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1. US20180205335 - Switching strategy for increased efficiency of power converters

Office
United States of America
Application Number 15405712
Application Date 13.01.2017
Publication Number 20180205335
Publication Date 19.07.2018
Grant Number 10205399
Grant Date 12.02.2019
Publication Kind B2
IPC
H02M 5/458
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
5Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
40with intermediate conversion into dc
42by static converters
44using discharge tubes or semiconductor devices to convert the intermediate dc into ac
453using devices of a triode or transistor type requiring continuous application of a control signal
458using semiconductor devices only
H02K 11/33
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
11Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
30Structural association with control circuits or drive circuits
33Drive circuits, e.g. power electronics
H02J 3/38
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallelly feeding a single network by two or more generators, converters, or transformers
H02M 3/335
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
3Conversion of dc power input into dc power output
22with intermediate conversion into ac
24by static converters
28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
325using devices of a triode or a transistor type requiring continuous application of a control signal
335using semiconductor devices only
H02M 7/797
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
66with possibility of reversal
68by static converters
72using discharge tubes with control electrode or semiconductor devices with control electrode
79using devices of a triode or transistor type requiring continuous application of a control signal
797using semiconductor devices only
H02P 9/00
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
9Arrangements for controlling electric generators for the purpose of obtaining a desired output
CPC
F03D 7/0272
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
02the wind motors having rotation axis substantially parallel to the air flow entering the rotor
0272by measures acting on the electrical generator
F03D 7/042
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
DWIND MOTORS
7Controlling wind motors
02the wind motors having rotation axis substantially parallel to the air flow entering the rotor
04Automatic control; Regulation
042by means of an electrical or electronic controller
H02J 3/386
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
381Dispersed generators
382the generators exploiting renewable energy
386Wind energy
H02K 11/33
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
11Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
30Structural association with control circuits or drive circuits
33Drive circuits, e.g. power electronics
H02K 7/183
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
18Structural association of electric generators with mechanical driving motors, e.g. with turbines
1807Rotary generators
1823structurally associated with turbines or similar engines
183wherein the turbine is a wind turbine
H02M 2001/0032
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
1Details of apparatus for conversion
0003Details of control, feedback and regulation circuits
0032Control circuits allowing low power mode operation, e.g. "standby"
Applicants General Electric Company
Inventors Dong Dong
Robert Gregory Wagoner
Govardhan Ganireddy
Ravisekhar Nadimpalli Raju
Agents GE Global Patent Operation
Nitin Joshi
Title
(EN) Switching strategy for increased efficiency of power converters
Abstract
(EN)

Systems and methods for operating a power converter are provided. A DC to AC converter can include an inner converter and an outer converter. The inner converter can include an isolation transformer a first plurality of switching devices. The outer converter can include a second plurality of switching devices. A control method can include determining an output voltage of the outer converter. The control method can further include controlling operation of the inner converter based at least in part on the output voltage of the outer converter.