20.10.2018 Views

knjiga solarna energija dobra

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

PV POWER SYSTEM CONFIGURATION AND APPLICATION 757<br />

absolutely necessary, a storage element is not needed and the solar generator can be<br />

connected directly or via an adaptive converter to the water pump.<br />

17.2.1.2 Photovoltaically powered intelligent emergency telephone<br />

Emergency telephones along motorways and roads across sparsely populated country<br />

are necessary, sometimes even life-saving [5]. Extensive cabling can be avoided, both<br />

during new road construction and when emergency roadside telephones are subsequently<br />

installed, if photovoltaically powered emergency telephones with radio contact to a central<br />

receiver station are used (see Figure 17.4).<br />

A solar generator of only a few watts power is sufficient, as the telephones are not<br />

used frequently. The “multifunctional emergency call and information system” developed<br />

at Fraunhofer ISE does not require external cabling, has an autonomous power supply and<br />

Figure 17.4<br />

Photovoltaically powered emergency telephone (Source: Fraunhofer ISE, Freiburg)

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!