CN105035296A - Automatic energy system working mode switching device and method for hybrid electric propulsion ship - Google Patents
Automatic energy system working mode switching device and method for hybrid electric propulsion ship Download PDFInfo
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Abstract
The invention discloses an automatic energy system working mode switching device for a hybrid electric propulsion ship. The automatic energy system working mode switching device comprises a series connection hybrid system, an automatic energy system working mode switching system and a power control module. The hybrid energy system working mode is determined intelligently according to a power battery SOC, a battery working temperature T and a requirement power P so that the working mode can be switched automatically. The automatic energy system working mode switching device aims to overcome the defects of manual switching, reduce failures, guarantee the safety and achieve automatic switching. Meanwhile, besides the battery remaining capacity, the battery working temperature and the power required by the ship are considered, the working performance of the power battery can be played effectively, the service life is prolonged, and energy conservation and emission reduction and runtime performance of the ship can be improved more effectively. The invention further discloses an automatic energy system working mode switching method for the hybrid electric propulsion ship.
Description
Technical field:
The present invention relates to hybrid power boats and ships energy resource system, be specifically related to a kind of hybrid power Electrical Propulsion Ship energy resource system mode of operation automatic switching control equipment and method.
Background technology:
Along with the sustainable development of global economy, the pollution of waste to environment of boats and ships discharge is on the rise.For the pollution that boats and ships cause, increasing countries and regions just actively take various effective measures to reduce the pollution of boats and ships exhaust to air.Marine electric power propulsion is the Ship propulsion method of a kind of advanced person.This propulsion mode can improve the technical and economic performance of boats and ships, have that maneuvering performance is good, low noise, energy-conserving and environment-protective feature, the exhaust emission of boats and ships can be reduced, reduce the fuel energy consumption of boats and ships, good dynamic characteristic can be obtained simultaneously.
Hybrid power Electrical Propulsion Ship refers to the energy-saving ship be made up of the oil-fired power generating unit of the clean energy resourcies such as dynamic lithium battery, solar power, wind energy and routine thereof, significantly can reduce energy consumption and the exhaust emission of boats and ships.Wherein, using lithium ion battery (electrokinetic cell) as the main power source of electric propulsion system, using diesel powerplant as accessory feed, it is a kind of inland river novel electric power propelling ship of employing energy mix pattern comparatively ripe at present.This take electrokinetic cell as the Electrical Propulsion Ship of main power source, can realize the zero-emission of boats and ships flue gas, will produce significant effects of energy saving and emission reduction.Meanwhile, the energy mix mode of electrokinetic cell and auxiliary diesel generater set, ensure that with electrokinetic cell the safety of navigation of the Electrical Propulsion Ship being main power source, improves with electrokinetic cell the duration performance of the Electrical Propulsion Ship being main power source.
The mode of operation of hybrid power boats and ships energy resource system, mainly can be divided into three kinds, is respectively electrokinetic cell powering mode, diesel-electric set electric supply pattern and hybrid power supply mode of operation.The mode of operation of traditional hybrid power boats and ships energy resource system switches main method and is divided into two kinds, and one is manual switching, and another kind switches according to the dump energy of electrokinetic cell.
The mode of operation manual switching of hybrid power boats and ships energy resource system, mainly rule of thumb switches.As according to battery electric quantity, or with ship speed or shipping kilometre etc. for Main Basis.But this micro-judgment is extensive, not necessarily accurately, optimization that is energy-conservation and that reduce discharging can not be realized, and once experience judges error, easy et out of order.
The mode of operation of hybrid power boats and ships energy resource system switches according to battery dump energy, is a kind of automatic switching mode.Such as, battery dump energy threshold range can be set: when residual capacity of battery is higher than higher limit, changeable one-tenth electrokinetic cell powering mode; And when dump energy is lower than lower limit, then switch to diesel-engine generator powering mode.This method, relative to manual switching, effectively can be avoided it not enough, can automatically switch.But the Measures compare that this dump energy according to battery carries out switching is single, does not consider the problems such as the power demand of battery operating temperature, power system.Such as, electrokinetic cell operating temperature lower than or higher than its limit value time, very large impact can be caused for the serviceability of electrokinetic cell and life-span, the energy-saving and emission-reduction efficiency of boats and ships can be had influence on simultaneously.
