| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter system for a marine vessel improving responding speed of speed control of electric motors in driving the electric motors by reducing the number of inverters on a multiwinding induction electric motor driven by a plurality of inverters. SOLUTION: This inverter system for the marine vessel is constituted of a plurality of the inverters to supply a primary electric current to the induction electric motors for main propulsion of the marine vessel, the induction electric motors for a non-propulsion device driven by each of the inverters, a speed detector and an electric current detector of the induction electric motors for main propulsion, a speed controller to output a torque electric current component command signal and a flux command corrector to output a gain signal to multiply to the flux command signal in accordance with a signal of the number of the inverters continued to the induction electric motors for main propulsion, and it is possible to restrain lowering of the responding speed of the speed control of the induction electric motors for main propulsion even if the number of the inverters is reduced as the inverter is operated by vector control operation in accordance with a speed detection signal, an electric current detection signal, the torque electric current component command signal, the flux command signal and the gain signal to multiply to the flux command signal. COPYRIGHT: (C)2009,JPO&INPIT |
