CN104709456A - Series-parallel hybrid power system for tuna longline boat - Google Patents

Abstract

The invention relates to a series-parallel hybrid power system for a tuna longline boat. The series-parallel hybrid power system comprises a diesel engine, a power distributor, a storage battery, a motor, a fuzzy controller, a gear box and a propeller. The series-parallel hybrid power system has the advantages that different power requirements of the full-speed running working condition, the rope throwing working condition, the rope hoisting working condition can be met through the fuzzy controller by reasonably selecting and distributing a diesel engine power system and a motor power system, the diesel engine can stably work relatively efficiently, the fuel economy is improved, and pollution is lowered; the motor is high in torque reaction speed and small in fluctuation, a wider speed adjusting range is achieved, larger torque can be output at the low speed of the motor, the motor has larger overload coefficients and is high in working efficiency and good in stability, and the maneuvering characteristics of the fishing work is improved; a magnetic coupling is adopted to serve as a transmission mechanism, the transmission performance of the hybrid power system is improved, and the power consumption loss is lowered.

Description

A kind of series parallel type oil electric mixed dynamic system of tuna long liner

Technical field

The present invention relates to a kind of tuna long liner, specifically, is a kind of series parallel type oil electric mixed dynamic system of tuna long liner.

Background technology

Along with the development of Chinese pelagic fishery, the proportion of tuna longline fishery shared by China's pelagic fishery increases gradually, and tuna belongs to ocean property migratory fishes, is of high nutritive value, wide market, tuna longline fishing boat is the key equipment of pelagic fishery.

Tuna long liner is a kind ofly specifically designed to the fishing boat of fishing for deep-sea tuna, and rising under rope working condition, tuna long liner production time was more than 10 hours, and the speed of a ship or plane is lower, generally at 3-6 joint, if carry out Design Speed with this, then cannot meet fast searching and hurry to fishing ground requirement.From the angle of Promoting Industrial sustainable development, seek a kind ofly can give full play to the advantage of tuna long liner, effectively can reduce again the method for oil consumption and discharge, become the problem that people pay close attention to jointly.

Existing tuna long liner generally adopts adjustable propeller device or spacing oar device or all electric propulsion system and device.The rotary speed of diesel engine of adjustable propeller device can keep stable, but under operating in low load condition, propulsion coefficient is lower, oil consumption is comparatively large, expensive, and device is complicated, and tuna longline operation belongs to long range fishing, and maintenance difficulty is larger; Spacing oar device is that screw propeller is fixed, and needs to regulate by diesel engine and drop-gear box if change the speed of a ship or plane, and therefore, fishing boat is rising under rope working condition, the long-time low-speed running of diesel engine, and not only efficiency is low, and oil consumption is high, can cause damage to diesel engine; All electric propulsion system need meet the operating mode under full steam of tuna long liner, must be equipped with high-performance electrical motor, and therefore electrical motor volume is comparatively large, takies fishing boat space, and be difficult to layout of making rational planning in the tuna long liner of less cabin.

Therefore, need a kind of system and device of diesel engine stable operation near efficient region that can make tuna long liner badly, such fuel economy is higher, and can the discharge of decreasing pollution thing.

Summary of the invention

The object of the invention is for deficiency of the prior art, a kind of series parallel type oil electric mixed dynamic system of tuna long liner is provided.

For achieving the above object, the technical scheme that the present invention takes is:

A kind of series parallel type oil electric mixed dynamic system of tuna long liner, described series parallel type oil electric mixed dynamic system comprises: diesel engine, power distributor, storage battery, electrical motor, fuzzy controller, gear case and screw propeller, described diesel engine is coaxially connected by the first magnetic coupling with power distributor, described power distributor respectively with the second magnetic coupling, mag-dynamo connects, the second described magnetic coupling is connected with gear case, described mag-dynamo is connected with storage battery, storage battery is connected with electrical motor, described electrical motor is connected with gear case by the 3rd magnetic coupling, described gear case is connected with screw propeller, described fuzzy controller respectively with diesel engine, storage battery, electrical motor connects.

