ESIGN AND M ODELLING OF S TANDALONE H YBRID P OWER S YSTEM WITH M ATLAB / S IMULINK
This paper presents a standalone hybrid power system using wind/PV/diesel/Battery energy system with Matlab/Simulink environment. PV & Wind are the primary power sources of the system and battery is used as a backup for long run application. Here we have also compare the performance of PV/Wind/Battery connected system with PV/Wind/Diesel connected hybrid power system. The most frequently used renewable energy sources are those consisting of PV module and/or wind Turbine with/or Diesel generator, and some energy storage or backup system.
Hybrid solar–wind system with battery storage operating in grid-connected and standalone mode: Control and energy management – Experimental investigation
The paper presents experimental results from the operation of a test bench constituted of a Grid-connected Hybrid system. This device includes wind and photovoltaic (PV) physical emulators, battery energy storage, load and a controlled interconnection to the Low Voltage (LV) grid. Both the Wind generation unit and the PV generation unit are connected to the weak AC grid via a single phase inverter with a lead acid accumulator. The grid power inverter is suitably controlled to permit the operation of the system either interconnected to the LV grid, or in standalone mode, with a seamless transfer from the one mode to the other. The paper provides a technical description of the Hybrid system devices and of the inverter energy management, along with extensive measurement results which demonstrate the system capability to operate in the aforementioned mode.
Combined DC and AC Integration of Energy Sources in Hybrid 3-Phase Off-Grid Systems
Hybrid systems which incorporate more than one energy source face the challenge of integrating DC sources like PV and AC sources like wind turbines or diesel gensets at the same time. Currently, two main paradigms are pursued in order to supply off-grid AC loads: DC-coupled systems and AC-coupled systems. However, DC-coupled systems are normally not able to integrate AC sources like wind generators directly but via rectifiers. AC coupled systems have to invert the electricity generated by DC sources like PV and rectify them again to charge batteries. The result of these concepts is inefficient operation and high investment costs. Conergy ISA hybrid inverters are designed to integrate DC and AC sources in their natural way: direct integration of AC sources like in a grid and maximum efficiency with direct DC integration