CN103600823A - Energy-storage demagnetizing module, demagnetizing power supply and charge and discharge control method - Google Patents
Energy-storage demagnetizing module, demagnetizing power supply and charge and discharge control method Download PDFInfo
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Abstract
本发明公开了一种储能型消磁模块、消磁电源及充放电控制方法，消磁模块由充电控制单元、储能单元、后级恒流变换单元、电流换向单元、监控单元构成。消磁电源由多个消磁模块并联构成，多个储能型消磁模块共用一个监控单元。系统先给储能单元充电到额定电压，监控单元控制后级恒流变换单元对负载进行恒流脉冲放电，电流换向单元对电流正反向进行控制，控制系统根据上一个脉冲放电后储能单元中的剩余能量及后续脉冲能量总和进行充电控制，保持储能系统中有合适的剩余能量与电压，直到所有脉冲放电完成。
The invention discloses an energy storage type degaussing module, a degaussing power supply and a charging and discharging control method. The degaussing module is composed of a charging control unit, an energy storage unit, a rear stage constant current conversion unit, a current reversing unit and a monitoring unit. The degaussing power supply is composed of multiple degaussing modules connected in parallel, and multiple energy storage degaussing modules share a monitoring unit. The system first charges the energy storage unit to the rated voltage, the monitoring unit controls the subsequent constant current conversion unit to discharge the load with constant current pulses, the current reversing unit controls the forward and reverse current, and the control system stores energy after discharging according to the previous pulse. The remaining energy in the unit and the sum of the subsequent pulse energy are charged and controlled to maintain an appropriate remaining energy and voltage in the energy storage system until all pulse discharges are completed.
Description
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Technical field
The invention belongs to naval vessel, steamer demagnetization field, relate to a kind of accumulation energy type demagnetization module, demagnetization power supply and control method.
Background technology
The earth is a huge magnet, and iron and steel is the material being easily magnetized, and the naval vessel that iron and steel is built or submarine, steamer in the magnetic field in the earth, will be magnetized for a long time.As long as ship navigation is on ocean, the naval vessel being magnetized just must produce magnetic field, if do not eliminate this magnetic field, the naval vessel being magnetized is easy to be subject to the weapon attackings such as magnetic mine, torpedo, or becomes the target of magnetic detection equipment.There are two magnetic fields on naval vessel itself, and one is induced field, and offset by selfdemagnetization system on naval vessel in this magnetic field; Another is standing field, and this magnetic field will lean on degaussing stations or degaussing vessel regularly to its elimination of switching on.
It is the effective means of ship magnetic protection that degaussing system is installed on naval vessel.Object is prevention enemy's magnetic weapon attacking and magnetic detection, improves the survivability on naval vessel, and naval vessel degaussing system is mainly comprised of demagnetization winding, Degaussing Control Equipment and demagnetization power unit in naval vessel.Demagnetization power supply is the power amplifier device of Deperming Facility, and it provides direct current controllable current by the control signal of controller output to naval vessel demagnetization winding, is the important component part of Deperming Facility.
Current, degaussing system on naval vessel often adopts real-time power supply, after overcommutation in the mode of constant current to anti-magnetized coil provider to checker, the programmable current that amplitude progressively decays, its capacity is as required from tens to hundreds of volt, electric current is from tens to the training of several Wan An, power moment can reach MW class, this has just proposed very high requirement to real-time power supply, especially in wartime, if power supply can not reach required requirement in real time, effectively demagnetization of naval vessel, is also just easily subject to the threat of magnetic weapon.
Degaussing stations (ship) are the requisite equipment of naval vessel demagnetization, naval vessel will regularly be got back to female port degaussing stations (ship) and carry out large electric current demagnetization processing, the demagnetization instantaneous power of degaussing stations (ship) can reach tens more than megawatt, very high to the requirement of power supply, under special occasions, degaussing stations (ship) are by high-power diesel generator powered, and excessive output power has significantly increased the laid down cost of degaussing stations (ships), even causes effectively demagnetization of naval vessel.
