EXHAUST TURBINE SUPERCHARGER, MAIN ENGINE, AND MARINE VESSEL

An exhaust turbine supercharger, a main engine, and a marine vessel, provided with: a coaxially connected compressor (21) and turbine (22); a motor-generator (32) connected to an axial end of the compressor (21); a space heater (60) that provides heat by supplying current to a winding (66) of a stator (62) in the motor-generator (32); a rotational frequency sensor (54) that detects the rotational frequency of the motor-generator (32); and a control device (5) that stops the space heater (60) when the rotational frequency of the motor-generator (32) as detected by the rotational frequency sensor (54) exceeds a predetermined rotational frequency. Thus, it is possible to suppress dew condensation in the motor-generator, and to operate the motor-generator appropriately. 在排气涡轮增压器、主机、船舶中，设置：同轴地连结的压缩机(21)以及涡轮(22)；和压缩机(21)的轴端连结的电动发电机(32)；向电动发电机(32)的定子(62)的绕组(66)供给电流从而加热的间隔加热器(60)；检测电动发电机(32)的转速的转速传感器(54)；以及在由转速传感器(54)检测出的电动发电机(32)的转速超过预先设定的规定转速时停止间隔加热器(60)的控制装置(5)，从而能够抑制在电动发电机产生结露，并能够使电动发电机正常地工作。