CN205490174U - Controllable electromagnetic emitting device in ocean - Google Patents

Abstract

The utility model belongs to the technical field of the ocean electromagnetic survey, a controllable electromagnetic emitting device in ocean is provided, include: device and emitter under water on the ship, device power including the ship on the ship, on the ship power with the emitter is connected under water, sends single -phase power frequency or the intermediate frequency alternating current that is greater than 1000V to emitter under water, the emitter is received under water the single -phase power frequency or the intermediate frequency alternating current that are greater than 1000V to the single -phase power frequency or the intermediate frequency ac inversion that will be greater than 1000V are high -power low frequency low pressure alternating current, the controllable bipolarity pulse current of emission frequency. The emitter is the transmission of electricity of single -phase high voltage under water, has improved power transfer efficiency, adopt the input parallel outlet's that establishes ties combination formula half -bridge circuit, convert high voltage dc into low -voltage direct current, increase the transmit power of emitter, reduce the requirement of device electric stress, promote emitter power density, reduce the device volume, shorten construction cycle, practice thrift economic cost.

Description

A kind of ocean controllable electromagnetic discharger

Technical field

This utility model belongs to ocean EM exploration technical field, is specifically related to a kind of ocean controlled Electromagnetic launch system.

Background technology

Global ocean petroleum resources is the abundantest, and in the large oilfield of discovered in recent years, ocean is led Territory accounts for 60%, but gas and oil in sea technology is also in initial stage.Gas and oil in sea Technology mainly has marine geochemical prospecting, marine streamer seismic prospecting, four-dimensional exploration, ocean Controllable source electromagnetic method and microbial prospecting technology, gas and oil in sea development technique is to deep-sea skill Art development be inexorable trend, wherein, ocean controllable source electromagnetic method with it to seabed high resistant thin layer The exploration cost of good discrimination ability and relative moderate is increasingly becoming seabed deep water hydrocarbon resource detection Important method.

Ocean controllable source electromagnetic method uses the emission source near seabed launch artificial pulse current and put Array electromagnetic receiver in seabed receives the electromagnetic field signal from subsea strata.Low frequency is artificial The electromagnetic signal that pulse current produces is to sea water and is full of in the subsea strata of water propagation, ground, seabed Layer resistivity is higher than seawater resistivity, therefore through subsea strata propagate electromagnetic wave ratio through sea water The velocity of electromagnetic wave that face is propagated wants fast, energy attenuation is fast.When emission source and receptor distance and height Resistance reservoir buried depth quite or slightly larger time, oily resistive formation be reflected back the electromagnetism of sea-bottom receivers Wave energy will exceed the electromagnetic wave energy of through receptor, reflects also above through Air Interface simultaneously With the electromagnetic wave energy of refraction, occupy leading position；If subsea strata does not has high resistant oil gas Layer, then through subsea strata reflection and refraction electromagnetic wave energy the faintest even without.Pass through The inversion interpretation receiving electromagnetic field signal is obtained the resistivity distribution of subsurface formations, by resistance Rate and the substantial connection of reservoir hydrocarbon saturation, be directly used in oil-gas Layer in detection subsea strata Position and scale.

Wherein, controllable electromagnetic emission source in ocean produces artificial pulse in being ocean controllable source electromagnetic method The device of electric current, according to its operation principle, the strength and stability of artificial pulse current, to surveying Credibility and the degree of accuracy of visiting result have decisive action.Therefore, design one exports artificial arteries and veins The ocean controllable electromagnetic emission source rushing current intensity height, strong interference immunity, transient response fast is sea The basis that ocean controllable source electromagnetic method is implemented.

At present, existing ocean controllable electromagnetic launching technique mainly has two kinds: the first is to launch Source uses the single-phase or three phase mains less than 400V, owing to input voltage grade is relatively low, if using One to two km cables transfer electrical energy into close to sub sea location, and line loss is higher, electric energy Utilization rate is relatively low, it is difficult to realize exporting big electric current, high power ocean controllable electromagnetic is launched.In order to Solving this problem, when electromagnetic survey is implemented, Electromagnetic Launching source is placed on hull, sends out Penetrate the output cable in source pulled by ship be suspended in marine, to marine transmitting.But this launch party Case, makes exploration context and the degree of depth be restricted, and design is launched power and is restricted.The second It is that emission source uses direct current transportation, electric energy can be transferred to sending out close to seabed with DC form Penetrate source, scope and the depth measurement of emission source can be improved, but due to the restriction of existing device, institute The transmitting power of design is the highest.

Utility model content

The defect existed for prior art, the utility model proposes a kind of ocean controllable electromagnetic and sends out Injection device, to solve prior art existence due to the restriction of existing device, emission source transmitting power The highest problem.

