CN104578819B - Underwater exploration intermediate-frequency deck power source and electromagnetic exploration system - Google Patents
Underwater exploration intermediate-frequency deck power source and electromagnetic exploration system Download PDFInfo
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- CN104578819B CN104578819B CN201410802530.8A CN201410802530A CN104578819B CN 104578819 B CN104578819 B CN 104578819B CN 201410802530 A CN201410802530 A CN 201410802530A CN 104578819 B CN104578819 B CN 104578819B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
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- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
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- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an underwater exploration intermediate-frequency deck power source and an electromagnetic exploration system. The underwater exploration intermediate-frequency deck power source comprises a rectifying and filtering unit, a power inversion unit, an SPWM wave synthesis unit, a boosting filtering unit, a main control unit, a GPS unit and a water circulation heat dissipation unit, wherein the power inversion unit is connected to the rectifying and filtering unit and the SPWM wave synthesis unit; the main control unit comprises a main control chip used for setting zero phases for modulating waves and changing frequency voltage of the modulating waves according to a GPS pulse per second, a sine wave generating circuit used for generating modulating waves according to the GPS pulse per second and a frequency circuit, and a triangular wave generating circuit used for generating carrier waves according to the frequency circuit; the SPWM wave synthesis unit is used for outputting SPWM waves according to the modulating waves and the carrier waves; the power inversion unit is used for controlling on-off of power devices according to the SPWM waves; the boosting filtering unit is connected to the power inversion unit and the output end of the power inversion unit is used as a power source output end; the water circulation heat dissipation unit is used for heat dissipation of the power inversion unit.
Description
Technical field
The present invention relates to deep water technical field of sea exploration, more particularly to a kind of underwater exploration intermediate frequency deck power supply and electromagnetism
Exploration system.
Background technology
In recent years, greatly developing with offshore oil mineral resources exploration, various Electromagnetism of Earthquake exploring equipments are also obtained
Broad development, but deep water seafari development is relatively slow, is mainly limited by exploring equipment.It is this in order to break
Bottleneck, have developed deep water controllable source electromagnetic survey.
When deep water controllable source is explored, under water high-power operation (60KW) of the emission source in 3 to 4 kms.The first for using at present
Plate power very little (within 50KW), under water inversion can not produce high current, voltage also than relatively low (below 2800V),
Service cable loss is big, and output frequency is 50Hz or 60Hz so that the step-down transformer volume of inversion under water is big, difficulty of processing
Greatly, cost is big；And the radiating effect of deck power supply is poor.
If being that underwater emission machine is powered with common 380VAC, the 50Hz on ship, the power being lost on the cable of 5 kms will
The power of subsea inverter is far longer than, and the requirement to service cable is very high, and resistance can not be too big.Fixed voltage is supplied to
In subsea inverter so that other equipment design difficulty of processing under water is very big.
The content of the invention
The invention provides a kind of underwater exploration intermediate frequency deck power supply and electromagnetic prospecting system, at least to solve prior art
In controllable source under water power supply power is little, the problem that voltage is low, frequency is low and cable loss is big.
According to an aspect of the invention, there is provided a kind of underwater exploration intermediate frequency deck power supply, intermediate frequency deck power supply
Including：Rectification filtering unit, power inverting unit, Sinusoidal Pulse Width Modulation (Sinusoidal Pulse Width
Modulation, referred to as SPWM) ripple synthesis unit, boosting filter unit, main control unit, global positioning system (Global
Positioning System, referred to as GPS) unit and water circulation heat-sink unit；Wherein, the input of the rectification filtering unit
End is connected to the output end of generator on ship；The input of the power inverting unit is respectively connecting to the rectification filtering unit
Output end and the SPWM ripples synthesis unit output end, the input of the SPWM ripples synthesis unit is connected to the master control
Unit, the main control unit is connected to the GPS unit；The main control unit includes：Main control chip, frequency circuit, sine wave
Generative circuit and triangular wave generating circuit；The main control chip, is connected to the GPS unit and the frequency circuit, for root
The zero phase of the given modulating wave of GPS second pulse produced according to the GPS unit, and the frequency and voltage magnitude for changing modulating wave
To control the frequency and width of SPWM ripples；The sinusoidal wave generation circuit, is connected to the frequency circuit, for according to described
GPS second pulse and the frequency circuit generate the sine wave of zero phase and the first preset frequency of the GPS second impulsive synchronization,
As modulating wave, wherein, 1 can be eliminated by first preset frequency；The triangular wave generating circuit, is connected to the frequency electricity
Road, the isosceles triangle wave of the preset frequency of second frequency signal generation second for being sent according to the frequency circuit, as load
Ripple；The SPWM ripples synthesis unit is used to synthesizing and exporting the SPWM ripples according to the modulating wave and the carrier wave；The work(
Rate inversion unit is used to control the break-make of its power device according to the SPWM ripples, to export predeterminated frequency and predeterminated voltage just
String signal；The input of the boosting filter unit is connected to the output end of the power inverting unit, and the boosting filtering is single
Output end of the output end of unit as intermediate frequency deck power supply；The water circulation heat-sink unit connects with the power inverting unit
Connect, for radiating for the power inverting unit.
