Power Electronics SD 300 Series, Getting Started Manual

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SD300 POWER ELECTRONICS
50
POWER CONNECTIONS
SD300
Installation
Install the drive following the
recommendation within this manual in
relation with the cooling requirements,
position, clearances, wiring access and
ground connection.
DC reactor
(optional)
DC reactors also contribute to improving the
power factor and harmonics reduction, but
DC reactors are usually used in facilities
with higher power supply capacity.
Motor cables
Select and install the motor cables
according to the recommendation within this
manual and the applicable national and
local codes, otherwise you could cause
EMC filtering malfunction and motor
damage.
Motor
Do not connect power factor capacitors,
surge arrestors or RFI filters to the output
side of the drive.
Topology
SD300 drive operates according to the principle of pulse-width modulation
(PWM). By varying the power supply voltage and the grid frequency, it is
possible to control the speed and torque of the connected induction three-
phase motors by means of its main components: rectifier bridge, the DC bus,
inverter bridge, and power and control board.
The SD300 includes a gate drive and a control board to control the rectifier
thyristor diode’s bridge triggering, the inverter IGBT’s bridge triggering, the
soft charge, the DC bus voltage and the motor performance. In addition, the
control board integrates the interface terminals such as communication
ports, the digital and analogue inputs and outputs, display, etc.