Described diesel engine is provided with first sensor and working electromagnet valve, described electrical motor is provided with the second sensor, described fuzzy controller is provided with two output ports and three input ports, described output port is connected with working electromagnet valve, storage battery respectively, and described input port is connected with first sensor, the second sensor, storage battery respectively.

Described gear case is provided with the first gear wheel-train, the second gear wheel-train and the 3rd gear wheel-train, the first described gear wheel-train is connected with the second magnetic coupling, the second described gear wheel-train is connected with screw propeller, and the 3rd described gear wheel-train is connected with the 3rd magnetic coupling.

Described magnetic coupling comprises copper rotor and p-m rotor, and described copper rotor is connected with axle drive shaft, and described p-m rotor is connected with bearing axle.

The control method of described fuzzy controller is:

(1) determination of input variable and calculating, described input variable comprises: motor speed N, the SOC SOC of storage battery, the target torque difference DELTA T of the whole ship demand torque of power coupling place and current diesel engine;

(2) determine fuzzy control rule, with production method representation control law, every bar control law can be written as:

if(N is N _i)and(SOC is SOC _m)and(ΔT isΔT _n)，then(K is K _imn)；

Wherein, N _idomain be { Low, High}, SOC _mdomain be { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB} Δ T _ndomain be { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB};

(3) determine output variable, described output variable is the torque factor K of driving engine.

The membership function of described input variable and output variable adopts Triangleshape grade of membership function.

The invention has the advantages that:

1, the present invention is a kind of new type power propulsion mode of tuna long liner, diesel power systems and motor power system is distributed by fuzzy controller choose reasonable, the different dynamic demand that can meet operating mode under full steam, throw rope operating mode, play rope operating mode, enable diesel engine stable operation near efficient region, improve fuel economy, reduce pollution.

2, the torque reaction of electrical motor rapidly, fluctuate little, have wider speed adjustable range, during low speed, larger torque can be exported, there is larger overload factor, work efficiency is high, good stability, improve the maneuvering performance of fishing operation.

3, the present invention adopts magnet coupling as transmission device, improves the transmission performance of hybrid power system, reduces power consumption penalty.

Accompanying drawing explanation

Accompanying drawing 1 is the constructional drawing of the series parallel type oil electric mixed dynamic system of a kind of tuna long liner of the present invention.

Accompanying drawing 2 is constructionals drawing of magnetic coupling.

Accompanying drawing 3 is control block diagrams of fuzzy controller.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention provided by the invention is elaborated.

The Reference numeral related in accompanying drawing and component part as follows:

1. diesel engine 11. first sensor

12. working electromagnet valve 2. power distributor

3. gear case 31. first gear wheel-train

32. second gear wheel-train 33. the 3rd gear wheel-trains

41. first magnetic coupling 42. second magnetic couplings

43. the 3rd magnetic coupling 401. axle drive shafts

402. copper rotor 403. p-m rotors

404. bearing axle 5. mag-dynamos

6. storage battery 7. electrical motor

71. second sensor 8. fuzzy controllers

9. screw propeller.

Embodiment

Please refer to Fig. 1, Fig. 1 is the constructional drawing of the series parallel type oil electric mixed dynamic system of a kind of tuna long liner of the present invention.Described series parallel type oil electric mixed dynamic system comprises: diesel engine 1, power distributor 2, storage battery 6, electrical motor 7, fuzzy controller 8, gear case 3 and screw propeller 9, described diesel engine 1 is coaxially connected by the first magnetic coupling 41 with power distributor 2, described power distributor 2 respectively with the second magnetic coupling 42, mag-dynamo 5 connects, the second described magnetic coupling 42 is connected with gear case 3, described mag-dynamo 5 is connected with storage battery 6, storage battery 6 is connected with electrical motor 7, described electrical motor 7 is connected with gear case 3 by the 3rd magnetic coupling 43, described gear case 3 is provided with the first gear wheel-train 31, second gear wheel-train 32 and the 3rd gear wheel-train 33, the first described gear wheel-train 31 is connected with the second magnetic coupling 42, the second described gear wheel-train 32 is connected with screw propeller 9, the 3rd described gear wheel-train 33 is connected with the 3rd magnetic coupling 43, described fuzzy controller 8 is provided with two output ports and three input ports, described diesel engine 1 is provided with first sensor 11 and working electromagnet valve 12, described electrical motor 7 is provided with the second sensor 71, described output port respectively with working electromagnet valve 12, storage battery 6 connects, described input port respectively with first sensor 11, second sensor 71, storage battery 6 connects.