For above deficiency, a kind of universalization, seriation, modularization, digitalisation and energy storage demagnetization power supply that can be in parallel are proposed, reduce the power supply capacity requirement such as degaussing stations (ship), improve hardware reliability simultaneously, very necessary.
Summary of the invention
technical matters:the invention provides a kind of applicable different capacity grade power-supply system, can realize seriation, universalization and modularization, be convenient to the accumulation energy type demagnetization module of dilatation, a kind of accumulation energy type demagnetization power supply that adopts above-mentioned demagnetization module is provided simultaneously, and a kind of charge/discharge control method of accumulation energy type demagnetization power supply.
technical scheme:accumulation energy type demagnetization module of the present invention, comprise charging control unit, energy-storage units, rear class constant current converter unit, electric current reversing unit and monitoring unit, the mouth of charging control unit and energy-storage units is connected with the input end of rear class constant current converter unit simultaneously, the mouth of rear class constant current converter unit is connected with electric current reversing unit, and monitoring unit communicates to connect with charging control unit, energy-storage units, rear class constant current converter unit and electric current reversing unit respectively; Rear class constant current converter unit comprises shunt voltage translation circuit and input filter capacitor, and voltage conversion circuit is pressure unit or lifting/voltage reducing unit.
In a kind of preferred version of accumulation energy type demagnetization module of the present invention, voltage conversion circuit is the pressure unit that N road BUCK reduction voltage circuit is formed in parallel, and N road BUCK reduction voltage circuit shares an output filter capacitor.
In a kind of preferred version of accumulation energy type demagnetization module of the present invention, voltage conversion circuit is the lifting/voltage reducing unit that N road Buck-Boost lifting/voltage reducing circuit is formed in parallel, and N road Buck-Boost lifting/voltage reducing circuit shares an output filter capacitor.
In accumulation energy type demagnetization module of the present invention, electric current reversing unit comprises two independently electric current direct-reverse switch, wherein the first electric current direct-reverse switch is arranged between rear class constant current converter unit anode and load one end, and the second electric current direct-reverse switch is arranged between rear class constant current converter unit negative terminal and the load other end.
In accumulation energy type demagnetization module of the present invention, electric current direct-reverse switch adopts mechanical switch mode or electronic switch mode, carries out zero current and connect and turn-off during discharge interval.
A kind of accumulation energy type demagnetization power supply of the present invention, is formed in parallel by a plurality of above-mentioned accumulation energy type demagnetization modules, and a plurality of accumulation energy type demagnetization modules share a monitoring unit.
The charge/discharge control method of accumulation energy type demagnetization power supply of the present invention, comprises the steps:
1) pre-charging stage, charging control unit charges to rated voltage to energy-storage units;
2) energy-storage units is after the conversion of rear class constant current converter unit, by electric current reversing unit to load discharge, power supply is after the control and the conversion of rear class constant current converter unit of charging control unit, by electric current reversing unit to load discharge, electric current reversing unit carries out the switching of direction of current at discharge interval, form the positive and negative pulse current replacing, power supply charges to energy-storage units by charging control unit at discharge interval;
3) pulse current that rear class constant current converter unit provides to load is constantly decayed, when the current power storage of energy-storage units is greater than succeeding impulse energy summation, in the pulsed discharge stage, power supply is no longer to load discharge, only by energy-storage units to load discharge, at discharge interval, power supply no longer charges to energy-storage units.
In the charge/discharge control method of accumulation energy type demagnetization power supply of the present invention, the pulse current decay mode in step 3) is equal difference decay or exponential damping.