Summary of the invention:
The present invention is intended to the deficiency avoiding manual switching, reduces fault, ensures safety, realizes optimization that is energy-conservation and that reduce discharging, and can reach the object of automatic switchover.Meanwhile, except battery dump energy, consider again battery operating temperature problem and boats and ships demand power, effectively can play the serviceability of electrokinetic cell, improve work life, more effectively can improve energy-saving and emission-reduction and the duration performance of boats and ships.
The present invention is directed to the deficiency that traditional hybrid power boats and ships mode of operation switches, propose the device and method that a kind of mode of operation automatically switches.According to electrokinetic cell remaining capacity SOC, the Comprehensive Evaluation of the demand power P of battery operating temperature T and propulsion electric machine, the optimum mode of operation of intelligent automatic switching boats and ships energy mix system under various operating mode.
Technical scheme of the present invention is as follows:
A kind of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment, comprises series connection type hybrid power system, energy resource system mode of operation automatic switchover system and power control module.Series connection type hybrid power system comprises diesel engine, synchronous dynamo, AC/DC current transformer, the first change-over switch, electrokinetic cell, DC/DC current transformer, the second change-over switch, DC master row, DC/AC current transformer, main motor, gear case and screw propeller; Energy resource system mode of operation automatic switchover system comprises signal detection module, signal processing module, signal automatic switching module and switching over module, is responsible for the judgement to mode of operation and automatic switchover; Closed and/or the disconnection of switching over model choice first change-over switch and the second change-over switch; Power control module completes the power division to the energy according to the result that mode of operation automatically switches; By mechanical connection composition diesel generator sets between diesel engine and synchronous motor, by electrical connection AC/DC current transformer, the first change-over switch, again through DC master row, DC/AC current transformer, power supply is to main motor, main motor, by mechanical connection gear case and screw propeller, controls the speed of a ship or plane of boats and ships; Electrokinetic cell by electrical connection DC/DC current transformer, the second change-over switch, then through DC master row, DC/AC current transformer, is powered to main motor, and main motor, by mechanical connection gear case and screw propeller, controls the speed of a ship or plane of boats and ships; Signal detection module connects diesel generator sets, carriage clock signal, electrokinetic cell and main motor by signal, detected parameters electrokinetic cell SOC, temperature T and demand power, and then signal is sent to signal processing module, automatic switching module, complete the switching of switch; Another signal of synchronous signal automatic switching module is sent to power control module; Power control module, again according to the signal from electrokinetic cell and propulsion electric machine, finally transmits control signal and controls the power stage of diesel powerplant and the break-make of two-way DC/DC current transformer, complete the power division work to hybrid power energy resource system.
Signal processing module is according to the Comprehensive Evaluation of SOC, T, P tri-characteristic quantities, and mode of operation is determined in intellectuality.The mode of operation of hybrid power boats and ships mainly can be divided into three: electrokinetic cell mode of operation
diesel engine unit mode of operation
blend modes of operation
then mode of operation
characteristic quantity M=(SOC, T, P), then set up judge relation:
(A is that electrokinetic cell dump energy, battery operating temperature and propulsion electric machine demand power combine the weight of the impact of vessel operation mode).Can φ be obtained according to judge relational expression, according to maxim degree of membership principle, get Max (φ) for pattern switching foundation.
When boats and ships supply separately electric propulsion by electrokinetic cell, signal detection module can detect electrokinetic cell remaining capacity SOC, boats and ships demand power P and carriage clock signal.When the SOC of electrokinetic cell is not enough or when demand power is larger, when electrokinetic cell is not enough to bear separately power supply, after signal processing module comprehensive treatment, determine the ratio shared by each mode of operation, according to maximum subjection principle, signal automatic switching module master cock handover module, closes change-over switch.Simultaneously power control module power according to demand distributes the watt level that diesel powerplant and electrokinetic cell provide.Thus hybrid power boats and ships complete by the switching of electrokinetic cell powering mode to hybrid power supply pattern.
In like manner, when electrokinetic cell is lower than margin of safety, after signal detection module and signal processing module process, determine mode of operation proportion, by signal automatic switching module master cock handover module, open the first change-over switch, close the second change-over switch.Power control module is power according to demand, determines the magnitude of power of diesel powerplant, now power demand and all being born by diesel powerplant.Thus hybrid power boats and ships are switched to diesel generator sets mode of operation.