Please refer to Fig. 2, Fig. 2 is the constructional drawing of magnetic coupling, and described magnetic coupling comprises copper rotor 402 and p-m rotor 403, and described copper rotor 402 is connected with axle drive shaft 401, and described p-m rotor 403 is connected with bearing axle 404.

Please refer to Fig. 3, Fig. 3 is the control block diagram of fuzzy controller.When described hybrid power system works, three input ports of described fuzzy controller 8 gather three data: the difference of duty requirements torque and diesel engine 1 torque, the state-of-charge SOC of storage battery 6 and electrical motor 7 rotating speed.By the difference of the demand torque of fishing boat current working and diesel engine 1 Driving Torque, the state-of-charge SOC of storage battery 6 and electrical motor 7 rotating speed are as the incoming signal of fuzzy controller 8, quantize through fuzzy control, obfuscation, subordinate function designs, fuzzy rule is formulated, the steps such as ambiguity solution draw diesel engine 1 torque distribution coefficient and electrical motor 7 torque distribution coefficient, then two output signals are outputted to respectively the working electromagnet valve 12 on diesel engine 1 and storage battery 6, the accelerator open degree of diesel engine 1 is controlled by working electromagnet valve 12, output voltage is controlled by storage battery 6, thus control the torque of diesel engine 1 and electrical motor 7 respectively.

The incoming signal of fuzzy controller 8 needs to carry out yardstick quantification, transformed within the scope of domain, value after quantification inputs as the signal of fuzzy controller 8, and the output signal obtained through Fuzzy control system quantizes through yardstick equally, and the value after quantification is as the output of fuzzy controller.The incoming signal of described fuzzy controller and the domain of output signal are divided into multiple fuzzy subset, and the incoming signal of fuzzy controller and the subordinate function of output signal all adopt triangular membership.The rotating speed N of incoming signal the difference DELTA T of actual torque and diesel engine 1 Driving Torque, the state-of-charge SOC of storage battery 6 and electrical motor 7 needed for fishing boat current working forms, and therefore needs Δ T, SOC, N to quantize.

(1) fuzzy controller input is determined and calculating

The input variable of fuzzy controller is Δ T, SOC, N, and the output variable of fuzzy controller is the torque factor K of driving engine.

Δ T: the target torque difference of the whole ship demand torque of power coupling place and current diesel engine;

SOC: the SOC of storage battery;

N: motor speed.

The difference DELTA T of the torque of fishing boat duty requirements and diesel engine torque is: Δ T=T _γ-T ₀.T _γthe torque of fishing boat duty requirements, T ₀it is diesel engine square value.In order to make fuzzy controller universalization, order

${\mathrm{\ΔT}}_{\mathrm{scale}}=5\×\frac{\mathrm{\ΔT}}{T_{e-\max }-T_0}$

When the torque of whole ship demand is positioned at the torque interval of diesel engine, i.e. T _γ=[0, T _e-max] time, Δ T _scale∈ [-5,5], can be set as domain [0,10], and the actual input value of storage battery charge state SOC becomes a certain numerical value in [0,10] scope after yardstick quantizes, as an input of fuzzy controller.

If SOC works, higher limit is SOC _high, lower limit is SOC _low, i.e. SOC ∈ [SOC _low, SOC _high], after linear transformation, the state-of-charge computing formula of storage battery 6 is:

${\mathrm{SOC}}_{\mathrm{scale}}=5\×\frac{\mathrm{SOC}-\frac{{\mathrm{SOC}}_{\mathrm{high}}+{\mathrm{SOC}}_{\mathrm{low}}}{2}}{\frac{{\mathrm{SOC}}_{\mathrm{high}}-{\mathrm{SOC}}_{\mathrm{low}}}{2}}$

The actual change scope of the incoming signal SOC of the fuzzy controller in the present invention is SOC _scale∈ [-5,5], can be set as domain [0,10].The actual input value of storage battery charge state SOC becomes a certain numerical value in [0,10] scope after yardstick quantizes, as an input of fuzzy controller.

