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This paper describes the development of Ihe new propulsion system utilizing permanent magnet synchronous motor for high − speed train over 400km 〆 h speed ， Deve 置 opmen 【 concept and feature of the developed equipment is described in detail． High e 齟 ency of 山 e permanent magnet synchronous rnotor enables to employ the self −ventilation with 血 e equlvalent size to that of the forced ventilation induction motor and to save the motor blower space ． The test result shows the motor efficiency reaches 97％ and the developed system has adequate output power required to high speed train over 400krnth speed ， 陶 ％ r43 ：Permanent Magne 【 Synchronous Motor ， Traction Drive system ， High Speed Train

The vapor permeability, equilibrium moisture content, hydraulic conductivity, and thermal conductivity of concrete specimens with three different strengths were measured under various conditions of temperature and relative humidity. Based on the measured results, the relationship between hygrothermal properties and strength, and the relationship between hygrothermal properties, water content, and temperature were considered. The variability of measured hygrothermal properties was clarified. Then, to evaluate the influence that the variability of hygrothermal properties has on the hygrothermal behaviors of a concrete wall, a water absorption experiment using a small-scale concrete wall with tile finishing was carried out under constant temperature. The experimental result shows a significantly difference between three specimens in the hygrothermal behaviors, which is partly because of the variability of the hygrothermal properties.

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