For this purpose it is proposed, this utility model provides a kind of ocean controllable electromagnetic discharger, including: Device and underwater emission source on ship；

On described ship, device includes ship power source, and described ship power source is with described underwater emission source even Connect, send the single phase industrial frequence more than 1000V or medium frequency alternating current to described underwater emission source；

Described underwater emission source receives the described single phase industrial frequence more than 1000V or medium frequency alternating current, And the described single phase industrial frequence more than 1000V or medium frequency alternating current are converted to high power low-frequency low pressure Alternating current, the bi-directional pulse current that tranmitting frequency is controlled.

Wherein, on described ship, device also includes emission source control station on ship；

On described ship, emission source control station is connected with described underwater emission source, monitors in real time and controls The emission state in described underwater emission source.

Wherein, described underwater emission source, including: rectification circuit, combined semi bridge circuit, LC Wave filter and radiating circuit；

Described rectification circuit input end is connected with described ship power source, will receive described in be more than Single phase industrial frequence or the medium frequency alternating current of 1000V are converted to high voltage direct current；

The input series connection of each half-bridge circuit in described combined semi bridge circuit, and whole with described Current circuit outfan connects；The outfan of each half-bridge circuit in described combined semi bridge circuit is also It is connected with described LC filter input end after connection；Realize described high voltage direct current and be converted to low-pressure direct Stream electricity；

Described radiating circuit input is connected with described LC filter output；Described radiating circuit High power low-frequency low-voltage AC is obtained, controlled double of tranmitting frequency according to described low-voltage DC Polar impulse electric current.

Wherein, described combined semi bridge circuit includes main module circuit and from modular circuit；

Described main module circuit is any one road half-bridge circuit in described combined semi bridge circuit；

Described from modular circuit be described combined semi bridge circuit in addition to main module circuit half Bridge circuit.

Wherein, described device also includes controller；

Described controller includes a master controller and from controller group, and described master controller is institute State the controller of main module circuit, described from control group be the described controller from modular circuit；

Described master controller includes that Control of Voltage outer shroud and electric current control internal ring；

The output of the Voltage Feedback input of described master controller and described combined semi bridge circuit is also Interlink point voltage testing circuit connects, using sys node voltage as the voltage of described master controller Control the voltage feedback value of outer shroud；

The output electric current inspection of the current feedback input of described master controller and described main module circuit Slowdown monitoring circuit connects, and described main module circuit exports the electric current electric current control as described master controller The current feedback values of internal ring processed；Using the Control of Voltage outer shroud output valve of described master controller as institute The electric current stating master controller controls the given value of current value of internal ring；

Described from controller group, respectively include current regulator from controller, described each from controller Current feedback input and described combined semi bridge circuit in each from the output electric current of modular circuit Testing circuit connects, and exports electric current as the described electric current from controller using described from modular circuit Control the current feedback values of ring；

On described ship, emission source control station is connected with emission source controller by optical fiber, described transmitting Source controller is connected with described master controller by SPI communication, and described master controller is by reception On described ship emission source control station using output voltage set in advance and given value of current value as described The set-point of the Control of Voltage outer shroud of master controller, it is achieved on described ship, emission source control station is to water The emitting voltage of lower emission source and the control of emission current；

Described master controller by CAN respectively with described from controller group each from controller Connect；And the voltage control loop output valve in described master controller is transferred to by CAN Described respectively from controller, as the given value of current value of described each current regulator from controller.

Wherein, described device also includes pulse-width modulator PWM group；

Described master controller and described respectively adjust with described pulse width respectively from the outfan of controller In device PWM group processed, each pulse-width modulator PWM input connects；

Described each pulse-width modulator PWM outfan is each with described combined semi bridge circuit The drive end of half-bridge circuit connects, and drives opening of each half-bridge circuit in described combined semi bridge circuit Guan Guan.

Wherein, described device also includes emission source controller；

Described emission source controller is connected with described emission source control station by optical fiber, receives described The tranmitting frequency set in advance that on ship, emission source control station sends, described emission source controller Outfan is connected with the switching tube IGBT drive end of described radiating circuit, it is achieved launch on described ship The control to the tranmitting frequency in described underwater emission source of the source control station.

A kind of ocean controllable electromagnetic discharger that this utility model provides, by using single-phase work Frequency or medium-frequency high-voltage power supply to transmit electric energy to underwater emission source, improve the efficiency of transmission of electric energy； And use the combined semi bridge circuit of series connection input Parallel opertation, reduce the voltage of switching tube And current stress, reduce the requirements of type selecting of device in circuit, improve each half-bridge electricity simultaneously The switching frequency on road and power density, increase the transmitting power of emission source.It addition, this practicality Novel ocean controllable electromagnetic discharger circuit structure is simple, it is easy to accomplish, each half-bridge circuit Switching frequency is high, decreases the machine volume of electromagnetic launch system；By using fabricated structure, Shorten construction period, save Financial cost.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model or technical scheme of the prior art, below will The accompanying drawing used required in embodiment or description of the prior art is briefly described, aobvious and easy Insight, the accompanying drawing in describing below is only the discloseder embodiments of this utility model, for From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to root Other accompanying drawing is obtained according to these figures.

