Permanent-magnet synchronous generators for wind turbines and shaft generators, up to 60 MVA

Description

Based on permanent magnet technology, the manufacturer produces synchronous generators, primarily for wind power installations and marine shaft generators. The manufacturer specifies generator power for permanent magnet machines of up to 60 000 kVA at 1500 rpm and voltages up to 15 kV. The absence of an excitation winding, slip rings and rotor losses provides high efficiency, good thermal condition and minimal maintenance, while the high torque density makes it possible to build low-speed generators for direct or semi-direct drive without a multi-stage gearbox. Supply examples for wind power from the manufacturer website: a generator of 2200 kW, 1105 rpm, weighing 4.85 t; a generator of 3000 kW, 410 rpm, 16.7 t; a generator of 6525 kW, 315.3 rpm, 44 t. For shipbuilding the manufacturer supplies permanent magnet shaft generators; example: 3642 kW, 76.3 rpm, 44 t for tankers. Such a generator is installed directly on the propeller shaft and produces electricity for the onboard network while the vessel is underway, unloading the diesel generators.

Permanent magnet generators feed the grid through a full-power frequency converter that matches the variable rotational speed to the grid frequency. The machines are designed for a specific installation, in low- and medium-voltage versions, with any of the standard cooling and protection methods, in compliance with IEC, EN and VDE/DIN requirements and with the requirements of the classification societies ABS, BV, DNV and LRS. The product is intended for wind turbine manufacturers, for repair and replacement of generators at operating wind farms, and for shipbuilding and ship repair.

Technical specifications