arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All Systems & Data Acquisition See All Electroacoustic application See All Software See All Sensors See All Vibration Testing Equipment See All Academy See All Resource Center See All Applications See All Industries See All Insights See All Services See All Support See All Sustainability See All Our Business See All Our History See All Global Presence
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Transmission Gearboxes See All Turbo Charger See All Mechanical & structural DAQ systems See All Sound & Vibration DAQ systems See All Industrial electronics See All Electric power analyzers See All S&V Handheld devices See All Wireless DAQ Systems See All Pinnae See All Accessories for electroacoustic application See All DAQ See All Drivers API See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All Utility See All Vibration Control See All Inertial Sensor Software See All Acoustic See All Current / voltage See All Displacement See All Exciters See All Force See All Inertial Sensors See All Load cells See All Pressure See All Smart Sensors with IO-Link interface See All Strain See All Torque See All Vibration See All LDS Shaker Systems See All Power Amplifiers See All Vibration Controllers See All Training Courses See All Whitepapers See All Acoustics See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All Industrial Process Automation See All Machine automation control and navigation See All NVH See All Reliability See All Smart Sensors See All Structural Health Monitoring See All Vibration See All Weighing See All Aerospace See All Automotive & Ground Transportation See All Robotics See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Our People See All Compliance
arrow_back_ios

Main Menu

See All QuantumX See All SomatXR See All MGCplus See All Optical Interrogators See All CANHEAD See All LAN-XI See All Fusion-LN See All Accessories for industrial electronics See All GenHS See All Accessories for power analyzer and GenHS See All Handheld Software See All Accessories for S&V handheld devices See All Wireless Gateways See All Wireless Nodes See All BK Connect / PULSE See All API See All Microphone sets See All Cartridges See All Special microphones See All Acoustic calibrators See All Microphone Pre-amplifiers See All Sound Sources See All Accessories for acoustic transducers See All Accessories See All Power amplifier See All Accessories for exciters See All Accessories See All Bending / beam See All Accessories for load cells See All Strain gauges for experimental testing See All Strain gauges for transducer manufacturing (OEM) See All Accessories for strain gauges See All Non-rotating (calibration) See All Rotating See All CCLD (IEPE) accelerometer See All Charge accelerometer See All Impulse hammers / impedance heads See All Tachometer probes See All Cables See All Accessories See All Electroacoustics See All Noise Source Identification See All Handheld S&V measurements See All Sound Power and Sound Pressure See All Noise Certification See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Infrastructures Monitoring See All Rail Monitoring See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Process Weighing See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

On test: Generators for wind turbines from The Switch

the switch, Finland

Introduction

The Finland-based company The Switch is a world leader in directly driven permanent magnet generators (PMG) for wind turbines with a power output of 1 MW up to 5 MW at medium to high rotational speeds. To determine the efficiency of the generators, a torque flange from HBK is installed into the shaft train as additional measuring system.

chevron_left
chevron_right

Determination of efficiency

The technical challenge is to control high torque and, at the same time, achieve high efficiency. To determine the efficiency, two identical generators are installed such that their shafts can be directly connected for testing. The generator under test is driven by the second generator which, in this case, functions as an engine. Current and voltage measurements on both generators enable a relationship between the power output and the power consumption to be established and thus to determine the efficiency.

Torque flange in the shaft

The Switch installs a torque flange into the shaft train as an additional measuring system. A resulting benefit is the verification of the efficiency determined through measurement of the electrical parameters. Moreover, effects resulting from modifications to the engine or generator or from simulation of different loading scenarios can be determined fast and precisely. However, the main parameter for determining the efficiency is the transmitted power. Through direct measurement of torque and rotational speed of in the shaft train transmitted power, measurement uncertainty is small.

Combined with special converters and monitoring and control systems the solutions offered by the company can be integrated into the drive train of wind turbines as complete packages. The PMGs offered by The Switch feature a special, patented arrangement of the permanent magnets. This arrangement enables both high efficiency and a smooth running of the turbine. Use of a direct drive eliminates the need for a transmission gearing and results in reduced mechanical stress on the system as well as increased reliability and a longer service life.

About The Switch

The Switch was founded in 2006 with a challenger mindset. We wanted to break the status quo in the wind industry by pushing the permanent magnet (PM) generator and full-power converter drive train as the technology of choice.

Nearly 15 years later, there has been a shift in wind power technology with the 10 largest offshore and onshore turbine manufacturers all using permanent magnets as the technology of choice to reach higher powers and better efficiencies.

Then we went on to make a larger shift in the marine industry. In 2022 we became the leading PM shaft generator supplier for marine vessels with over 100 PM shaft generators delivered. Now, we are bringing PM motors to electric propulsion systems and revolutionary high-power converters designed for marine DC distribution without compromise.

More about The Switch

Technology Used

Related Case Studies