In one embodiment, the SPWM ripples synthesis unit includes：SPWM ripple combiner circuits, drive waveform output circuit
And feedback control circuit；Wherein, the SPWM ripples combiner circuit, is respectively connecting to the sinusoidal wave generation circuit and the triangle
Ripple generative circuit, for relatively more described modulating wave and the carrier wave, determines inverse according to the modulating wave and the intersection point of the carrier wave
Become the pulse train that bridge exports phase voltage, as the SPWM ripples；The drive waveform output circuit, is connected to the SPWM ripples
Combiner circuit, for exporting the SPWM ripples；The feedback control circuit, be connected to the output end of intermediate frequency deck power supply with
The main control chip, for the modulating wave according to the output voltage real-time regulation of intermediate frequency deck power supply.
In one embodiment, the deck power supply also includes：Protection circuit, the input of the protection circuit is connected to
The output end of the power inverting unit, the output end of the protection circuit is connected to the input of the power inverting unit.
In one embodiment, the water circulation heat-sink unit includes：Tank, circulating water pipe, circulating pump, heat sink and wind
Fan；Wherein, built with coolant, the inboard wall of cistern is provided with sensor to the tank, and the sensor is used to detect the water
The water level of coolant in groove；The circulating water pipe is connected with the tank；The circulating pump, is arranged on the circulating water pipe
On, circulate in the circulating water pipe for controlling the coolant；The power inverting unit is arranged on the radiating
On plate, components and parts S-type arrangement of the circulating water pipe on the heat sink around the power inverting unit；Positioned at institute
The S-type arrangement of circulating water pipe of position of fan is stated, radiator is constituted, the fan is dried against the radiator.
In one embodiment, intermediate frequency deck power supply also includes：Remote controllers, are connected to the main control chip,
For exchanging signal with the main control chip, the running parameter of intermediate frequency deck power supply and long-range is arranged according to the signal
Control the startup of intermediate frequency deck power supply and close；It is additionally operable to receive the intermediate frequency deck power supply that the main control chip sends
Current operating parameters, and detect the shape of intermediate frequency deck power supply according to default running parameter and the current operating parameters
Whether state is normal.
In one embodiment, the power inverting unit includes：At least one H bridge insulated gate bipolar transistors
(Insulated Gate Bipolar Transistor, referred to as IGBT) and at least one full-wave rectifier tube.
According to another aspect of the present invention, there is provided a kind of electromagnetic prospecting system, including：Intermediate frequency deck power supply, cable
Controllable source under water, wherein, intermediate frequency deck power supply is the underwater exploration intermediate frequency deck electricity described in any of the above-described embodiment
Source, intermediate frequency deck power supply is arranged aboard ship, is connected with the controllable source under water by the cable, is described controllable under water
Source powers.
By the underwater exploration intermediate frequency deck power supply and electromagnetic prospecting system of the present invention, using GPS second pulse line phase is entered
Synchronously and using SPWM technologies, the sinusoidal signal of predeterminated frequency (0～400Hz) and predeterminated voltage (0～400V) is obtained, then
Through boosting, the power supply output of high pressure intermediate frequency is obtained.Intermediate frequency power supply system causes underwater emission machine weight, volume significantly to reduce.
