Abstract
The authors present the feasibility demonstration of energy-saving back-to-back test method implementation for induction traction motors testing. The results of theoretical and physical modeling that support the energy effectiveness and usefulness of the proposed back-to-back method are presented in the article. The effectivity ratio of the test circuit has been calculated due to confirm the energy effectiveness and feasibility of the proposed method, and also authors identified a number of advantages of the back-to-back method for high power induction traction motors.
Highlights
In the Russian Federation, the fleet of traction electric machines involved in various industries totals hundreds of thousands, while the average power of the traction electric motor is about 1000 kW, which have found their application as traction or auxiliary machines
In the Russian Federation, according to experts, direct current motors as traction motors will be used for about another 30 years, despite the fact that, the use of asynchronous machines as traction motors has a number of advantages compared to brushed machines [1, 2]
All test circuits have sufficiently high effectivity ratio values, differ in the number of auxiliary machines included in the test station
Summary
In the Russian Federation, the fleet of traction electric machines (brushed and brushless) involved in various industries totals hundreds of thousands, while the average power of the traction electric motor is about 1000 kW, which have found their application as traction or auxiliary machines (for example, direct current traction motor EDP810 mounted on a 2ES6 locomotive has a rated power 810 kW, the NTA-1200 asynchronous traction motor set on an EP10 electric locomotive has a rated power 1200 kW). An increase in the share of asynchronous traction electric motors makes it necessary to solve a number of urgent issues related to their operation. Among these issues, we can single out the need to create new or re-equip existing repair bases and test stations, while the test stations must meet modern requirements for reliability and energy efficiency. We can single out the need to create new or re-equip existing repair bases and test stations, while the test stations must meet modern requirements for reliability and energy efficiency This can be achieved by introducing modern energy efficient methods and techniques of asynchronous machines diagnosing and testing [3].
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