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Great at Control

Pitch ControlExperience a new level of precision, safety and reliability with the well-proven Mita-Teknik MDS Pitch Control

Mita-Teknik - A Proven Partner

Precise, safe and reliable performance is essential to ensure a profitable wind turbine operation. With more than 48,000 control systems and more than 3,000 MDS Pitch systems in operation worldwide, Mita-Teknik is your proven technology partner. The advanced MDS Pitch Control system is an integrated part of the wind turbine’s safety system, and effectively minimize O&M costs, reduce downtime and improve productivity. The system is a result of years of continuous development and dedicated focus from Mita-Teknik’s R&D team.

A New Standard

We customize the MDS Pitch Control system to meet your specific requirements. The system fits all wind turbine designs up to 10 MW, and with predetermined parameter sets and an optimized sensor calibration approach, we guarantee smooth installation and commissioning with limited downtime and higher availability.

Customers benefit from a long list of design options, such as; collective (CPC) or individual (IPC) pitch, integration with Mita Control or 3rd party control system, VRLA battery or ultracapacitor energy storage, various drive and motor sizes and Pitch Performance optimization services. Whatever your choice, Mita-Teknik is with you all the way.

Pitch ControlExperience a new level of precision, safety and reliability with the well-proven Mita-Teknik MDS Pitch Control system.

Key Benefits: › Proven Pitch Control - cost competitive, well-proven and certified system.

› Customized Turnkey Solution – made to fit your wind turbine model.

› Durability - designed for cold climate and high altitude.

› Excellent Engineering - thorough test procedures and top-shelf components.

› Individual Pitch Control – optional solution to reduce turbine loads.

› Integration Options - open for integration with any turbine control system.

› Communication - communication support library for 3rd party wind turbine control systems on request.

› High availability – designed for fast commissioning and easy maintenance procedures.

› Certification – functional safety according to ISO13849-1.

› Compliance – GB/T 25386, NB/T 31018, GL2010/ GL2012.

MDS Pitch Control

Complete Solution

Scope of Supply › 3 x MDS cabinets (or compartment) with MDS pitch drive and required surrounding components.› 3 x MDS cabinet (or compartment) with energy storage.› 3 x MDS pitch servo motor with integrated electrical brake.› 3 x MDS sensor kit (with or without mounting brackets).› 3 x MDS cable set for sensors (customized length).› 1 x MDS cable set for interconnecting the MDS boxes (customized length).› 1 x MDS cable set for slip ring (customized length and connector).

Design

Compact Cabinets › Small cabinets to take up less space in the hub. › Bolt on frame to fit mounting in the hub. › Service friendly with access to all components inside. › All cables are connected with plugs.› OPTION: Energy storage cabinet integrated with the control cabinet.

Top-shelf Components › Thoroughly tested and certified components.› Resistant to dust and small particles.

Pitch Angle Measurement › Accurate inductive sensor.› 360° turn of blade during commissioning is possible.

Energy Storage › Ultracapacitors or VRLA batteries. › Integrated ultracapacitor discharge.› HVRT compliance.

Production

Development Procedures › All components are tested in Mita-Teknik lab to verify compliance with strict requirements and wind turbine standards.› Airflow in the cabinet is verified and resulting spot temperatures are validated.

Production & Test › All cabinets are fully tested with automatic test sequencer.› All MDS cabinets are inspected for loose parts inside the cabinet.

Commissioning

Easy Commissioning › Simple calibration procedure.› Calibrating the pitch angle reading is very simple and can be done at any pitch angle, simply by entering the current position.› Verification of all sensors is fully automatic.› All calibration and parameter setting can be performed in factory.› Blade angle can be rotated ±360° without any restrictions, and without need for recalibration.

Services

Workshop Support › Installation, factory commissiong and test.

On-site Commissiong › Pitch System test, turbine startup and troubleshooting.

Documentation

Documentation is available in English or Chinese

› Report with relevant Pitch system requirements and calculations (in English only).› Technical manual.› Circuit diagram.› Commissioning guide.› Maintenance manual.

Overview

Training

Mita-Teknik offer a range of extensive training courses specifically designed to ensure you get optimal performance of your wind turbine and the best return on your investment. We offer a range of training sessions related to our MDS Pitch Control systems, ensuring you get the most out of your electrical pitch system from Mita-Teknik.

The training can take place at Mita-Teknik or at the customer site.

We offer:

› MDS Commissioning Training› MDS Maintenance Training› MDS Troubleshooting Training

Contact our Sales department for more information about available education and training offers.

Comprehensive Test ProceduresThe MDS Pitch Control is the result of thousands of engineering hours and an extensive quality test procedure. Every single component in the Pitch system is selected and tested specifically for the MDS Pitch Control.

Mita-Teknik conduct a long range of tests ensuring every component is certified in the Mita-Teknik lab. Combined with automatic tests this ensures a well-proven and high quality system.