The ocean controllable electromagnetic discharger circuit knot that Fig. 1 provides for this utility model one embodiment Structure schematic diagram；

The structural representation of the half-bridge circuit that Fig. 2 provides for this utility model one embodiment；

The combined semi bridge circuit that Fig. 3 provides for this utility model one embodiment carries out sharing control Structural representation；

The structure of the ocean controllable electromagnetic discharger that Fig. 4 provides for this utility model one embodiment Schematic diagram；

Switching tube in the combined semi bridge circuit that Fig. 5 provides for this utility model one embodiment Conduction phase figure；

The output electric current of every road half-bridge circuit that Fig. 6 provides for this utility model one embodiment and group Oscillogram in the output electric current of box-like half-bridge circuit.

Description of reference numerals

In figure: 1-1: ship power source 1-2: emission source control station 2 on ship: underwater emission source 3: Rectification circuit 4: combined semi bridge circuit 5:LC wave filter 6: radiating circuit 7: main Controller 10: emission source controller 4-1: first via half-bridge circuit the 4-2: the second road half-bridge Circuit the 4-5: the five road half-bridge circuit 8-1: the first from controller 8-4: the four from control Device the 9-1: the first pulse-width modulator PWM the 9-2: the second pulse-width modulator PWM 9-5: the five pulse-width modulator PWM.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, to embodiment of the present utility model In technical scheme be clearly and completely described, it is clear that described embodiment be only A part of embodiment of the present utility model rather than whole embodiments.Based on this utility model Embodiment, those of ordinary skill in the art are obtained under not making creative work premise Every other embodiment, broadly fall into this utility model protection scope.

Launch as it is shown in figure 1, this utility model one embodiment provides a kind of ocean controllable electromagnetic Device, this device includes: device and underwater emission source 2 on ship；On ship, device includes ship power source 1-1；Ship power source 1-1 is connected with underwater emission source 2, sends more than 1000V to underwater emission source 2 Single phase industrial frequence or medium frequency alternating current；Described underwater emission source receives the described list more than 1000V Phase power frequency or medium frequency alternating current, and by the described single phase industrial frequence more than 1000V or medium frequency alternating current Be converted to high power low-frequency low-voltage AC, the bi-directional pulse current that tranmitting frequency is controlled.

A kind of ocean controllable electric magnetic source discharger that the present embodiment provides, uses single-phase high voltage electricity Transmission electric energy, transfers electrical energy into the underwater emission source close to seabed, uses high voltage power transmission significantly Improve electric energy efficiency of transmission, overcome the restriction of existing device, improve sending out of underwater emission source Penetrate power.

Specifically, the ship power source 1-1 in the present embodiment uses voltage to be 3000V, frequency is The single phase alternating current power supply of 50Hz.Ship power source 1-1 is transferred electrical energy into close to seabed by cable Underwater emission source, under the conditions of identical output, by improve input voltage can reduce The line consumption of transmission line, reduces the current stress of each device in circuit.

Specifically, in the present embodiment, on ship, device also includes emission source control station 1-2 on ship； On ship, emission source control station 1-2 is connected with underwater emission source 2, in real time monitoring underwater emission source 2 Emission state.

It should be noted that the ocean controllable electromagnetic discharger of the present embodiment is underwater emission source 2 Real time emission frequency, emitting voltage and emission current by optical-fibre communications be transferred on ship launch Source control station 1-2, it is achieved that monitor the emission state in underwater emission source 2 in real time.

Specifically, the underwater emission source 2 in the present embodiment includes rectification circuit 3, combination type half-bridge Circuit 4, LC wave filter 5 and radiating circuit 6；The input of rectification circuit 3 and ship power source The outfan of 1-1 connects, and the single phase industrial frequence more than 1000V received or medium frequency alternating current is turned It is changed to high voltage direct current；The input of combined semi bridge circuit 4 Zhong Ge road half-bridge circuit is with whole The outfan of current circuit 3 connects；The outfan of each half-bridge circuit in combined semi bridge circuit 4 It is connected with LC filter input end after parallel connection；Above-mentioned high voltage direct current is converted to low-voltage direct Electricity；The input of radiating circuit 6 is connected with the outfan of LC wave filter 5；Radiating circuit 6 High power low-frequency low-voltage AC is obtained, controlled double of tranmitting frequency according to above-mentioned low-voltage DC Polar impulse electric current.

