Converter Technology

Modular Converter Design

Independent of the rotating speed the CONCYCLE® wind system safeguards continuous power generation. The system is characterised by a highly uniform power output in the partial load range s well as constant torque at nominal operation. The system effectively minimises dynamic torques and the related forces acting on the mechanical components and can therefore positively influence both the product life and the availability noticeably. Due to specific reactive power management during steady operation and dynamic short circuit current supply, in case of mains failure, the system complies to the present and future grid connection requirements.

Multi-Megawatt Class utilising NGx

Continuous further technical development adapted to the customers' requirements is one main reason why the CONCYCLE® system is installed in the largest wind power turbines world-wide. The CONCYCLE® wind converter is available for the doubly-fed as well as for the fully rated converter design.

Well established functional features

• Optimum system efficiency
• High efficiency driving shaft
• Highly dynamic regulation response
• Designed for the latest grid code requirements
• Good mains compatibility with low fluctuation values
• Reactive power management
• Low inrush currents
• Active auto-reclosing detection
• Optional Soft Ride Through and compensation of asymmetrical currents
• System integration by conventional protocols and communication standards
• Integrated data logger and fault data recorder
• Menu supported commissioning tool

Design and construction

• Compact, modular design with highest power density
• Use of modern, low loss Trench-Gate-IGBTs
• Individually cascadable phase IGBT modules
• Directed heat dissipation by integrated water-cooling, optional with water-air-heat-exchanger
• Polypropylene capacitors: non-aging, maintenancefree and environmentally compliant
• Optimised service and maintenance handling by front access and compact single components
• Vibration damping construction
• Rugged design, high protection against environmental impact