Periodicity of carrying out the signal of signal detection module to electrokinetic cell remaining capacity SOC, battery operating temperature T and boats and ships demand power P detects and exports each value corresponding.
Signal processing module treating process is divided into three steps.Because electrokinetic cell remaining capacity SOC, battery operating temperature T and boats and ships demand power P correspond to different subordinate function relations for three kinds of mode of operations of boats and ships, what different SOC, T or P were corresponding respective is subordinate to angle value.The first step, according to the value of SOC, T and P that detection module exports, calculates corresponding degree of membership size, obtains subordinated-degree matrix:
Wherein,
with
represent that electrokinetic cell remaining capacity SOC is to the membership values of three kinds of mode of operations;
with
represent that battery operating temperature is to the membership values of three kinds of mode of operations;
with
represent that demand power is to the membership values of three kinds of mode of operations.
Second step, carries out distribution to the weight of SOC, T and P and obtains A=(α
1, α
2, α
3), wherein α
1+ α
2+ α
3=1.
3rd step, the result of the comprehensive first step, second step, obtains three kinds of mode of operations ratio value separately, φ=AR=(μ
1, μ
2, μ
3), wherein μ
1+ μ
2+ μ
3=1.
Automatic switching module is according to the result of calculation of signal processing module, and according to maximum subjection principle, namely Max (φ), gets the maximum in three, is just optimum mode of operation, and then control system automatically switches to corresponding mode of operation: work as μ
1time maximum, optimization model is pattern one, i.e. pure battery operated mode; Work as μ
2time maximum, optimization model is pattern two, i.e. diesel engine unit mode of operation; Work as μ
3time maximum, optimization model is pattern three, i.e. hybrid power supply pattern.
The mode signal obtained compares with present mode signal, and the closed and disconnected of Systematical control first change-over switch, the second change-over switch can complete the automatic switchover of energy mix system operating mode.
Invention also provides the automatic switching method of above-mentioned hybrid power boats and ships energy resource system mode of operation automatic switching control equipment, comprise the following steps:
Step 1
Initialization: boats and ships normal/cruise, automatic switchover system carries out initialization, starts work;
Step 2
Current operation mode detects: signal detection module detects current vessel operation mode, records current vessel operation mode, to make to compare with the mode signal of automatic switching module;
Step 3
Battery parameter detects: detect battery parameter, obtain the current SOC value of battery according to corresponding calculation of parameter;
Step 4
Battery temperature detects: detect the work temperature that electrokinetic cell is real-time, as the important parameter calculating degree of membership R; Step 5
Power signal adds survey: detect propulsion electric machine and carriage clock signal, according to power and the carriage clock signal of real-time propulsion electric machine, calculate the value of demand power, as another important parameter calculating degree of membership R;
Step 6
Subordinated-degree matrix calculates: the parameter value that signal processing module received signal detection module sends, according to the membership between electrokinetic cell SOC, battery operating temperature T and demand power and three kinds of mode of operations, calculate corresponding subordinated-degree matrix R value.
Step 7
Trip current calculates: the weight A obtained according to the distribution of signal processing module to three characteristic quantity weights, and then by subordinated-degree matrix R and weight A, calculates hybrid power boats and ships mode of operation trip current φ=AR=(μ
1, μ
2, μ
3).
Step 8
Mode decision: automatic switching module, according to μ
1, μ
2, μ
3the size of three: if μ
1> μ
2and μ
1> μ
3time, then export as pattern one, i.e. electrokinetic cell powering mode; If μ
1≤ μ
2and μ
2> μ
3time, then export as pattern two, be diesel generator sets powering mode; If μ
1> μ
2and μ
1≤ μ
3or μ
1≤ μ
2and μ
2≤ μ
3time, then export as pattern three, i.e. hybrid power supply pattern.
Step 9
Mode signal compares: the mode signal result exported according to step 8, compares with the current vessel operation mode signal accepted.
Step 10
Consistency discrimination: judge conformability.If consistent, then return and again detect, enter and circulate next time.If inconsistent, then sending mode switching signal.
