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Inverters, Converters and Controllers
The inverter or converter is the key electronic device required for almost all Distributed Generation (DG) sources. It provides AC power at a useable voltage and frequency for connection to the utilities' electric power grid or to provide power for off-grid loads. In general, it converts the output of Photovoltaic Panels, Fuel Cells, Wind Turbines, Microturbines and other rotating machines to an appropriate AC voltage and frequency for direct domestic and industrial use. More complex units can also supply power with the proper characteristics to the utility grid. A converter is a device that accepts AC or DC power and converts it to another form of AC or DC power for direct utilization by a load or accumulation in an energy storage system. A charge controller is a device to control the charging process of energy storage products such as batteries. These devices are necessary to match the output voltage of the DG source with the rated voltage of the battery or other storage medium and to control the level and rate of charge to prevent damage to the storage medium. An output controller is a device external to an inverter, converter or utility interactive Distributed Generation Source that performs utility interface functions including, but not limited to, over- and under-voltage, over- and under-frequency, synchronization and anti-islanding protection. Follow these links to learn more about: Sample and Information Requirements Information for Regulators and Utilities UL Inverter, Converter, and Controller Products Listed to Date: 1206UL Inverter, Converter, and Controller Products Component Recognized to Date: 1Contact Information:Please contact Ross Mackie at +1-408-754-6571, Ross.S.Mackie@us.ul.com. Utilities and regulators, please contact Tim Zgonena at +1-847-664-3051, Timothy.P.Zgonena@us.ul.com. Contact Customer ServiceUL Customer Service Professionals are available from 7:00 AM - 6:00 PM across all North American time zones to provide you with a quote or project status, or to offer you assistance in resolving non-technical questions. Contact a customer service professional, learn how to submit a product for testing or begin the product submission process.
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