High voltage supply causes the loss on service cable to greatly reduce, therefore, the voltage for reaching high-power deep water controllable source has risen
Height, and then high current (such as 1000A) can be produced, smoothly realize great-power electromagnetic exploration operation.In addition, being radiated using water circulation
Radiated to produce the more power inverting unit of heat, good heat dissipation effect, inversion efficiency is high, and then improves the work of power supply
Make efficiency；And heat-sink unit small volume, and then the volume of whole intermediate frequency deck power supply is also less.Therefore, using the intermediate frequency deck
Power supply, is possibly realized controllable source emitter miniaturization under water, and the voltage of power supply, frequency can arbitrarily be arranged in the range of, should
Power supply can connect various inversion emission systems, and the flexibility for using is very strong.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description does not constitute limitation of the invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the underwater exploration intermediate frequency deck power supply of one embodiment of the invention；
Fig. 2 is the structural representation of the underwater exploration intermediate frequency deck power supply of another embodiment of the present invention；
Fig. 3 is the waveform diagram of the SPWM technologies of the embodiment of the present invention；
Fig. 4 is the structural representation of the water circulation heat-sink unit of the embodiment of the present invention；
Fig. 5 is the structural representation of the underwater exploration intermediate frequency deck power supply of further embodiment of this invention；
Fig. 6 is the schematic diagram of the drive waveform output circuit of the embodiment of the present invention；
Fig. 7 is the circuit diagram of the power inverting unit of the embodiment of the present invention；
Fig. 8 be the embodiment of the present invention boosting filter unit in filtering part circuit diagram；
Fig. 9 is the circuit diagram of the intermediate frequency deck power supply of the embodiment of the present invention；
Figure 10 is the structural representation of the electromagnetic prospecting system of the embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground description, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.Based on this
Inventive embodiment, the every other enforcement that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to protection scope of the present invention.
For current deep water controllable source electromagnetic survey emission source deck power supply power it is little, voltage is low, frequency is low, scattered
The problems such as thermal effect difference, embodiments provide a kind of underwater exploration intermediate frequency deck power supply (AC-DC-AC), it is adaptable to big
The power supply of power deep water controllable source, is that the realization of deep water controllable source great-power electromagnetic exploration lays a solid foundation.
Fig. 1 is the structural representation of the underwater exploration intermediate frequency deck power supply of the embodiment of the present invention, as shown in figure 1, intermediate frequency first
Plate power supply includes：Rectification filtering unit 10, power inverting unit 20, SPWM ripples synthesis unit 30, boosting filter unit 40, master control
Unit 50, GPS unit 60 and water circulation heat-sink unit 70.Its structure is described in detail below.
The input of rectification filtering unit 10 is connected to the output end of generator 11 on ship；The input of power inverting unit 20
End is respectively connecting to the output end of rectification filtering unit 10 and the output end of SPWM ripples synthesis unit 30, SPWM ripples synthesis unit 30
Input be connected to main control unit 50, main control unit 50 is connected to GPS unit 60；The input connection of boosting filter unit 40
To the output end of power inverting unit 20, the output end of the output end of the filter unit 40 that boosts as intermediate frequency deck power supply；Water is followed
Ring heat-sink unit 70 is connected with power inverting unit 20.
Rectification filtering unit 10 is mainly used in the 380V to the output of generator on ship 11ACOr 220VAC(frequency be 50Hz or
Signal 60Hz) carries out rectifying and wave-filtering, and AC signal is converted to into direct current signal, and filters harmonic wave, so as not to affect ship on other
The electricity consumption of equipment.