Specifically, the combined semi bridge circuit 4 in the present embodiment is made up of five road half-bridge circuits, The input side of combined semi bridge circuit 4 is cascaded structure；The outlet side of combined semi bridge circuit 4 For parallel-connection structure.

It should be noted that the present embodiment does not limit the half-bridge circuit in combined semi bridge circuit Quantity, those skilled in the art can be according to practical situation, by a number of half-bridge circuit group Become combination type half-bridge circuit.

Specifically, the ocean controllable electromagnetic discharger of the present embodiment, use high voltage power transmission, carry High electric energy efficiency of transmission, reduces opening in each half-bridge circuit in combined semi bridge circuit 4 Close the current stress of the device such as pipe IGBT and commutation diode.Meanwhile, by using series connection input The combined semi bridge circuit 4 of Parallel opertation, is reduced to former defeated by the input voltage of every road half-bridge circuit Enter the 1/5 of voltage, therefore by the switching tube IGBT in the half-bridge circuit of every road and commutation diode Voltage stress is reduced to original 1/5, and, use combined semi bridge circuit 4 by high input voltage End is isolated with low-voltage output, improves the security performance of whole device to device The standard of type selecting reduces, and increases the selection space of device, substantially increases the switch of half-bridge circuit Frequency, improves power density and the energy conversion efficiency in underwater emission source 2, increases under water The transmitting power of emission source 2.And, by using the structure of combined semi bridge circuit 4, subtract The volume of few electromagnetic launch system, shortens construction period, saves Financial cost.

Specifically, the S in Fig. 1₁-S₁₀For IGBT switching tube, C_S1-C_S10For half-bridge dividing potential drop electricity Hold, D_Z1-D_Z10For transformer secondary commutation diode, L and C be combined semi bridge circuit 4 also The filter inductance of connection output and electric capacity.

It should be noted that the transmitting capacity of the ocean controllable electromagnetic discharger in the present embodiment Can also according to practical situation need carry out increase-volume.

Fig. 2 shows the structural representation of combined semi bridge circuit 4 Zhong Mei road half-bridge circuit, Stable in order to ensure the combined semi bridge circuit 4 in the present embodiment, it is ensured that every road half-bridge electricity In road, respective devices to keep consistent.In the ideal situation, as long as ensureing in the half-bridge circuit of every road Device parameters model consistent, dutycycle unanimously can ensure that in combined semi bridge circuit 4 each Road half-bridge circuit parallel current output current-sharing.But the circuit of reality nonideality, every road Even if the device model in half-bridge circuit is identical, its parasitic parameter is also not quite similar, every road half-bridge The output electric current of circuit always there are differences, and the difference exporting electric current can cause every road half-bridge electricity The input power on road is unbalanced, and the loss of every road half-bridge circuit is inconsistent, causes the entirety of device Degradation, the service life of shortening device.Therefore, in order to ensure the combination in the present embodiment Every road half-bridge circuit output electric current current-sharing of formula half-bridge circuit 4, the present embodiment is to combination type half-bridge Circuit 4 have employed sharing control, with control combination formula half-bridge circuit 4 Zhong Mei road half-bridge circuit Current-sharing exports.

Specifically, in order to combined semi bridge circuit 4 is used sharing control, sea in the present embodiment Ocean controllable electromagnetic discharger also includes controller, and this controller includes master controller 7 and from control Device group processed, and combined semi bridge circuit 4 is divided into main module circuit and from modular circuit；Will Any one road half-bridge circuit in combined semi bridge circuit 4 is as main module circuit；By combination type The all half-bridge circuits in addition to main module circuit in half-bridge circuit 4 are as from modular circuit.

Fig. 3 shows that the combined semi bridge circuit that this utility model one embodiment provides carries out current-sharing The structural representation controlled: as a example by combined semi bridge circuit is made up of five road half-bridge circuits, will First via half-bridge circuit 4-1 is as main module circuit, by the second road half-bridge circuit 4-2, the 3rd tunnel Half-bridge circuit (not shown), the 4th road half-bridge circuit (not shown) and the 5th tunnel Half-bridge circuit 4-5 is as from modular circuit；Using master controller 7 as the control of above-mentioned main module circuit Device processed, using from controller group as from the controller of modular circuit: by first from controller 8-1 As the controller of the second road half-bridge circuit 4-2, using second from controller 8-2 as the 3rd tunnel partly The controller of bridge circuit, electric as the 4th road half-bridge from controller (not shown) using the 3rd The controller on road, using the 4th from controller (not shown) as the 5th road half-bridge circuit 4-5 Controller.

