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The Hybrid Energy Module (HEM) is a promising configuration for a distributed energy resource (DER) that combines both thermal and electrical energy storage with a micro-source that is capable of producing a significant amount of heat in addition to electricity (e.g., fuel cells, natural gas gen-set). The availability of the energy storage components makes it possible to utilize a larger fraction...
This paper presents a mathematical model used to calculate the symmetrical components depending on load current (actual values and phases) in low voltage electrical distribution networks. Based on the mathematical model proposed, transformer losses were evaluated for two windings transformers. Case studies dealt with non-symmetric mode due to load unbalance in the low voltage distribution network...
The sliding mode control technique applied to the drive control is analyzed in terms of dynamic response and energy saving in a stand-alone network. The drive is equipped with a surface-mounted permanent magnet synchronous motor fed by renewable power through a voltage-source inverter. The design of sliding mode control is presented, and it is shown that the developed control eliminates the influence...
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