2022-12-08
http://w3.windfair.net/wind-energy/pr/42342-flender-test-system-wind-turbine-gearbox-drivetrain-production-site-eol-performance-r-d-test-systems

News Release from Flender International GmbH

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Wind Industry Profile of


Flender has commissioned two large test systems for wind turbine gearboxes and drivetrains

R&D Test Systems has delivered two new turnkey End-Of-Line test systems, designed to test wind turbine drivetrains at two of Flender’s production sites.

Image: FlenderImage: Flender

Flender, one of the leading suppliers of gear solutions and electrical drive systems for wind turbines, has integrated a new production line in two of their factories at which they are manufacturing and assembling complete drivetrains for their customers.

The new production line requires new testing capabilities to be able to validate the quality and performance of the products. More specifically, Flender wanted a test system that can perform End-Of-Line (EOL) testing of all drivetrains prior to shipment. The new gearboxes are produced at two of Flender’s factories: Voerde in Germany and Tianjin in China. Hence, Flender needed two of the same EOL test benches.

“End-Of-Line testing, which is the final check before a product leaves a factory, is a crucial step in a production process. At R&D Test Systems, we develop specialized test systems in line with our customer's requirements. We have a lot of experience and in-house competencies, which means that we, in this case, were an ideal partner for Flender,” says Lars Brunsgaard Poulsen, Project Director at R&D Test Systems.

Back-to-back principle

The purpose of the test system is to test turbine drivetrains. The new EOL test benches are based on the electrical back-to-back principle, which means that Flender can set up two full drive trains opposite each other and test them simultaneously. With this setup, it is possible on each factory to fully test 4 drivetrains in approx. 26 hours, as each test circle takes around 8 hours and the exchange of two drivetrains takes around 5 hours. The exchange time also covers removal of electrical power cables, oil lubrication hoses, cooling hoses, cables for DAQ and control system as well as all mechanical connections.

The back-to-back principle is well known in the industry for gearboxes but has in this project with a strong alignment of Flender and R&D Test Systems been applied to drivetrains as well to ensure high production output and regeneration of the consumed power. When the consumed energy is regenerated, only the losses are to be fed into the system, making operation of the test benches more sustainable. Furthermore, these systems can test complete medium-speed drivetrains, consisting of the main bearing unit with main shaft, gearbox, and generators. Another aspect of the new test benches is that costumer data acquisition and all instrumentation on the drivetrain is included in the test setup, thus all sensors and actuators are fully tested. This secures a high level of quality insurance before the drivetrain leaves the factory for onsite installation.

Source:
Flender
Author:
Press Office
Link:
www.rd-as.com/...
Keywords:
Flender, test system, wind turbine, gearbox, drivetrain, production site, EOL, performance, R&D Test Systems



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