Main control unit 50 includes：Main control chip 51 (can be CPU), frequency circuit 52, sinusoidal wave generation circuit 53 and three
Angle ripple generative circuit 54；Wherein, main control chip 51, are connected to GPS unit 60 and frequency circuit 52, for according to GPS unit 60
The zero phase of the given modulating wave of the GPS second pulse of generation, and change the frequency and voltage magnitude of modulating wave to control SPWM ripples
Frequency and width；Sinusoidal wave generation circuit 53, is connected to frequency circuit 52, for according to GPS second pulse and frequency circuit
The sine wave of the first preset frequency of the 52 first frequency signal generation zero phases for sending and GPS second impulsive synchronization, as modulation
Ripple, wherein, 1 can be eliminated that (i.e. the cycle is integer or finite decimal, and for example, the first preset frequency is by the first preset frequency
400Hz, 1 can be eliminated by 400, and the cycle for obtaining is 2.5ms)；Triangular wave generating circuit 54, is connected to frequency circuit 52, uses
In the isosceles triangle wave of the preset frequency of second frequency signal generation second sent according to frequency circuit 52, as carrier wave.Change
The frequency and amplitude of modulating wave, it is possible to the frequency and width of the SPWM ripples that change is obtained by SPWM technologies, and then control work(
The frequency and amplitude of the sinusoidal signal of the output of rate inversion unit 20, that is, obtained the sinusoidal signal of preset frequency and voltage.
SPWM ripples synthesis unit 30, is connected to sinusoidal wave generation circuit 53 and triangular wave generating circuit 54, for according to tune
Ripple processed and carrier wave synthesize and export SPWM ripples.
Power inverting unit 20 is used to control the break-make of its power device according to SPWM ripples, to export predeterminated frequency and preset
The sinusoidal signal of voltage.Herein, predeterminated frequency is intermediate frequency, and the frequency of general intermediate frequency power supply is 300Hz～10kHz, it is contemplated that water
Lower controllable source emitter volume of transformer and practical situations, can be set as 400Hz in the present embodiment, predeterminated voltage is
400V.Power inverting unit 20 can include：At least one H bridges IGBT and at least one full-wave rectifier tube, i.e. power device are H
Bridge IGBT and full-wave rectifier tube.
Water circulation heat-sink unit 70 is used to be radiated for power inverting unit 20.
Boosting filter unit 40 is mainly used in boosting the signal that inversion is obtained and is filtered harmonic wave, for example, passes through
Voltage is raised to 10 times by step-up transformer, obtains the high pressure of 4000V, to realize that medium-frequency high-voltage is powered.Output is after inversion
Fundamental frequency is the sine wave of 400HZ, it is necessary to be filtered, because the harmonic energy of this waveform is very strong, simple inductance capacitance is very
Difficulty is filtered, and can be filtered using powerful inclined sense transformer and electric capacity.
By the above embodiment of the present invention, Phase synchronization is carried out and using SPWM technologies using GPS second pulse, obtain pre-
If the sinusoidal signal of frequency (0～400Hz) and predeterminated voltage (0～400V), then through boosting, the power supply of high pressure intermediate frequency is obtained
Output.Intermediate frequency power supply system causes underwater emission machine weight, volume significantly to reduce.High voltage supply causes the damage on service cable
Consumption greatly reduces, therefore, the voltage for reaching high-power deep water controllable source has been raised, and then can produce high current (such as 1000A
It is even more big), smoothly realize great-power electromagnetic exploration operation.In addition, using the water circulation radiating power more to produce heat
Inversion unit is radiated, good heat dissipation effect, and inversion efficiency is high, and then improves the operating efficiency of power supply；And heat-sink unit body
Product is little, and then the volume of whole intermediate frequency deck power supply is also less.Therefore, using the intermediate frequency deck power supply, send out controllable source under water
Penetrate machine miniaturization to be possibly realized, and the voltage of power supply, frequency can arbitrarily be arranged in the range of, the power supply can connect various inversions
Emission system, the flexibility for using is very strong.
