CN103270662B - Power supply device, crane, and power supply method - Google Patents
Power supply device, crane, and power supply method Download PDFInfo
- Publication number
- CN103270662B CN103270662B CN201180062683.8A CN201180062683A CN103270662B CN 103270662 B CN103270662 B CN 103270662B CN 201180062683 A CN201180062683 A CN 201180062683A CN 103270662 B CN103270662 B CN 103270662B
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- Prior art keywords
- power
- electrical load
- crane
- power supply
- electric power
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
- B66C13/23—Circuits for controlling the lowering of the load
- B66C13/26—Circuits for controlling the lowering of the load by ac motors
- B66C13/28—Circuits for controlling the lowering of the load by ac motors utilising regenerative braking for controlling descent of heavy loads and having means for preventing rotation of motor in the hoisting direction when load is released
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/007—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries for containers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J4/00—Circuit arrangements for mains or distribution networks not specified as ac or dc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
For the purpose of supplying power to the power load of a crane, a power supply device (40) is provided with a chargeable battery (42) which is mounted on the crane and which supplies direct current power to the power load by being connected to the power load via a direct current bus line (52). The power supply device (40) converts, by means of a PWM converter (41), an alternating current power supplied from a commercial power source into a direct current power that has a first voltage target value as the voltage and has a maximum power target value as an upper limit, supplies the direct current power to the power load via the direct current bus line (52), and charges and discharges the battery (42) at a voltage of a second voltage target value that is smaller than the first voltage target value by means of a battery charge/discharge control device (48).
Description
Technical field
The present invention relates to the power supply device, crane and power supply method to vehicle supply electric power.
Background technology
In recent years, the car for loading electrical storage device, being loaded come driving electric by the electric power supplied from electrical storage device in exploitation
.As the example of such vehicle, the crane that can be listed below (crane).
In the Container Yard at harbour etc., the container before many loadings to ship and the packaging unloaded from ship are laid
Case.These containers are set as having piled up multiple stacked containers upward, and each stacked containers are arranged according to the rules and arranged
In being listed in each passage (lane).In each passage, RTG (Rubber Tired Gantry crane are configured；Tyre-type gantry
Crane) etc. self-propelled gantry, with crossing channel.By this gantry, carry out being travelled with passage
Trailer and AGV (Automatic Guided Vehicle；Automatic guided vehicle) container give and accept, additionally, enter row of channels
Setting of interior container etc..
The crane of such RTG etc., was generated electricity, to crane by the oil-electric engine being loaded on crane in the past
Running motor and handling motor supply electric power.Additionally, from for the requirement of reduction environmental loads in recent years, except internal combustion engine is sent out
Outside motor, the AC-battery power source mode for being loaded with battery is constantly practical.And, as the mode of propulsion environment load reduction,
There is discarded oil-electric engine, the power supply arranged from ground is electric to crane supply via service cable and cable drum
The coil of cable cartridge type surface power supply mode of power.
In patent documentation 1, the crane for recording by the power supply from source power supply and electrical storage device to drive.
Crane described in patent documentation 1, in the case where the charge capacity of electrical storage device is more than the 1st threshold value, in high electricity
Intermediate pressure section and low-voltage region all with electrical storage device monomeric fashion motor, in the charge capacity of electrical storage device the 1st threshold value are less than
In the case of, by simultaneously using the electric power from electrical storage device and the electric power from source power supply come motor, in electric power storage
The charge capacity of device only drives electricity less than in the case of the 2nd threshold value lower than the 1st threshold value by the electric power from source power supply
Machine.
Prior art literature
Patent documentation
Patent documentation 1：JP 2007-166775 publication
The content of the invention
Problems to be solved by the invention
Here, the crane of RTG etc., the electric power that hanging the raising of thing needs for example needs 150kW (anti-overload amounts 180%
When maximum 270kW) electric power, dolly (trolley) row traveling need electric power for example need 22kW (anti-overload amounts
Maximum 44kW when 200%) electric power, other basic loads be that the electric power that needs for example needs relative 35kW or so under maximum case
Load electric power, so needing the electric power of total maximum 350kW or so.