Master controller 7 includes that Control of Voltage outer shroud and electric current control internal ring；The voltage of master controller Feedback input end is connected with the output-parallel node voltage testing circuit of combined semi bridge circuit 4, Using sys node voltage as the voltage feedback value of the Control of Voltage outer shroud of master controller 7；Master control The current feedback input of device 7 processed is connected with the output current detection circuit of main module circuit, will Main module circuit output electric current is as the current feedback values of the electric current control internal ring of master controller 7； Using the Control of Voltage outer shroud output valve of master controller 7 as master controller 7 electric current control internal ring Given value of current value.Respectively current regulator is included from controller, respectively from control from controller group The current feedback input of device is each from the output electric current of modular circuit with combined semi bridge circuit 4 Testing circuit connects；Master controller 7 is connected with emission source controller 10 by SPI communication, sends out Penetrating source controller 10 to be connected with emission source control station 1-2 on ship by optical fiber, master controller 7 will Receive ship on emission source control station 1-2 transmission output voltage set in advance and given value of current It is worth the set-point of the Control of Voltage outer shroud as master controller 7, it is achieved emission source control on described ship Emitting voltage and the emission current in underwater emission source 2 are controlled by platform 1-2 processed；Master controller 7 passes through CAN is respectively connected from controller with from controller group respectively；And by master controller 7 Voltage control loop output valve is transferred to respectively from controller by CAN, as each from controller In the given value of current value of current regulator.Combined semi bridge circuit is used all by the present embodiment Flow control, it is ensured that the stable operation of combined semi bridge circuit, it is ensured that combination type half-bridge electricity The output current-sharing on road, it is ensured that the output equilibrium of every road half-bridge circuit, improves device Performance, extends service life.

Specifically, on ship emission power control station transmission output voltage and given value of current value according to Demand is set in advance.

Specifically, Vg1, Vg2, Vg3, Vg4, the Vg5 in Fig. 3 is each road half-bridge circuit Input voltage；A, B are two sys nodes of combined semi bridge circuit 4 outlet side, Vo be A, B two point voltage；R_load is sea water load；Kv is sys node voltage detecting voltage change ratio； Kc1, Kc2, Kc3, Kc4, Kc5 are the output electric current measure no-load voltage ratio of each road half-bridge circuit；Vref For output voltage set-point；Vf is A, B two value of feedback of point voltage；Vc is first via half-bridge The output of the master controller Voltage loop in circuit 4-1；If1 is first via half-bridge circuit 4-1 Output current feedback values, If2, If3, If4, If5 be respectively the second road half-bridge circuit 4-2, the 3rd Road half-bridge circuit, the 4th road half-bridge circuit and the output current feedback of the 5th road half-bridge circuit 4-5 Value；D1, D2, D3, D4, D5 are the driving dutycycle of each road half-bridge circuit.

Specifically, the process of the sharing control in the present embodiment is as follows:

To the voltage control loop positive input input and output voltage specified rate Vref of master controller 7, The parallel connection of combined semi bridge circuit 4 is inputted to the voltage control loop reverse input end of master controller 7 Voltage Feedback amount Vf of A, B of node, the voltage control loop outfan of master controller 7 and master The positive input of the current regulator of controller 7 connects.The current regulator of master controller 7 Reverse input end input first via half-bridge circuit 4-1 feedback current.First from controller 8-1 Current regulator, second from the current regulator of controller, the 3rd from the electric current control of controller Ring processed and the 4th from the current regulator of controller 8-4 respectively according to the electric current control with master controller 7 The connected mode that ring processed is identical is attached.By master controller 7 and four from controller output end Connected by the drive end of five pulse-width modulator PWM and five road half-bridge circuits respectively.

First via half-bridge circuit 4-1 with Vref for output voltage specified rate, combined semi bridge circuit 4 Outlet side sys node A, B voltage Vf be feedback quantity, Vref and Vf pass through master controller 7 Control of Voltage outer shroud obtain electric current control internal ring specified rate Vc；Vc and first via half-bridge circuit 4-1 Output current feedback amount If1 control internal ring by the electric current of master controller 7, adjust the first via half Driving dutycycle D1 of bridge circuit 4-1, it is ensured that the output voltage of combined semi bridge circuit 4 is constant.

From modular circuit, the Control of Voltage outer shroud of master controller 7 obtains Vc, passes through CAN Bus, is transferred to from modular circuit, as controlling from the electric current of controller group from modular circuit The given value of current amount of ring, Vc and the feedback quantity Ifi (i=2,3,4,5) from modular circuit self output electric current Compare, then by each road from the current regulator from controller of modular circuit, through electric current control Ring processed is calculated from driving Duty ratio control amount D2 of modular circuit, D3, D4, D5, adjusts The whole output electric current from modular circuit.Owing to the current inner loop of master controller 7 and four are from control The electric current loop specified rate of device is identical, also ensures combined semi bridge circuit 4 Zhong five road half-bridge electricity The current-sharing output on road.

It should be noted that the Control of Voltage outer shroud relational expression of master controller 7 is as follows:

Vc=(Vref-Vf) G_VC (1)

Wherein, G_VCControl of Voltage outer shroud for master controller 7 transmits function.