Specifically, the output voltage of intermediate frequency deck power supply is higher, for example, can reach 4000V, due to controllable source transmitting under water
The working power of machine is generally 60kW, reaches big in the voltage ratio prior art of emitter, then electric current is reduced by, therefore in cable
Loss on (being about 4 to 5 kms) accordingly reduces, so as to also reduce requirement and the cost of cable.Intermediate frequency deck power supply it is defeated
Go out Frequency Design into intermediate frequency, for example, can reach 400Hz, because the transformer coil number of turn and frequency are inversely proportional to, frequency is than existing skill
It is big in art, therefore, under water the core section product of controllable source emitter transformer is less, and volume of transformer is less, and then whole water
The volume weight of lower controllable source emitter is less, beneficial to dragging operation under water.Actually measure the intermediate frequency deck power supply that obtains
Power reaches 200kW, then intermediate frequency deck electric power outputting current is 50A.Based on the parameter of above-mentioned intermediate frequency deck power supply, 4000 meters under water
The electric current of controllable source emitter can reach 1000A, and (arrival transmitter voltage is 50V, and resistance is 50m Ω.If with 380V or
220V powers, then Jing cables are lost in a large number, and the voltage for reaching emitter is not up to 50V), even more high current.As can be seen here,
Relative to prior art, the intermediate frequency deck power supply of the embodiment of the present invention be capable of achieving a powerful frequency conversion (50Hz is become into 0～
400Hz), transformation (380V or 220V are become into 1000～4000V).The output voltage and frequency of intermediate frequency deck power supply can be at it
Corresponding interval interior arbitrarily setting.
Output voltage range after the rectified inversion of 380V exchange inputs is 0～400V.In order to improve the reliability of system,
Reduces cost, amplifies in final stage.If amplified in prime exchange, system cost can be greatly improved, and reliability also can be reduced.
To carry out after the rectified filtering of 380VAC or 220VAC (50Hz or 60Hz) power supply output of generator on ship inverse
Become (by Sine Pulse Width Modulation).SPWM technologies become amplitude phase with shut-off using the conducting of power device DC voltage
Deng and width and carries out variable voltage variable frequency by the sequence of voltage pulses of sinusoidal rule change by controlling pulse width and cycle, it is real
Then existing 0～400V voltages, 400Hz frequencies are capable of achieving the high voltage of 0～4000V, 400Hz by 10 times of transformer boosts
Output.
As shown in Fig. 2 in one embodiment, SPWM ripples synthesis unit 30 can include：SPWM ripples combiner circuit 31, ripple
Shape drives output circuit 32 and feedback control circuit 33；Wherein, SPWM ripples combiner circuit 31, is respectively connecting to sine wave and generates electricity
Road 53 and triangular wave generating circuit 54, for comparing modulating wave and carrier wave, according to the intersection point of modulating wave and carrier wave inverter bridge are determined
The pulse train of output phase voltage, (specifically can be realized, sine wave and carrier wave are used as comparator as SPWM ripples by comparator
Two input, then comparator output SPWM ripples)；Drive waveform output circuit 32, is connected to SPWM ripples combiner circuit 31, is used for
Output SPWM ripples；Feedback control circuit 33, is connected to the output end and main control chip 51 of intermediate frequency deck power supply, for according to intermediate frequency
The output voltage real-time regulation modulating wave of deck power supply.Feedback control circuit 33 can be PID/feedback control, and main control unit 50 can
To produce sine wave according to the feedback regulation of feedback control circuit 33, so that waveform reaches requirement.
In the present embodiment, using SPWM ripple pulse modulation technologies, after system electrification, when main control unit 50 detects GPS second
After pulse, sinusoidal modulation wave, and ambipolar isosceles triangle wave (carrier wave) are produced.Modulating wave determines inverse with the intersection point of carrier wave
Become the pulse train that bridge exports phase voltage, as SPWM ripples, its cycle is decided by carrier frequency.SPWM ripples are controlled Jing after driving
The power device of power inverting unit 20 (such as inverter bridge) presses SPWM sequences and replaces break-make.Inverter bridge operationally, same bridge arm
Two inversion devices be always alternately turned on and turned off by the rule of phase voltage pulse train, high voltage pulse train filtering after produce
Raw sinusoidal voltage.Using sine wave as modulating wave and isosceles triangle wave as carrier wave, modulation result is reliable and stable.Through
The SPWM ripples produced after relatively demodulating control inversion after driving, produce high-voltage signal.
As shown in figure 3, A represents modulated triangular wave, B represents sine wave to waveform diagram (its frequency can be 400Hz).
