CN110800677A - Underwater invisible blocking net device with distributed high-power supply modules - Google Patents

Underwater invisible blocking net device with distributed high-power supply modules Download PDF

Info

Publication number
CN110800677A
CN110800677A CN201911201085.9A CN201911201085A CN110800677A CN 110800677 A CN110800677 A CN 110800677A CN 201911201085 A CN201911201085 A CN 201911201085A CN 110800677 A CN110800677 A CN 110800677A
Authority
CN
China
Prior art keywords
circuit
pulse
voltage
water surface
power supply
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911201085.9A
Other languages
Chinese (zh)
Other versions
CN110800677B (en
Inventor
欧阳晖
方芸
林莉
柳明
彭新
刘尚伟
魏华
张高明
雷阳
杜红彪
许磊
杨辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
719th Research Institute of CSIC
Original Assignee
719th Research Institute of CSIC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 719th Research Institute of CSIC filed Critical 719th Research Institute of CSIC
Priority to CN201911201085.9A priority Critical patent/CN110800677B/en
Publication of CN110800677A publication Critical patent/CN110800677A/en
Application granted granted Critical
Publication of CN110800677B publication Critical patent/CN110800677B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/003—Aquaria; Terraria
    • A01K63/006—Accessories for aquaria or terraria
    • 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
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
    • 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
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H02M3/3378—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current in a push-pull configuration of the parallel type
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Rectifiers (AREA)

Abstract

The invention relates to an underwater invisible barrier net device with distributed high-power supply modules, which comprises: the water surface pulse generator comprises a direct current power supply device, a water surface pulse generator, a conductor electrode and a water bottom pressure carrier, wherein the direct current power supply device is used for converting alternating current generated by commercial power or a generator into stable direct current required by the water surface pulse generator; the output end of the direct current power supply device is connected to the input end of the water surface pulse generator, and the water surface pulse generator is used for converting direct current generated by the direct current power supply device into high-voltage pulse with adjustable polarity, and driving the conductor electrode to form the pulse electronic blocking net. The water surface pulse generator adopts a distributed and high-power mode, so that the invisible blocking net device is simple and efficient, the safety of blocking organisms can be ensured, and meanwhile, uninterrupted power supply is realized.

Description

Underwater invisible blocking net device with distributed high-power supply modules
Technical Field
The invention relates to the technical field of power electronic engineering, in particular to an underwater invisible blocking net device of a distributed high-power supply module.
Background
In large water surface farms, nuclear power stations and other places, in order to realize effective interception of aquatic organisms or closed frogmans, nylon nets are traditionally used. However, the nylon net is large in assembling and disassembling construction amount, easy to adhere to aquatic organisms, capable of influencing water passing and normal ship traveling, needing frequent cleaning and maintenance, and large in influence on the surrounding water environment.
In recent years, the induction effect of living beings on electric fields is widely concerned by academic circles at home and abroad, and the induction effect and the yang-oriented effect of living beings under the condition of pulsed electric fields have certain universality. The traditional mode of inductance interception is with the steel cable to hang the metal pole stick, and this kind of mode adopts integral mounting means, need install the cement stake at bank and aquatic additional in advance, and the complicated cost of block dismouting is higher, and it is comparatively troublesome to maintain, has caused the destruction to the water environment.
There is a need for a barrier net assembly that is highly modular and capable of being deployed invisibly underwater.
The blocking device equipment circuit adopts 220V alternating current input, obtains several hundreds of volts to the high-voltage output of last kilovolt in a mode of step-up transformer and uncontrolled rectification, and because of the existence of power frequency transformer, makes power equipment's volume and weight great, and this places inconvenient scheduling problem to equipment fixing.
Therefore, the modular design designs the high-power pulse power supply device into a plurality of low-power water surface pulse generators, and has the advantages of simple structure, small volume, light weight, convenient installation and the like.
The traditional pulse fish blocking electric fence is powered in a ground centralized mode, namely a ground distributed water surface pulse generator converts AC220V mains supply into pulse voltage with the amplitude of 200-500V and adjustable frequency pulse width, and the pulse voltage is transmitted to an underwater fish blocking electric fence through a long cable. The reliability of the power supply mode is not high, when the agricultural power distribution network in the culture water area is powered off, the distributed water surface pulse generator cannot work, and an Uninterruptible Power Supply (UPS) is additionally arranged for avoiding fish escape caused by power loss of the fish blocking grid.
A large number of high-quality and low-cost AC 220V-DC 24V power supplies exist in the market, but no distributed water surface pulse generator for converting DC24V into DC 200-DC 1000V pulse output exists.
The distributed water surface pulse generator is used as a core device of the blocking network system, and has the main functions of providing pulse voltage for the electric fence, forming a pulse electric field between the pole bars of the electric fence, driving fishes, and simultaneously not influencing the passing of other sundries such as aquatic weeds and the like.
