Abstract
The authors have converted an existing AC electric multiple unit train (EMU) into a battery-powered and AC-fed dual source EMU (test train) to allow interoperable service between AC electrified lines and non-electrified lines. This paper describes the features and the test results of the developed traction circuit. Results of the on-board battery performance evaluation are also reported, as follows: 1) the running distance, without recharging, of the test train fed by the on-board lithium-ion battery (1382V-83kWh) was approx. 20-30 km, 2) the maximum temperature of the battery was 51.5℃ leaving a sufficient margin before the upper limit of 65℃, 3) the time required for quick charging increases when the battery is in low temperature conditions. The running test results demonstrate that the on-board battery performance is sufficient to permit interoperable services between AC electrified and non-electrified lines.
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