On the other hand, will hang in the case that thing falls, crane carries out the action of electromotor, to source power supply regeneration electricity
Power.
Then, if the consumption and generating of the electric power that crane is produced are carried out averagely, for tens of kW or so, so also having
Because of crane, load change becomes big situation.
But, the crane described in patent documentation 1, due to the electricity that can not be supplied by electrical storage device from source power supply supply
Power, so the electric power from source power supply supply changes according to occasion, in the case where RTG is suitable for, is assumed to be high-voltage power
(for example, AC6600V), it is necessary to constitute for from power-supply device of the power supply of source power supply etc..And, in the electric power of crane
In the case of changing greatly, in addition it is also necessary to excessive power-supply device.
The present invention in view of such situation and complete, it is therefore intended that offer make electric power from from source power supply to vehicle supply into
For low electric power and can low-voltage transmission of electricity power supply device, crane and power supply method.
Solution to problem
In order to solve above-mentioned problem, the power supply device of the present invention, crane and power supply method are using following
Mode.
The power supply device of the 1st form of the present invention, loads for the electrical load supply electric power having to vehicle
On the vehicle, the power supply device includes：Converter unit, the alternating electromotive force supplied from source power supply is transformed to as
The voltage of 1 desired value and the direct current power with predetermined power value as the upper limit, and the power load is supplied to by wire
Carry；Can discharge and recharge electrical storage device, be connected with the electrical load by the wire, for straight to electrical load supply
Stream electric power；And charge-discharge control unit, the electrical storage device is made with less than the voltage of the 2nd desired value of the 1st desired value
Carry out discharge and recharge.
According to the structure, power supply device is loaded in the vehicle for the electrical load supply electric power having to vehicle
On.Further, vehicle is, for example, crane or vehicular traffic.
And, by converter unit, the voltage for being set to the 1st desired value is transformed to simultaneously from the alternating electromotive force of source power supply supply
And the direct current power with predetermined power value as the upper limit, and electrical load is supplied to by wire.
And, by charge-discharge control unit, it is connected with electrical load via wire, for supplying direct current to electrical load
Electric power can the electrical storage device of discharge and recharge discharge and recharge is carried out with the voltage of the 2nd desired value less than the 1st desired value.
Thus, in the situation that the electric power (consumption electric power) consumed by electrical load is below above-mentioned predetermined power value
Under, because the 1st desired value is more than the 2nd desired value, so being higher than to supply from electrical storage device from the voltage of the electric power of converter unit supply
The voltage of the electric power given.Therefore, electrical load is only by the direct current power that supplies from converter unit, i.e. from the electricity of source power supply
Power is driving.
With the increase of the consumption electric power of electrical load, increase from the electric power of converter unit supply, and if consumption electric power
More than above-mentioned predetermined power value, then decline to the voltage on the wire of electrical load supply electric power.If the electricity on wire
Pressure drop as little as the 2nd desired value, then start the electric discharge of electrical storage device by charge-discharge control unit.Then, electrical load is by with pre-
The power value for first determining drives for the upper limit from the electric power of converter unit supply and from the electric power of electrical storage device supply.
Therefore, make from source power supply to the electric power of vehicle supply to become low electric power and be capable of achieving low-voltage to transmit electricity.
Additionally, in above-mentioned 1st form, preferably needing to charge in the electrical storage device, and disappeared by the electrical load
Less than in the case of the predetermined power value, the charge-discharge control unit is utilized by the converter unit electric power of consumption
The direct current power of conversion, makes the electrical storage device charge.
According to said structure, among the direct current power converted by converter unit, due to what is do not consumed by electrical load
Remaining electric power is used for the charging of electrical storage device, so can expeditiously be charged from source power supply to electrical storage device.