The traditional distributed water surface pulse generator is of a power frequency isolation type, and a secondary multi-tap power frequency transformer and an uncontrolled rectifying circuit are installed on the input side of the pulse power supply, so that pulse voltage output of multi-gear amplitude values is realized while electrical isolation is realized. The power supply has the advantages of low input side power factor and large harmonic content; the output voltage can not be automatically and continuously adjusted, and only can be manually adjusted in a stepping way. Particularly, the power frequency transformer is heavy in size, which seriously affects the power density and portability of the pulse power supply device and causes inconvenience in power supply transportation and installation.
Disclosure of Invention
In order to overcome the defects, the invention provides the invisible barrier net device, the barrier net is very simple to install and dismantle, convenient to maintain and repair, and capable of realizing module arrangement, and meanwhile, the invisible barrier net device is efficiently configured by adopting the high-power distributed water surface pulse generator.
Specifically, the present invention provides an underwater concealed barrier device with distributed high power supply modules, comprising: the device comprises a direct current power supply device, a water surface pulse generator, a conductor electrode and a water bottom pressure carrier;
the direct current power supply device is used for converting alternating current generated by commercial power or a generator into stable direct current required by the water surface pulse generator;
the output end of the direct current power supply device is connected to the input end of the water surface pulse generator, and the water surface pulse generator is used for converting direct current generated by the direct current power supply device into high-voltage pulses with adjustable polarities, and driving the conductor electrodes to form a pulse electronic blocking net;
a plurality of conductor electrodes form an electric grid;
the water surface pulse generators are multiple, and the output end of each water surface pulse generator is respectively connected with the positive electrode and the negative electrode of one electric grid;
the system also comprises a controller, a power bus and a communication bus;
the controller is in communication connection with the plurality of water surface pulse generators through a communication bus.
Furthermore, the conductor electrodes are communicated with the output end inside the water surface pulse generator through cables, one end of each conductor electrode is fixed on the shell of the water surface pulse generator, the other end of each conductor electrode is fixed on the shell of the underwater ballast body, the conductor electrodes form an electric grid, and one electric grid is connected with one water surface pulse generator and one underwater ballast body to form an invisible barrier net module together.
Further, the water surface pulse generator is hollow, and two ends of the water surface pulse generator are sealed, so that sufficient buoyancy can be provided;
the underwater pressing carrier is filled or bound with sand stones to realize underwater anchoring at the bottom of the invisible barrier net module;
the water surface pulse generator and the underwater pressure carrier both adopt insulator pipes, and the conductor electrode can be wound on the outer wall of the pipe.
Further, the controller is used for charging the plurality of water surface pulse generators in a time-sharing manner; when the water surface pulse generator is used independently, the fish blocking electric fence is arranged on the mobile equipment and is used as fish driving or catching equipment.
Furthermore, the direct current power supply device is provided with a protection circuit, has the functions of command downloading and state uploading, and is used for downloading commands to the plurality of water surface pulse generators and acquiring state information of the plurality of water surface pulse generators.
The water surface pulse generator is provided with an isolation booster circuit and a short-circuit protection circuit and is used for outputting reliable high-voltage pulses to the conductor electrode and simultaneously ensuring that the conductor electrode can continuously work without stopping when in short circuit.
The invisible net blocking modules are electrically connected with each other through watertight cables and matched waterproof joints
Furthermore, the front end of the water surface pulse generator is connected to the direct current power supply in parallel, and the fish blocking electric fence is fixedly installed and used as fish blocking equipment.
When the water surface pulse generator is used independently, the fish blocking electric fence is arranged on the mobile equipment and is used as fish driving or catching equipment. The water surface pulse generator is provided with a short-circuit current limiting module, and when the output short circuit occurs, the driving signal of the switching device is blocked. The electric fish blocking fence is in a modular design, and the number of electrodes in each section of the electric fish blocking fence is less than a preset value.
Further, the distributed fish blocking water surface pulse generator comprises: the input EMI circuit is connected to the two push-pull circuits with the inputs connected in parallel, and two switching tubes of the push-pull circuits work alternately to generate voltage pulses; the No. 1 push-pull circuit is connected to the No. 1 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 1 push-pull circuit are applied to the primary side of the No. 1 high-frequency isolation boosting transformer; the No. 2 push-pull circuit is connected to the No. 2 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 2 push-pull circuit are applied to the primary side of the No. 2 high-frequency isolation boosting transformer;
the secondary side of the No. 1 high-frequency isolation boosting transformer is connected to the No. 1 pulse rectifying circuit, and the boosted alternating-current voltage pulse is rectified to form a direct-current voltage pulse; the secondary side of the No. 2 high-frequency isolation boosting transformer is connected to the No. 2 pulse rectifying circuit, and the boosted alternating voltage pulse is rectified to form a direct voltage pulse; the No. 1 pulse rectifying circuit is connected to the No. 1 low-pass filter circuit, and the No. 1 low-pass filter circuit filters direct-current voltage pulses to form stable and smooth direct-current voltage; the No. 2 pulse rectifying circuit is connected to the No. 2 low-pass filter circuit, and the No. 2 low-pass filter circuit filters direct-current voltage pulses to form stable and smooth direct-current voltage; the positive pole of No. 1 low pass filter circuit is connected to the pulse generating circuit positive pole, the negative pole of No. 1 low pass filter circuit is connected to the No. 2 low pass filter circuit positive pole, the negative pole of No. 2 low pass filter circuit is connected to the pulse generating circuit negative pole to produce frequency, width adjustable voltage pulse.
