Reference Pictures of 15kA 380V hydrogen generation thyristor rectifier
This DC Power Supply thyristor rectifier is for hydrogen production through electrolysis of water.
Video of the thyristor rectifier
AC 3 phase 20kV ±5%, 50Hz(custom design)
Rated output DC voltage
Rated output DC current
Output power rating(max.)
Ramp up function
Local touch panel on control cabinet
Manual(local touch panel)/Auto(DCS)
Rectifier cooling type
Water cooling by deionized water
0.9@operating point 100%
Efficiency @ rated load
≥97%@operating point 100%
Stability of output current/power at set point
about <12% without filter compensation
Materials of construction of AC&DC bus bar
Type of control
Ingress protection class (IP) of rectifier panel
IP42(could reach IP54)
Ambient temperature considered for design purpose
Type of DCCT
Rectifier main circuit configuration
Three phase bridge
Type and mode of control
150% for 1 minutes, 110% for 5 minutes
Transformer cooling method
Transformer installation place
Indoor or outdoor
Transformer Silicon steel sheets
adopt top quality cold-rolled silicon steel sheet with high
permeability and low loss 30Q120
Color touch panel
Remote control interface
4-20mA signal and dry contacts Or by communication RS485 or according to customer requirement
Thyristor RC snubber
Fast action fuses
Input over/under voltage
Output current limit
Rectifier over heat
Output over voltage
Output over current
Transformer gas protection
Transformer over temperature
Control parts are in control panel
The doors is provided with suitable transparent cover
All bolts and nuts in rectifier are stainless steel material.
Rectifier outline size(L*W*H) and weight
Rectifier Main Features
◆ DSP digital control, high accuracy, high reliability
◆ Up to 96 channels of switch signal monitoring(fuse status, thyristor heatsink temperature)
◆ Touch panel HMI, record history data record, monitoring the system status, output waveform, alarm self diagnosis etc.
◆ DC output of rectifier cabinet (oxygen free copper TU1).
◆ The doors are provided with transparent cover to have a clear view of the inside equipment and components. All side covers of rectifier cabinet is removable type.
◆ The live parts are covered for safety. All access doors form part of stop circuit using limit switch to restrict access to high power equipment. The only compartments outside this scope are the LV control panel and cooling system.
◆ The synchronous signal of the rectifier cabinet is taken from secondary of the rectifier transformer and has a low voltage backup synchronous signal source.
◆ The protection level of rectifier cabinet is IP42.
◆ Rectifier busbar is anticorrosive treated.
◆ Rectifier is installed indoor.
◆ Bus bar inside rectifier adopt oxygen-free copper.
◆ Copper bus bar is tin plated.
◆ Rectifier cabinet paint color: RAL7035 or custom design
◆ Each components are marked inside rectifier.
◆ Trigger control: fully digital software regulation trigger.
◆ Overload capability: 105% rated output can run continuously, and 150% rated output can run for one minute.
◆ The thyristors’ current sharing coefficient is more than 0.9, and the current sharing coefficient between the rectifier arms is more than 0.9.
◆ The thyristor use CRRC(mother company of UK Dynex), technology and quality is same level as ABB. The thyristors are the core component of the rectifier, its optimization and selection directly relates to the reliability, service life, current sharing coefficient and overall efficiency of the system, and is very important. Thyristors with uniform parameters can be connected in parallel to minimize the discreteness of component parameters and improve the current sharing coefficient.
◆ Thyristor is N+1 configuration, if one thyristor fails, the rectifier could continue to output rated output without undue damage.
◆ The current control accuracy is better than ±1%.
◆ Mismatch of thyristors of load limited to 10%;
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