Development of an Overhead Line Voltage Compensation System for Railways

概要

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The authors have developed an overhead line voltage compensation system for use by trains. The system consists of a lithium-ion battery and bi-directional converter, and has been installed for use on actual streetcars. This system supports the operation of electric trains by supplying energy from the battery when voltage from the overhead line decreases during streetcar acceleration, and is also capable of absorbing regenerated power during deceleration for re-use. This system utilizes a lithium-ion battery capable of discharging a high current, normally causing the battery to generate heat when generating current to supplement the overhead line voltage, thereby contributing to battery depletion. In order to resolve this problem, the authors have developed a fan-cooled module with an attached cooling fan and have verified the effectiveness of this module.After operating for approximately six months, this system has proven to effectively compensate the overhead line voltage and operate with satisfactory results.
パワーエレクトロニクス学会の論文