Further, the distributed fish blocking water surface pulse generator, the input EMI circuit comprises a differential mode C1, a common mode inductor CM, a common mode capacitor C2 and C3; the push-pull circuit No. 1 comprises field effect transistors (MOSFETs) S1 and S2; the push-pull circuit No. 2 comprises field effect transistors (MOSFETs) S3 and S4; the No. 1 pulse rectifying circuit comprises zero recovery silicon carbide diodes D1-D4; the No. 2 pulse rectifying circuit comprises zero recovery silicon carbide diodes D5-D8; the No. 1 low-pass filter circuit comprises an output filter inductor L1 and an output filter capacitor C4, the No. 2 low-pass filter circuit comprises an output filter inductor L2 and an output filter capacitor C5, the pulse generation circuit comprises an insulated gate transistor S5, and the control unit is connected to the No. 1 push-pull circuit, the No. 2 push-pull circuit and the insulated gate transistor S5 of the pulse generation circuit through a driving circuit respectively.
Furthermore, two ends of a differential mode capacitor C1 of the input EMI filter are respectively connected to the positive electrode and the negative electrode of the dc input terminal, a 1 end of a common mode inductor CM of the input EMI filter is connected to the positive electrode of the differential mode capacitor C1, and a 2 end of the common mode inductor CM of the input EMI filter is connected to the negative electrode of the differential mode capacitor C1; the 3 end of the common mode inductor CM of the input EMI filter is connected with the 1 end of the common mode capacitor C2, the 4 end of the common mode inductor CM of the input EMI filter is connected with the 2 end of the common mode capacitor C3, and the 2 ends of the common mode capacitor C2 and the 1 end of the common mode capacitor C3 are connected together and then connected to the ground.
Further, the drain of the MOSFET S1 of the push-pull circuit No. 1 is connected to the terminal 1 of the high-frequency step-up transformer No. 1, the source of the MOSFET S1 of the push-pull circuit No. 1 is connected to the drain of the MOSFET S2 of the push-pull circuit No. 1 and the terminal 2 of the C3 of the input EMI filter, and the source of the MOSFET S2 of the push-pull circuit No. 1 is connected to the terminal 3 of the high-frequency step-up transformer No. 1;
further, the drain of the MOSFET S3 of the push-pull circuit No. 2 is connected to the terminal 1 of the high-frequency step-up transformer No. 2, the source of the MOSFET S3 of the push-pull circuit No. 2 is connected to the drain of the MOSFET S4 of the push-pull circuit No. 2 and the terminal 2 of the C3 of the input EMI filter, and the source of the MOSFET S4 of the push-pull circuit No. 2 is connected to the terminal 3 of the high-frequency step-up transformer No. 2;
further, the 2 terminal of the No. 1 high frequency step-up transformer is connected to the 1 terminal of the input EMI filter C2, the 2 terminal of the No. 2 high frequency step-up transformer is connected to the 1 terminal of the input EMI filter C2,
further, the 4 ends of the No. 1 high-frequency step-up transformer are connected to the anode of D1 and the cathode of D2 of the pulse rectification circuit, and the 5 ends of the No. 1 high-frequency step-up transformer are connected to the anode of D3 and the cathode of D4 of the pulse rectification circuit No. 1. The 4 ends of the No. 2 high-frequency step-up transformer are connected to the anode of D5 and the cathode of D6 of the pulse rectification circuit, the 5 ends of the No. 2 high-frequency step-up transformer are connected to the anode of D7 and the cathode of D8 of the pulse rectification circuit,
further, the 1 end of the L1 of the No. 1 low-pass filter circuit is connected to the cathodes of the D1 and D3 of the No. 1 pulse rectification circuit, the 2 end of the L1 of the No. 1 low-pass filter circuit is connected to the 1 end of the C4 of the No. 1 low-pass filter circuit, and the 2 end of the C4 of the No. 1 low-pass filter circuit is connected to the anodes of the D2 and D4 of the No. 1 pulse rectification circuit. The 1 end of the L2 of the No. 2 low-pass filter circuit is connected to the cathodes of D5 and D7 of the No. 2 pulse rectification circuit, the 2 end of the L2 of the No. 2 low-pass filter circuit is connected to the 1 end of the C5 of the No. 2 low-pass filter circuit, and the 2 end of the C5 of the No. 2 low-pass filter circuit is connected to the anodes of D6 and D8 of the No. 2 pulse rectification circuit.
Further, the 2 end of the L1 of the No. 1 low-pass filter circuit is connected to the C pole of the pulse generation circuit S5, the E pole of the pulse generation circuit S5 is connected to the positive output pole of the distributed fish blocking surface pulse generator, and the 2 end of the C5 of the No. 2 low-pass filter circuit is connected to the negative output pole of the distributed fish blocking surface pulse generator.
