n MOTORS 10.4MW slipring motor is driving Norwegian carbon capture plant The global cement industry accounts for 5–7% of the world’s CO2 emissions every year. In an attempt to reduce this, the world’s first large-scale carbon capture facility for cement production has been built in Norway, with support from the country’s government. The installation, at HeidelbergCement’s Norcem plant, is designed to eliminate 400,000 tonnes of CO2 emissions every year – half of the site’s emissions and almost 1% of Norway’s total CO2 emissions. The captured gas will be compressed and then liquefied before being transported by ship for permanent storage under the seabed. The plant’s main compressor is being driven by a 10.4MW, 10kV slipring motor. The original design called for direct-on-line (DOL) starting motors, but this was found to be impractical because of the weak power supply network at the site, with a low short-circuit capacity. Another possibility was to use a VSD (variable-speed drive), but the slipring motor with a brushlifting device was found to be more costeffective because it uses a liquid rheostat to accelerate the motor smoothly. The water-cooled slipring motor, operating at 1,500 rpm, was supplied by WEG and is part of its 800 frame MAW line. “At WEG, we’re committed to contributing to the net-zero agenda to achieve a greener future,” says Marek Lukaszczyk, WEG’s marketing manager for Europe and the Middle East. “We continuously seek to improve industrial processes, resulting in a reduced environmental impact. In a world grappling with over 34 billion tonnes of annual CO2 emissions, opting for an energy-efficient WEG motor is more than just a technical choice – it's a contribution to the global effort for a sustainable tomorrow.” n This 10.4MW slipring motor is powering the main compressor at the Norwegian carbon capture plant In a pioneering facility, the world’s first large-scale carbon capture facility for cement production has been built in Norway. It includes a 10.4MW slipring motor to power its main compressor.
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