Apparatus of the present invention adopt modular design philosophy, utilize the super capacitor feature of energy storage in a large number, the super capacitor component Design of energy storage is identical and unit independently, connect into structure parallel with one another, modular structure is applicable to the power-supply system of different capacity grade, can realize seriation, universalization and modularization, dilatation is very convenient; Charge controller unit and rear class converter unit adopt heterogeneous multiple transform device structure, and hardware has redundancy properties; According to demand in particular cases, by control system, control the unit number of using, to make up the defect of real-time power supply off-capacity; Array mode easily realizes N+M redundancy, greatly improves the reliability of entire system.
beneficial effect:compared to the prior art the present invention, has the following advantages:
(1) the rear class converter using of the present invention independently heterogeneous multiple transform device parallel waies of organizing more, existing demagnetization is mainly that Industrial Frequency Transformer adds silicon controlled rectifier scheme, device volume is large, power factor is low, large to Power supply capacity requirement, and adopt the independently heterogeneous multiple transform device parallel waies of organizing can effectively improve system reliability more; (2) electric current reversing unit of the present invention adopts mechanical switch mode or electronic switch mode, because interpulse period is long, use switch can accomplish that zero current is connected and shutoff, if the contact resistance of mechanical switch is enough little, can raise the efficiency, and the electric current reversing unit of other degaussing gears generally adopts H bridge scheme, though this scheme is controlled conveniently, but efficiency is not high, reliability is also lower; (3) demagnetization module of the present invention can compose in parallel the demagnetization power supply of each power grade, flexibility and reliability; (4) closed-centre system employing super capacitor of the present invention is energy storage component, can give full play to the advantage of super capacitor energy-storage, and more crucial is due to by the energy storage of super capacitor, can reduce greatly the capacity requirement to DC bus.For outgoing current 50-4000A adjustable, output voltage 0-600VDC continuously controllable demagnetization power supply continuously, if there is no super capacitor, all by DC bus powered mode, peak power is up to 2400kW, and pass through super capacitor energy-storage, by design, select the super capacitor of certain capacity, now DC bus is only needed the capacity of 800kW.
Demagnetization power supply consists of the parallel connection of N+M demagnetization module, the demagnetization module of demagnetization power supply when N is normal operation, M is redundant module, according to the first pulse current size of demagnetization power supply, calculate the demagnetization module of capacity suitable, several kilovolts of one-tenth output voltages capable of being combined, the demagnetization power supply of outgoing current hundreds of thousands of ampere, be suitable for aircraft carrier, all kinds of big or small naval vessel, submarine, the degaussing system of merchant ship.
Accompanying drawing explanation
Fig. 1 is the catenation principle figure of accumulation energy type demagnetization module of the present invention;
Fig. 2 is the functional block diagram of single accumulation energy type demagnetization module of the present invention;
Fig. 3 is accumulation energy type demagnetization power source design schematic diagram of the present invention;
When Fig. 4 is rear class constant-current converter employing step-down mode, demand output power and capacitor bank are counted matching relationship figure;
Fig. 5 is the circuit diagram of 6 road BUCK circuit crisscross parallel embodiment of accumulation energy type demagnetization module of the present invention;
Fig. 6 is typical erasing pulse mode chart.
The specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in further detail.
Accumulation energy type demagnetization module of the present invention, comprise charging control unit 1, energy-storage units 2, rear class constant current converter unit 3, electric current reversing unit 4, monitoring unit 5, the mouth of charging control unit 1 and energy-storage units 2 is connected with the input end of rear class constant current converter unit 3 simultaneously, the mouth of rear class constant current converter unit 3 is connected with electric current reversing unit 4, and monitoring unit 5 communicates to connect with charging control unit 1, energy-storage units 2, rear class constant current converter unit 3 and electric current reversing unit 4 respectively; Rear class constant current converter unit 3 comprises shunt voltage translation circuit 31 and input filter capacitor C1, and voltage conversion circuit 31 is pressure unit or lifting/voltage reducing unit.The pressure unit that voltage conversion circuit 31 is formed in parallel for N road BUCK reduction voltage circuit, N road BUCK reduction voltage circuit shares an output filter capacitor C2.
In an alternative embodiment of the invention, the lifting/voltage reducing unit that voltage conversion circuit 31 is formed in parallel for N road Buck-Boost lifting/voltage reducing circuit, N road Buck-Boost lifting/voltage reducing circuit shares an output filter capacitor C2.
