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Inverters
An inverter is a device transforming AC current into DC current
If properly controlled, the inverter converts DC Current and
reproduce AC current by controlling frequency and voltage.
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
1
Inverters
An inverter is a device transforming AC current into DC current
If properly controlled, the inverter converts DC Current and
reproduces AC current by controlling frequency and voltage.
~
R
S
T
U
V
W
INVERTER
AC current
Fixed Voltage and frequency
i.e. 400Vac 60Hz
Mot.
AC current
Variable Voltage and frequency
i.e. 200Vac 100Hz
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Inverters
An inverter is a device transforming AC current into DC current
powering an IGBT bridge.
If properly controlled,
The IGBT bridge reproduces AC current by controlling frequency and
voltage.
+VE
~
DC Current
U
V
W
R
S
Mot.
T
-VE
DIODES RECTIFIER
INVERTER
IGBT BRIDGE
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Inverters
Motion Drives
With a proper feedback an inverter is able to control
the speed and the torque of the electric motor shaft
Speed measurement
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R
S
T
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Inverters
Brakes
When the inverters reduces the speed of an high inertial load or when
the inverters drives an heavy load down power is regenerated into the
back into the inverter.
Speed measurement
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R
S
T
INVERTER
The inverter is capable of dissipating such power into a braking resistor
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Inverters
Regenerative
In a Back to Back configuration an inverter can act as a bidirectional
Active Front End that is able to regenerate power back into the grid
Speed measurement
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R
S
T
AFE
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Inverters
Regenerative
The Active Front End (AFE) is capable of feeding power into the grid
+VE
~
DC Current
U
V
W
R
S
Mot.
T
-VE
INVERTER
IGBT BRIDGE
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Photovoltaic Inverters
The Active Front End (AFE) is capable of feeding
power power produced by PV modules
DC Current
+VE
PV modules
~
R
S
T
GRID
-VE
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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Photovoltaic Inverters
Most of PV inverters needs a transformer.
In some PV inverters the transformer is included
PV modules
+VE
~
R
S
-VE
T
GRID
Transformer
INVERTER
PV INVERTER CABINET
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
9
Photovoltaic Inverters
The Active Front End (AFE) is capable of feeding
power power produced by PV modules
PV modules
+VE
~
R
S
-VE
T
GRID
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PV Inverters – Residential segment
SUNWAY MXS
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PV Inverters – Industrial segment
SUNWAY TG
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PV Inverters – Utility segment
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PMG WIND Turbines Inverters
Permanent Magnet Generators from 2kW to 200kW
WIND INVERTER CABINET
WIND BOX
+VE
~
R
S
T
GRID
-VE
Transformer
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PMG WIND Turbines Inverters
ETESIAN MINI
Single-phase 2kW – 6kW
ETESIAN ONE
Three-phase 20kW – 200kW
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PMG Biomass turbine Inverters
Permanent Magnet Generators from 2kW to 200kW
INVERTER CABINET
RECTIFIER
+VE
~
U
V
W
R
S
T
PMG
GRID
-VE
Transformer
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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PMG HYDRO turbines Inverters
Permanent Magnet Generators from 2kW to 200kW
INVERTER CABINET
RECTIFIER
+VE
~
U
V
W
R
S
T
PMG
GRID
-VE
Transformer
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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HYDRO/WIND Inverters
PM or Asynchronous GEN.
Speed measurement
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R
S
T
AFE
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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SOLAR + Water Pumps
PV modules
+VE
-VE
INVERTER
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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SOLARDRIVE
Santerno Products & Markets Scenario, Campodarsego - Nov 7th 2012
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