Additionally, in above-mentioned 1st form, the preferred electrical load can enter to be about to kinetic energy and be transformed to electric energy and reclaim again
It is raw, need to charge in the electrical storage device, and the electrical load is regenerated, and is produced by the regeneration of the electrical load
The voltage of electric power be it is more than 2nd desired value in the case of, the electric power that the charge-discharge control unit is produced using the regeneration,
The electrical storage device is set to charge.
According to said structure, can be by easy structure, by the power charge produced by the regeneration of electrical load to storage
Electric installation.
The present invention the 2nd form crane, including above-mentioned record power supply device and by from the electric power
The electric power of feedway supply is come the electrical load that drives.
The power supply method of the 3rd form of the present invention is used for power supply device, and the power supply device is in order to car
The electrical load supply electric power having and be loaded on the vehicle, the method includes：1st step, will supply from source power supply
Alternating electromotive force be transformed to the voltage as the 1st desired value and the direct current power with predetermined power value as the upper limit, and lead to
Cross wire and be supplied to the electrical load；And second step, make to be connected with the electrical load by the wire, for right
Electrical load supply direct current power can discharge and recharge electrical storage device with less than the 2nd desired value of the 1st desired value
Voltage carries out discharge and recharge.
The effect of invention
According to the present invention, with making from source power supply to the electric power of vehicle supply to become low electric power and be capable of achieving low-voltage defeated
The good result of electricity.
Description of the drawings
Fig. 1 is the axonometric chart of the crane for representing embodiments of the present invention.
Fig. 2 is the skeleton diagram of the electrical structure of the crane of embodiments of the present invention.
Fig. 3 is the song of the time change for representing the electric power that the electrical load by crane of embodiments of the present invention is consumed
Line chart.
Fig. 4 be represent embodiments of the present invention only by the direct current power that supplies from pwm converter come driving electric
The schematic diagram of the situation of load.
Fig. 5 be represent embodiments of the present invention with the electric power that supplies from pwm converter and the electric power from battery supply
Carry out the schematic diagram of the situation of driving electric load.
Fig. 6 is to represent embodiments of the present invention battery charges by the direct current power converted by pwm converter
Situation schematic diagram.
Fig. 7 is to represent becoming by the regenerated electric power that produces from electrical load and pwm converter for embodiments of the present invention
The direct current power that changes and the schematic diagram of situation that battery charges.
Label declaration
1 crane
40 power supply devices
41 pwm converters
42 batteries
43 loads drive inverter
48 battery charging and discharging control devices
49 motors
50 subsidiary engines
52 dc bus
Specific embodiment
Hereinafter, with reference to the accompanying drawings of the present invention power supply device, crane, the power supply method of crane one
Embodiment.
Fig. 1 represents the crane 1 of present embodiment.
In FIG, the crane 1 arranged in travel direction X of passage R is represented.Crane 1 is set to by from ground
The electric power of distribution box 31 (power supply unit) supply of setting carries out the electric crane of the surface power supply mode of action, not including interior
Fuel engine power generation machine.Additionally, crane 1 includes crane service cable roll device (hereinafter simply referred to as ' coil of cable wound packages
Put ') 2.
Crane 1 is set to so-called RTG ((Rubber Tired Gantry crane；Tire type gantry crane), if
It is the crane by the planer-type voluntarily of multiple wheels (rubber tyre) 3.Crane 1 is up stacked multiple collection to cross over
The stacking of vanning (hereinafter referred to as ' hanging thing ') hangs the mode of the thing passage R of spread configuration according to the rules configuring, passage R's
Travel on longitudinal direction (travel direction X).
Crane 1 includes four mobile devices 5 in each leg 11, and four wheels 3 are provided with each mobile devices 5.OK
Sail device 5 and its driving is controlled by travel controlling system 7.In mobile devices 5, auto-steering sensor 6 is provided with.This is automatic
The detection of rotation direction sensor 6 carrys out the magnetic of the magnetic graticule 15 laid on the longitudinal direction of comfortable passage R, thus, makes crane 1 be expert at
Sailing can automatic linear operating on the X of direction.
