer-based gate driver includes an RF source; a PWM controller; an edge detector and pulse generating circuit operably connected to the RF source and PWM controller; a transformer comprising a primary side and a secondary side, the primary side of the transformer operably connected to an output of the edge detector and pulse generating circuit, the secondary side of the transformer operably connected to a rectifier circuit and a signal recovery circuit; and a drive circuit operably connected to the rectifier circuit and the signal recovery circuit.

Address:

1538 N Ave 47, Los Angeles, CA 90042

Phone:

(323)9820358

VIN:

5TDKK3DC1BS117756

Make:

TOYOTA

Model:

SIENNA

Year:

2011