A typical vehicle control system comprises microprocessor based vehicle control unit, associated sensors, distribution boxes, contactors, and display unit with keypad. Based on the application, the hardware and configuration of the system varies.

Medha’s vehicle control systems are high performance microprocessor based modular systems that provide complete traction and propulsion control of the vehicle with continuous monitoring and extensive fault diagnostics. Major functions include Engine control, Excitation control, Propulsion control, Wheel slip control, Auxiliary controls, Protections, Fault Diagnostics, Data recording and Parameter display.

Newer generation Diesel / Electric locomotives, EMUs, DMUs and Metro cars equipped with AC Traction Motors require sophisticated Traction Converters to control these motors as part of propulsion system.

Diesel locomotive and DMU propulsion system architectures provide rectified alternator output as stable DC link bus voltage input to the Traction Converter. Traction Converter could be a combination of one or more inverters each controlling one or more traction motors.

EMU and Electric locomotive propulsion system architectures typically provide secondary winding of traction transformer as input feed to the Traction Converter. Traction Converter would have multiple line converters which convert single phase AC input to a stable DC link bus voltage. A combination of one or more inverters converts this DC bus voltage to 3-phase power controlling one or more traction motors each. For Metro cars, depending on OHE voltage or third rail DC voltage, traction converter may include line converters and inverters or only inverters. 

Medha and Traktionssysteme, Austria entered into a Joint Venture agreement (Medha Traction Equipment Pvt. Ltd.) to design and manufacture 3 phase AC Traction Motors and Traction Alternators in India.

Medha Traction Equipment Pvt. Ltd. produces AC Traction motors which complement Medha's existing and growing portfolio of traction and propulsion products.

Implemented designs for applications including diesel and electric locomotives, DMU, EMU, Metro, High Speed, Tram and Trolley bus

Recently designed motors for 1600 HP DMU, 1.3 MW EMU, and 4500 HP diesel locomotive

Medha offers a wide range of auxiliary converters that are used for powering auxiliary loads in Diesel / Electric Locomotives, EMUs, DMUs and Metros. Typical loads involved are a combination of blowers, pumps, compressors, lighting, fans, air-conditioning (HVAC), battery charging and auxiliary power required by other sub-systems.

Current product offering has a wide selection of input power type such as AC power from auxiliary winding of traction transformer, DC power from Alternators (rectified) / Traction Converter or battery banks. Offered converters are available for range of power rating from 2.5 kVA up to 300 kVA with combination of AC and DC outputs for different loads.