交流船荷役時の電源変動について(日本航海学会第19回講演会)

抄録

We have several surveys on the subject and get the following results ; (1) On the Koso-maru, which has cargo winches of Ward-Leonard system, the current rushes are small and, therefore, the voltage variation is also small. (2) On the Sanuki-maru and Arizona-maru, which have cargo winches operated by pole-changing induction motor or by commutator motor, the current rushes and also the voltage variations are quite large. (3) The voltage dip is almost proportional to the current rush ; the ratio of these two values are nearly equal to the transient impedance of alternator.