Step 11
Pattern switches: automatic switching module 19 master cock handover module 15, is switched to corresponding mode of operation, then gets back to beginning, enter and circulate next time.
Below in conjunction with drawings and Examples, the present invention is further described.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment of the present invention three kinds of mode of operations;
Fig. 2 is the structural representation of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment of the present invention;
Fig. 3 is the principle of work schematic diagram of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment of the present invention;
Fig. 4 is the operational flow diagram of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment of the present invention.
In figure, 1 be diesel engine, 2 are synchronous dynamos, 3 are AC/DC current transformers, 4 are first change-over switches, 5 are electrokinetic cells 5,6 are DC/DC current transformers, 7 are second change-over switches, 8 are DC master rows, 9 are DC/AC current transformers, 10 are main motors 10,11 are gears case, 12 are screw propellers, 13 are diesel powerplants, 17 are signal detection modules, 18 are signal processing modules, 19 are signal automatic switching modules, 15 is switching over modules.
specific implementation method:
Hybrid power boats and ships system three kinds of mode of operations as shown in Figure 1.As Fig. 1 (a) is depicted as pure electronic mode of operation, now the second change-over switch 7 closes, first change-over switch 4 disconnects, and is powered separately by electrokinetic cell 5 to electrical motor 10, and diesel powerplant 13 (comprising diesel engine 1 and synchronous dynamo 2) quits work; Fig. 1 (b) is depicted as diesel engine unit mode of operation, and now the first change-over switch 4 closes, and the second change-over switch 7 disconnects, and is powered separately by diesel powerplant 13 to electrical motor 10; Fig. 1 (c) is depicted as blend modes of operation, and now the first change-over switch 4, second change-over switch 7 is all closed, is jointly powered to electrical motor 10 by diesel powerplant 13 and electrokinetic cell 5.
Power to propulsion electric machine 10 by electrokinetic cell 5 by DC/DC current transformer 6, DC master row 8 and DC/AC current transformer 9 under boats and ships normal/cruise state, ship's navigation is promoted by gear case 11 variable speed drive (VSD) screw propeller 12, now the second change-over switch 7 closes, first change-over switch 4 disconnects, and diesel powerplant 13 does not work;
When electrokinetic cell 6 energy storage deficiency can not be powered separately, automatic switching control equipment judges that optimum mode of operation is as hybrid power supply pattern.Now, first change-over switch 4 closes automatically, AC/DC current transformer 3 is passed through, again by DC master row 8 and DC/AC current transformer 9 by DC/DC current transformer 6 and diesel powerplant 13 by electrokinetic cell 6, common main motor 10 of giving is powered, and promotes ship's navigation by gear case 11 variable speed drive (VSD) screw propeller 12.Thus system completes and is switched to hybrid power supply pattern from power battery powered mode.
When electrokinetic cell 6 energy storage be finished or et out of order time, automatic switching control equipment judges that optimum mode of operation is as diesel-electric set electric supply pattern.Now, the first change-over switch 4 closes automatically, and the second change-over switch 7 disconnects, and diesel powerplant 13 is powered by AC/DC current transformer 3, DC master row 8 and DC/AC current transformer 9 pairs of propulsion electric machines 10, and gear case 11 carrying screws 12 promotes ship's navigation.Thus system completes and is switched to diesel-electric set electric supply pattern from hybrid power supply pattern.
Hybrid power boats and ships energy resource system mode of operation automatic switching control equipment system architecture as shown in Figure 2.Diesel engine 1, synchronous dynamo 2, AC/DC current transformer 3, change-over switch 4, electrokinetic cell 5, DC/DC current transformer 6, change-over switch 7, DC master row 8, DC/AC current transformer 9, main motor 10, gear case 11 and screw propeller 12 form series connection type hybrid power system jointly; Signal detection module 17, signal processing module 18, signal automatic switching module 19 and switching over module 15 form the structure of energy resource system mode of operation automatic switchover system core, complete the judgement to mode of operation and automatic switchover; Power control module 14 completes the power division to the energy according to the result that mode of operation automatically switches.Wherein diesel engine 1 and synchronous dynamo 2 form diesel powerplant 13.
