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Marine propulsion controller and control method

A controller and marine technology, applied in the direction of ship propulsion, control system, propulsion components, etc., can solve the problems of increased volume and weight of the propulsion controller, inability to start the propulsion motor, unfavorable lightweight design of the propulsion system, etc. The effect of redundancy

Pending Publication Date: 2022-05-13
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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AI Technical Summary

Problems solved by technology

[0004] If there is no redundant channel, the propulsion motor cannot be started under failure conditions; setting redundant channels will increase the volume and weight of the propulsion controller, which is not conducive to the lightweight design of the propulsion system

Method used

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  • Marine propulsion controller and control method
  • Marine propulsion controller and control method
  • Marine propulsion controller and control method

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Embodiment Construction

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] refer to figure 1 As shown, the present invention discloses a marine propulsion controller, which converts the DC power supply of the battery into an AC power supply with variable frequency and amplitude through power electronic conversion technology to supply power for the propulsion motor, and the main circuit topology is the marine electric propulsion system. Important components, the DC power is converted into AC power with variable amplitude and frequency by two sets of voltage-type three-phase bridge inverter units to supply power to the propulsion motor, mainly including three-phase bridge inverter unit-NB1 (1), three-phase bridge inverter unit Bridge inverter unit two NB2 (2), mode switch one KM1 (3), mode switch two KM2 (4), open-winding three-phase propulsion motor 5 and input filter circuit 6 and other components.

[0020] The ...

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Abstract

A main circuit topology comprises a first three-phase bridge inversion unit and a second three-phase bridge inversion unit which are connected in parallel, and a first mode switching switch and a second mode switching switch which are connected between an output A phase, an output B phase, an output C phase and an open-winding three-phase propulsion motor respectively, and the output A phase, the output B phase, the output C phase and the open-winding three-phase propulsion motor can be switched by switching the mode switching switches. And a plurality of power supply modes are formed. Compared with an existing propulsion controller, the controller has the advantages that under the condition of local faults of the inversion unit, the load power supply operation mode is converted, so that a propeller can keep part of driving capacity, the redundancy and reliability of a propulsion system are improved, and the survivability of the whole ship propulsion system is improved.

Description

technical field [0001] The invention belongs to the field of marine propulsion controllers, relates to a main circuit topology of a marine propulsion controller and a control method thereof, and is particularly suitable for marine propulsion systems requiring low noise, high reliability, and high volume and weight. Background technique [0002] At present, the main circuit topologies commonly used in marine propulsion control systems include three-phase full-bridge or multi-phase bridge inverter circuits and three-phase or multi-phase propulsion motors with star-connected windings; or three-phase or multi-phase H-bridge inverter circuits and The propulsion system is composed of three-phase or multi-phase propulsion motors with open windings. Compared with the open-winding propulsion motor, the star-connected three-phase or multi-phase propulsion motor will generate relatively large vibration and noise due to the lower equivalent switching frequency of the output voltage wave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06B63H21/17
CPCH02P27/06B63H21/17
Inventor 刘成浩尹传涛谢佩韦宛野冯君华
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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