In the present invention, electric current reversing unit 4 comprises two independently electric current direct-reverse switch, wherein the first electric current direct-reverse switch 41 is arranged between rear class constant current converter unit 3 anodes and load one end, and the second electric current direct-reverse switch 42 is arranged between rear class constant current converter unit 3 negative terminals and the load other end.Electric current direct-reverse switch adopts mechanical switch mode or electronic switch mode, carries out zero current and connect and turn-off during discharge interval.
Accumulation energy type demagnetization power supply of the present invention, is formed in parallel by a plurality of accumulation energy type demagnetization modules, and a plurality of accumulation energy type demagnetization modules share a monitoring unit 5.
Demagnetization waveform is shown in Fig. 6, and total erasing pulse number is known as B, and size of current, the width of each erasing pulse are known, and the energy of each erasing pulse is known like this.
The charge/discharge control method of accumulation energy type demagnetization power supply of the present invention, comprises the steps:
1) pre-charging stage, charging control unit charges to rated voltage to energy-storage units;
2) energy-storage units 2 is after 3 conversion of rear class constant current converter unit, by electric current reversing unit 4 to load discharge, power supply is after the control and 3 conversion of rear class constant current converter unit of charging control unit 1, by electric current reversing unit 4 to load discharge, electric current reversing unit 4 carries out the switching of direction of current at discharge interval, form the positive and negative pulse current replacing, power supply gives energy-storage units 2 chargings at discharge interval by charging control unit 1;
3) pulse current that rear class constant current converter unit 3 provides to load is constantly decayed, by detecting the voltage on super capacitor, can calculate the current power storage of energy-storage units 2, to A pulse, when the current power storage of energy-storage units 2 is greater than succeeding impulse energy summation, in the pulsed discharge stage, power supply is no longer to load discharge, only by energy-storage units 2 to load discharge, at discharge interval, power supply no longer gives energy-storage units 2 chargings.
In step 3), whether the current power storage that judges energy-storage units 2 is greater than succeeding impulse energy summation, according to calculating in real time current power storage, simultaneously because erasing pulse number is definite before demagnetization, the size of pulse current, time length, all known, the energy of each erasing pulse is known like this, can determine succeeding impulse energy summation according to the number of times when prepulse and the number of total erasing pulse, thus the size of the more current power storage of judgement and succeeding impulse energy summation.
In above-mentioned control method, the pulse current decay mode in step 3) is equal difference decay or exponential damping.
The leading indicator that the demagnetization power supply of actual design reaches as required has: outgoing current 50-4000A is adjustable continuously; Output voltage: direct current 0-600V is adjustable continuously; Output current wave need be that pulsed is positive and negative alternately.
Based on above design requirement, the scheme of specific embodiment 1 as shown in Figure 2,
(1) power supply: be line voltage 680V left and right alternating current by external source step-down after Industrial Frequency Transformer, after uncontrollable rectification, become the direct current (DC) (considering by super capacitor 864V voltage) of 922V left and right, form DC bus;
(2) charger to super capacitor charging is connected in parallel on DC bus, and charge controller is accepted instruction, carries out the charging of specific mode: constant current, constant voltage, permanent power or combination;
(3) charge controller.The effect of charge controller has 2, and the firstth, charging effect, before first pulsed discharge, charger charges to predetermined voltage to super capacitor, during discharge interval, super capacitor is charged; The second, during pulsed discharge with super capacitor jointly to load discharge, form pulse current, can reduce like this requirement of system to super capacitor quantity;
(4) super capacitor.The effect of super capacitor is energy storage, jointly forms impulse discharge current with external source (power station), utilizes the intermittent feature of pulsed discharge, the requirement of reduction system to external power supply power;
(5) rear class changer and inverter.Its effect is by the pulse that transformation of energy is current constant, the time is controlled, direction of current is controlled of the energy of super capacitor and charger power supply, rear class changer essence is a direct current constant current converting means, adopt PWM mode, current precision is not less than 1%, and pulse rise time and fall time are not more than 1 second;
(6) monitor.It is the brain of whole system, according to the pulse current size of setting, pulse width, interpulse period, direction of current, control the switch motion of rear class changer, inverter, control charging current and the capacitance voltage of charger, monitor and charge controller, rear class changer, inverter, electric capacity equalizer isopreference are used CAN bus to communicate.