Forming diesel generator sets 13 by being mechanically connected between diesel engine 1 and synchronous motor 2, by electrical connection AC/DC current transformer, change-over switch 4, to DC master row 8, DC/AC current transformer 9, powering to main motor 10.Propulsion electric machine, by mechanical connection gear case and screw propeller, controls the speed of a ship or plane of boats and ships; In like manner, electrokinetic cell 5 also by electrical connection DC/DC current transformer, change-over switch 7, to DC master row 8, DC/AC current transformer 9, is powered to main motor 10; Signal detection module 17 connects diesel generator sets 13, carriage clock signal 16, electrokinetic cell 5 and main motor 10 by signal, detected parameters electrokinetic cell SOC, temperature T, and demand power P, and then signal is sent to signal processing module 18, automatic switching module 19, completes the switching of switch. another signal of synchronous signal automatic switching module 19 is sent to power control module 14.Power control module 14, again according to the signal from electrokinetic cell 5 and propulsion electric machine 10, finally transmits control signal and controls the power stage of diesel powerplant 13 and the break-make of two-way DC/DC current transformer 6.Thus, complete the power division work to hybrid power energy resource system.
When boats and ships supply separately electric propulsion by electrokinetic cell, signal detection module 17 can detect the parameter SOC of electrokinetic cell 5, the demand power of main motor 10 and carriage clock signal 16.When the SOC of electrokinetic cell 5 is not enough or when demand power is larger, when electrokinetic cell 5 is not enough to bear separately power supply, after signal processing module 18 comprehensive treatment, determine the ratio shared by each mode of operation, according to maximum subjection principle, signal automatic switching module 19 master cock handover module 15, closes change-over switch 4.Simultaneously power control module 14 power according to demand distributes the watt level that diesel powerplant 13 and electrokinetic cell 5 provide.Thus hybrid power boats and ships complete by the switching of electrokinetic cell powering mode to hybrid power supply pattern.
In like manner, when electrokinetic cell is lower than margin of safety, after signal detection module 17 and signal processing module 18 process, determine mode of operation proportion, by signal automatic switching module 19 master cock handover module 15, opening switch 4, closing switch 7.Power control module 14 power according to demand, determines the magnitude of power of diesel powerplant 13, now power demand and all being born by diesel powerplant 13.Thus hybrid power boats and ships are switched to diesel generator sets mode of operation.
As shown in Figure 3, its energy resource system mode of operation automatic switchover system forms primarily of signal detection module 17, signal processing module 18 and automatic switching module 19 principle of work of hybrid power boats and ships energy resource system mode of operation automatic switching control equipment of the present invention.
Signal detection module 17 carries out periodicity to the signal of electrokinetic cell remaining capacity SOC, battery operating temperature T and boats and ships demand power P detect and export each value corresponding.
Signal processing module 18 is divided into three steps, because electrokinetic cell remaining capacity SOC, battery operating temperature T and boats and ships demand power P correspond to different subordinate function relations for three kinds of mode of operations of boats and ships, what different SOC, T or P were corresponding respective is subordinate to angle value.The first step, according to the value of SOC, T and P that detection module exports, calculates corresponding degree of membership size, obtains subordinated-degree matrix:
Wherein,
with
represent that electrokinetic cell remaining capacity SOC is to the membership values of three kinds of mode of operations;
with
represent that battery operating temperature is to the membership values of three kinds of mode of operations;
with
represent that demand power is to the membership values of three kinds of mode of operations.
Second step, carries out distribution to the weight of SOC, T and P and obtains A=(α
1, α
2, α
3), wherein α
1+ α
2+ α
3=1.
3rd step, the result of the comprehensive first step, second step, obtains three kinds of mode of operations ratio value separately, φ=AR=(μ
1, μ
2, μ
3), wherein μ
1+ μ
2+ μ
3=1.
Automatic switching module 19 is according to the result of calculation of signal processing module 18, and according to maximum subjection principle, namely Max (φ), gets the maximum in three, is just optimum mode of operation, and then control system automatically switches to corresponding mode of operation: work as μ
1time maximum, optimization model is pattern one, i.e. pure battery operated mode; Work as μ
2time maximum, optimization model is pattern two, i.e. diesel engine unit mode of operation; Work as μ
3time maximum, optimization model is pattern three, i.e. hybrid power supply pattern.
