Medcom - Power Electronics, Propulsion and Auxiliary Traction Converters

MEDCOM manufactures inverters for asynchronous drives and static converters for application in vehicles powered by 600VDC / 750VDC and 3,000VDC voltage tractions.

Our multisystem converters comply with the UIC-550 input voltage standard. They can also be supplied by 3,000VAC 50Hz present in Eastern Europe.

CONVERTERS FOR TRAMWAYS, TROLLEY BUSSES AND SUBWAYS

Our drive inverters are built with IGBT technology. Owing to the application of modern control systems, they ensure anti-slip control of the drive torque of the respective vehicle axles, effective electrodynamic braking within the whole speed range of the vehicle and the possibility of emergency braking.

Inverters, with an output power range from 100kW to 300kW, ensure that the driving parameters of the vehicle are very good. Static converters, with output power ranging from 5kW to 100kW, guarantee power supply for the subassemblies of the drive system and all other loads (control, lighting, compressors, and fans) of the vehicle. Apart from that, the static converters may also supply air conditioning systems.

CONVERTERS FOR RAILWAY PASSENGER COACHES

MEDCOM manufactures single and multi-system static converters that provide the LV power supply in coach installations, using the energy from the traction network. The multi-system converters have been designed to be supplied with all kinds of voltages used in the European traction systems (according to UIC-550).

The devices are presently manufactured with output power ranging from 6.5kW to 100kW. Output AC voltages have a very low level of harmonic distortion (THD), which reduces losses if loaded by motor. At the DC outputs, the converters co-operate with all types of batteries, ensuring proper charging characteristics and voltage thermal compensation.

Supplying air conditioning systems in coaches, converters may provide the variable output frequency of the inverters. An auxiliary inverter (powered from the converter or 24VDC batteries) may be supplied together with other converters. It ensures power supply for 230VAC receivers used inside coaches (e.g. for laptops).

CONVERTERS FOR ELECTRIC MULTIPLE UNITS (EMU)

MEDCOM manufactures propulsion systems for Electric Multiple Units (EMU) and the static converters used to supply AC and DC loads in EMU vehicles. Drive inverters are built with HV IGBT (6.5kV) technology. The use of air-cooling system lowers the operating costs.

Owing to the application of modern control systems, the inverters provide the control of speed of the each axle of the vehicle, effective electrodynamic braking with a driving torque within the whole range and also the possibility of emergency braking in case of blackout in the traction network.

300kW and 500kW inverters provide the motor units with very high driving parameters. Their main advantages are their very low noise level and high driving comfort.

Static converters, with power ranging from 26kW to 95kW, ensure power supply for the components of the power transmission system, as well as all other main loads (control, lighting, compressors and fans) of the traction unit. The heating, ventilation and air conditioning systems of vehicles are also supplied from static converters.

ADVANCED POWER ELECTRONICS SOLUTIONS

MEDCOM is a leading Polish company providing advanced power electronics solutions, designing, manufacturing for power generation, industrial, electric traction and military-based applications.

MEDCOM delivers state-of-the-art products as well as services and technical support. For the last 19 years MEDCOM has installed more than 9,000 units with unique features, extreme technical parameters and high reliability.