A study on the life cycle cost analysis of PWM modules in auxiliary power system

The maintenance cost of 8200 series electric locomotive operating in Korea is rising due to aging and lack of original technology. 8200 series electric locomotive have two auxiliary power systems. The auxiliary power system supplies power to the passenger cars. So it is related to the safety and reliability. There are many parts of the auxiliary power system. Among that, The PWM modules are very important in 8200 series electric locomotive. This is because the PWM modules is a power conversion device that is essential for powering the passenger cars. Also, the price of PWM modules is very high. So maintenance cost of PWM modules has increased. In this paper, Life Cycle Cost analysis was conducted for PWM modules of the auxiliary power system in 8200 series electric locomotive. To analyze LCC, cost of breakdown maintenance and operating is needed to apply.