The mode signal obtained compares with present mode signal, and the closed and disconnected of Systematical control first change-over switch 4, second change-over switch 7 can complete the automatic switchover of energy mix system operating mode.
The present invention provides the automatic switching method of above-mentioned hybrid power boats and ships energy resource system mode of operation automatic switching control equipment simultaneously, comprises the following steps:
Step 1
Initialization: boats and ships normal/cruise, automatic switchover system carries out initialization, starts work;
Step 2
Current operation mode detects: signal detection module detects current vessel operation mode, records current vessel operation mode, to make to compare with the mode signal of automatic switching module;
Step 3
Battery parameter detects: detect battery parameter, obtain the current SOC value of battery according to corresponding calculation of parameter;
Step 4
Battery temperature detects: detect the work temperature that electrokinetic cell is real-time, as the important parameter calculating degree of membership R; Step 5
Power signal adds survey: detect propulsion electric machine and carriage clock signal, according to power and the carriage clock signal of real-time propulsion electric machine, calculate the value of demand power, as another important parameter calculating degree of membership R;
Step 6
Subordinated-degree matrix calculates: the parameter value that signal processing module received signal detection module sends, according to the membership between electrokinetic cell SOC, battery operating temperature T and demand power and three kinds of mode of operations, calculate corresponding subordinated-degree matrix R value.
Step 7
Trip current calculates: the weight A obtained according to the distribution of signal processing module to three characteristic quantity weights, and then by subordinated-degree matrix R and weight A, calculates hybrid power and go out vessel operation mode trip current φ=AR=(μ
1, μ
2, μ
3).
Step 8
Mode decision: automatic switching module, according to μ
1, μ
2, μ
3the size of three: if μ
1> μ
2and μ
1> μ
3time, then export as pattern one, i.e. electrokinetic cell powering mode; If μ
1≤ μ
2and μ
2> μ
3time, then export as pattern two, be diesel generator sets powering mode; If μ
1> μ
2and μ
1≤ μ
3or μ
1≤ μ
2and μ
2≤ μ
3time, then export as pattern three, i.e. hybrid power supply pattern.
Step 9
Mode signal compares: the mode signal result exported according to step 8, compares with the current vessel operation mode signal received.
Step 10
Consistency discrimination: judge conformability, if step 2 is consistent with the vessel operation mode signal of step 9, then returns and again detects, enter and circulate next time; If inconsistent, then sending mode signal.
Step 11
Pattern switches: automatic switching module 19 master cock handover module 15, is switched to corresponding mode of operation, thus gets back to beginning, enter and circulate next time.
Figure tri-is hybrid power boats and ships automatic switchover system operational flow diagram.During boats and ships normal/cruise, automatic switchover system, after initialization, after signal detection module 17 understands the mode of operation of the first current boats and ships of detection record, then detects the real-time SOC of battery parameter, battery operated real time temperature T, and the demand power signal of propulsion electric machine and carriage clock.Thus the parameter value that signal processing module 18 received signal detection module 17 sends, according to the membership between electrokinetic cell SOC, battery operating temperature T and demand power and three kinds of mode of operations, calculates corresponding subordinated-degree matrix R value.Weight A is obtained to the distribution that three characteristic quantities carry out weight simultaneously, and then by being subordinate to matrix R and weight A, calculating hybrid power and going out vessel operation mode trip current φ=AR=(μ
1, μ
2, μ
3).The result exported is sent to automatic switching module 19, according to μ
1, μ
2, μ
3the size of three: if μ
1> μ
2and μ
1> μ
3time, then export as pattern one, i.e. electrokinetic cell powering mode; If μ
1≤ μ
2and μ
2> μ
3time, then export as pattern two, be diesel generator sets powering mode; If μ
1> μ
2and μ
1≤ μ
3or μ
1≤ μ
2and μ
2≤ μ
3time, then export as pattern three, i.e. hybrid power supply pattern.The model results exported compares with the current vessel operation mode signal of acceptance.If step 2 is consistent with the vessel operation mode signal of step 9, then returns and again detect, enter and circulate next time.If inconsistent, then automatic switching module 19 master cock handover module 15, is switched to corresponding mode of operation, thus enters and circulate next time.
More than show and describe the groundwork of invention, principal character and advantage.The claimed scope of this patent is defined by appending claims and equivalent thereof.
