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1. EP3989382 - WIND TURBINE AUXILIARY POWER SYSTEM

Office
European Patent Office
Application Number 20382928
Application Date 26.10.2020
Publication Number 3989382
Publication Date 27.04.2022
Publication Kind A1
IPC
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
F03D 9/25
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
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
20Wind motors characterised by the driven apparatus
25the apparatus being an electrical generator
CPC
H02J 3/381
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
F03D 9/255
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
9Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
20Wind motors characterised by the driven apparatus
25the apparatus being an electrical generator
255connected to an electrical general supply grid; Arrangements therefor
F05B 2260/76
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
2260Function
70Adjusting of angle of incidence or attack of rotating blades
76the adjusting mechanism using auxiliary power sources
Applicants SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY SL
Designated States
Priority Data 20382928 26.10.2020 EP
Title
(DE) WINDTURBINENHILFSSTROMSYSTEM
(EN) WIND TURBINE AUXILIARY POWER SYSTEM
(FR) SYSTÈME D'ALIMENTATION AUXILIAIRE D'ÉOLIENNE
Abstract
(EN) A wind turbine auxiliary power system is provided and is configured to receive electrical power from an electrical power generating system (110) of the wind turbine or from a power grid (200). The auxiliary power system (10) comprises an auxiliary transformer (20) having a primary side configured to be coupled to the electrical power generating system (110) of the wind turbine (100) and a secondary side configured to be coupled to auxiliary power consumers (60) of the wind turbine (100) and to provide transformed electrical power to the auxiliary power consumers (60). It further includes an electronic on-load tap changer (30) provided on the auxiliary transformer (20), wherein the electronic on-load tap changer (30) comprises taps (31) on at least one transformer winding (21, 22) of the auxiliary transformer (20) and semiconductor switches (32, 35, 36) that are coupled to the taps (31) and that are configured such that by controlling the semiconductor switches (32, 35, 36), the transformation ratio of the auxiliary transformer (20) is adjustable to compensate for voltage variations on the primary side of the auxiliary transformer (20).
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