It is as follows that the electric current of master controller 7 controls internal ring relational expression:

D1=(Vc-If1) G_IC1 (2)

Wherein, G_IC1Electric current for master controller 7 controls internal ring transmission function.

Formula (2) is brought into formula (1) obtain:

D1=[(Vref-Vf) G_VC-If1]G_IC1 (3)

In like manner, the current regulator relational expression from controller group can be obtained:

D2=(Vc-If2) G_IC2 (4)

D3=(Vc-If3) G_IC3 (5)

D4=(Vc-If4) G_IC4 (6)

D5=(Vc-If5) G_IC5 (7)

Wherein, G_IC2、G_IC3、G_IC4、G_IC5For each from controller group 8 from controller The transmission function of current regulator.

Shown in five road input voltage relations such as formula (8) of combined semi bridge circuit 4:

Vg1=Vg2=Vg3=Vg4=Vg5=V_g/5 (8)

Wherein, Vg is the input voltage of combined semi bridge circuit 4.

In combined semi bridge circuit 4, five road half-bridge circuit output voltages and input voltage relation are as public Shown in formula (9) to (13):

$Vo1=Vg1*D1*\frac{1}{2*n1}=\frac{Vg}{5}*D1*\frac{1}{2*n1}---\left(9\right)$

$\mathrm{Vo}2=\mathrm{Vg}2*D2*\frac{1}{2*n2}=\frac{Vg}{5}*D2*\frac{1}{2*n2}---\left(10\right)$

$Vo3=Vg3*D3*\frac{1}{2*n3}=\frac{Vg}{5}*D3*\frac{1}{2*n3}---\left(11\right)$

$Vo4=Vg4*D4*\frac{1}{2*n4}=\frac{Vg}{5}*D4*\frac{1}{2*n4}---\left(12\right)$

$Vo5=Vg5*D5*\frac{1}{2*n5}=\frac{Vg}{5}*D5*\frac{1}{2*n5}---\left(13\right)$

Wherein, Vo1, Vo2, Vo3, Vo4, Vo5 are respectively the output electricity of five road half-bridge circuits Pressure；N1, n2, n3, n4, n5 are respectively transformer voltage ratio in five road half-bridge circuits.Knot Five road half-bridge circuit output voltages and input voltage relational expression in charge-coupled box-like half-bridge circuit 4, can To obtain shown in road half-bridge circuit output current relationship such as formula (14) to (18):

$Io1=Vo1/R\_load=\frac{Vg}{5}*\frac{D1}{2*n1}*\frac{1}{R\_load}---\left(14\right)$

$Io2=Vo2/R\_load=\frac{Vg}{5}*\frac{D2}{2*n2}*\frac{1}{R\_load}---\left(15\right)$

$Io3=Vo3/R\_load=\frac{Vg}{5}*\frac{D3}{2*n3}*\frac{1}{R\_load}---\left(16\right)$

$Io4=Vo4/R\_load=\frac{Vg}{5}*\frac{D4}{2*n4}*\frac{1}{R\_load}---\left(17\right)$

$Io5=Vo5/R\_load=\frac{Vg}{5}*\frac{D5}{2*n5}*\frac{1}{R\_load}---\left(18\right)$

If realizing five road half-bridge circuit output current-sharing in combined semi bridge circuit 4, i.e. make

Io1=Io2=Io3=Io4=Io5 (19)

Then by master controller 7 and output duty cycle must be adjusted from controller group 8, it is ensured that

D1/n1=D2/n2=D3/n3=D4/n4=D5/n5 (20)

Specifically, the ocean controllable electromagnetic discharger in the present embodiment also includes that pulse width is adjusted Device PWM group processed；Master controller 7 is adjusted with pulse width from the outfan of controller respectively with each Each pulse-width modulator PWM input in device PWM group processed connects；Each pulse width is adjusted Device PWM outfan processed is connected with the drive end of each half-bridge circuit in combined semi bridge circuit 4, Drive the switching tube of each half-bridge circuit in combined semi bridge circuit 4.

Specifically, the pulse-width modulator PWM group in the present embodiment includes: the first pulse Width modulator PWM 9-1, the second pulse-width modulator PWM 9-2, the 3rd pulse width Manipulator PWM (not shown), the 4th pulse-width modulator PWM (do not show in figure Go out) and the 5th pulse-width modulator PWM 9-5.

It should be noted that the present embodiment does not limit the arteries and veins in pulse-width modulator PWM group Rushing the quantity of width modulator PWM, those skilled in the art can be according to combined semi bridge circuit 4 In the quantity of half-bridge circuit, the pulse width modulation in pulse-width modulated device PWM group Device PWM count amount is configured.

