| 摘要 |
FIELD: power industry.SUBSTANCE: shipboard propulsive shaft-generator plant includes a drive shaft motor, a gear box, a shaft generator, buses, a frequency converter, three-phase stator windings, diodes, control circuits and rectifier bridges. The shaft generator through the frequency converter, a throttle, an LC filter, the first current sensor, the first voltage sensor and the first automatic circuit breaker is connected to buses of shipboard electrical consumers. Besides, an auxiliary generator mechanically attached to an auxiliary motor is connected to buses of shipboard electrical consumers by means of the second automatic circuit breaker. The frequency converter has a mode setting device, the first and the second control units, a reversible inverter and a capacitor-type accumulator of a DC link. As a shaft generator, a valve-inductor reversible shaft generator is used, to which an exciter is connected, which is connected with its input to the first output of the second control unit. Outputs of the first and the second three-phase stator windings of the shaft generator are connected to the frequency converter. Two rectifier three-phase bridges are installed in the frequency converter. A controlled shunting switch with conductivity directed opposite to diode conductivity is connected to each diode of each bridge. Control circuits of switches are connected to the second control unit. Rectifier bridges are connected to the capacitor-type accumulator.EFFECT: enlargement of a range of devices, energy efficiency and economy of a shipboard shaft-generator plant.2 cl, 1 dwg |
