Efficient and grid-stable energy conversion from generation to storage Our PowerTech converters are used to convert the energy from the respective generator, motor or renewable energy sources into electrical energy that can be fed into the grid. In addition, they can also be used for the supply of such energy recovery plants and for grid stability of the particular application.
Key Facts: Energy conversion from wind- to hydropower Storage systems from battery solutions to power-to-gas Converter technology for small and very large capacities Individually adaptable due to its modular and flexible design Easy integration into existing systems and configurations Bi-directional versions Connection with power compensation is possible
Product Features: DC/AC applications Active circuit breakers for Active Front End (AFE) functionality Highly dynamic control properties Configurable reactive current characteristics Scalable modular output stages, individually adaptable User-friendly interface design incl. service software Common fieldbus systems (CAN, PROFIBUS, Ethercat etc.) supported, binary interfaces available Highly dynamic and adjustable reactive current response Automatic adjustment to grid requirements through intelligent Drive Control Unit
Product category: Storage for Integration into Distribution Networks, Off-Grid Systems
Power Supply and Grid Compensation
Compensation of voltage and frequency fluctuations in power supply networks Our PowerTech technology supports industrial consumers of electric energy as well as network operators with intelligent solutions in the field of power line compensation. In stand-alone systems and through connecting renewable energy sources and storage systems to public power supply networks, our converters make a valuable contributions to the clean and intelligent energy of tomorrow.
PowerTech converters for active grid compensation and grid compatibility Active grid compensation for industrial applications
Block diagram of the PowerTech grid compensation Active mains compensation to ensure production and quality IGBT-based mains converter for feeding in a reactive current during brief drops in voltage Provide reactive power for the grid, measures to support the power system Active harmonic compensation for best-possible grid quality Flicker compensation integrated into the power converter Adjustable cos φ
Grid compatibility (Grid Codes) in the field of renewable energies Continuous voltage and stable output during voltage drops
Reactive Current Converter will keep the system online during brief balanced grid faults of up to 15% or during unbalanced grid faults down to 0% of the grid voltage During an unbalanced short circuit of two phases in the medium voltage range, the converter uses the remaining phase to supply reactive current The LVRT-Solution ensures that the wind turbine will not disconnect from the grid during a grid breakdown (low voltage ride through - LVRT) Maintaining generator voltage, thus reducing the strain on mechanical components and ensuring a stable energy output, even during a grid breakdown
Simulation of complete technological processes with very high drive dynamics Our PowerTech network and drive converters allow high-end test rigs for motors, gearboxes and transformers. For maximum performance, we rely on intelligent power modules, accelerated air and water cooling and compact construction with a minimal component count. The result are power converters with highly dynamic response, accurate control and the lowest possible noise emissions - for example for Formula 1.
At a glance: For asynchronous and synchronous drives For a variety of high performance test applications such as trains, transformers and special motors Individually customized with scalable, modular performance levels Low-level electromagnetic emissions for sensitive test rig applications Unmatched infrastructure including full laboratory to pretest multiple test systems prior to commissioning Over 600 systems in operation worldwide
Technical Features: IGBT-based four-quadrant technology With voltage link and pulsed mains converter AFE - active front end functionality Active harmonic compensation for best possible grid quality Reactive power management with adjustable cos phi Maximum output frequency of up to 2500 Hz Maximum IGBT pulse frequency of up to 15 kHz Excellent field-oriented control properties Low losses and high immunity to electromagnetic interference Minimal electromagnetic emissions Single-phase/multi-phase solutions Modular, flexible design and construction Optimised air or water-cooling Support of common field bus systems and binary interfaces User-friendly service software and interface design
PowerTech is the power converter brand of the global Knorr-Bremse group. Knorr-Bremse is a system supplier mostly to the railway and commercial vehicle industries, with brake systems and products beyond. PowerTech technology for diverse applications in the area of Industry and Energy has many faces: whether standard optimized frequency converters, special solutions applied according to customer needs or tailored technology concepts through to installation and commissioning. PowerTech converters are used in applications where the user needs a specific form and quality of current and voltage. Therefore our clients operate in a variety of markets. In Energy Storage we have numerous answers to your demands, just from PowerTech or in cooperation with partners. We are compatible with different technologies from batteries to flywheels. Hereby, we can offer even the most customized systems when it comes to performances above 100 kW. That said, we serve commercial and industrial as well as utility markets. We are looking forward to getting in contact with you!