In whole system, have two energy sources to provide energy to pulsed discharge, one is external source, and one is super capacitor.Because pulse discharging energy summation is constant, increase super capacitor capacity, just can reduce the power of external source; Otherwise increase external source capacity and just can reduce the capacity of super capacitor.
As shown in Figure 2, every 1 group of parallel capacitance forms an independently demagnetization module, and each independently demagnetization block configuration is charge controller independently, rear class changer independently, and the backward load in parallel of rear class changer provides discharge pulse current.
Fig. 3 is separate unit demagnetization power source design figure, and for the present embodiment, the electric current of each demagnetization module is pressed 500A design, adopts after 10+2 module parallel connection, and the pulse current of maximum 5000A can be provided; Module by varying number is carried out parallel combination, just can meet the requirement of outgoing current 50-4000A continuously controllable.
Select the super capacitor that the withstand voltage 2.7V capacity of monomer is 3000F, with 320 single modules that are composed in series withstand voltage 864V.When Fig. 4 is rear class constant-current converter employing step-down mode, demand output power and capacitor bank are counted matching relationship figure, are divided into the decay of electric current equal difference and two kinds of situations of current index decay.As can be seen from the figure, electric current equal difference decay is with exponential damping when output power is larger, and capacitor bank number is more or less the same, and at output power hour, both quantity variances are very large.
Fig. 5 is 6 BUCK circuit crisscross parallel circuit diagrams, the rear class changer of every pack module is comprised of 6 BUCK circuit crisscross parallels, form 6 and 6 weigh chopper circuits mutually, each switching valve electric current 100A, the switching valve frequency of operation of this rank electric current can be higher, the 66 further requirements of reduction to filter inductance of heavy chopper circuits mutually.
Native system has adopted unique benefit electricity formula balanced, when charging, detect monomer electric capacity maximum capacity, open the corresponding passage of large bulk capacitance, carry out the preferential electric formula charging of mending, when low capacity electric capacity is full of, guarantee that large bulk capacitance also can be full of electric weight simultaneously.In when electric discharge, monomer capacity smaller is supplemented electricly, guarantee that all monomers all can emit maximum capacity.
In addition, in system, all communication all adopts CAN mode.Owing to increasing the redundancy of system or the structure of composition module, form the parallel connection that high current pulsed discharge needs a plurality of rear class translation circuits, it is exactly the stationary problem on edge before and after pulse that the parallel connection of a plurality of rear class changers exists a subject matter.And the advantage such as that CAN bus communication has is real-time, transmission distance is far away, anti-electromagnetic interference capability is strong.In the present invention program, add man-machine interface master controller, the data of transmission only have the low volume datas such as electric current, dutycycle, start and stop substantially, and the overall time of delay of call duration time is at Millisecond.
Claims (8)
1. an accumulation energy type demagnetization module, it is characterized in that, this module comprises charging control unit (1), energy-storage units (2), rear class constant current converter unit (3), electric current reversing unit (4) and monitoring unit (5), the mouth of described charging control unit (1) and energy-storage units (2) is connected with the input end of rear class constant current converter unit (3) simultaneously, the mouth of rear class constant current converter unit (3) is connected with electric current reversing unit (4), monitoring unit (5) respectively with charging control unit (1), energy-storage units (2), rear class constant current converter unit (3) and electric current reversing unit (4) communication connection, described rear class constant current converter unit (3) comprises shunt voltage translation circuit (31) and input filter capacitor (C1), and described voltage conversion circuit (31) is pressure unit or lifting/voltage reducing unit.
2. accumulation energy type demagnetization module according to claim 1, is characterized in that, the pressure unit that described voltage conversion circuit (31) is formed in parallel for N road BUCK reduction voltage circuit, and described N road BUCK reduction voltage circuit shares an output filter capacitor (C2).
3. accumulation energy type demagnetization module according to claim 1, it is characterized in that, the lifting/voltage reducing unit that described voltage conversion circuit (31) is formed in parallel for N road Buck-Boost lifting/voltage reducing circuit, described N road Buck-Boost lifting/voltage reducing circuit shares an output filter capacitor (C2).
