CENTRO NACIONAL DE ENERGÍAS RENOVABLES
NATIONAL RENEWABLE ENERGY CENTER
SOLAR PHOTOVOLTAIC ENERGY
PV DESIGN WITH PVSYST SOFTWARE
1
Luis Casajús Medrano
Agadir, 04/09/2018
lcasajus@cener.com
CONTENTS
1. Definitions
2. PV design
3. Solar resource
4. PV installation
5. PV design with PVsyst software
6. Other options
7. Practical example
CENTRO NACIONAL DE ENERGÍAS RENOVABLES
NATIONAL RENEWABLE ENERGY CENTER
NORMATIVA Y CERTIFICACIÓN FV
3
1. DEFINITIONS
Solar resource: Energy coming from the sun.
Solar irradiance: Power density incident in a surface (W/m2).
Solar irradiation: Energy incident in a surface during a time period (Wh/m2).
PV modules
PV cell: Device that converts sunlight into direct current (DC).
PV modules: Association of PV cells connected.
Peak power: Power of the PV module in STC.
STC (Standard tests conditions):
Solar irradiance: 1000 W/m2
Spectral distribution: AM 1,5G
Cell temperature: 25ºC
1. DEFINITIONS
Installation
PV installation: Power system designed to supply usable solar power by means of photovoltaics.
It consists of an arrangement of several components, including solar modules to absorb and
convert sunlight into electricity, sometimes a solar inverter to change the electrical current from
DC to AC, as well as mounting, cabling, and other electrical accessories to set up a working
system.
PV generator: PV modules association to generate electric power.
PV string: PV modules connected in series.
PV inverter: Electronic device to convert DC voltage and current into AC voltage and current.
Electrical boxes: Boxes where electrical connections and protections devices are placed.
Nominal power of the PV installation: Sum of the nominal power of PV inverters.
Peak power of the PV installation: Sum of the peak power of PV modules.
Performance Ratio (PR): The Performance Ratio of the system is defined as the ratio between
the energy fed into the grid by the PV system and the energy generated by the same system
working in STC and without losses. The PR represents the deviation of the system from ideal
conditions.
1. DEFINITIONS
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