Industrial DC backup for boiler fans Using water-cooled drives in a “step down – step up” configuration with medium voltage motors, IC-ART and Danfoss Russia developed an industrial DC backup system to ensure reliable operation even during voltage drops in the mains. The powerful 1.2 MW system is also known as an uninterruptable motor drive (UMD) system and uses two 690 V air-cooled VACON® NXP DC/DC Converters, as shown in Figure 1. A series of 1200 kW boiler fans supply up to 10 seconds operation in the event of main grid failure. A single battery storage is connected through the two separate DC/DC converters to 4 drives. Two 200 kW drives serve the forced-draft fans and share a common VACON® NXP DC/DC Converter Two 400 kW drives serve the exhaust fans and also share a common VACON® NXP DC/DC Converter ~6 kV Т1 Step-down transformer ~ UZ1 = VACON® NXP Liquid Cooled Drives = ~ Т2.1 Step-up transformer ~ UZ2 = = ~ Т2.2 ~ UZ3 = = ~ Т2.3 ~ UZ4 = = ~ Т2.4 М ~ Motor1 М ~ Motor2 М ~ Motor3 М ~ Motor4 Figure 1: Schematic diagram of the power plant industrial DC backup system Industrial DC backup UZ5 = = UZ6 = = VACON® NXP DC/DC Converters -+ Energy storage Streamlined commissioning and service This solution is streamlined, comprising only a few elements, simple connections, and integrated Danfoss application inside, to ensure simple commissioning and service procedures. IC-ART offers a range of industrial DC backup systems known as uninterruptable motor drives (UMDs). These UMDs are flexible because they cater to different topologies different types of AC drive different energy storage technologies diverse layouts the use of existing batteries if desired Igor Zobov, General Director, IC-ART Alexandr Melentiev, IC-ART IC-ART The Engineering Center Automation of Resource-saving Technologies known as IC-ART, is located in Saint Petersburg, Russia. The team comprises 25 employees and has a long history of cooperation with Danfoss, stretching back to 1999. Danfoss Drives Russia Project managers, R&D engineers and the technical support team at Danfoss Drives Russia support customer projects with these services: Dimensioning the system Technical support Application software development Solution delivery management Commissioning support 50+ service partners IC-ART offers engineering design of AC drives and automation systems for low- and medium-voltage applications, uninterruptable motor drive (UMD) systems, and active filters for use in harmonics and reactive power compensation, as well as maintenance and repair services. Its business areas include power generation, oil and gas, and marine and offshore industries. To date, IC-ART has completed more than 700 drive automation system installations. www.ic-art.ru DKDD.PC.961.A1.02 © Copyright Danfoss Drives | 2019.10
Share
Print
Download PDF file
