6
INV315-50EU
11.2019
A power control is integrated in the inverter depending on the
temperature. The following diagrams show the maximum input
power of the inverter versus the ambient temperature and air
velocity.
See diagrams on page 16:
- Power reduction Ppv / T ambient 0m/s Air velocity
- Power reduction Ppv / T ambient 0.1 m/s air velocity
Please note that the performance of your PV module
also decreases with increasing module temperature.
As a rule with approx. 0.4% / °C. This means that a
module with 330W under STC conditions will only
produce a maximum of 271W at 70°C and 1000 W/m².
5.0 Product description
The AEconversion micro-inverter is connected directly behind
one or two modules, depending on the power specification,
and converts the direct current generated into grid-compliant
alternating current. The individual conversion at each module
enables the solar energy to be optimally utilised. In addition,
the micro-inverter solves a widespread problem. Due to the
series connection in systems with central or string inverters,
the modules are dependent on each other in terms of power. If
the power of a single module drops, for example due to partial
shading or module mismatch, it negatively affects the power
of an entire string. This is referred to as the domino effect. Due
to the parallel connection in systems with micro-inverters, the
outputs of the modules are independent of each other and allow
each module to work at maximum output.
The „plug-and-play“ system avoids connection errors and makes
installation simple and safe.
There is no dangerously high DC voltage and installation time
and costs are significantly reduced. Installations are effective for
a wide range, from kilowatts to megawatts, from small family
homes to building facades. Each photovoltaic system can be
rearranged or upgraded, for example when power is increased
or structural changes are made.
Zudem wird es durch den Micro-Wechselrichter möglich
sein, die Leistungen der Photovoltaik-Anlage auf modularer
Basis zu überwachen, was die Voraussetzung für eine genaue
Anlagenüberwachung und eventuelle Problemerkennung
schafft. So werden nicht nur die Leistungssteigerungen
der Photovoltaik-Anlage gewährleistet, sondern auch
eventuelle Leistungsverluste durch eine Früherkennung und
Problemlokalisierung vermieden.
The housing of the micro-inverter is IP65 protected and
designed for operating temperatures from -25°C to 70°C. If the
temperature inside the enclosure exceeds a certain value, the
inverter automatically regulates the maximum power to protect
itself. Systems with micro-inverters are easy to design and install.
Each inverter can be mounted on the mounting rack underneath
the PV modules, but it is recommended to have a place where
emergency service work can be easily carried out.
3.3 Service
We have already placed special emphasis on the quality and
durability of the inverter during the development phase. Despite
all quality assurance measures, faults can occur in exceptional
cases. In this case, AEconversion will provide you with the
maximum possible support in order to eliminate the fault
quickly and free of bureaucratic effort. Please contact our service
department directly.
AEconversion -Service Phone: +49 2927 9194-10
In order for our service department to be able to react quickly
and correctly, the following information is absolutely necessary.
1) Information on the inverter
The details of the type designation, as well as the article number
and serial number of the inverter can be found on the type plate
of
the
unit.
Brief description of the fault:
•
Did the fault occur immediately during commissioning or only
at a later point in time?
•
Is the fault reproducible or does it occur sporadically?
•
What were the ambient conditions (irradiation) at the time of
the fault?
2) Information on the PV generator:
•
Which module manufacturer and module type was installed?
•
What does the system wiring look like?
•
What is the open-circuit voltage (Voc) of the module?
4.0 Legal regulations and technical guidelines
The legal regulations and technical guidelines are listed below.
4.1 Derating
The service life can be extended by not operating the unit at
maximum power, but by reducing this power. This is described
below for the micro inverter.
4.1.1
Derating as a function of input voltage
The maximum value of the input current from the PV module of
9.5A results in a maximum power that the inverter can convert
depending on the input voltage. The limit of 9.5A is limited by
the inverter and cannot be exceeded.
This results in the following curve of the maximum absorbed
power depending on the input voltage of the PV module.
See diagram on page 16 : Power reduction P pv / I pv
4.1.2
Derating as a function of ambient tem. / wind speed
Depending on the installation location of the inverter,
there are different environmental conditions. The ambient
temperature and the air velocity around the inverter influence
its
performance.