University of Minnesota
University of Minnesota
http://www.umn.edu/
612-625-5000

Ned Mohan

Personal

Research

Education

 

Patents

Number

Patent #

Title

Co-Inventors

Issue date

1

Application number: 12/834,437
Publication number: US 2011/0007534 A1

SOFT SWITCHING POWER ELECTRONIC TRANSFORMER

Ranjan Kumar Gupta, Krushna Keshab Mohapatra, Ned Mohan, Gysler Castelino, Kaushik Basu, Nathan Weise

PENDING
Jul 12, 2010 (filing date)

2

8,169,179

OPEN-ENDED CONTROL CIRCUIT FOR ELECTRICAL APPARATUS

 

Ned Mohan Krushna Mohapatra

May 1, 2012

3

7,869,236

CARRIER-BASED PULSE-WIDTH MODULATION (PWM) CONTROL FOR MATRIX CONVERTERS

Ned Mohan, Krushna K. Mohapatra, Satish Thuta, Gaurav K. Aggarwal, St. Philip Jose, Moshi

January 11, 2011

4

6,611,444

ZERO VOLTAGE SWITCHING DC-DC CONVERTER

Rajapandian Ayyanar, Ned Mohan

Aug 26, 2003

5

6,310,785

ZERO VOLTAGE SWITCHING DC-DC CONVERTER

Rajapandian Ayyanar, Ned Mohan

Oct. 30,2001

6

5,892,352

SYNCHRONIZATION OF THE SWITCHING ACTION OF HYSTERESIS CURRENT CONTROLLED PARALLEL CONNECTED POWER ELECTRONICS SYSTEMS

Johann W. Kolar, Wien, Austria; Ned Mohan, St. Paul; Girish R. Kamath

Apr. 6, 1999

7

5818126

Power transfer controller

 

Ned Mohan

Oct 6, 1998

8

5,656,924

SYSTEM AND METHOD FOR PROVIDING HARMONIC CURRENTS TO A HARMONIC GENERATING LOAD CONNECTED TO A POWER SYSTEM

Ned Mohan, Girish Kamath, Vernon D. Albertson

Aug 12, 1997

9

5,548,165

Hybrid filter for reducing distortion in a power system

 

Ned Mohan Mukul Rastogi

Aug. 20,1996

10

5,499,178

System for reducing harmonics by harmonic current injection

Ned Mohan

Mar 12, 1996

11

5345375

System and method for reducing harmonic currents by current injection

Ned Mohan

Sep 6, 1994

12

5343079

Standby power supply with load-current harmonics neutralize

 

Ned Mohan, Maximilian R. Peterson, Conor A. Quinn

Aug 30, 1994

13

4855888

Constant frequency resonant power converter with zero voltage switching

 

Christopher P. Henze, Ned Mohan, John G. Hayes

Aug 8, 1989

14

4242628

Wind energy conversion system

 

Narendra Mohan Mahmoud Riaz

Dec 30, 1980

15

4224660

Composite filter for suppressing harmonic frequencies on electric power

Narendra Mohan

Sep 23, 1980

16

4079305

Power supply for high power loads

 

Harold Peterson Narendra Mohan

Mar 14, 1978

17

4053820

Active Filter

Harold Peterson Narendra Mohan

Oct 11, 1977

 

Notes:

  1. Patent Application 2011/0007534 is still pending and it is based on the research of our group on the topic of power-electronics based transformers.
  2. Patent Application 2008/0049460 is recently allowed; the patent number is yet to be issued. It is the basis of our group’s research on the topic of matrix-converters based motors/generators and power-electronic transformers.
  3. Patents 4053820, 4224660, 5,548,165, 5,548,165, 5,548,165 and 5,656,924 are on the topic of active filtering. This research led to active filters by Square D and ABB.
  4. Patents 5,499,178 and 5,548,165 were the basis of the “Minnesota Rectifier” on which the chargers for GM’s EV1-fleet and S-10 pickups were based.