Experimental Test Bed of a Hybrid Power Plant with a Common DC Bus and the Use of Unified Controllers for Various Sources, Loads, and Storages

At the Joint Institute for High Temperature, Russian Academy of Sciences, a power plant scheme has been developed and implemented in the form of an operating test bed, which includes several energy sources (solar battery, electrochemical generator), a storing device (accumulator battery), a base load, and an additional consumer (an electrolyzer, a heat/cold generator, or redox-flow battery). All devices are connected to a common DC bus through individual matching converters that have the same hardware and software implementation. The created test bed with a data acquisition and processing system can be used to study various schemes for control of hybrid power plants, including not only renewable energy sources, but also selected groups of consumers for excessive production of hydrogen, heat, cold, and purified water. In the course of field tests, the possibilities of controlling energy flows due to the DC bus voltage control are demonstrated: the introduction of a guaranteeing source at night and the operation into an electrolyzer simulator during peak solar generation.

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