Download PV*SOL basic 4.0 User Manual

1 Program
Manual PV*SOL basic
MPP tracker
The MPP tracker automatically sets the solar array's working point at its maximum.
Parallel operation
With inverters which allow for parallel operation of the MPP trackers, the MPP trackers
can be interconnected so that the current and power range are added together.
Performance Ratio
The Performance Ratio is a measurement of the energy losses that occur within the
system in comparison with the system's optimal operating conditions. The actual solar
energy produced is measured against the nominal output. The nominal output is
calculated from the irradiation onto the tilted PV surface multiplied by the efficiency of
the module under standard test conditions (25 °C, 1000 W/m²).
PV Array, Irradiation
The irradiation onto the tilted PV array surface is the solar energy available without
shade.
PV Array, Generated Energy (AC Side)
The energy generated on the AC side of the PV array is the energy produced by the
invertor and, with full feed-in, fed into the network. Module, cabling, and inverter
losses are taken into account.
PV Array Output
The PV array output of a solar array is the maximum output it can produce with vertical
irradiation with 1000 W/m². It is therefore given in Wp or kWp. "p" stands for "peak".
Internal Rate of Return
The Net Yield is calculated according to the Internal Interest Rate Method. Capital
interest is increased up to the point at which the Net Present Value of the investment
becomes less than zero. The result can be interpreted as follows: Providing one’s own
capital (self-financing) for the investment is as good as investing one’s own capital in a
bank at the interest rate of the internal rate of return.
Solar fraction
The solar fraction states the percentage of the annual energy requirement which can
be provided by a solar system.
Valentin Software, Inc.
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