C o n e r g y IP G s t r in g in v e r t e r s e r ie s Instruc tio n m anual 17
3 Pro d u c t d e s c r ip t io n
ENGLISH
3.3 Functions
The core of each string inverter of the Conergy IPG series is
formed by the patented Conergy Balanced Mode Technology
(BMT) circuit concept. The circuit consists of a combination
of Insulated Gate Bipolar Transistors (IGBT), diodes and
chokes. The Conergy Balanced Mode Technology ensures a
wide voltage range (U
DC
= 220–800 V) and reduces leakage
current to below the limit values provided for in the building
services.
Wide input voltage
range
Based on the wide input voltage range U
DC
= 220–800 V
there is a wide range of ways to connect to photovoltaic
modules. You can use the space you have available to
optimum effect and at the same time reduce installation
costs.
Module protection On the basis of the Conergy Balanced Mode Technology
(BMT), the photovoltaic modules are also protected from
other electrical components of the photovoltaic system. This
technology effects, among other things, that you can install
the string inverters of the Conergy IPG series as
transformerless inverters in photovoltaic systems with
special photovoltaic modules such as thin-film modules.
Maximum Power Point You increase the yield of your photovoltaic system by
optimum tuning of the string inverter to the photovoltaic
modules. Your system will reach its optimum level of
efficiency when it is working at the Maximum Power Point
(MPP). All string inverters of the Conergy IPG series work
according to the principle of MPP tracking. This ensures that
the system yield is optimised according to the relevant
irradiation conditions. At regular intervals, this process
searches for and inserts the optimum operating point in the
curve of the solar power system.
Display Each string inverter of the Conergy IPG string vision inverter
series has a high resolution display. The display is operated
by touch, and shows all the important information for the
string inverter and the solar power system in a clear
overview. In the case of faults in the string inverter,
diagnostic information and fault warnings are shown on the
display.
Surge voltage
protection
The inputs of the solar power system and the outputs to the
public grid are fitted with Category D surge voltage
protection.
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