Further, when the S1 is turned on, the voltage between 2-1 ends of the primary side of the No. 1 high-frequency step-up transformer is Vdc (input voltage), the voltage between 4-5 ends of the secondary side of the No. 1 high-frequency step-up transformer is-N Vdc (transformer turn ratio is 1:1: N), the N Vdc is obtained after rectification by the No. 1 pulse rectification circuit D2 and D3, and the stable direct current voltage of 0.5D N Vdc (D is the turn-on duty ratio of S1) is obtained after filtering by the No. 1 low-pass filter circuit; when S2 is conducted, the voltage between the 2-3 ends of the primary side of the No. 1 high-frequency boosting transformer is Vdc, the voltage between the 4-5 ends of the secondary side of the No. 1 high-frequency boosting transformer is N Vdc (the transformer turn ratio is 1:1: N), the N Vdc is obtained after rectification through the No. 1 pulse rectification circuit D1 and D4, the stable direct current voltage of 0.5D Vdc (D is the conduction duty ratio of S2) is obtained after filtering through the No. 1 low-pass filter circuit, and the voltage of C4 can be controlled by controlling the duty ratios of S1 and S2, so that the amplitude of the output pulse voltage is controlled.
Further, when the S3 is turned on, the voltage between the 2-1 ends of the primary side of the No. 2 high-frequency step-up transformer is Vdc, the voltage between the 4-5 ends of the secondary side of the No. 2 high-frequency step-up transformer is-N × Vdc (the transformer turn ratio is 1:1: N), the N × Vdc is obtained after rectification by the No. 2 pulse rectification circuit D6 and D7, and the stable direct current voltage of 0.5 × D N × Vdc (D is the turn-on duty ratio of S3) is obtained after filtering by the No. 2 low-pass filter circuit; when S4 is conducted, the voltage between the 2-3 ends of the primary side of the No. 2 high-frequency boosting transformer is Vdc, the voltage between the 4-5 ends of the secondary side of the No. 2 high-frequency boosting transformer is N Vdc (the transformer turn ratio is 1:1: N), the N Vdc is obtained after rectification by the No. 2 pulse rectification circuit D5 and D6, the stable direct current voltage of 0.5D Vdc (D is the conduction duty ratio of S4) is obtained after filtering by the No. 2 low-pass filter circuit, and the voltage of C5 can be controlled by controlling the duty ratios of S3 and S4, so that the amplitude of the output pulse voltage is controlled.
Further, when S5 of the pulse generating circuit is turned on and outputs the pulse voltage, and when S5 is turned off, the output of the pulse voltage is stopped, and the control unit controls the duty ratio of S5, thereby controlling the frequency and the pulse width of the pulse voltage.
Further, the driving signal of the S1 of the push-pull circuit No. 1 is different from the driving signal of the S3 of the push-pull circuit No. 2 by 90 degrees, and the driving signal of the S2 of the push-pull circuit No. 1 is different from the driving signal of the S4 of the push-pull circuit No. 2 by 90 degrees, so that the input current ripple and the input EMI filter of the whole power module are reduced by the interleaving and parallel connection;
the high-power-density intelligent pulse power supply device comprises a surge suppression circuit, a bridgeless PFC circuit, a phase-shifted full-bridge DCDC circuit, an H-bridge pulse generation circuit and a complete machine control circuit which are sequentially connected.
The input surge suppression circuit is connected to the bridgeless PFC circuit, the input surge suppression circuit suppresses the surge current at the moment of electrifying through the charging resistor, the full-bridge circuit formed by the two diodes and the anti-parallel diodes of the two MOSFETs charges the direct current bus capacitor of the bridgeless PFC circuit, the charging resistor is short-circuited by the relay when the voltage of the direct current bus rises to a certain value, the bridgeless PFC circuit starts to work, outputs direct current voltage, and sends a starting completion signal to the phase-shifted full-bridge DCDC circuit.
After receiving a start completion signal of the bridgeless PFC circuit, the phase-shifted full-bridge DCDC circuit starts to work according to a voltage instruction sent by the whole machine control circuit and outputs specified direct-current voltage (the voltage value is the amplitude of pulse voltage);
the complete machine control circuit is connected to the H-bridge pulse generating circuit, and controls the H-bridge pulse generating circuit to work according to an instruction received by a human-computer interface or a communication interface after detecting that the output voltage of the phase-shifted full-bridge DCDC circuit is stable;
the H-bridge pulse circuit outputs a pulse voltage sequence according to a driving signal of the control circuit, and the positive and negative polarities, the pulse frequency and the pulse width of the pulse voltage are adjustable.
