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Ashalim solar power station in the Negev is the largest of its kind in Israel and fifth largest in the world. shows some of the 55,000 mirrors directing sunlight toward the Ashalim solar tower. Photo by Yonatan Sindel/FLASH90 1. Abstract Israel’s location and climate allow a high potential for solar energy production.
After the National Infrastructures Ministry announced it would expand its feed-in tariff scheme to include medium-sized solar-power stations ranging from 50 kilowatts to 5 megawatts, Sunday Solar Energy announced that it would invest $133 million in photovoltaic solar arrays for installation on kibbutzim.
However, even though Israeli engineers have been involved in both photovoltaic and concentrated solar power, the earliest Israeli companies which have become market leaders in their respective fields have all been involved in concentrated solar power.
The Ministry of National Infrastructures estimates solar water heating saves Israel 2 million barrels (320,000 m 3) of oil a year. On 2 June 2008, the Israeli Public Utility Authority approved a feed-in tariff for solar plants.
Grid connected PV systems always have a connection to the public electricity grid via a suitable inverter because a photovoltaic panel or array (multiple PV panels) only deliver DC power. As well as the solar panels, the additional components that make up a grid connected PV system compared to a stand alone PV system are:
In order to provide grid services, inverters need to have sources of power that they can control. This could be either generation, such as a solar panel that is currently producing electricity, or storage, like a battery system that can be used to provide power that was previously stored.
When modeling grid-connected inverters for PV systems, the dynamic behavior of the systems is considered. To best understand the interaction of power in the system, the space state model (SSM) is used to represent these states. This model is mathematically represented in an expression that states the first order of the differential equation.
Grid-connected PV inverters have traditionally been thought as active power sources with an emphasis on maximizing power extraction from the PV modules. While maximizing power transfer remains a top priority, utility grid stability is now widely acknowledged to benefit from several auxiliary services that grid-connected PV inverters may offer.
