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In st ru c t io n m an u al
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
3 P r o d u c t d e s c r ip t io n
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Conergy Balanced Mode Technology (BMT) of the string
inverter provides for a wide input voltage range. After the
voltage equalisation by the capacitor, the string inverter
converts the direct current from the solar power system into
single-phase alternating current (230 V nominal voltage). The
downstream LC filter has the purpose of equalising the
current for feeding to the grid. Finally, the current flows
through the EMC filter and a grid protector.
The whole process is monitored by a digital control system.
This integrates both MPP tracking and fault current
monitoring.
For safety reasons every photovoltaic system must be
disconnected from the public power grid in various
circumstances such as mains interruption. For this reason,
the string inverters of the Conergy IPG series monitor the
public power grid by means of the phase-shifting process.
Every string inverter has the following data interfaces:
|
CTRL
to the Conergy IPG easyconnect (exchange of signals
including DC disconnect, surge voltage protection)
|
CAN In
to the Conergy SunReader or
to the previous string inverter
|
CAN Out
to the next string inverter
The digital control system controls
| the display (only for inverters of the Conergy IPG string
vision inverter series),
| the LED indicators.
The digital control of the inverter evaluates the following
internal measurements:
| Oon the solar power system side (DC): U and I
| On the grid side (AC): U, I, P and energy