4. according to the accumulation energy type demagnetization module described in claim 1,2 or 3, it is characterized in that, described electric current reversing unit (4) comprises two independently electric current direct-reverse switch, wherein the first electric current direct-reverse switch (41) is arranged between rear class constant current converter unit (3) anode and load one end, and the second electric current direct-reverse switch (42) is arranged between rear class constant current converter unit (3) negative terminal and the load other end.
5. accumulation energy type demagnetization module according to claim 4, is characterized in that, described electric current direct-reverse switch adopts mechanical switch mode or electronic switch mode, carries out zero current and connect and turn-off during discharge interval.
6. an accumulation energy type demagnetization power supply, is characterized in that, described demagnetization power supply is formed in parallel by accumulation energy type demagnetization module described in a plurality of claims 1,2,3,4 or 5, and a plurality of accumulation energy type demagnetization modules share a monitoring unit (5).
7. a charge/discharge control method for accumulation energy type demagnetization power supply, is characterized in that, the method comprises the steps:
1) pre-charging stage, charging control unit (1) charges to rated voltage to energy-storage units (2);
2) energy-storage units (2) is after rear class constant current converter unit (3) conversion, by electric current reversing unit (4) to load discharge, power supply is after the control and rear class constant current converter unit (3) conversion of charging control unit (1), by electric current reversing unit (4) to load discharge, electric current reversing unit (4) carries out the switching of direction of current at discharge interval, form the positive and negative pulse current replacing, power supply is given energy-storage units (2) charging at discharge interval by charging control unit (1);
3) pulse current that rear class constant current converter unit (3) provides to load is constantly decayed, when the current power storage of energy-storage units (2) is greater than succeeding impulse energy summation, in the pulsed discharge stage, power supply is no longer to load discharge, only by energy-storage units (2) to load discharge, at discharge interval, power supply is no longer given energy-storage units (2) charging.
8. the charge/discharge control method of a kind of energy storage degaussing gear according to claim 7, is characterized in that, the pulse current decay mode in described step 3) is equal difference decay or exponential damping.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104361974A (en) * | 2014-11-07 | 2015-02-18 | 中国人民解放军海军工程大学 | Movable demagnetizing device |
| CN104362883A (en) * | 2014-11-07 | 2015-02-18 | 中国人民解放军海军工程大学 | Portable pulse demagnetization working power supply with supercapacitor energy storage function |
| CN104868538A (en) * | 2015-05-13 | 2015-08-26 | 东南大学 | Method for determining energy-storage capacitance and filter inductance and capacitance of energy-storage demagnetization power supply |
| CN104882949A (en) * | 2015-05-13 | 2015-09-02 | 东南大学 | Method for selecting energy-storage capacitance, filter inductance and filter capacitance of energy-storage degaussing power supply |
| CN108155790A (en) * | 2017-12-29 | 2018-06-12 | 北京天诚同创电气有限公司 | Two-way DC/DC converters and two-way voltage conversion system |
| CN108631642A (en) * | 2018-04-18 | 2018-10-09 | 中国人民解放军海军工程大学 | A kind of great power pulse power source system based on batteries to store energy |
| CN113195356A (en) * | 2018-12-10 | 2021-07-30 | Stl系统股份公司 | Demagnetization and characteristic measuring device |
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| CN104882949A (en) * | 2015-05-13 | 2015-09-02 | 东南大学 | Method for selecting energy-storage capacitance, filter inductance and filter capacitance of energy-storage degaussing power supply |
| CN104882949B (en) * | 2015-05-13 | 2018-02-02 | 东南大学 | Storage capacitor and filter inductance, the electric capacity method for selecting of a kind of energy storage demagnetization power supply |
| CN108155790A (en) * | 2017-12-29 | 2018-06-12 | 北京天诚同创电气有限公司 | Two-way DC/DC converters and two-way voltage conversion system |
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| CN113195356A (en) * | 2018-12-10 | 2021-07-30 | Stl系统股份公司 | Demagnetization and characteristic measuring device |
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