Multirotor Wind Turbine Platform Positioning

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Solution Overview

Problem

Multirotor wind turbines face challenges in providing safe and accessible platforms for spare parts and personnel due to the displacement of the energy generating units' center of gravity, making traditional landing and hoisting platforms unsuitable, and increasing the risk of collisions and hazardous malfunctions.

Innovation Solution

A multirotor wind turbine design featuring a platform remote from the energy generating units, forming an upwards-facing working surface that allows for safe landing and hoisting, with a load carrying structure and yaw arrangement that positions the platform at a higher altitude and offset from the rotor planes, enhancing safety and accessibility while being structurally integrated into the tower for increased strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the platform is positioned on the energy generating unit roof, then easy access for hoisting and landing is achieved, but the center of gravity displacement makes the roof unsuitable and increases collision risk

Engineering Contradiction:

Improveaccess for hoisting and landingVSAvoidsafety against collision and malfunction

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The platform is extracted from the energy generating unit roof and repositioned to a remote location on the tower structure. This separation removes the conflicting requirements: the platform maintains its function for hoisting and landing while being positioned away from the rotor planes to eliminate collision risks and远离 from potential malfunction zones.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The tower structure serves as an intermediary element between the energy generating units and the platform. By positioning the platform on the tower rather than directly on the energy generating units, the design mediates between the need for platform access and the need to avoid collision hazards, creating a safe working distance while maintaining structural connectivity.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the platform is positioned remote from energy generating units, then collision risk is reduced, but structural integration complexity increases

Engineering Contradiction:

Improvesafety against collisionVSAvoidstructural integration

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The platform structure is segmented into modular components that can be independently attached to the tower at different locations. This segmentation allows the platform to be positioned remotely from the energy generating units for safety while using standardized, pre-fabricated modules that simplify structural integration rather than requiring complex custom designs.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP3807519B1A multirotor wind turbine

Publication Date: 2023.04.19 VESTAS WIND SYSTEMS AS

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AI summary

A multirotor wind turbine (1) with a tower (2) and at least two energy generating units, the units held by a load carrying structure (9, 10) extending transverse to the vertical direction of the tower. To enable improved access to the wind turbine, a platform (12) forming an upwards facing plane working surface (17) is provided.