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Electric propulsion system for hybrid power boats and implementation method thereof

A technology of electric propulsion and hybrid power, which is applied in the direction of engines, electrical components, and circuit devices using propulsion device combinations. It can solve problems such as ship navigation safety accidents, ship loss of power, and supercapacitors are of little significance, so as to improve battery life. , the effect of ensuring the safety of navigation

Inactive Publication Date: 2011-07-13
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the main power supply of the ship, the supercapacitor and battery need to be charged and stored on the shore. Once the energy storage of the supercapacitor and battery is exhausted or fails, the ship will lose power and cause serious ship safety accidents. ;Secondly, the recoverable braking kinetic energy of the electric propulsion system is generally not generated during normal navigation of the ship, so the significance of supercapacitors in the system is not great

Method used

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  • Electric propulsion system for hybrid power boats and implementation method thereof
  • Electric propulsion system for hybrid power boats and implementation method thereof
  • Electric propulsion system for hybrid power boats and implementation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] ① Embodiment 1: Electric propulsion system in which both the primary grid and the secondary grid are AC

[0044] When the primary grid 111 and the secondary grid 211 are designed as AC grids with the same frequency and voltage, the diesel-electric set 4 is configured as an AC generator set. At this time, the power converter 9 and the corresponding switch 8 can be omitted, and the power battery charger 6 should be an AC / DC converter (rectifier) ​​with controllable output current or output voltage. The power converter 11 should be a DC / AC converter (AC inverter) with constant output voltage and output frequency. The propulsion motors 13 and 15 of the electric propulsion system are configured as AC synchronous motors or AC asynchronous motors, and the corresponding speed controllers 13 and 15 should be AC / AC converters (AC converters) with controllable output voltage and frequency. This is a typical AC electric propulsion ship application implementation.

Embodiment 2

[0045] ②Embodiment 2: The electric propulsion system in which both the primary grid and the secondary grid are DC

[0046] When the primary grid 111 and the secondary grid 211 are designed as DC grids of the same voltage, the diesel-electric unit 4 is configured as a DC generator set. At this time, the power converter 9 and the corresponding switch 8 can be omitted, and the power battery charger 6 should be a DC / DC converter (DC converter) with controllable output current or output voltage. The power converter 11 should be a DC / DC converter (DC converter) with a constant output voltage. The propulsion motors 13 and 15 of the electric propulsion system are configured as DC motors, and the corresponding speed controllers 13 and 15 should be DC / DC converters (DC voltage regulators) with controllable output voltage. This is a typical DC electric propulsion ship application implementation.

Embodiment 3

[0047] ③Embodiment 3: The primary grid is DC and the secondary grid is AC electric propulsion system

[0048] When the primary grid 111 is designed as a DC grid and the secondary grid 211 is designed as an AC grid, the diesel-electric set 4 is configured as a DC generator set. At this time, the power converters 9 and 11 should be DC / AC converters (AC inverters) with constant output voltage and frequency. The power battery charger 6 should be a DC / DC converter (DC converter) with controllable output current or output voltage. The propulsion motors 13 and 15 of the electric propulsion system are configured as AC synchronous motors or AC asynchronous motors, and the corresponding speed controllers 13 and 15 should be controllable in output voltage and frequency (AC converter).

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Abstract

The invention discloses an electric propulsion system for hybrid power boats and an implementation method thereof, wherein the electric propulsion system is suitable for inland river medium and small-sized river boats and comprises a power battery used as a system main power supply and a diesel generator set used as an auxiliary power supply. When a boat berths alongside and suspends shipping services, the power battery is charged by a shore power so as to store electric energy; when the boat sails normally, the electric propulsion system is powered by the power battery; when the stored electric energy of the power battery are completely consumed or the power battery goes wrong in the process of sailing, the auxiliary diesel generator set automatically starts and puts into operation so as to continue to supply power for the electric propulsion system to maintain the sailing of the boat; and in emergency, the power battery and the diesel generator set work together to supply power for the electric propulsion system so as to ensure the sailing safety of the boat. By using the system and the implementation method of the system disclosed by the invention, boats can realize zero discharge of waste gas / water, and remarkable effects of energy saving and expenditure cutting are generated; meanwhile, the hybrid power supply mode of the power battery and the diesel generator set ensures the sailing safety of a boat and improves the duration performance of the boat.

Description

technical field [0001] The present invention relates to the technical field of ship electric propulsion systems, in particular to a ship electric propulsion system with hybrid power supply, and also relates to an implementation method of the ship electric propulsion system with hybrid power supply. Background technique [0002] Electric propulsion system is an advanced ship propulsion method. This propulsion method can improve the technical and economic performance of the ship, has the characteristics of good maneuverability, reduces the exhaust gas emission of the ship, reduces the fuel energy consumption of the ship, and other energy-saving and environmental protection characteristics, and can obtain better dynamic characteristics at the same time. Chinese patent 201010300192.x discloses an electric propulsion system including a diesel engine-generator set (referred to as a diesel generator set, hereinafter referred to as this), a power distribution system, a propulsion mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H21/20H02J9/06
Inventor 顾伟沈爱弟黄辉周贤文黄西霞
Owner SHANGHAI MARITIME UNIVERSITY
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