SIEMENS
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Siemens D 15.1 · 2017
SINAMICS PERFECT HARMONY GH180
Air-Cooled Drives
Introduction
2
■
Benefits
(continued)
Factory test offers the following advantages:
•
Each transformer and drive is tested as a complete system at
full load prior to delivery.
•
Factory testing allows accurate efficiency measurements to
ensure that drive performance meets customer specifications.
•
Verification of sequence of operation and protection functions
Installation and maintenance
•
The SINAMICS PERFECT HARMONY GH180 drives are easy
to install and maintain.
•
Customer needs to provide three cables in and three cables out.
There is no customer site cabling required to connect the assem-
bled sections.
•
Power cells can be pulled out easily for maintenance due to
their reduced weight and front accessible connections
(6RS4...).
•
Sophisticated microprocessor-based diagnostics pinpoint the
location of any defects.
Shorter delivery time
Some predefined drive types with specific options can be
ordered with significantly shorter delivery times when specifying
option
B19
(Express Line).
■
Application
Typical applications for SINAMICS PERFECT HARMONY
GH180 drives
SINAMICS PERFECT HARMONY GH180 drives are regularly
used by reliability and quality conscious industries to address
their most demanding applications.
Application examples:
•
Industrial pumps and fans
•
Oil & gas pumps and compressors, e.g. electrical submers-
ible pumps (ESPs) and high speed compressors
•
Induced and forced draft boiler blowers for power generation
•
Clean water and wastewater pumps
•
Multi-motor synchronous transfer applications (such as
pipelines in the oil & gas markets).
■
Design
Drive topology
SINAMICS PERFECT HARMONY GH180 drives achieve uncom-
promising performance by employing well-proven technology in
a modular configuration. Medium-voltage levels are obtained by
adding together the outputs of multiple low-voltage power cells.
The low-voltage power cells are simplified variations of standard
2-level PWM motor drives for low-voltage service, which have
been built in high volume for many years.
Topology of SINAMICS PERFECT HARMONY GH180 drive (3 cells)
For higher output voltages, up to five (6SR4...) or six (6SR3...)
power cells can be connected in series in each phase. The num-
ber of secondary windings of the integrated input transformer
increases accordingly.
Each power cell is capable of receiving input power at 750 V AC,
3-phase, 50/60 Hz (6SR4...) or 690 V AC (6SR3...) and delivering
that power to a single phase load at a variable frequency from
0.5 to the maximum rated output frequency of the drive.
Transformer
The transformer is an integral part of the drive and cannot be
specified or obtained separately. It has been carefully designed
over several development stages to function properly with the
SINAMICS PERFECT HARMONY GH180 drive.
The force-ventilated dry-type transformers have been designed
specifically for use with a particular drive type and have 9 to 18
extended delta secondaries. The secondary currents are rich in
harmonics, but the primary current is virtually sinusoidal. The
usual standards, ANSI C57-12.51 and C57-12.91 (optionally
IEC 60076-11:2004), apply to transformers with only a few wind-
ings and which are subject to sinusoidal currents. Thus, there
are some important exceptions and modifications to the applica-
tion of these standards to the GH180 transformers.
Proven IGBTs
Insulated Gate Bipolar Transistors (IGBTs) form the backbone of
the SINAMICS PERFECT HARMONY GH180 drive. Built in high
volumes and serving as a proven power device across the
industrial power control industry, IGBT technology has been in
existence for more than a decade. The stability and reliability of
IGBTs ensure a long service life and a high degree of availability.
Special
transformer
with isolated
secondaries
Input power
3-phase AC
Power
cell
B1
Power
cell
C1
Power
cell
A1
Power
cell
B2
Power
cell
C2
Power
cell
A2
Power
cell
B3
Power
cell
C3
Motor
Power
cell
A3
G_D015_EN_00009a
© Siemens AG 2017