The frequency of SPWM ripples depends on carrier wave, and its width depends on the amplitude of sine wave, can be from Fig. 3 by the friendship of triangular wave and sine wave
The vertical dotted line that point is drawn is found out.By the width (maintaining the relative width of each pulse) for changing SPWM ripples, so that it may change power supply
The voltage amplitude of output, while maintaining power input frequency constant.(width ratio is maintained by changing the cycle of SPWM ripples not
Become), so that it may change the output frequency of power supply, the output voltage of power supply is constant.Main control unit 50 is continuous using GPS second pulse signal
The zero phase of given sine wave, it is ensured that sine wave and synchronous pps pulse per second signal same-phase.
In one embodiment, deck power supply can also include：Protection circuit, the input of protection circuit is connected to power
The output end of inversion unit 20, the output end of protection circuit is connected to the input of power inverting unit 20.Protection circuit is used for
Overcurrent protection, overvoltage protection etc. are provided to power inverting unit 20.
It is its power supply in addition, can also have power supply (5V or 12V) in SPWM ripples synthesis unit 30.
As shown in figure 4, in one embodiment, water circulation heat-sink unit 70 includes：Tank 71, circulating water pipe 72, circulation
Pump 73, heat sink 74 and fan 75；Wherein, built with coolant, the inwall of tank 71 is provided with sensor 711, sensor to tank 71
711 are used to detect the water level of coolant in tank 71；Circulating water pipe 72 is connected with tank 71；Circulating pump 73, is arranged on circulation
On water pipe 72, circulate in circulating water pipe 72 for controlling coolant；Power inverting unit 20 is arranged on heat sink 74,
Components and parts S-type arrangement of the circulating water pipe 72 on heat sink 74 around power inverting unit 20；Positioned at 75, fan
The S-type arrangement of circulating water pipe 72 put, constitutes radiator, and fan 75 is dried against radiator.
In the present embodiment, due to the reverse frequency of intermediate frequency deck power supply, (power device is logical i.e. in power inverting unit 20
Disconnected frequency) it is very high (8kHz), heating is big, and system power dissipation reaches 10kW, if using wind-cooling heat dissipating (sufficiently bulky), being unfavorable for stream
The operation of dynamic property.Radiated using water circulation in the present embodiment, volume can be reduced more than one times, and then can ensure that whole intermediate frequency deck electricity
The volume in source will not be excessive.In actual applications, the size of whole heat-sink unit only has 760mm*360mm*600mm, and power supply is full
When carrying work, temperature is below 50 DEG C.In the present embodiment, sensor 711 detects the water level of coolant in tank 71, if water
Position is too low, alarm can be sent, to add coolant.In addition, circulating water pipe 72 is S-type on heat sink 74 and at fan 75
Arrangement, is more beneficial for radiating.
In actual applications, groove can be set near components and parts on heat sink 74, by following positioned at heat sink 74
On the insert plate of ring water pipe 72, it is also possible to which the part circulating water pipe 72 is pasted onto on heat sink 74 near components and parts, it is to avoid circulation
Water pipe 72 is separated with heat sink 74, affects radiating effect.
As shown in figure 5, in one embodiment, intermediate frequency deck power supply also includes：Remote controllers 80, are connected to master control core
Piece 51, for exchanging signal with main control chip 51, according to signal the running parameter and remotely control of intermediate frequency deck power supply is arranged
The startup of intermediate frequency deck power supply and closing；It is additionally operable to receive the work at present ginseng of the intermediate frequency deck power supply that main control chip 51 sends
Number, and it is whether normal according to the state of default running parameter and current operating parameters detection intermediate frequency deck power supply.
It is dangerous in the present embodiment, it is contemplated that electric power output voltage is higher, therefore, remote control function is increased, side
Just the startup closing and the monitoring of power supply status of power supply.Main control chip 51 in main control unit 50 can by RS485 mouths with it is remote
Range controller 80 connects and exchanges signal.The running parameter being provided with can include maximum voltage, maximum current etc., obtain in real time
The parameters such as power taking source current voltage, electric current, whether to judge power supply in normal operating condition, so as to on-call maintenance, it is to avoid send out
It is raw dangerous.
