SUPERCHARGER AND SHIP

摘要

A control unit (40) controls a first power converter so as to make the speed of a power-generating electric motor coincide with a prescribed speed command. A speed command (N*) set by a high-rank control unit (50) is inputted to a smoothing unit (41) of the control unit (40). In the smoothing unit (41), the speed command (N*) is smoothed by a primary lag element (46), and the rate of change is limited by a rate limiter (48) to a prescribed value or less. For the speed command (Ns*) outputted from the smoothing unit (41), the difference (ΔN) from the actual speed (N) of the power-generating electric motor is calculated in a difference calculator, a control command (S) based on this difference (ΔN) is generated in a control signal generator (43), and the first power converter is controlled on the basis of this control command (S). Fluctuations in the supply of power to the electric motor are thereby suppressed.