Specifically, the ocean controllable electromagnetic discharger in the present embodiment also includes emission source control Device 10；Emission source controller 10 is connected with emission source control station 1-2 on ship by optical fiber, receives The tranmitting frequency set in advance sent by emission source control station 1-2 on ship, it is achieved send out on described ship Penetrate the source control station 1-2 control to the tranmitting frequency in described underwater emission source 2.

The outfan of emission source controller 10 connects with the switching tube IGBT drive end of radiating circuit 6 Connect, control the tranmitting frequency of emission source.

Specifically, the tranmitting frequency that on ship, emission source control station 1-2 sends is to set the most in advance Fixed.

Specifically, as shown in Figure 4, the ocean controllable electromagnetic discharger in the present embodiment runs Concrete principle be:

(1) on ship, the ship power source 1-1 in device provides merit by cable to underwater emission source 2 Rate is 125kVA, and voltage is 3000V, frequency is the single-phase alternating current of 50Hz.

(2) blow-up to 3000V/50Hz of the single phase rectifier circuit 3 in underwater emission source 2 Stream power supply carries out rectifying and wave-filtering, it is thus achieved that voltage is the DC voltage of 4200V.

(3) 4200V DC source is through dividing equally acquisition five road 840V DC sources；Respectively to by The combined semi bridge circuit 4 of five road half-bridge circuit compositions is powered, and combined semi bridge circuit 4 uses Staggered actuation techniques becomes five tunnel frequencies to be 20KHz phase cross-over five road 840V DC inverters Single-phase alternating current, then dropped by the step-down transformer that no-load voltage ratio is 6:1 in five road half-bridge circuits Pressure, it is thus achieved that the low-voltage AC of five road 120V/20KHz phase cross-overs；Then five road high frequencies Parallel connection after low-voltage alternating-current electric rectification, after same LC wave filter 5 rectifying and wave-filtering, it is thus achieved that 100V Unidirectional current.

(5) unidirectional current of 100V is launched by radiating circuit 6, it is thus achieved that power is 100KW, Electric current is the bi-directional pulse current that the frequency of 1000A is controlled.

(6) on ship, emission source control station 1-2 passes through optical-fibre communications by emitting voltage and emission current Being transferred to emission source controller 10, emission source controller 10 will be received by SPI communication again Emitting voltage and emission current be transferred to master controller 7, on ship, emission source control station 1-2 passes through Tranmitting frequency set in advance is transferred to emission source controller 10 by optical-fibre communications, thus realizes ship The upper emission source control station 1-2 control to underwater emission source 2.Meanwhile, master controller 7 passes through The emitting voltage in underwater emission source 2, emission current are transferred to emission source controller by SPI communication 10, emission source controller 10 passes through optical fiber by the emitting voltage in underwater emission source 2, emission current It is transferred to emission source control station 1-2 on ship, it is achieved by emission source control station on ship with tranmitting frequency 1-2 monitors the tranmitting frequency in underwater emission source 2, emitting voltage and emission current in real time.

A kind of ocean controllable electromagnetic discharger that the present embodiment provides, controls emission source on ship Platform 1-2 is connected with underwater emission source 2, in real time the magnitude of voltage of display underwater emission source 2 return, electricity Flow valuve and tranmitting frequency value, it is achieved that monitor the running status in underwater emission source 2 in real time.

In the above-described embodiments, the switching tube in five road half-bridge circuits uses staggered actuation techniques, Detailed process is:

Five switching tubes S1, S3, S5, S7, S9 of same position in five road half-bridge circuits Driving pulse conduction phase differ 1/10 switch periods successively；Same, five road half-bridge circuits In the driving pulse of other five switching tubes S2, S4, S6, S8, S10 of same position lead Logical phase place differs 1/10 switch periods the most successively, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10 conduction phase is as shown in Figure 5.

The driving pulse phase place of every road half-bridge circuit intermeshes, it is achieved combined semi bridge circuit 4 Structure output crisscross parallel, and by sharing one group of filter inductance and filter capacitor filtering output, I.e. LC wave filter 5 so that output ripple current frequency multiplication, reduces and flows through filter inductance electric current Ripple amplitude, waveform is smoother, and five road half-bridge circuit output electric currents always export electric current after in parallel Oscillogram is as shown in Figure 6.

It should be noted that use staggered driving by the switching tube in combined semi bridge circuit 4 Dynamic technology, improves the pulsation of current frequency of the outfan of combined semi bridge circuit 4, significantly Have compressed volume and the numerical value of filter inductance, reduce the pulsation of current amplitude flowing through filter inductance, The current waveform that combined semi bridge circuit 4 is exported is more smooth.

The staggered actuation techniques used in the present embodiment so that the LC wave filter 5 of design output Volume reduce, reduce loss.