Some simple examples of circuits given below, but the present invention is not limited to this, as long as can realize that drive waveform is defeated
Go out, power inverting, the circuit of the functions such as filtering of boosting belong to protection scope of the present invention.Fig. 6 is the ripple of the embodiment of the present invention
Shape drives the schematic diagram of output circuit, and Fig. 7 is the circuit diagram of the power inverting unit of the embodiment of the present invention, and Fig. 8 is this
The circuit diagram of filtering part in the boosting filter unit of bright embodiment, Fig. 9 is the intermediate frequency deck power supply of the embodiment of the present invention
Circuit diagram.In figure 6, SPWM ripples are exported after the driving of the devices such as light-coupled isolation, you can control inversion.In Fig. 7
In, two inversion devices of same bridge arm are always alternately turned on according to the rule of phase voltage pulse train in power inverting unit
And shut-off, for example, two upper and lower devices of A points in Fig. 7.In fig. 8, using powerful inclined sense transformer and electric capacity to SPWM
Ripple is filtered, it is ensured that filter effect.Fig. 9 is a simple circuit diagram, 380V or 220V voltages are through rectification
Filtering, SPWM ripples drive under carry out power inverting, then after filtering with boosting (1:10) 1500～4000V, frequency, are reached
For 400Hz, so as to realize that high pressure intermediate frequency is exported.
The embodiment of the present invention additionally provides a kind of electromagnetic prospecting system, and as shown in Figure 10, the electromagnetic prospecting system includes：In
Frequency deck power supply 100, cable 200 and under water controllable source 300, wherein, intermediate frequency deck power supply 100 is retouched in any of the above-described embodiment
The underwater exploration intermediate frequency deck power supply stated, intermediate frequency deck power supply 100 is arranged aboard ship, by cable 200 and controllable source 300 under water
Connection, is that under water controllable source 300 is powered.
On ship generator output 380V or 220V three-phases or single-phase alternating current is soft open after, filtered rectification carries out full-bridge
Inversion, then filtered and transformer carries out 10 times of amplifications, you can produce 1000～4000V, the sinewave output of 400Hz.Should
Power supply is powered by cable to the controllable source under water of 4～5 kms under water, and distortion is less than 3%.Power supply output HIGH voltage, in cable
On loss reduce, then can ensure that the voltage for reaching controllable source emitter under water is sufficiently large, to produce high current, carry out high-power
Underwater operation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.And, the specific features of description, structure, material or feature can be any
One or more embodiments or example in combine in an appropriate manner.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, the guarantor being not intended to limit the present invention
Shield scope, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included in this
Within the protection domain of invention.
Claims (6)
1. a kind of underwater exploration intermediate frequency deck power supply, it is characterised in that intermediate frequency deck power supply includes：Rectification filtering unit,
Power inverting unit, SPWM ripple synthesis units, boosting filter unit, main control unit, GPS unit and water circulation heat-sink unit；
Wherein, the input of the rectification filtering unit is connected to the output end of generator on ship；
The input of the power inverting unit is respectively connecting to the output end of the rectification filtering unit and the SPWM ripples are closed
Into the output end of unit, the input of the SPWM ripples synthesis unit is connected to the main control unit, the main control unit connection
To the GPS unit；
The main control unit includes：Main control chip, frequency circuit, sinusoidal wave generation circuit and triangular wave generating circuit；The master
Control chip, is connected to the GPS unit and the frequency circuit, and the GPS second pulse for being produced according to the GPS unit gives
The zero phase of modulating wave, and change the frequency and voltage magnitude of modulating wave to control the frequency and width of SPWM ripples；It is described just
String ripple generative circuit, is connected to the frequency circuit, for sent according to the GPS second pulse and the frequency circuit the
One frequency signal generates the sine wave of zero phase and the first preset frequency of the GPS second impulsive synchronization, as modulating wave, its
In, 1 can be eliminated by first preset frequency；The triangular wave generating circuit, is connected to the frequency circuit, for according to institute
The isosceles triangle wave of the preset frequency of second frequency signal generation second of frequency circuit transmission is stated, as carrier wave；
The SPWM ripples synthesis unit is used to synthesizing and exporting the SPWM ripples according to the modulating wave and the carrier wave；
The power inverting unit is used to control the break-make of its power device according to the SPWM ripples, to export predeterminated frequency and pre-
If the sinusoidal signal of voltage；
The input of the boosting filter unit is connected to the output end of the power inverting unit, the boosting filter unit
Output end of the output end as intermediate frequency deck power supply；
The water circulation heat-sink unit is connected with the power inverting unit, for radiating for the power inverting unit.