Adjacent mobile devices 5 in travel direction X of left and right directions, are linked by underbeam 9, are set on the sill 9
It is equipped with travel controlling system 7.Here, left and right refers to the travel direction of crane 1, refers to that the moving direction of dolly 20 is (horizontal in front and back
Line direction Y).This is that the attitude of the driver in the driver's cabin 22 that will be arranged on dolly 20 determines as benchmark.
In the central authorities of sill 9, the pitch sensors 8 (bay sensor) of lower state are provided with.The spacing sensing
Device 8 detects the magnetic of the Magnet 16 from each the spacing laying to the unit as the left and right directions for hanging thing for arranging, thus,
Crane 1 can be made to stop in the spacing of target.
At the two ends of sill 9, post 10 upright upward is respectively equipped with.The upper end of each post 10 by crossbeam 12 with from another
The upper end of the upright post 10 of the sill 9 of one side links.
Crossbeam 12 is arranged side by side in the lateral direction two, fore-and-aft direction (the row direction on these crossbeams 12 of dolly 20
Y it is) mobile.Driver's cabin 22 is provided with dolly 20, driver awaits orders in the driver's cabin 22, and carries out the operation of crane 1.
It is suspended from the dilator of dolly 20 (crane gear) 24, by the dilator 24, hangs thing in the state of by holding
It is suspended.Specifically, in the corner of dilator 24, front end has the twist lock span (not shown) of enlarged head to project downwards
State arrange, the enlarged head of each twist lock span is in the state of the hole that the upper surface corner of hanging thing is arranged is inserted into by rotating
And engage.Then, suspended in midair by dilator 24, hang thing and be moved to each position with moving for dolly 20.
Service cable 33 is set as the low-voltage specification of AC460V, so the high voltage specification with conventional AC6600V levels
Service cable be in a ratio of minor diameter.Accompany with this, cable drum 35 and conventional cable drum are in a ratio of minor diameter and small-sized
Change.Then, the cable drum 35 of miniaturization is set, and is stretched out with the travel direction X side in crane 1.
The cable drum device 2 of cable drum 35 is included, it is dismantled and assembled for crane 1.Additionally, as shown in figure 1, for
One crane 1, it is also possible to arrange multiple.And, the position of cable drum device 2 according to the position of distribution box 31, can be changed.
Fig. 2 is the skeleton diagram of the electrical structure of the crane 1 of present embodiment.
Crane 1 includes above-mentioned power supply device 40, used as the power supply to electrical load supply electric power (power supply)
Device, the power supply device includes：Receive the supply of predetermined electric power from source power supply, to electrical load supply electric power
Pwm converter 41；And can discharge and recharge, for the battery 42 (electrical storage device) to electrical load supply electric power.
Distribution box 31 receives electricity by high powered disk 44 from source power supply, and powered alternating electromotive force is become by transformator 45
The alternating electromotive force (for example, 6600V being transformed to into 460V) of the size of regulation is changed to, and is powered to power supply device 40.
Power supply device 40 is supplied to alternating electromotive force (power supply) from distribution box 31, will be by pwm converter 41 from alternating current
The direct current power of force transformation, the load driving inverter for being connected to electrical load is supplied to via the dc bus 52 as wire
43A～43F.Additionally, battery 42 is supplied to direct current power via dc bus 52 by electric discharge in the same manner as pwm converter 41
The load for being connected to electrical load drives inverter 43A～43F.
Further, pwm converter 41 is connected to the power supply that distribution box 31 is connected via power supply base 46 and cable drum 47
Cable 33.
