GE AC Instalation and operation manual V10.docx
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Drivers x6
Drivers x6
Current
sensor x3
Voltage
sensor x2
Voltage
sensor x3
Current
sensor x3
Voltage
sensor x3
PE
-U
-U
PE
PE
EMC
filter
EMC
filter
AC output
GE
U
DSP
board
DSP
board
CAN/
Ethernet
board
CAN
MODBUS/TCP
ETHERNET
V
W
N
PE
R
S
T
N
PE
(Please note that earth protection cable is only connected to the cabinet chassis).
State-of-the-art digital control is used in all CINERGIA products. In the GE case, the control
system algorithms are computed in a dual core DSP-based hardware, designed by CINERGIA,
allowing a multitask execution of the regulation systems for the Active Rectifier and the Inverter
output. This produces a fast transient response and a high performance against EUT changes. A
12 bits analog to digital conversion, with digital processing, allows a high resolution output up
to 0.1% with high stability too.
Resonant control
Control algorithms based on Resonant Control are used in both AC sides; i.e. Resonant Control
is always used in grid side but it is used in EUT side only when AC output option is chosen for the
grid emulator.
The algorithms regulation is structured in blocks resonating at a given frequency. Within the
resonant frequency each block allows the suppression of gain and phase errors of the voltage.
Thanks to this, each harmonic can be controlled independently and thus it can be generated or
suppressed, as needed.
The following diagram illustrates how the mentioned algorithms operate:
