This is high power thyristor rectifier system used for Caustic Soda Rectifier for Membrane Electrolysis Up to 100kA 1000V.
Rectifier System Diagram for the Chlor-Alkali Industry
The rectifier system is composed of input high voltage switchgear, voltage regulating transformer for on load tap changer(OLTC), rectifier transformer, rectifier, DC switch, cooling water heat exchanger, power factor & harmonic compensation facility.
To get higher power factor and lower ripple, 12 pulse configuration is commonly adopted.
The system circuit diagram and system block diagram are shown here.
Green Power Provides the DC Power Supply During Electrolysis with the Membrane Process
Input AC voltage
AC 3 phase kV level, 50Hz/60Hz
Rated output DC voltage
Up to DC 1000V
Rated output DC current
Up to DC 100kA
IEC-60146 Semiconductors converters
IEC-60076 Power transformers
IEC-61378 Converters transformers
Power factor at input @rated load
Not less than 0.9 through on load tap changer without power factor improving capacitor banks, above 0.97 after compensation
Efficiency @ rated load
Stability of output current at set point
Type of control
Ingress protection class of rectifier panel
Ambient temperature for design purpose
Thyristor based, 6 pulse, 12 pulse, 24 pulse or more
Type and mode of control
150% for 1 minutes, 110% for 5 minutes, 100% long term
Rectifier thyristor cooling
Forced water cooled(cooling water is deionized water)
Transformer cooling method
OFWF, OFAF, ONAN
Transformer installation place
Indoor or Outdoor
Color touch panel
Remote control interface
4-20mA/0-10V signal and dry contacts, Modbus/Profibus/ Profinet communication
Thyristor N-1 redundancy
Deionized water/raw water exchange, with redudancy
Grounding detection and grounding fault alarm
Thyristor RC snubber
Fast action fuses
Output over voltage
Output over current
Others required by purchaser
Why choose us?
Rich experience: More than 20 years design, production and service experience for electrolysis
Meet International Standards: Exported to USA, Canada, Germany more than 40 countries.
Strong technical ability: PhD technical team, more than 20 years technology accumulation.
Reliable quality: Designed, manufactured, tested as per strict reliability standard.
Considerate service: Professional service before, during and after sales. Lifelong after service system. Customer management system
High performance price ratio: With Europe/USA quality, competitive price than Europe.