Furthermore, the bridgeless PFC circuit is different from a common single-phase PFC circuit, and has no power frequency rectifier bridge, each current loop only comprises two power devices, and the current loop of the common single-phase PFC circuit passes through three power devices; therefore, the bridgeless PFC circuit not only improves the power factor of the input side, reduces the input current harmonic wave, but also greatly improves the circuit efficiency; the bridgeless PFC circuit main circuit comprises boost inductors L1 and L2, field effect transistors S1 and S2, zero recovery silicon carbide diodes D1 and D2 and an output electrolytic capacitor C1; the bridgeless PFC circuit further comprises a sampling circuit, a driving circuit, an auxiliary source circuit and a control circuit. When the input voltage of the bridgeless PFC circuit is positive, S2 is turned off, S1 is switched, when S1 is turned on, current passes through anti-parallel diodes and L2 of L1, S1 and S2, current of inductors L1 and L2 is increased, output bus capacitor C1 supplies power to the phase-shifted full-bridge DCDC circuit, when S1 is turned off, current passes through anti-parallel diodes and L2 of L1, D1 and S2, current of inductors L1 and L2 is reduced, and commercial power, inductors L1 and L2 supply power to the phase-shifted full-bridge DCDC circuit and charge output bus capacitor C1; when the input voltage of the bridgeless PFC circuit is negative, S1 is turned off, S2 is switched, when S2 is turned on, current passes through anti-parallel diodes and L1 of L2, S2 and S1, current of inductors L1 and L2 is increased, output bus capacitor C1 supplies power to the phase-shifted full-bridge DCDC circuit, when S2 is turned off, current passes through anti-parallel diodes and L1 of L2, D2 and S1, current of inductors L1 and L2 is reduced, and commercial power, inductors L1 and L2 supply power to the phase-shifted full-bridge DCDC circuit and charge output bus capacitor C1.
Furthermore, the phase-shifted full-bridge DCDC circuit comprises a full-bridge circuit consisting of S5-S8, a resonant inductor L3, a blocking capacitor C2, a high-frequency transformer Tr, a full-bridge rectification circuit consisting of secondary zero recovery silicon carbide diodes D3-D6, a filter inductor L4, a filter capacitor C4, a corresponding sampling circuit driving circuit, an auxiliary source circuit and a control circuit. The output full-bridge rectifying circuit uses a silicon carbide device, so that the reverse recovery voltage peak and the reverse recovery loss of the diode are reduced, and the reliability and the efficiency of the circuit are improved. S5/S6 and S7/S8 of the phase-shifted full-bridge DCDC circuit are respectively conducted with a duty ratio of 0.5, the voltage pulse width of the primary side of the high-frequency transformer Tr is adjusted through phase-shifted control, so that the voltage on an output capacitor C4 of the phase-shifted full-bridge DCDC circuit is adjusted, zero-voltage switching-on is realized when S5-S8 work, switching-on loss is eliminated, and the efficiency of the phase-shifted full-bridge DCDC circuit and the efficiency of the whole high-power-density water surface pulse generator device are greatly improved. The amplitude of the pulse voltage output by the high-power-density water surface pulse generator device during working is adjusted by the phase-shifted full-bridge DCDC circuit, the phase-shifted full-bridge DCDC circuit adopts digital control, can conveniently accept a voltage amplitude instruction sent by a complete machine control system and adjust a phase shift angle to adjust the amplitude of the pulse voltage, the voltage amplitude can be continuously adjusted, and the defect that the power frequency isolation type water surface pulse generator can only be powered off and adjust the voltage amplitude in a stepping mode is avoided.
Furthermore, the H-bridge pulse generating circuit consists of insulated gate transistors T1-T4, a sampling circuit, a driving circuit, an auxiliary source circuit and the whole machine control system, wherein an H-bridge is formed by T1-T4. When the H-bridge pulse generating circuit outputs positive-polarity pulse voltage, T2 and T3 are turned off, and T1 and T4 are simultaneously turned on and off according to a driving signal sent by the complete machine control system, so that the frequency and the pulse width of positive-output voltage pulse are adjusted; when the H-bridge pulse generating circuit outputs negative-polarity pulse voltage, T1 and T4 are turned off, and T2 and T3 are simultaneously turned on and off according to a driving signal sent by the complete machine control system, so that the frequency and the pulse width of the negative output voltage pulse are adjusted.
Furthermore, the high-power-density water surface pulse generator device further comprises a human-computer interface and an external communication interface, a user CAN read the operation parameters and the state of the high-power-density water surface pulse generator device through the human-computer interface, the operation parameters and the state comprise the polarity amplitude frequency pulse width of output pulse voltage, the operation/stop/fault state, the temperature of internal core components and the like, the communication interface is a part of the whole machine control system and comprises various interfaces such as CAN/RS232/RS485, the operation parameters and the state are reported, operation instructions are received, the high-power-density water surface pulse generator device CAN conveniently communicate with an upper computer or a central control system of the whole fish farm or CAN conveniently network, and the information-based intelligent fish farm is formed.
The invention has the advantages that:
the selective interception of economic fishes or closed frogmans can be realized, and the safety of intercepted organisms can be ensured; the high modularization and the invisible underwater suspension laying of the underwater pulse electronic block net are realized;
the distributed water surface pulse generators can be used in parallel or independently, the parallel connection can be used for blocking fish, and the independent use can be used for driving fish and dispelling fish; meanwhile, the module is simple to expand; the current-tolerant requirements of devices in the direct-current power supply module are reduced, low current-tolerant switching devices can be selected, and the cost is reduced;
the distributed water surface pulse generator can realize the electrical isolation of input and output, has simple topology, no bridge arm direct connection risk and high reliability; the current ripple is reduced; the voltage stress of the secondary side rectifier diode is reduced, the power is shared, and the current stress of the primary side switching tube is reduced
Compared with the output voltage pulse amplitude, the pulse amplitude can be continuously adjusted through a human-computer interface or a communication interface, and power failure is not needed in the adjusting process.