Claims (6)
1. a hybrid power boats and ships energy resource system mode of operation automatic switching control equipment, comprises series connection type hybrid power system, energy resource system mode of operation automatic switchover system and power control module; Series connection type hybrid power system comprises diesel engine (1), synchronous dynamo (2), AC/DC current transformer (3), the first change-over switch (4), electrokinetic cell (5), DC/DC current transformer (6), the second change-over switch (7), DC master row (8), DC/AC current transformer (9), main motor (10), gear case (11) and screw propeller (12); Energy resource system mode of operation automatic switchover system comprises signal detection module (17), signal processing module (18), signal automatic switching module (19) and switching over module (15), is responsible for the judgement to mode of operation and automatic switchover; Switching over module (15) selects the closed and/or disconnection of the first change-over switch (4) and the second change-over switch (7); Power control module (14) completes the power division to the energy according to the result that mode of operation automatically switches; Diesel generator sets (13) is formed by being mechanically connected between diesel engine (1) and synchronous motor (2), by electrical connection AC/DC current transformer (3), the first change-over switch (4), again through DC master row (8), DC/AC current transformer (9), power supply is to main motor (10), main motor (10), by mechanical connection gear case (11) and screw propeller (12), controls the speed of a ship or plane of boats and ships; Electrokinetic cell (5) is by electrical connection DC/DC current transformer (6), change-over switch (7), again through DC master row (8), DC/AC current transformer (9), power supply is to main motor (10), main motor (10), by mechanical connection gear case (11) and screw propeller (12), controls the speed of a ship or plane of boats and ships; It is characterized in that:
Signal detection module (17) connects diesel generator sets (13), carriage clock signal (16), electrokinetic cell (5) and main motor (10) by signal, detected parameters electrokinetic cell SOC, temperature T and demand power, and then signal is sent to signal processing module (18), automatic switching module (19), completes the switching of switch; Another signal of synchronous signal automatic switching module (19) is sent to power control module (14); Power control module (14) is again according to the signal from electrokinetic cell (5) and main motor (10), finally transmit control signal and control the power stage of diesel powerplant (13) and the break-make of two-way DC/DC current transformer (6), complete the power division work to hybrid power energy resource system.
2. hybrid power boats and ships energy resource system mode of operation automatic switching control equipment as claimed in claim 1, is characterized in that,
The mode of operation of hybrid power boats and ships comprises three: electrokinetic cell mode of operation
diesel engine unit mode of operation
blend modes of operation
mode of operation
characteristic quantity M=(SOC, T, P); Signal processing module (18) is according to SOC, T, the Comprehensive Evaluation of P tri-characteristic quantities, mode of operation is determined in intellectuality, set up judge relation: φ=AM, wherein A is that electrokinetic cell dump energy, battery operating temperature and propulsion electric machine demand power combine the weight of the impact of vessel operation mode; Obtain φ according to judge relational expression, according to maxim degree of membership principle, get Max (φ) for pattern switching foundation.
3. hybrid power boats and ships energy resource system mode of operation automatic switching control equipment as claimed in claim 2, is characterized in that,
When boats and ships supply separately electric propulsion by electrokinetic cell, signal detection module (17) detects the parameter SOC of electrokinetic cell (5), the demand power of main motor (10) and carriage clock signal; When the SOC of electrokinetic cell (5) is not enough or demand power is comparatively large thus electrokinetic cell (5) is not enough to bear separately power supply time, signal processing module (18) determines the ratio shared by each mode of operation, according to maximum subjection principle, signal automatic switching module (19) master cock handover module (15), closes the first change-over switch (4); Simultaneously power control module (14) power according to demand distributes the watt level that diesel powerplant (13) and electrokinetic cell (5) provide, thus hybrid power boats and ships complete by the switching of electrokinetic cell powering mode to hybrid power supply pattern.
4. hybrid power boats and ships energy resource system mode of operation automatic switching control equipment as claimed in claim 2, is characterized in that,
When electrokinetic cell is lower than margin of safety, signal processing module (18) determines mode of operation proportion, by signal automatic switching module (19) master cock handover module (15), open the first change-over switch (4), close the second change-over switch (7); Power control module (14) power according to demand, determine the magnitude of power of diesel powerplant (13), now boats and ships power demand is all born by diesel powerplant (13), thus hybrid power boats and ships are switched to diesel generator sets mode of operation.
