PV Gap

Curtis Said:

What is islanding in relationship to photovoltaics?

We Answered:

Islanding is the undesirable effect of having electricity still in the line when the line is disconnected, a distributed source is still transmitting power.

Veronica Said:

What career would best encompass photovoltaics and the engineering of them?

We Answered:

For construction of photovoltaics, a Materials Scientist, or Materials Engineer would be necessary.

For applications of photovoltaics, an Electrical Engineer would be appropriate.

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Kent Said:

What did the oil crisis of '73 have to do with the popularization of photovoltaics?

We Answered:

Oil = Energy
Electricity = Energy
During the oil crisis of 1973 it was very hard to get gas. You could only line up for it on an odd or even day of the week depending on how many cylinders your engine ran on. So people started to ask themselves, "whatelse can I use to propel myself from point A to point B?" Answer: electricity. I highly recommend a DVD called Who Killed the Electic Car? I rented it at Blockbuster. It turns out there are all kinds of "special interests" out there, who don't want us to have options. Really.

Myrtle Said:

What is the complete procedure for securing admission in an Australian University such as UNSW?

We Answered:

Hi,

I do not know your country of residence and therefore I cannot provide any contacts. You must go through this website http://idp.com/ as it is the official website of the Australian government to help international students. Look for the IDP office in your country on Google.

Search for courses here: http://idp.com/students/coursesearch.asp…

Once you've selected the course, speak to te international students office of the University. They will be the best people to help you.

Best of luck.

Angela Said:

I have a PV (photovoltaics) systems question concerning Voltages. Please help?

We Answered:

it is acceptable if the load is very small
as the load is increased the voltage will collapse at the inverter causing more current to be drawn causing more voltage...

it is highly recommended to use the 40 feet at the high voltage (120/240V) side

for example a 480W load will consume more than 40 Amps (probably over 50) due to efficiency


Anita

Ronald Said:

what is the useful band or emf range for light in producing electricity via photovoltaics?

We Answered:

It's about 350 to 1100 nm wavelength for silicon photovoltaics.