And, pwm converter 41 is transformed to the alternating electromotive force supplied from distribution box 31 to be set to the 1st desired value (below, title
For ' the 1st voltage-target ') voltage and with predetermined power value (hereinafter referred to as ' maximum power desired value ') as upper
The direct current power of limit, via dc bus 52 electrical load is supplied to.Pwm converter 41 has current limit function, will export
Electric power keep fix, by the higher limit for presetting electric current, the electric power that pwm converter 41 is exported is limited in into maximum power
Below desired value.
Further, pwm converter 41 is all limited in electric power below maximum power desired value when power runs and when regenerating.
Additionally, the higher limit of electric current, such as be set to the current value being allowed in dc bus 52.And, pwm converter 41 is configured to
By current limit function not earthward supply side regeneration during regeneration.
The battery charging and discharging control device 48 that power supply device 40 includes makes battery 42 with the 2nd less than the 1st desired value
The voltage of desired value (hereinafter referred to as ' the 2nd voltage-target ') carrys out discharge and recharge.
Electrical load be the row of the row of dolly 20 for including crane 1 motor 49A, make wheel 3 rotate electricity
Machine 49B～49E and motor the 49F of rotation, raising motor 49G and subsidiary engine 50 etc. for playing hanging thing.Further, rising
Liter motor 49G can enter to be about to kinetic energy be transformed to electric energy and reclaim regeneration, reduce raising hang thing in the case of, by make
Generate electricity for the function of electromotor.
In the following description, in the case where each motor 49 is distinguished, one of them of additional A～G at the end of label,
In the case of not distinguishing each motor 49, A～G is omitted.Additionally, in the case where each load driving inverter is distinguished, in label
The additional A～F in end one of them, do not distinguish it is each load drive inverter 43 in the case of, omit A～F.
And, in each motor 49 and subsidiary engine 50, as described above, by each corresponding load driving inverter 43
Alternating electromotive force will be transformed to from the direct current power of power supply device 40, and they are powered.
And, the electric power not consumed by electrical load is consumed by resistor 51.
Fig. 3 is the curve chart of the time change for representing the electric power consumed by electrical load.
In Fig. 3, transverse axis is set to time change, and the longitudinal axis is set to electric power, represent the consumption electric power that consumed by electrical load when
Between change.Further, electric power is positive situation, and it is the situation of electrical load consumption electric power, on the other hand, electric power is negative situation,
It is that crane 1 carries out hanging the situation about falling of thing, is the situation for making raising motor 49G produce electric power.
And, straight line A represents the meansigma methodss of consumption electric power, in the present embodiment, pwm converter 41 is supplied to into electric power
The maximum power desired value of the electric power of load is set to above-mentioned meansigma methodss (such as 45kW) as one.
The effect of the power supply device 40 of present embodiment is illustrated below.Further, in the present embodiment, as one
Example, by the 1st voltage-target 660V is set to, and maximum power desired value is set to into 45kW, and the 2nd voltage-target is set to into 651V.
Thus, as described below, pwm converter 41 and battery charging and discharging control device 48 enter to be about to dc bus 52 independently of one another
Voltage be controlled to fixed voltage control.
First, in the case of being full of electricity condition, electrical load (load drives inverter 43) consumption electric power in battery 42,
If declining as the voltage (hereinafter referred to as ' DC bus-bar voltage ') in the dc bus 52 to electrical load supply electric power,
1st voltage-target (660V) of pwm converter 41 is more than the 2nd voltage-target (651V), so as shown in figure 4, only passing through
Direct current power from the supply of pwm converter 41, the electric power i.e. from source power supply carry out driving electric load.In this case, directly
The voltage (virtual voltage) of stream bus 52 is fixed with 660V.Additionally, battery charging and discharging control device 48 is set as operating stops shape
State.
Then, it is below maximum power desired value in the electric power (hereinafter referred to as ' consumption electric power ') consumed by electrical load
In the case of, by the direct current power only from the supply of pwm converter 41 come driving electric load.
