Emulating DC constant power load: a robust sliding mode control approach |
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Authors: | Suresh Singh Vinod Kumar |
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Affiliation: | Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342011, India |
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Abstract: | This article presents emulation of a programmable power electronic, constant power load (CPL) using a dc/dc step-up (boost) converter. The converter is controlled by a robust sliding mode controller (SMC). A novel switching surface is proposed to ensure a required power sunk by the converter. The proposed dc CPL is simple in design, has fast dynamic response and high accuracy, and offers an inexpensive alternative to study converters for cascaded dc distribution power system applications. Furthermore, the proposed CPL is sufficiently robust against the input voltage variations. A laboratory prototype of the proposed dc CPL has been developed and validated with SMC realised through OPAL-RT platform. The capability of the proposed dc CPL is confirmed via experimentations in varied scenarios. |
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Keywords: | Constant power load dc programmable loads power converters multi-converter systems negative impedance instability robust control SMC |
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