Abstract
The compensation of CPL induced destabilizing effects in a bidirectional dc/dc converter (BDC), interfacing a storage unit in a typical isolated dc microgrid is presented in this chapter. The net CPL power (aggregate of power produced from RESs operating in MPPT mode and exhibiting constant power source characteristics, and CPL) is used to select the operating mode of the BDC. A robust sliding mode controller for BDC is proposed to ensure tight regulation of dc bus voltage and system stability in different operating modes. The existence of sliding mode and system stability are established analytically. The effectiveness of the controller is validated through real-time simulation studies using Opal-RT Digital Simulator. The controller demonstrates the dc bus regulation within tight limits and robustness with respect to the sufficiently large variations in the net power demand.
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Fulwani, D.K., Singh, S. (2017). Compensation of CPL Effects in a Bidirectional Buck-Boost Converter. In: Mitigation of Negative Impedance Instabilities in DC Distribution Systems. SpringerBriefs in Applied Sciences and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-2071-1_4
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DOI: https://doi.org/10.1007/978-981-10-2071-1_4
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