(2) control process of fuzzy controller

The incoming signal of fuzzy controller and the subordinate function of output signal all adopt triangular membership.It is more that the fuzzy subset of fuzzy controller input variable and output variable divides, and the degree of refinement of control law is higher, input variable and output variable domain is subdivided into 11 fuzzy subsets, ensure that the accuracy rate of control.

Δ T _scalefuzzy set be { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB}

The fuzzy set of SOC is { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB}

The fuzzy set of N is { Low, High}

The fuzzy set of K is { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB}

NBB represents negative maximum, and NB represents negative large, NM represent negative in, NS represents negative little, and NSS represents that negative pole is little, and ZE represents that 0, PSS represents just minimum, and PS represents just little, and PM represents center, and PB represents honest, and PBB represents positive maximum, and Low represents low, and High represents high.

With production method representation control law, every bar control law can be written as:

if(N is N _i)and(SOC is SOC _m)and(ΔT isΔT _n)，then(K is K _imn)，

N _i∈{Low，High}；

SOC _m∈{NBB，NB，NM，NS，NSS，ZE，PSS，PS，PM，PB，PBB}；

ΔT _n∈{NBB，NB，NM，NS，NSS，ZE，PSS，PS，PM，PB，PBB}；

The rule of fuzzy control is as shown in table 1, table 2:

The fuzzy reasoning table when fuzz variable of table 1 N is High

The fuzzy reasoning table when fuzz variable of table 2 N is Low

When the demand torque of tuna long liner current working is less than diesel engine 1 Driving Torque, if the state-of-charge SOC of storage battery 6 is lower than setting value, storage battery 6 does not discharge, and diesel engine 1, except meeting the torque of fishing boat demand, also should drive mag-dynamo 5 pairs of storage batterys 6 to charge; If the state-of-charge SOC of storage battery 6 is higher than setting value, fuzzy controller 8 is by the Driving Torque of reasonable distribution diesel engine 1 and electrical motor 7, and make diesel engine 1 stable operation near efficient region, reduce fuel consumption rate with this, diesel engine 1 shuts down and do not work if desired.

When the demand torque of tuna long liner current working is greater than diesel engine 1 Driving Torque, if the state-of-charge SOC of storage battery 6 is higher than setting value, storage battery 6 discharges electricity and coordinates diesel engine 1 jointly to drive load by electrical motor 7, fuzzy controller 8 reasonable distribution controls the torque ratio of two propulsions source, thus allow diesel engine 1 stable operation near efficient region, reduce fuel consumption rate; If the state-of-charge SOC of storage battery 6 is lower than setting value, second magnetic coupling 42 disconnects, when diesel engine 1 works, power can not be delivered to gear case 3, and the power of diesel engine 1 distributes rear drive mag-dynamo 5 by power distributor 2, and the electric energy that mag-dynamo 5 produces charges to storage battery 6.

The mode of operation of tuna long liner of the present invention is as follows:

1. operating mode under full steam

During operating mode under full steam, the drive pattern of tuna long liner is that diesel engine 1 and electrical motor 7 combine drive pattern.Now, the 3rd gear wheel-train 33 be connected with electrical motor 7 main shaft by power operated first gear wheel-train 31 of diesel engine 1 in gear case 3 and car, realizes diesel engine-motor power and car, passes to screw propeller 9 by the second gear wheel-train 32 of gear case 3.

2. throw rope operating mode

When throwing rope operating mode, the drive pattern of tuna long liner is diesel-engined drive pattern.Now, diesel engine 1 works, electrical motor 7 does not work, 3rd magnetic coupling 43 disconnects, diesel engine 1 by transmission of power to power distributor 2, after the power of diesel engine 1 is distributed by power distributor 2, a part is delivered to the first gear wheel-train 31 through the second magnetic coupling 42, output to screw propeller 9 finally by by the second gear wheel-train 32, another part drives mag-dynamo 5, and mag-dynamo 5 produces power storage in storage battery 6.