One of ordinary skill in the art will appreciate that: various embodiments above is only in order to illustrate this practicality Novel technical scheme, is not intended to limit；Although it is new to this practicality with reference to foregoing embodiments Type has been described in detail, and it will be understood by those within the art that: it is the most permissible Technical scheme described in foregoing embodiments is modified, or to wherein part or complete Portion's technical characteristic carries out equivalent；And these amendments or replacement, do not make relevant art side The essence of case departs from this utility model claim limited range.

Claims (7)

1. an ocean controllable electromagnetic discharger, it is characterised in that including: on ship device and Underwater emission source；

On described ship, device includes ship power source, and described ship power source is with described underwater emission source even Connect, send the single phase industrial frequence more than 1000V or medium frequency alternating current to described underwater emission source；

Described underwater emission source receives the described single phase industrial frequence more than 1000V or medium frequency alternating current, And the described single phase industrial frequence more than 1000V or medium frequency alternating current are converted to high power low-frequency low pressure Alternating current, the bi-directional pulse current that tranmitting frequency is controlled.

Device the most according to claim 1, it is characterised in that on described ship, device also wraps Include emission source control station on ship；

On described ship, emission source control station is connected with described underwater emission source, monitors in real time and controls The emission state in described underwater emission source.

Device the most according to claim 1, it is characterised in that described underwater emission source, Including: rectification circuit, combined semi bridge circuit, LC wave filter and radiating circuit；

Described rectification circuit input end is connected with described ship power source, will receive described in be more than Single phase industrial frequence or the medium frequency alternating current of 1000V are converted to high voltage direct current；

The input series connection of each half-bridge circuit in described combined semi bridge circuit, and whole with described Current circuit outfan connects；The outfan of each half-bridge circuit in described combined semi bridge circuit is also It is connected with described LC filter input end after connection；Realize described high voltage direct current and be converted to low-pressure direct Stream electricity；

Described radiating circuit input is connected with described LC filter output；Described radiating circuit High power low-frequency low-voltage AC is obtained, controlled double of tranmitting frequency according to described low-voltage DC Polar impulse electric current.

Device the most according to claim 3, it is characterised in that described combination type half-bridge electricity Road includes main module circuit and from modular circuit；

Described main module circuit is any one road half-bridge circuit in described combined semi bridge circuit；

Described from modular circuit be described combined semi bridge circuit in addition to main module circuit half Bridge circuit.

Device the most according to claim 4, it is characterised in that described device also includes control Device processed；

Described controller includes a master controller and from controller group, and described master controller is institute State the controller of main module circuit, described from control group be the described controller from modular circuit；

Described master controller includes that Control of Voltage outer shroud and electric current control internal ring；

The output of the Voltage Feedback input of described master controller and described combined semi bridge circuit is also Interlink point voltage testing circuit connects, using sys node voltage as the voltage of described master controller Control the voltage feedback value of outer shroud；

The output electric current inspection of the current feedback input of described master controller and described main module circuit Slowdown monitoring circuit connects, and described main module circuit exports the electric current electric current control as described master controller The current feedback values of internal ring processed；Using the Control of Voltage outer shroud output valve of described master controller as institute The electric current stating master controller controls the given value of current value of internal ring；

Described from controller group, respectively include current regulator from controller, described each from controller Current feedback input and described combined semi bridge circuit in each from the output electric current of modular circuit Testing circuit connects, and exports electric current as the described electric current from controller using described from modular circuit Control the current feedback values of ring；

On described ship, emission source control station is connected with emission source controller by optical fiber, described transmitting Source controller is connected with described master controller by SPI communication, and described master controller is by reception On described ship emission source control station using output voltage set in advance and given value of current value as described The set-point of the Control of Voltage outer shroud of master controller, it is achieved on described ship, emission source control station is to water The emitting voltage of lower emission source and the control of emission current；

Described master controller by CAN respectively with described from controller group each from controller Connect；And the voltage control loop output valve in described master controller is transferred to by CAN Described respectively from controller, as the given value of current value of described each current regulator from controller.

Device the most according to claim 5, it is characterised in that described device also includes arteries and veins Rush width modulator PWM group；

Described master controller and described respectively adjust with described pulse width respectively from the outfan of controller In device PWM group processed, each pulse-width modulator PWM input connects；

Described each pulse-width modulator PWM outfan is each with described combined semi bridge circuit The drive end of half-bridge circuit connects, and drives opening of each half-bridge circuit in described combined semi bridge circuit Guan Guan.

Device the most according to claim 2, it is characterised in that described device also includes sending out Penetrate source controller；

Described emission source controller is connected with described emission source control station by optical fiber, receives described The tranmitting frequency set in advance that on ship, emission source control station sends, described emission source controller Outfan is connected with the switching tube IGBT drive end of described radiating circuit, it is achieved launch on described ship The control to the tranmitting frequency in described underwater emission source of the source control station.