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Ship hybrid power propulsion system based on active front-end frequency conversion technology

A frequency conversion technology and hybrid technology, which are applied in ship propulsion, propulsion components, propulsion engine, etc., can solve the problems of low fuel consumption rate, increased fuel consumption rate, and reduced efficiency, so as to solve harmonic pollution and increase load. efficiency, improving safety

Pending Publication Date: 2018-06-08
江苏奥畋工程科技有限公司
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Problems solved by technology

[0005] At present, almost all ships use fixed-speed diesel generator sets as power sources. However, due to the characteristics of diesel engines, when the load rate is 85-90%, the combustion is more complete, the efficiency is the highest, and the fuel consumption rate is the lowest. When the load rate decreases, the efficiency decreases. increased fuel consumption

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  • Ship hybrid power propulsion system based on active front-end frequency conversion technology

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Embodiment Construction

[0020] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a marine hybrid propulsion system based on the active front-end frequency conversion technology, which includes a variable-speed generator set 10, a generator active front-end rectifier 1, a voltage regulation module 2, a lithium battery active front-end rectifier 3, and a motor inverter Variable module 4, constant voltage and constant frequency inverter module 5, DC power distribution board 6, lithium battery pack 7, and energy management system device 8 for system management and control; also includes passive filter 9, transformer 11, and propulsion motor 12 and circuit breakers. In this embodiment, the circuit breaker is an air circuit breaker.

[0022] The variable speed generator set 10 is a variable speed diesel generator set, specifically, includes a variable speed ...

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Abstract

The present invention discloses a ship hybrid power propulsion system based on an active front-end frequency conversion technology. The system comprises a speed change generating set, an energy storage device, a transformer, a direct current distribution board, a propulsion motor, a constant voltage and constant frequency inversion module and an energy management system device. The speed change generating set is connected with a first active front-end rectifying device; a voltage regulation module and a second active front-end rectifying device are connected between the energy storage device and the transformer; the propulsion motor is connected with a motor inversion module; and air breakers are employed to connect the energy storage device with the voltage regulation module, to connect the first active front-end rectifying device with the energy storage device, to connect the first active front-end rectifying device with the direct current distribution board and to connect the secondactive front-end rectifying device with the direct current distribution board. The ship hybrid power propulsion system solves harmonic pollution, improves power supply conversion efficiency, improvesthe load rate of the generating set and achieves purposes of energy saving and emission reduction, reduction of cost and improvement of ship safety.

Description

technical field [0001] The invention relates to a ship hybrid propulsion system based on active front-end frequency conversion technology. Background technique [0002] Compared with conventional diesel engine propulsion, electric propulsion ships have the characteristics of energy saving, good maneuverability, and flexible layout. With the development of power electronics technology, more and more ships use electric propulsion. Electric propulsion ships generally use AC diesel generators to provide power, and supply power to phase-shifting transformers and AC-DC inverters through the AC switchboard, and the variable-frequency motor drives the propeller to provide power for the ship. Because the power of the propulsion motor of the electric propulsion ship is relatively large, the ratio of the capacity of the propulsion motor to the power of the ship's power station has reached more than 0.5, and some even reached 0.8. The application of high-power frequency converters has b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/34H02J9/08H02J3/01B63H21/17
CPCH02J3/01H02J7/34H02J7/345H02J9/08B63H21/17Y02E40/40
Inventor 陈梦王利鹃李垣江
Owner 江苏奥畋工程科技有限公司
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