Inventor
FOLTS DOUGLAS C
US25 patents
⚠️ This page may combine multiple inventors who share the name “FOLTS DOUGLAS C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMERICAN SUPERCONDUCTOR CORP
16 patentsUS6987331B2Jan 17, 2006
Voltage recovery device for use with a utility power network
AMERICAN SUPERCONDUCTOR CORP83 citations95
US7989983B2Aug 2, 2011
Power conversion systems
AMERICAN SUPERCONDUCTOR CORP19 citations92
US7091703B2Aug 15, 2006
Dynamic reactive compensation system and method
AMERICAN SUPERCONDUCTOR CORP81 citations92
US6900619B2May 31, 2005
Reactive power compensation to minimize step voltage changes and transients
AMERICAN SUPERCONDUCTOR CORP23 citations91
US6906434B1Jun 14, 2005
Electric utility system with superconducting magnetic energy storage
AMERICAN SUPERCONDUCTOR CORP43 citations90
US6577108B2Jun 10, 2003
Voltage regulation of a utility power network
AMERICAN SUPERCONDUCTOR CORP41 citations90
US7567160B2Jul 28, 2009
Supplementary transformer cooling in a reactive power compensation system
AMERICAN SUPERCONDUCTOR CORP19 citations88
US7674751B2Mar 9, 2010
Fabrication of sealed high temperature superconductor wires
AMERICAN SUPERCONDUCTOR CORP12 citations84
US7902461B2Mar 8, 2011
Fault current limiting HTS cable and method of configuring same
AMERICAN SUPERCONDUCTOR CORP8 citations83
US7724482B2May 25, 2010
Parallel HTS transformer device
AMERICAN SUPERCONDUCTOR CORP13 citations83
USRE41170EMar 30, 2010
Voltage regulation of a utility power network
AMERICAN SUPERCONDUCTOR CORP10 citations82
US7265521B2Sep 4, 2007
Reactive power compensation to minimize step voltage changes and transients
AMERICAN SUPERCONDUCTOR CORP13 citations82
US6445555B1Sep 3, 2002
Method and apparatus for discharging a superconducting magnet
AMERICAN SUPERCONDUCTOR CORP11 citations72
US6414853B2Jul 2, 2002
Method and apparatus for controlling a phase angle of AC power to keep DC voltage from an energy source constant
AMERICAN SUPERCONDUCTOR CORP10 citations72
US10193340B2Jan 29, 2019
Multi-level cascaded H-bridge STATCOM circulating cooling fluid within enclosure
AMERICAN SUPERCONDUCTOR CORP4 citations67
US10669001B2Jun 2, 2020
Hybrid electrical and mechanical propulsion and energy system for a ship
AMERICAN SUPERCONDUCTOR CORP2 citations65
FOLTS DOUGLAS C
5 patentsUS8120932B2Feb 21, 2012
Low voltage ride through
FOLTS DOUGLAS C26 citations90
US8189324B2May 29, 2012
Power electronic assembly with slotted heatsink
FOLTS DOUGLAS C11 citations83
US8886267B2Nov 11, 2014
Fault current limiting HTS cable and method of configuring same
FOLTS DOUGLAS C4 citations72
US8532725B2Sep 10, 2013
Parallel connected HTS utility device and method of using same
FOLTS DOUGLAS C2 citations61
US9172312B2Oct 27, 2015
Reducing photovoltaic array voltage during inverter re-enablement
FOLTS DOUGLAS C2 citations53