3. low speed plays rope operating mode

When low speed plays rope operating mode, the speed of a ship or plane is low, the time is long, and the drive pattern of tuna long liner is electrical motor 7 drive pattern.When the state-of-charge SOC of storage battery 6 is higher than setting value, storage battery 6 provides electric power to electrical motor 7, and the power of screw propeller 9 comes from electrical motor 7 completely, and diesel engine 1 is in long-time closed condition; When the state-of-charge SOC of storage battery 6 is lower than setting value, diesel engine 1 open and stable operation near efficient region, simultaneously, second magnetic coupling 42 disconnects, when diesel engine 1 works, power can not be delivered to gear case 3, the power of diesel engine 1 distributes rear drive mag-dynamo 5 by power distributor 2, and the electric energy that mag-dynamo 5 produces charges to storage battery 6.

With the tuna long liner of 36 meters, 300 tons for research object, tuna long liner is carried out to 4h under full steam, throwing rope 6h, plays the oil consumption test of rope 12h, this test result is obtained by SIMULINK software emulation, tuna long liner adopts series parallel type oil electric mixed dynamic system of the present invention and conventional power system respectively, and oil consumption test result is in table 3;

Table 3 oil consumption test chart

From the data of table 3, the series parallel type oil electric mixed dynamic system of tuna long liner of the present invention is compared with conventional power system, there is obvious fuel economy, adopt the tuna long liner of series parallel type oil electric mixed dynamic system compared with the tuna long liner of conventional power system, single operation is fished for fuel consumption and is reduced 18%.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the inventive method; can also make some improvement and supplement, these improve and supplement and also should be considered as protection scope of the present invention.

Claims (6)

1. the series parallel type oil electric mixed dynamic system of a tuna long liner, it is characterized in that, described series parallel type oil electric mixed dynamic system comprises: diesel engine, power distributor, storage battery, electrical motor, fuzzy controller, gear case and screw propeller, described diesel engine is coaxially connected by the first magnetic coupling with power distributor, described power distributor respectively with the second magnetic coupling, mag-dynamo connects, the second described magnetic coupling is connected with gear case, described mag-dynamo is connected with storage battery, storage battery is connected with electrical motor, described electrical motor is connected with gear case by the 3rd magnetic coupling, described gear case is connected with screw propeller, described fuzzy controller respectively with diesel engine, storage battery, electrical motor connects.

2. series parallel type oil electric mixed dynamic system according to claim 1, it is characterized in that, described diesel engine is provided with first sensor and working electromagnet valve, described electrical motor is provided with the second sensor, described fuzzy controller is provided with two output ports and three input ports, described output port is connected with working electromagnet valve, storage battery respectively, and described input port is connected with first sensor, the second sensor, storage battery respectively.

3. series parallel type oil electric mixed dynamic system according to claim 1, it is characterized in that, described gear case is provided with the first gear wheel-train, the second gear wheel-train and the 3rd gear wheel-train, the first described gear wheel-train is connected with the second magnetic coupling, the second described gear wheel-train is connected with screw propeller, and the 3rd described gear wheel-train is connected with the 3rd magnetic coupling.

4. series parallel type oil electric mixed dynamic system according to claim 1, is characterized in that, described magnetic coupling comprises copper rotor and p-m rotor, and described copper rotor is connected with axle drive shaft, and described p-m rotor is connected with bearing axle.

5. series parallel type oil electric mixed dynamic system according to claim 1, is characterized in that, the control method of described fuzzy controller is:

(1) determination of input variable and calculating, described input variable comprises: motor speed N, the SOC SOC of storage battery, the target torque difference DELTA T of the whole ship demand torque of power coupling place and current diesel engine;

(2) determine fuzzy control rule, with production method representation control law, every bar control law can be written as:

if(N is N _i)and(SOC is SOC _m)and(ΔT isΔT _n)，then(K is K _{i mn})；

Wherein, N _idomain be { Low, High}, SOC _mdomain be { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB} Δ T _ndomain be { NBB, NB, NM, NS, NSS, ZE, PSS, PS, PM, PB, PBB};

(3) determine output variable, described output variable is the torque factor K of driving engine.

6. series parallel type oil electric mixed dynamic system according to claim 5, is characterized in that, the membership function of described input variable and output variable adopts Triangleshape grade of membership function.