Applications

Turbo Compressors & Blowers

KEB has earned a reputation for controlling high-speed motors used on turbo blowers and power generating systems. High speed motors can operate in excess of 100,000 rpm and typically use airfoil or magnetic bearings. Given the elevated speeds, precise control becomes imperative to mitigate vibration and prevent motor overheating.

Catalog Drive Panel Solutions

Drive Panel Solutions

Catalog High-Speed Applications

High-Speed Drives

High Speed Drives

High-speed applications are quite demanding for VFDs. They require very stable motor control algorithms with extremely fast control loops. KEB's VFD portfolio, which includes the S6 and F6 drives, meets all the requirements for high-speed blower, compressor, and chiller applications. Another important advantage in this application is KEB's extensive installed base and application experience.

Low-Pass Sinusoidal Filters

Sine Filter

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KEB Drives Comparison

F6 Drive

Output from 7.5 kW to 450 kW in seven housing sizes
Air or liquid cooled, built-in or push-through mounting
Flexible switching frequencies from 2 kHz to 16 kHz
High output frequencies up to 2,000 Hz
Special 3C3 coating for harsh environmental conditions such as in sewage treatment plants
High flow temperature of 55 °C for liquid-cooled variants
Encoderless speed control of IPM, PM, asynchronous and synchronous reluctance motors
Safe buffering of the magnetic bearing power supply
Multi-Ethernet interface for flexible connection to control systems
Integrated encoderless safety functions for safe speed monitoring
Multi-fieldbus interface for plug & play connection to the control level

S6 Drive

Power range 0.75 kW to 7.5 kW
High overload up to 250 % for optimum dynamics
Low leakage current mains filter (<5 mA) integrated, optionally without filter
Book format for space-saving control cabinet installation
Wide range of motor options, encoders and communication
Precision and maximum repeat accuracy
Integrated safety technology

KEB High Speed Solutions

-Drive controller with outputs of up to 450 kW / 800 A
-Integrated safe speed monitoring
-Motor protection and optimum system performance with sine filter
-Precise encoderless control of a wide range of motor types
-Up to 120,000 rpm and output frequencies up to 2,000 Hz
-Integrated supply for magnetic bearing controls
-3C3 protective coating for aggressive environments

Customer Highlight

Piller Blowers & Compressors

The PILLER VapoFan blowers achieve high efficiency when functioning as compressors, thanks to an optimized drive system. This system includes a specially developed synchronous motor and KEB's drive controller and sine-wave filter. Together, these components work to minimize electrical losses and reduce high steam consumption, making the process an effective energy-saving solution.

How VapoFan blowers reduce steam consumption

Efficient Solutions for Turbo Compressors & Blowers

Tailored for the most challenging applications globally, KEB Variable Frequency Drives (VFDs) are particularly well-suited for high-speed turbo compressors and blowers. The KEB F6 drive offers configurable safety features, encoder interfaces, heatsinks, and communication ports, providing a comprehensive set of options to complement and enhance your high-speed motor applications.

KEB’s F6 drive incorporates an advanced control card, available in three performance tiers: Basic, Compact, and Application. It is offered in 230, 480, and 690 VAC classes, supporting up to 1,200 Hp. Additionally, the platform provides high-speed outputs, reaching up to 2000Hz, catering to the operation of high-frequency motors. This level of customization empowers machine builders to craft precise, tailored drive solutions that align with their specific application requirements.

Complementing the F6 drive, KEB sine filters are accessible to enhance efficiency in turbo compressors and blowers by reducing rotor heating, limiting high-frequency transient emissions, and improving EMC load. This combination of control and automation solutions not only brings about notable efficiency gains but also ensures that high-speed motor applications operate more smoothly, functionally, and safely.

The Future in High-Speed Motor Technology

KEB high-speed motor technology brings precision control to high-speed, high-frequency applications, reducing vibration and motor heating. Limiting motor heating plays a significant role in optimizing system efficiency and maximizing the service life of bearings and motors in turbo compressors and blowers.

The advantages of KEB drives include increased performance via enhanced motor current quality. KEB drives help improve system reliability through powerful safety functions and reduce system costs across the product life cycle. The result? More stable, long-lasting, and dependable motor operations.

Customers choose KEB for flexible, easy-to-use control and automation products customized to fit their unique challenges and application needs. Our adaptable, turnkey solutions for high-speed, high-frequency motors can help you set a new standard in performance for turbo compressor and blower technology.