Marine multi-energy hybrid power system

Abstract

The invention discloses a multi-energy-source hybrid power system for a boat. The multi-energy-source hybrid power system comprises a main motive power system and an auxiliary motive power system, wherein the main motive power system is connected with a motive power load through a circuit, multi-energy-source motive power monitoring systems of the main motive power system and the auxiliary motive power system are connected through a circuit, and the work of the main motive power system and the auxiliary motive power system is monitored and controlled. In the boat navigation process, the output power of the main motive power system is higher than the power required by the boat motive power load, and the main motive power system stores the rest power into the auxiliary motive power system. When the output power of the main motive power system is lower than the power required by the boat motive power load, the main motive power system and the auxiliary motive power system simultaneously provide pushing power for the motive power load. The charging and discharging of a motive power battery realize the peak cutting and valley filling effects on a diesel and electric motor group. The peak power required by an electric network is simultaneously provided by the diesel and electric motor group, a solar battery, a wind power generator and the motive power battery, and the volume and the size of a diesel engine are reduced.

Description

technical field [0001] The invention relates to a power system, in particular to a ship multi-energy hybrid power system. Background technique [0002] Environmental pollution and energy shortage have become the main problems restricting the development of the world economy, and hybrid power systems have emerged to address these two problems. Waterway transportation has the advantages of large carrying capacity, low cost, high productivity, low energy consumption, and low investment. It is a transportation form that plays a major role in trunk transportation. However, a large number of traditional diesel engine-driven ships will have a great impact on the natural environment. , therefore, the development of hybrid ships is of great significance. [0003] Chinese patent 200710036259.1 discloses a ship electric propulsion system based on supercapacitor hybrid power, the main power source of which is supercapacitor and battery stack; Chinese patent 200820155772.2 discloses a p...

AI Technical Summary

Problems solved by technology

Waterway transportation has the advantages of large carrying capacity, low cost, high productivity, low energy consumption, and low investment. It is a transportation form that plays a major role in trunk transportation. However, a large number of traditional diesel engine-driven ships will have a great impact on the natural environment. , therefore, the development of hybrid ships is of great significance

[0003] Chinese patent 200710036259.1 discloses a ship electric propulsion system based on supercapacitor hybrid power, the main power source of which is supercapacitor and battery stack; Chinese patent 200820155772.2 discloses a power supply system for ship electric propulsion system, the power supply system includes The supercapacitor group and the battery stack connected to the propulsion control system, the above-mentioned patent cancels the conventional diesel-electric unit, and uses the battery and supercapacitor as the main power source of the ship, which can achieve zero emission of exhaust gas, but it needs to be recharged frequently. Poor endurance, once the energy storage of the supercapacitor and battery is used up, the consequences will be very serious

Chinese patent 2010103000192.X discloses an electric propulsion system including a diesel engine-generator set, a power distribution system, a propulsion motor and a propeller. The propeller in this patent uses an adjustable-pitch propeller, so that although the frequency converter is omitted, the Controllable pitch propellers are not very efficient, making the ship less manoeuvrable and manoeuvrable

Due to the limitation of electric energy storage capacity, the endurance of the power battery is very limited, so the diesel generator set needs to be started frequently, which greatly reduces the effect of energy saving and emission reduction of the system

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