5. hybrid power boats and ships energy resource system mode of operation automatic switching control equipment as claimed in claim 2, it is characterized in that, signal processing module (18) treating process is divided into three steps; The first step, according to the electrokinetic cell remaining capacity SOC of detection module output, the value of battery operating temperature T and boats and ships demand power P, calculates corresponding degree of membership size, obtains subordinated-degree matrix:
Wherein,
with
represent that electrokinetic cell remaining capacity SOC is to the membership values of three kinds of mode of operations;
with
represent that battery operating temperature is to the membership values of three kinds of mode of operations;
with
represent that demand power is to the membership values of three kinds of mode of operations;
Second step, carries out distribution to the weight of SOC, T and P and obtains A=(α
1, α
2, α
3), wherein α
1+ α
2+ α
3=1;
3rd step, the result of the comprehensive first step, second step, obtains three kinds of mode of operations ratio value separately, φ=AR=(μ
1, μ
2, μ
3), wherein μ
1+ μ
2+ μ
3=1;
Automatic switching module (19) is according to the result of calculation of signal processing module (18), according to maximum subjection principle, namely Max (φ), gets the maximum in three, just be optimum mode of operation, and then control system automatically switch to corresponding mode of operation: work as μ
1time maximum, optimization model is pattern one, i.e. pure battery operated mode; Work as μ
2time maximum, optimization model is pattern two, i.e. diesel engine unit mode of operation; Work as μ
3time maximum, optimization model is pattern three, i.e. hybrid power supply pattern;
The mode signal obtained compares with present mode signal, and the closed and disconnected of Systematical control first change-over switch (4), the second change-over switch (7) completes the automatic switchover of energy mix system operating mode.
6. a hybrid power boats and ships energy resource system mode of operation automatic switching method, is used in the hybrid power boats and ships energy resource system mode of operation automatic switching control equipment as described in claim as arbitrary in claim 1-5, it is characterized in that comprising the following steps:
Step 1, initialization: boats and ships normal/cruise, automatic switchover system carries out initialization, starts work;
Step 2, current operation mode detect: signal detection module detects current vessel operation mode, records current vessel operation mode, to make to compare with the mode signal of automatic switching module;
Step 3, battery parameter detect: detect battery parameter, obtain the current SOC value of battery according to corresponding calculation of parameter;
Step 4, battery temperature detect: detect the work temperature that electrokinetic cell is real-time, as the important parameter calculating degree of membership R;
Step 5, power signal add survey: detect propulsion electric machine and carriage clock signal, according to power and the carriage clock signal of real-time propulsion electric machine, calculate the value of demand power, as another important parameter calculating degree of membership R;
Step 6, subordinated-degree matrix calculate: the parameter value that signal processing module received signal detection module sends, according to the membership between electrokinetic cell SOC, battery operating temperature T and demand power and three kinds of mode of operations, calculate corresponding subordinated-degree matrix R value;
Step 7, trip current calculate: the weight A obtained according to the distribution of signal processing module to three characteristic quantity weights, and then by subordinated-degree matrix R and weight A, calculate hybrid power and go out vessel operation mode trip current φ=AR=(μ
1, μ
2, μ
3);
Step 8, mode decision: automatic switching module, according to μ
1, μ
2, μ
3the size of three: if μ
1> μ
2and μ
1> μ
3time, then export as pattern one, i.e. electrokinetic cell powering mode; If μ
1≤ μ
2and μ
2> μ
3time, then export as pattern two, be diesel generator sets powering mode; If μ
1> μ
2and μ
1≤ μ
3or μ
1≤ μ
2and μ
2≤ μ
3time, then export as pattern three, i.e. hybrid power supply pattern;
Step 9, mode signal compare: the mode signal result exported according to step 8, compare with the current vessel operation mode signal accepted;
Step 10, consistency discrimination: judge conformability, if step 2 is consistent with the vessel operation mode signal of step 9, then returns and again detect, enter and circulate next time; If inconsistent, then sending mode signal;
Step 11, pattern switch: automatic switching module (19) master cock handover module (15), is switched to corresponding mode of operation, thus gets back to beginning, enter and circulate next time.
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