The bridgeless PFC circuit and the phase-shifted full-bridge DCDC circuit are both high-switching-frequency high-efficiency topology, the loss is small, the input and output high-frequency are electrically isolated, and the whole water surface pulse generator is small in size and high in power density.
Drawings
FIG. 1 is a schematic diagram of the structure of an underwater invisible barrier device with distributed high-power modules according to the present invention;
FIG. 2 is a schematic circuit connection diagram of an underwater invisible barrier device with distributed high-power modules according to the present invention;
fig. 3 is a main circuit topology structure diagram of a distributed water surface pulse generator based on input staggered parallel output series connection of the underwater invisible barrier device with distributed high-power modules of the invention.
FIG. 4 is a driving level diagram of primary side MOSFETs S1-S4 of the distributed surface pulse generator of the underwater stealth barrier installation of the present invention with distributed high power supply modules.
Fig. 5 is a main circuit structure diagram of a high power distributed water surface pulse generator of the underwater invisible barrier device with the distributed high power supply module.
Fig. 6 is a circuit diagram of a surge suppression circuit and an additional bridgeless PFC of the high-power distributed surface pulse generator in the embodiment shown in fig. 5.
Fig. 7 is a phase-shifted full-bridge DCDC circuit of the high power distributed surface pulse generator in the embodiment shown in fig. 5.
Fig. 8 is an H-bridge pulse generating circuit of the high power distributed surface pulse generator in the embodiment of fig. 5.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, the invisible barrier net device of the present invention comprises a dc power supply device 1, a water surface pulse generator 2, a conductor electrode 3, and a water bottom ballast 4.
The 220V alternating voltage that commercial power or generator produced is connected to the input of DC power supply unit 1, and DC power supply unit 1 output amplitude 24V's stable direct voltage, and the output of DC power supply unit 1 is connected to the input of 1# surface of water impulse generator 2, and the output of 1# surface of water impulse generator 2 cascades to the input of 2# surface of water impulse generator 2, and the output of 2# surface of water impulse generator 2 cascades to the input of 3# surface of water impulse generator 2. The water surface pulse generator 2 outputs pulse voltage with the amplitude of 1000V, the pulse width of 10ms and the frequency of 20Hz and the peak power of 1 kVA. The water surface pulse generator 2 and the water bottom pressure carrier 4 are made of polyethylene pipes, and the lengths of the pipes are 2.7 m. The water surface pulse generator 2 is sealed at both ends and is hollow inside to connect the pulse cable and the communication cable while providing sufficient buoyancy. The underwater ballast 4 is sealed at both ends of the outer shell and filled with sand for reliable anchoring. The conductor electrode 3 is made of stainless steel wire ropes and communicated with the pulse cable inside the water surface pulse generator 2, one end of the conductor electrode 3 is reliably fixed on the shell of the water surface pulse generator 2, and the other end of the conductor electrode 3 is reliably fixed on the shell of the underwater pressure carrier 4. The distance between the conductor electrodes 3 is 0.8m, positive and negative pulses are sequentially conducted, and when the device normally operates, a staggered pulse electric field can be formed underwater, so that the fish or frogman can be effectively intercepted.
As can be seen from figure 1, the pulse electronic barrier net has high modularization degree, and can realize invisibility, quick distribution and recovery of the pulse electronic barrier net. The polyethylene pipe and the stainless steel wire rope are selected, so that cement piles are omitted from being pre-embedded in the shore and water, the blocking net structure and the construction process are greatly simplified, the installation and the maintenance are simple, and the problems of ship passing, flood discharge and water body environment influence are fundamentally solved. In addition, by optimizing the protection functions of the direct-current power supply device and the inside of the water surface pulse generator, the system is safe and reliable in operation, energy-saving and environment-friendly, can work continuously without stopping, and can effectively intercept economic fishes or closed frogmans all weather.
Referring to fig. 2, the barrier net apparatus of the present invention may be designed in a modular fashion.
In this embodiment, the modular barrier device comprises a dc power supply 1, a controller 6, a power bus 5, a communication bus 7, a surface pulse generator 2, and conductor electrodes 3.
In FIG. 2, the output of the DC power supply device 1 is connected with the input end of each water surface pulse generator 2 through 2 power buses 5; the water surface pulse generator 2 is a direct-direct current converter adopting a boost topological structure, boosts the input 24V direct current voltage to obtain 600V direct current voltage, and the output of the 600V direct current voltage is connected to the positive pole and the negative pole of the conductor electrode 3; the controller 6 is connected with the communication input end of each water surface pulse generator 2 through 2 communication buses 7; each conductor electrode 3 is a 4-meter long fish-blocking electric fence consisting of 8 electrodes, and the positive pole and the negative pole of the fish-blocking electric fence are connected in series through leads and are connected to the positive and negative output ends of the water surface pulse generator 2. And the controller 6 is used for charging each water surface pulse generator 2 in a time-sharing manner.
