ELECTRIC MULTIPLE UNITS (EMU) WITH POWER CONVERTERS FOR CONTROL SPEED
 
ALEKSANDER MAZNEV, OLEG SHATNEV, ANDREY EVSTAFYEV
   
Abstract:
According to the complex program of decrease of the charges, authorized by Ministry of Railways, a number of factories at repair of electric trains ER2 replaces inductive shunts ISH-104A on power converters, that allows to cut expenses on their restoration up to 50 %. For exception of influence of characteristics of semi-conductor devices on size of factor of easing of excitation and depreciation of modernization of the circuit of easing of excitation at absence of inductive shunts in electric train ER2, the circuit in which regulation of factor of easing of excitation of engines on size of 70 % and 50 % is carried out by switching of windings of excitation of traction electric motors with use regular contactors, resistors and semi-conductor devices is developed.
   
Key Words: electric multiple units, modernization, control speed
   
 
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