Outline

  • Abstract
  • I. Introduction
  • II. Layout of the Studied System
  • III. Coordinated Error Driven Tri-Loop Controller
  • IV. Digital Simulation Results
  • V. Conclusion
  • VI- References
  • Appendix for Simulated System Parameters

رئوس مطالب

  • چکیده
  • 1. مقدمه
  • 2. طرح سیستم مورد مطالعه
  • 3. کنترلر سه حلقه ای محرک خطای هماهنگ شده
  • 4. نتایج شبیه سازی دیجیتالی
  • 5. نتیجه گیری
  • ضمیمه: پارامترهای سیستم شبیه سازی شده

Abstract

A hybrid photovoltaic- fuel cell PV/FC system for supplying an isolated small community with electrical energy is digitally simulated and presented in this paper. The proposed hybrid renewable green energy scheme has four key subsystems or components to supply the required electric loads. The first subsystem includes the renewable generation sources from PV array and Fuel Cell. The second is the interface converters used to connect the renewable energy generators to the common DC collection bus, where all generated energy is collected. The third device represents the added inverter between the common collection DC bus and the added AC bus interface to feed all AC loads. The fourth subsystem comprises all controllers including the modulated power filter. The controller main function is to ensure efficient energy utilization and dynamic matching between loads and green energy generation as well as voltage stabilization. The proposed controllers are coordinated dynamic error driven PI regulators to control the interface converters. The integrated hybrid green energy system with key subsystems are digitally simulated using the Matlab/Simulink/Sim-Power software environment and fully validated for efficient energy utilizations and enhanced interface power quality under different operating conditions and load excursions.

Keywords: - - -

Conclusions

The paper presents a hybrid FC/PV renewable energy utilization scheme for Village/Island electricity generation. The integrated renewable scheme utilized a coordinjated multi regulator error driven coordinated controller to ensure effective energy utilization, common DC and AC bus stabilization, enhanced power quality and near maximum energy utilization under varying operating conditions and load excursions. The integrated DC-AC system is digitally simulated and validated using the Matlab/Simulink/Simpower Software environment. The sample study system comprises FC, PV array source with all interface, DC-DC converters, DC-AC inverter and modulated power filter compensator for AC bus stabilization. The operation of the multi-loop error driven controller scheme for green renewable energy utilization is fully validated under sudden DC load excursions and solar-radiation variation. A modulated power filter compensator was used as voltage stabilization at the AC common bus. Novel dynamic error driven regulators were utilized to ensure a stable common DC and AC interface buses with minimum voltage, current excursion and near maximum utilization. The concept of multi-regulator decoupled controller is now being extended to other integrated AC-DC Renewable energy systems.

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