The front end of the water surface pulse generator 2 is connected to the direct current power supply device 1 in parallel, and the conductor electrode 3 is fixedly installed and used as fish blocking equipment.
When the water surface pulse generator 2 is used independently, the conductor electrode 3 is arranged on the mobile equipment and can be used as fish driving or fish catching equipment.
The water surface pulse generator 2 is provided with a short-circuit current limiting module, and blocks a driving signal of a switching device when the output is short-circuited.
The conductor electrodes 3 are in a modular design, and the number of the electrodes in each section of the electric fish barrage is less than a preset value.
The controller 6 transmits the generated driving signal to each water surface pulse generator 2 through the communication bus 7, and controls the on and off of the switching device in the water surface pulse generator 2, so that each module generates pulse voltage with the same frequency and different phases.
An embodiment of a distributed surface impulse generator 2 is given below.
In the embodiment, the main circuit diagram of the distributed water surface pulse generator 2 with the rated power of 600W is shown in fig. 3, and the distributed water surface pulse generator 2 comprises an input EMI circuit, a push-pull circuit, a high-frequency isolation transformer, a pulse rectification circuit, a low-pass filter circuit, a pulse generation circuit, an auxiliary source circuit, a control unit and a drive circuit, and is characterized in that the input EMI circuit is connected to two push-pull circuits with parallel inputs, and two switching tubes of the push-pull circuit work alternately to generate voltage pulses; the No. 1 push-pull circuit is connected to the No. 1 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 1 push-pull circuit are applied to the primary side of the No. 1 high-frequency isolation boosting transformer; the No. 2 push-pull circuit is connected to the No. 2 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 2 push-pull circuit are applied to the primary side of the No. 2 high-frequency isolation boosting transformer.
The secondary side of the No. 1 high-frequency isolation boosting transformer is connected to the No. 1 pulse rectifying circuit, and the boosted alternating-current voltage pulse is rectified to form a direct-current voltage pulse; the secondary side of the No. 2 high-frequency isolation boosting transformer is connected to the No. 2 pulse rectifying circuit, and the boosted alternating-current voltage pulse is rectified to form a direct-current voltage pulse; the No. 1 pulse rectifying circuit is connected to the No. 1 low-pass filter circuit, and the No. 1 low-pass filter circuit filters the direct-current voltage pulse to form stable and smooth direct-current voltage; the No. 2 pulse rectifying circuit is connected to the No. 2 low-pass filter circuit, and the No. 2 low-pass filter circuit filters the direct-current voltage pulse to form stable and smooth direct-current voltage; the positive electrode of the No. 1 low-pass filter circuit is connected to the positive electrode of the pulse generating circuit so as to generate voltage pulses with adjustable frequency and width; the cathode of the No. 1 low-pass filter circuit is connected to the anode of the No. 2 low-pass filter circuit to generate voltage pulses with adjustable frequency and width; the cathode of the No. 2 low-pass filter circuit is connected to the cathode of the pulse generating circuit to generate voltage pulses with adjustable frequency and width.
The input EMI circuit comprises a differential mode C1, a common mode inductor CM, and common mode capacitors C2 and C3; the push-pull circuit No. 1 includes field effect transistors (MOSFETs) S1 and S2; the push-pull circuit No. 2 includes field effect transistors (MOSFETs) S3 and S4; the pulse rectifying circuit No. 1 comprises zero recovery silicon carbide diodes D1-D4; the pulse rectifying circuit No. 2 comprises zero recovery silicon carbide diodes D5-D8; the pulse commutation circuit comprises a second full-bridge circuit and a second full-bridge buffer capacitor C4; no. 1 low-pass filter circuit includes output filter inductance L1 and output filter capacitance C4, and No. 2 low-pass filter circuit includes output filter inductance L2 and output filter capacitance C5, and the pulse generation circuit includes insulated gate transistor S5, and the control unit is connected to No. 1 push-pull circuit, No. 2 push-pull circuit respectively.
Two ends of a differential mode capacitor C1 of the input EMI filter are respectively connected to the positive electrode and the negative electrode of the direct current input end, a 1 end of a common mode inductor CM of the input EMI filter is connected to the positive electrode of a differential mode capacitor C1, and a 2 end of the common mode inductor CM of the input EMI filter is connected to the negative electrode of a differential mode capacitor C1; the 3 end of the common mode inductor CM of the input EMI filter is connected with the 1 end of the common mode capacitor C2, the 4 end of the common mode inductor CM of the input EMI filter is connected with the 2 end of the common mode capacitor C3, and the 2 end of the common mode capacitor C2 is connected with the 1 end of the common mode capacitor C3 and then is connected to the ground together.