Then, with electrical load consumption electric power increase, from pwm converter 41 supply electric power increase, and if
Consumption electric power exceedes maximum power desired value (45kW), then DC bus-bar voltage declines.If it is electric that DC bus-bar voltage drops to the 2nd
Pressure desired value (651V), then as shown in figure 5, battery charging and discharging control device 48 becomes operating condition (control of discharge), start electricity
The electric discharge (battery auxiliary) in pond 42.
Then, electrical load is using the electric power that supplies maximum power desired value as the pwm converter 41 of the upper limit and battery
The electric power of 42 supplies are driving.In this case, the voltage (virtual voltage) of dc bus 52 is fixed with 651V.
Therefore, the power supply device 40 of present embodiment makes the electric power supplied from source power supply to crane 1 become low
Electric power is simultaneously capable of achieving low-voltage transmission of electricity.
On the other hand, DC bus-bar voltage higher than battery charging and discharging control device 48 the 2nd voltage-target situation
Under, DC bus-bar voltage produces the effect that battery 42 charges.Therefore, in the case where the consumption electric power of electrical load is low,
In the range of the maximum power desired value of pwm converter 41, the remaining power charge not consumed by electrical load can be existed
In battery.That is, the electric power for being consumed by electrical load and the difference of maximum power desired value become the electric power being electrically charged in battery 42.
Therefore, need to charge in battery 42, and the consumption electric power of electrical load is less than the situation of maximum power desired value
Under, battery charging and discharging control device 48 becomes the operating condition (charge control) shown in Fig. 6, by being converted by pwm converter 41
Gained direct current power and make battery 42 charge.In this case, the voltage (virtual voltage) of dc bus 52 is fixed with 651V.
(hereinafter referred to as ' electricity is regenerated additionally, also having and producing electric power by regeneration from electrical load (raising motor 49G etc.)
Power ') situation.
Therefore, need to charge in battery 42, and in the case that electrical load produces regeneration, battery charging and discharging control device
48 are illustrated in figure 7 operating condition (charge control), convert by the regenerated electric power from electrical load and by pwm converter 41
Gained direct current power and make battery 42 charge.That is, load drives inverter 43 that regenerated electric power is flowed to into dc bus 52, to reach
To more than the 2nd voltage-target (651V).In this case, the voltage (virtual voltage) of dc bus 52 is fixed with 651V.
Additionally, in this case, as one, pwm converter 41 with maximum power desired value to the supply electric power of battery 42,
But the electric power can also be made to be less than maximum power desired value.
As described above, the power supply device 40 of present embodiment is for the electrical load supply having to crane 1
Electric power and be loaded in crane 1, including being connected with electrical load via dc bus 52, for supplying direct current to electrical load
Electric power can discharge and recharge battery 42.And, power supply device 40 becomes the alternating electromotive force supplied from source power supply by PWM
Parallel operation 41, is transformed to the voltage as the 1st voltage-target and the direct current power with maximum power desired value as the upper limit, via straight
Stream bus 52 is supplied to electrical load, by battery charging and discharging control device 48, makes battery 42 with less than the 1st voltage-target
The voltage of the 2nd voltage-target carries out discharge and recharge.
Therefore, the power supply device 40 of present embodiment, makes the electric power supplied from source power supply to crane 1 become low
Electric power is simultaneously capable of achieving low-voltage transmission of electricity.
Additionally, the power supply device 40 of present embodiment, makes battery charging and discharging control device 48 with voltage control mode
Action, so driving without delay in the control response of inverter 43 in load, the electric power that can be needed electrical load is from battery 42
Electric discharge, and the regenerated electric power produced from electrical load can be charged to battery 42.That is, the electric power of battery charging and discharging control device 48
The speed of control response is fast.
Additionally, power supply device 40 is not for example to make battery 42 carry out discharge and recharge according to some power command values, and
It is that the difference of the electric power and maximum power desired value consumed by electrical load is directly becoming electric power from the discharge and recharge of battery 42, so can
Directly to control the electric power of the discharge and recharge of battery 42.
