Thyristor Controlled Rectifiers (fixed)
Thyristor Controlled 12-pulse Rectifiers (TCR) manufactured by Pluton are a modern solution for metro, light rail, as well as urban electric transport and railways traction networks modernization.
Thyristor Controlled Rectifiers provide constant voltage on substation busbars over a wide range of traction loads, taking into account AC network fluctuations.
Effectiveness of Thyristor Rectifiers application for powering traction networks with regulated voltage makes it possible to develop new flexible solutions that can be adapted to the most diverse Customers’ needs.
Application of TCR to power electric transport traction networks has a number of benefits over standard diode systems.
Benefits:
- DC traction network voltage regulation, and thus energy savings (reduction of losses) in the traction network
- Implementation of electronic current protection leads to reduction in surge currents at the rectifier output
- Possibility of power and load control system implementation with online parameters setting in remote control system
- Reduction of traction substations number when designing a new line, thus reducing construction costs
- Possibility to increase the line capacity or to use more powerful trains, when modernizing existing substations with diode rectifiers
Depending on power, a Thyristor controlled rectifier includes one or two cabinets with power thyristors, fuses, protection, control and monitoring components. It is supplied by a dry three-winding converter transformer.
Tablet power thyristors are used in the rectifier. High-speed power fuses are installed in series with each thyristor to provide protection against internal short circuits. Cooling is natural air.
The rectifier also provides protection of power semiconductor devices against internal and external switching overvoltages. Protection against internal switching overvoltages is provided by RC circuits, against external overvoltages - in combination: RC circuits and varistors.
The rectifiers are equipped with microprocessor control and diagnostic system based on SOTA® controller, conforming to IEC 61131 series of PLC standards and supporting IEC 61850 protocol.
MC-POWER module is connected to SOTA® controller to control thyristor bridge.
HMI is provided by an operator panel in the form of 7-inch TFT touchscreen display, allowing the user to exchange data with the control system. Operator's panel provides:
- output of operation mode messages;
- output of warning and emergency messages;
- selection of rectifier control mode;
- setting, change and saving of parameters settings;
- rectifier event logging;
- testing of separate rectifier units;
- connection of rectifier with telecontrol system.
Power supply systems with TCRs suppose relatively high output voltage from substations and reduced losses in DC traction network. This solution applied in the conventional transport systems, allows significantly increase the distance between substations, that depends on voltage-current characteristics slope, DC network loop resistance, as well as on train traffic density.
Application of energy-efficient power supply based on TCR can significantly reduce the number of substations required for a conventional system with diode rectifiers. That allows reducing costs on materials, as well as on building of substations.
Technical parameters
Technical parameters of Thyristor controlled rectifiersHow can we help you?
Please, contact us if you have any technical queries, requests regarding customized equipment procurement or equipment delivery time
