KONCAR - ELECTRONICS AND INFORMATICS LTD.

System is equiped with: two channel digital voltage regulator, fully redundant thyristor power converters in 1+1 configuration, DC field circuit breakers and rotor overvoltage protection. It is suitable for large hydro and turbogenerators. The static excitation system is based on a robust modular design, engineered and designed to meet all modes of operation of large synchronous generators. The system is characterized by high accuracy, reliability and speed. The main characteristics of this system are: dual-channel redundant configuration, automatic voltage regulator, adjustable PID type, excitation current regulator, higher-level control functions (the reactive and active compensation by current generator, the Power Factor Controller / cos (φ) regulator, embedded power system stabilizer (PSS) ), integrated limiter functions, logic and sequence control, the possibility of extending the digital and analog inputs and outputs.

KONreg S1000 with its compact design, small dimensions and integrated power converter is ideal solution for brushless and small synchronous generators, motors and motor-generator sets. It supports a number of communication protocols and in itself has built several communication interfaces. In conjunction with embeded software allows regulation up to 25A (40A, 10s) and 375Vdc. The main control loop is an automatic voltage regulator with adjustable PID controller. In addition to that in regulator are implemented other additional control functions such as power factor controller or cos (φ) regulator. Field current regulator of PI type is built in as a stand-by regulator. Synchronization function is also implemented in regulator. System allows easy adjustment of all parameters, supervision of all signals inside system and waveform capture (record) through a personal computer and the HMI device.

KONTRAC GP 550 DE converts the variable voltage from diesel generator into drive power for the traction motors, three-phase auxiliary power supply for the train onboard consumers and into DC auxiliary power supply for charging train batteries and supplying of all DC consumers on board the vehicle. KONTRAC GP 550 DE is a robust and solid unit incorporating modern IGBT technology.

KONTRAC GP 550 AC converts the power from transformer outputs of AC network into propulsion power for the traction motors. It has sinusoidal input current in phase with voltage and with low harmonic content. During braking, the converter feeds back energy to the network. All control, protective, communication and monitoring functions are implemented in one control electronics inside the converter.

KONTRAC GP 170 DC converts 600 VDC or 750 VDC line voltage into propulsion power to control and drive asynchronous traction motors on tram vehicles. The converter supplies two asynchronous traction motors connected in parallel. The electrical motor drive operates in two modes: traction mode and braking mode.

KONvert static frequency converter is a device developed for the direct transfer of energy produced by wind turbine using hardware power electronics. Universal, robust design and reliable operation, are the features of this modern products that can be applied in addition to a frequency converter for the wind turbine, to transfer energy on small hydro power plants, reversible (storage) hydropower plants, as well as a device for dynamic reactive power compensation applicable in the industry.

KONČAR’s control system KONreg SHP 100 is all-in-one solution for full automatization of sHPP. Control, turbine governing, voltage regulation, synchronization, autonomous supply, protection and connection to network are just part of KONreg SHP1000 possibilities. An intuitive user interface ensures ease of use, manipulation and control of all the functions required for the safe and optimal operation of sHPP.

KONTRAC PN225AC is a trackside converter which is used for dynamic reactive power compensation. It is used in substation facilities 110kV/25kV in which devices for fixed reactive power compensation have already been installed. The converter compensates variable amount of reactive power which can fluctuate considerably during a given time period. The range of compensated reactive power of each converter is from 225kVAr capacitive to 225kVAr inductive. If a higher range of compensated reactive power is needed, it can be accomplished by parallel connection of several converters. The input stage of the converter is made of robust components dimensioned for rolling stock converter applications which makes this converter resistant to spikes, sags and surges that are likely to appear in overhead lines. The use of this proven and reliable technical solution enables significant reduce of excessive reactive power and associated costs, thus making it a perfect solution for sustainable development