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SILCOVERT H SeriesSILCOVERT H Series

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Silcovert H Series

Silcovert H Series are a Multi Level Converters with LV IGBT power devices and a more

efficient and precise control for induction and synchronous motors.

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Our H-series drives are compatible with your existing motor

systems, regardless of brand or age. Part of our analysis will

address the alternative of installing a completely new

variable speed drive system versus that of adding a variable

frequency converter to an existing fixed speed motor or re-

usable equipment refurbishing. Our goal is to bring new life

to your plant through the analysis of existing motors.

Silcovert H Series

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The variable frequency converter consists of several standard assemblies:converter, inverter, d.c. link, cooling system, controller

~

=

=

~

converter inverter

cooling system

from input transformer to a.c. motor

controller

d.c. l ink

Silcovert H SeriesVCF Main Assemblies

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Converter: change of a.c. power with fixed frequency into d.c. power

~

=

=

~

converter inverter

cooling system

from input transformer to a.c. motor

controller

d.c. l ink

Inverter: change of d.c. power into a.c. power with variable voltage and frequency

D.C. link: energy storage

Cooling system: removal of the heat

Controller: control of the motor, monitor and protection of the system

Silcovert H SeriesVCF Main Assemblies

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Proven design

• VSI solutions

• multi-phase diode configurations

State-of-the-art technology

IGBT (fully-controlled, fast switching, low losses, proven)

Reliability of operation

• device selection

• sizing (application, load cycle)

• full load current test

Silcovert H SeriesConverter & Inverter

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Modularity

• Power Cell

• compactness and robustness

• fast changefoto

Switching

• insulation HV/LV by optical fibres

• monitoring

Safety

• HV and LV circuits separation

• key interlock

• IP20 with open doors

Silcovert H SeriesConverter & Inverter

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d.c. link

Integrated in the phase assembly togetherwith the capacitors (VSI)

Insulation monitor

Silcovert H Seriesd.c. Link

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Air cooling system

• forced, in open loop (T environment ≤ 45°C, size)

• draft fan on top

• low pressure inside the cabinet

• suction from the front

• fan redundancy

Silcovert H SeriesAir Cooling

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Water cooling system

• deionized, in closed loop (T raw water ≤35°C)

• water pump, redundancy

• filter cartridges

• monitoring (pressure, temperature, flow,conductivity)

• piping (PVC, stainless steel)

• water cooling unit integrated in the cabinet

• fast connections to easily remove the power assemblies

Silcovert H SeriesWater Cooling

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Water-to-water heat exchanger

• integrated in the cooling unit (VFC cabinet)

Water-to-air heat exchanger (fin fans)

• raw water not available, T external air < 50°C

• external to the cabinet

• deionized water loop only

Water chiller unit

• raw water not available, T external air up to 52°C

(higher T on request)

• special machines

waterchiller

Silcovert H SeriesWater Cooling

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Drive controller

• full digital

• motor control (V/Hz, sensorless, FOC algorithms)

• monitoring and protecting functions (transformer, VFC, motor)

• auxiliary circuits management

• hardwired and serial interface

• remote monitoring and diagnostic capability

HMI

• graphic display

• indication in full language (user friendly)

• local control of the system

Silcovert H SeriesController

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Silcovert NH

Silcovert NH - The PWM (for USA Market and special Applications) technique with high switchingfrequency allows an almost sinusoidal motor current with low total losses and ripple-free torque. Itswater cooling method permits to achieve high output power ranges.

Power range:water cooling2900/14400 KVA

Air Cooling1500/3700 KVA

Voltage:up to 4160/6000/6600

Output Frequency:5-140 Hz

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Silcovert TH

Silcovert TH – It’s configuration with several power cells connected in series per phase and thePWM technique with high switching frequency allows an almost sinusoidal motor current with lowtotal losses and ripple-free torque. Its air cooling method permits to achieve an output powerrange up to 3000 KVA.

Power range:air cooling up to 8100 KVA

water cooling up to 18700 KVA

Voltage:up to 4160/6000/6600/7200 V

Output Frequency:250 Hz (std)330 Hz max with derating

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multipulse diode front end configuration

iU1 iU2 iU3

iV1 iV2 iV3

iW1 iW2 iW3

oU

oV

oW

iU1

iU2

iU3

iV1

iV2

iV3

iW1

iW2

iW3

Silcovert H SeriesVSI Diagram

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Silcovert H SeriesApplications

Silcovert H Series can be used for various applications such as pumps ship propulsion, high torque/ overload / dynamic requirements (metals), large centrifugal loads (pumps, compressors, fans) …

With a customized retrofit you can achieve increased levels of safety, reliability andefficiency in your plant. We can assist you in the analysis to improve capacity

and reduceenergy consumption.

Our retrofitting solutions provide you with an optimum return-on-investment, long-timecost reduction thanks to a more efficient and precise control of motors, pumps etc…,

reduced down-time and less maintenance.

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