Standalone Hydro- Wind Hybrid Systems with Battery Storage and Squrrel Cage Generators

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Provided by: International Journal of Advanced Engineering Science and Information Technology (IJAESIT)
Topic: Storage
Format: PDF
In this paper, the authors deal with a new autonomous wind - hydro hybrid generation system consists of one Squirrel-Cage Induction Generator (SCIG) driven by a variable-speed wind turbine and another SCIG driven by a constant power hydro turbine feeding three-phase four-wire medium loads. The proposed system consists of two back-to-back-connected pulse width modulation controlled insulated-gate-bipolar-transistor based Voltage Source Converters (VSCs) with an efficient battery energy storage system at their dc link. The main purpose of the control algorithm for the VSCs are to acquire Maximum Power Tracking (MPT) by rotor speed control of a wind turbine driven SCIG under varying wind speeds and control of the frequency and magnitude the of the load voltage.
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