2. underwater exploration intermediate frequency deck power supply according to claim 1, it is characterised in that the SPWM ripples synthesis unit bag
Include：SPWM ripple combiner circuits, drive waveform output circuit and feedback control circuit；
Wherein, the SPWM ripples combiner circuit, is respectively connecting to the sinusoidal wave generation circuit and the triangular wave generating circuit,
For relatively more described modulating wave and the carrier wave, inverter bridge output mutually electricity is determined according to the modulating wave and the intersection point of the carrier wave
The pulse train of pressure, as the SPWM ripples；
The drive waveform output circuit, is connected to the SPWM ripples combiner circuit, for exporting the SPWM ripples；
The feedback control circuit, is connected to the output end and the main control chip of intermediate frequency deck power supply, for according to institute
State modulating wave described in the output voltage real-time regulation of intermediate frequency deck power supply.
3. underwater exploration intermediate frequency deck power supply according to claim 1, it is characterised in that the deck power supply also includes：
Protection circuit, the input of the protection circuit is connected to the output end of the power inverting unit, the protection circuit it is defeated
Go out the input that end is connected to the power inverting unit.
4. underwater exploration intermediate frequency deck power supply according to claim 1, it is characterised in that the water circulation heat-sink unit bag
Include：Tank, circulating water pipe, circulating pump, heat sink and fan；
Wherein, built with coolant, the inboard wall of cistern is provided with sensor to the tank, and the sensor is used to detect the water
The water level of coolant in groove；
The circulating water pipe is connected with the tank；
The circulating pump, is arranged on the circulating water pipe, for controlling coolant recycle stream in the circulating water pipe
It is dynamic；
The power inverting unit is arranged on the heat sink, and the circulating water pipe on the heat sink surrounds the work(
The S-type arrangement of components and parts of rate inversion unit；
Positioned at the S-type arrangement of the circulating water pipe of the position of fan, radiator is constituted, the fan blows against the radiator
Wind.
5. underwater exploration intermediate frequency deck power supply according to claim 1, it is characterised in that intermediate frequency deck power supply is also wrapped
Include：Remote controllers, are connected to the main control chip, for exchanging signal with the main control chip, are arranged according to the signal
The startup of the running parameter of intermediate frequency deck power supply and intermediate frequency deck power supply described in remotely control and closing；It is additionally operable to receive
The current operating parameters of the intermediate frequency deck power supply that the main control chip sends, and according to default running parameter and described work as
Whether the state of front running parameter detection intermediate frequency deck power supply is normal.
6. a kind of electromagnetic prospecting system, it is characterised in that include：Intermediate frequency deck power supply, cable and controllable source under water, wherein, institute
It is the underwater exploration intermediate frequency deck power supply any one of claim 1 to 5 to state intermediate frequency deck power supply, the intermediate frequency deck electricity
Source is arranged aboard ship, is connected with the controllable source under water by the cable, is that the controllable source under water is powered.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410802530.8A CN104578819B (en) | 2014-12-19 | 2014-12-19 | Underwater exploration intermediate-frequency deck power source and electromagnetic exploration system |
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| CN201410802530.8A CN104578819B (en) | 2014-12-19 | 2014-12-19 | Underwater exploration intermediate-frequency deck power source and electromagnetic exploration system |
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| CN104578819B true CN104578819B (en) | 2017-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105676050A (en) * | 2016-01-19 | 2016-06-15 | 大唐哈密风电开发有限公司 | Grounding conductor detection system and method |
| CN105680703A (en) * | 2016-03-16 | 2016-06-15 | 北京工业大学 | Marine-controlled electromagnetic emission device and control method thereof |
| CN108365762A (en) * | 2018-01-30 | 2018-08-03 | 安徽省金屹电源科技有限公司 | A kind of use in washing machine sterilizer power source special |
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