Additionally, load drives inverter 43 not export power command value of electric power that expression electrical load needs etc., independently
Carry out Electric control, it is possible to make the charge and discharge control logic (logic) to battery 42 be easy structure.
Additionally, depart from surface power supply (disconnecting with distribution box 31) in crane 1, battery-powered row of channels conversion of going forward side by side
In the case of, battery charging and discharging control device 48 only continues voltage control just can be with, it is not necessary to special control.Additionally, in passage
Conversion is completed, and in the case that crane 1 reverts to surface power supply state, similarly battery charging and discharging control device 48 only continues electricity
Voltage-controlled system just can be with.
Additionally, in the case where surface power supply moment stops, it is not required that special control, battery charging and discharging control device
48 can make battery 42 discharge, and make the action of crane 1.
And, the power supply device 40 of present embodiment needs to charge in battery 42, and consumed by electrical load
Less than in the case of maximum power desired value, the direct current power as obtained by being converted by pwm converter 41 fills battery 42 to electric power
Electricity, so efficient charging can be carried out to battery 42 from source power supply.
Additionally, the power supply device 40 of present embodiment, needs to charge in battery 42, and electrical load is produced again
It is raw, the voltage of the regenerated electric power of electrical load be it is more than 2nd voltage-target in the case of, fill battery 42 by regenerated electric power
Electricity, it is possible to by easy structure, the regenerated electric power of electrical load is charged in battery 42.
More than, the present invention is illustrated using the respective embodiments described above, but the technical scope of the present invention is not limited to above-mentioned reality
Apply the scope described in mode.The respective embodiments described above can be carried out various without departing from the scope of spirit of the present invention
Change or improvement, carried out the change or improved form be also contained in the technical scope of the present invention.
For example, in the respective embodiments described above, illustrate to supply power to form of the device 40 suitable for crane 1, but
The invention is not restricted to this, or supply power to form of the device 40 suitable for other vehicles of vehicular traffic etc..
Claims (4)
1. a kind of crane, including：Electrical load；And to the electrical load supply electric power driving the electricity of the electrical load
Power feedway, the crane also includes：
Converter unit, the alternating electromotive force supplied from source power supply is transformed to as the 1st desired value voltage and with predefine
Power value be the direct current power of the upper limit, and the electrical load is supplied to by wire；
Can discharge and recharge electrical storage device, be connected with the electrical load by the wire, for the electrical load supply
Direct current power；And
Charge-discharge control unit, making the electrical storage device with the voltage of the 2nd desired value less than the 1st desired value carries out charge and discharge
Electricity.
2. crane as claimed in claim 1,
Need to charge in the electrical storage device, and the predetermined electric power is less than by the electric power that the electrical load is consumed
In the case of value, the charge-discharge control unit makes the electrical storage device using the direct current power converted by the converter unit
Charge.
3. crane as claimed in claim 1,
In the electrical load, enter to be about to kinetic energy and be transformed to electric energy and the regeneration reclaimed,
Need to charge in the electrical storage device, and the voltage of the electric power produced by the regeneration of the electrical load is the described 2nd
In the case of more than desired value, the electric power that the charge-discharge control unit is produced using the regeneration makes the electrical storage device charge.
