Wind energy plant with dynamic power distribution between the pitch system and supplementary electrical load

US8922040B2 · kind B2 · utility

Assignee

• SENVION SE · DE

Inventors

• Matthias Peters · Halstenbek, DE
• Martin Von Mutius · Ascheffel, DE

Key dates

• Filing date: Jan 21, 2011
• Grant date: Dec 30, 2014
• Expiry date: Apr 19, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A wind energy plant comprising a rotor having blades and a generator driven by said rotor for generating electric energy. The pitch of the blades can be adjusted and a pitch system for adjusting the pitch angle of the blades is provided, which is supplied by a hub power source. An additional electric load is provided on the hub. A pitch power control device is provided which dynamically distributes the power of the hub power source between the pitch system and the additional electric load and further acts on the pitch system such that its power consumption during high-load operation is reduced. Thus, the power consumption of the pitch system during high-load operation can be reduced and additional power provided for operating the additional load. Even large additional loads, such as a blade heater, can be operated in this way, without having to boost the hub power source.