Pitch Performance

The Mita-Teknik Load & Control engineers offer simulation of your wind turbine with all IEC61400 load cases, to ensure the pitch system meets the performance requirements in all relevant situations, and at the same time is not overdimensioned.

A simulation report list all required peak, average and aggregated values to select the optimum MDS Pitch Control solution. By these Pitch Performance calculations, you are guaranteed the optimal Pitch system for your specific wind turbine.

Maximum Safety

The MDS Pitch Control system consists of three separate and independent MDS units, working as an integrated part of the wind turbine safety system. This design gives the individual MDS unit the possibility to activate the turbine safety system in case any unsafe condition develops inside the pitch system.

The MDS Pitch Control system pitches the rotor blades collectively (CPC) or individually (IPC) to maintain rotor speed at optimum, and keep the rotor speed below maximum. For maximum safety, blades are pitched to feathering position - automatically and autonomously in case of safety system activation.

The MDS Pitch continuously monitors the communication from the wind turbine controller, and the health of all system components, including pitch motor and energy storage, and it ensures the wind turbine is stopped even in case the wind turbine control system should fail. In case of grid fault and/or grid drop, the MDS Pitch is powered form the energy backup.

Robust DesignThe MDS Pitch Control is designed for the harsh environment in the rotating hub of on- and offshore wind turbines. The MDS Pitch Control performs effortlessly in wide temperature ranges, continuous vibrations and forces induced during constant rotation and emergency stops.

The MDS allows easy service access and minimal maintenance. Additionally, the cabinet doors are designed to withstand the weight of service personnel working in the hub.

Energy Storage The energy storage delivers the power to the Pitch system during grid fault for up to three seconds (LVRT) until grid returns - and in case the grid does not return (grid drop), the energy storage also delivers the power necessary to pitching the blades to feathering position, bringing the wind turbine to a full stop.

Energy storage is available either from VRLA batteries or ultracapacitors.

Pitch motor speed (rpm)

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Maximum Yield in all Wind Speeds› Greater productivity and higher AEP › Individual or Collective Pitch for optimal blade positioning

Maximum Safety› Timing designed on customer specifications› Blades pitched to feathering position if safety system is activated› Energy storage

Load & Control Optimization› Load simulations with all IEC61400 load cases› Reduces load on the rotor› Calculates performance levels to meet performance requirements without over dimensioning the turbine

Robust Cabinets and Components › Designed for cold climate and high altitude operation › High IP class compliance › Resistant to dust and small particles

Top-shelf Components Only› Individually tested and certified in Mita-Teknik lab

One Annual Maintenance Cycle› Ensures high availability

Service Friendly › Easy to install, configure and fast commissioning› External cable plugs› Predetermined parameter sets› Final calibration during installation in factory

Remote Access› MODBUS, CANopen› Remote SW update

Track Record› +3,000 pitch systems in operation › +30 years in the wind industry› +48,000 control systems in operation

Thorough Test Procedures› Industry Standard Compliance› GL2010, GL2012 › GB/T 25386› NB/T 31018

Pitch Perfect

Precision Perfected

RequiredReliability

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ExcellentEngineering

We Make Wind Competitive

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Denmark (HQ)

Mita-TeknikHåndværkervej 1 - 8840 Rødkærsbro - DenmarkTel: +45 8665 8600 - Fax: +45 8665 9290mail@mita-teknik.com - www.mita-teknik.com

Ningbo, China

Mita-Teknik (Ningbo) Co. Ltd. Nordic Industrial Park (NIP) - No. 87 Jinhe Road,Zhenhai, Ningbo 315221, ChinaTel: +86 (574) 8630 6728 - Fax: +86 (574) 8630 6726info@mita-teknik.com.cn

Shanghai, China

Mita-TeknikRoom 527 - Yuandong Tower - 1101 South Pudong Road - Pudong District - Shanghai 200120 - Chinainfo@mita-teknik.com

Lviv, Ukraine

Mita-TeknikKulparkivska 222A - UA-79071 LvivTel: +380 322 420 432 - Fax: +380 322 420 436office_ua@mita-teknik.com

Chicago, USA

Mita-TeknikJohn Hancock Center - 875 N. Michigan AvenueSuite 3950, Chicago, IL 60611Tel: +1 312 261 6009 - Fax: +1 3121 787 8744usoffice@mita-teknik.com

Chennai, India

Mita-Teknik Technology Private Ltd.No. 1/62-15, Ravi Colony - 1st Street, Paul Wells RoadSt. Thomas Mount - Chennai 600 016, IndiaTel: +91 44 2231 2278 / 4351 9770india@mita-teknik.com

Beijing, China

Mita-TeknikRoom A411, Baikongque Art World, Building 11No. 3 Dongbinhe Road, DeshengmenXicheng District, Beijing, China