4. a kind of power supply method of crane, the crane includes：Electrical load；And to the electrical load supply electric power
To drive the power supply device of the electrical load, in the power supply method,
The power supply device includes：Can discharge and recharge electrical storage device, be connected with the electrical load by wire, for right
The electrical load supplies direct current power,
The power supply method includes：
The alternating electromotive force supplied from source power supply is transformed to 1st step, the power supply device electricity as the 1st desired value
Pressure and the direct current power with predetermined power value as the upper limit, and the electrical load is supplied to by the wire；And
Second step, it is described can the electrical storage device of discharge and recharge filled with the voltage of the 2nd desired value less than the 1st desired value
Electric discharge.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011145817A JP6189010B2 (en) | 2011-06-30 | 2011-06-30 | Crane and power supply method for crane |
| JP2011-145817 | 2011-06-30 | ||
| PCT/JP2011/077460 WO2013001674A1 (en) | 2011-06-30 | 2011-11-29 | Power supply device, crane, and power supply method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103270662A CN103270662A (en) | 2013-08-28 |
| CN103270662B true CN103270662B (en) | 2017-05-03 |
Family
ID=47423609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180062683.8A Active CN103270662B (en) | 2011-06-30 | 2011-11-29 | Power supply device, crane, and power supply method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6189010B2 (en) |
| CN (1) | CN103270662B (en) |
| WO (1) | WO2013001674A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6763233B2 (en) * | 2016-08-17 | 2020-09-30 | 富士電機株式会社 | Controls, crane drives, cranes, programs and control methods |
| CN107453345A (en) * | 2017-08-30 | 2017-12-08 | 杰华特微电子（杭州）有限公司 | Power supply circuit and method of supplying power to |
| FR3120619B1 (en) * | 2021-03-10 | 2023-12-01 | Manitowoc Crane Group France | Method for distributing electrical power to crane equipment |
| FR3120618B1 (en) * | 2021-03-10 | 2023-11-03 | Manitowoc Crane Group France | Method for managing the electrical power of a crane from a primary source and a rechargeable secondary source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203400A (en) * | 2005-04-04 | 2008-06-18 | 丰田自动车株式会社 | Power supply system provided with a plurality of power supplies, and vehicle provided with such power supply system |
| CN101224710A (en) * | 2008-02-01 | 2008-07-23 | 深圳先进技术研究院 | Mixing power system for dock tractor and drive control method |
| CN101980946A (en) * | 2008-03-31 | 2011-02-23 | 三井造船株式会社 | Crane system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09295793A (en) * | 1996-05-07 | 1997-11-18 | Mitsubishi Heavy Ind Ltd | Motor driven type cargo handling device |
| JPH11285165A (en) * | 1998-03-26 | 1999-10-15 | Sumitomo Heavy Ind Ltd | Power equipment for crane |
| JP2009148073A (en) * | 2007-12-14 | 2009-07-02 | Mazda Motor Corp | Method and device for charging battery |
| JP2010115009A (en) * | 2008-11-06 | 2010-05-20 | Kawasaki Heavy Ind Ltd | Port microgrid |
| JP5414397B2 (en) * | 2009-07-10 | 2014-02-12 | ユニキャリア株式会社 | Feeding type cargo handling equipment |
| JP2011068499A (en) * | 2010-11-30 | 2011-04-07 | Mitsui Eng & Shipbuild Co Ltd | Crane device |
-
2011
- 2011-06-30 JP JP2011145817A patent/JP6189010B2/en active Active
- 2011-11-29 CN CN201180062683.8A patent/CN103270662B/en active Active
- 2011-11-29 WO PCT/JP2011/077460 patent/WO2013001674A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101203400A (en) * | 2005-04-04 | 2008-06-18 | 丰田自动车株式会社 | Power supply system provided with a plurality of power supplies, and vehicle provided with such power supply system |
| CN101224710A (en) * | 2008-02-01 | 2008-07-23 | 深圳先进技术研究院 | Mixing power system for dock tractor and drive control method |
| CN101980946A (en) * | 2008-03-31 | 2011-02-23 | 三井造船株式会社 | Crane system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013010629A (en) | 2013-01-17 |
| WO2013001674A1 (en) | 2013-01-03 |
| JP6189010B2 (en) | 2017-08-30 |
| CN103270662A (en) | 2013-08-28 |
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Effective date of registration: 20161011 Address after: Tokyo, Japan, Japan Applicant after: SUMITOMO HEAVY INDUSTRIES MATERIAL HANDLING SYSTEMS CO., LTD. Address before: Hiroshima County Applicant before: Mitsubishi Heavy Ind Ltd |
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