The drain of the MOSFET S1 of the push-pull circuit No. 1 is connected to the 1 terminal of the high-frequency boosting transformer No. 1, the source of the MOSFET S1 of the push-pull circuit No. 1 is connected to the drain of the MOSFET S2 of the push-pull circuit No. 1 and the 2 terminal of the C3 of the input EMI filter, and the source of the MOSFET S2 of the push-pull circuit No. 1 is connected to the 3 terminal of the high-frequency boosting transformer No. 1.
The drain of the MOSFET S3 of the push-pull circuit No. 2 is connected to the 1 terminal of the high-frequency boosting transformer No. 2, the source of the MOSFET S3 of the push-pull circuit No. 2 is connected to the drain of the MOSFET S4 of the push-pull circuit No. 2 and the 2 terminal of the C3 of the input EMI filter, and the source of the MOSFET S4 of the push-pull circuit No. 2 is connected to the 3 terminal of the high-frequency boosting transformer No. 2.
And the 2 end of the No. 1 high-frequency boosting transformer is connected to the 1 end of the input EMI filter C2, and the 2 end of the No. 2 high-frequency boosting transformer is connected to the 1 end of the input EMI filter C2.
The 4 ends of the No. 1 high-frequency boosting transformer are connected to the anode of D1 and the cathode of D2 of the pulse rectification circuit, and the 5 ends of the No. 1 high-frequency boosting transformer are connected to the anode of D3 and the cathode of D4 of the No. 1 pulse rectification circuit. The 4 ends of the No. 2 high-frequency step-up transformer are connected to the anode of D5 and the cathode of D6 of the pulse rectification circuit, and the 5 ends of the No. 2 high-frequency step-up transformer are connected to the anode of D7 and the cathode of D8 of the pulse rectification circuit.
The 1 end of the L1 of the No. 1 low-pass filter circuit is connected to the cathodes of the D1 and the D3 of the No. 1 pulse rectification circuit, the 2 end of the L1 of the No. 1 low-pass filter circuit is connected to the 1 end of the C4 of the No. 1 low-pass filter circuit, and the 2 end of the C4 of the No. 1 low-pass filter circuit is connected to the anodes of the D2 and the D4 of the No. 1 pulse rectification circuit. The 1 end of the L2 of the No. 2 low-pass filter circuit is connected to the cathodes of the D5 and the D7 of the No. 2 pulse rectification circuit, the 2 end of the L2 of the No. 2 low-pass filter circuit is connected to the 1 end of the C5 of the No. 2 low-pass filter circuit, and the 2 end of the C5 of the No. 2 low-pass filter circuit is connected to the anodes of the D6 and the D8 of the No. 2 pulse rectification circuit.
The 2 end of the L1 of the No. 1 low-pass filter circuit is connected to the C pole of the pulse generation circuit S5, the E pole of the pulse generation circuit S5 is connected to the output anode of the distributed water surface pulse generator 2, and the 2 end of the C5 of the No. 2 low-pass filter circuit is connected to the output cathode of the distributed water surface pulse generator 2.
When S1 is conducted, the voltage between 2-1 ends of the primary side of the No. 1 high-frequency boosting transformer is Vdc (input voltage), the voltage between 4-5 ends of the secondary side of the No. 1 high-frequency boosting transformer is-N Vdc (the transformer turn ratio is 1:1: N), the N Vdc is obtained after rectification by a No. 1 pulse rectification circuit D2 and D3, and the stable direct current voltage of 0.5D Vdc is obtained after filtering by a No. 1 low-pass filter circuit (D is the conduction duty ratio of S1); when S2 is conducted, the voltage between 2-3 ends of the primary side of the No. 1 high-frequency boosting transformer is Vdc, the voltage between 4-5 ends of the secondary side of the No. 1 high-frequency boosting transformer is N Vdc (the turn ratio of the transformer is 1:1: N), the N Vdc is obtained after rectification through the No. 1 pulse rectification circuit D1 and D4, the stable direct current voltage of 0.5D N Vdc is obtained after filtering through the No. 1 low-pass filter circuit (D is the conduction duty ratio of S2), and the voltage of C4 can be controlled by controlling the duty ratios of S1 and S2, so that the amplitude of the output pulse voltage is controlled.
When S3 is conducted, the voltage between 2-1 ends of the primary side of the No. 2 high-frequency boosting transformer is Vdc, the voltage between 4-5 ends of the secondary side of the No. 2 high-frequency boosting transformer is-N Vdc (the turn ratio of the transformer is 1:1: N), the N Vdc is obtained after rectification by a No. 2 pulse rectification circuit D6 and D7, and the stable direct current voltage of 0.5D N Vdc is obtained after filtering by a No. 2 low-pass filter circuit (D is the conduction duty ratio of S3); when S4 is conducted, the voltage between the 2-3 ends of the primary side of the No. 2 high-frequency boosting transformer is Vdc, the voltage between the 4-5 ends of the secondary side of the No. 2 high-frequency boosting transformer is N Vdc (the turn ratio of the transformer is 1:1: N), the N Vdc is obtained after rectification through the No. 2 pulse rectification circuit D5 and D6, the stable direct current voltage of 0.5D N Vdc is obtained after filtering through the No. 2 low-pass filter circuit (D is the conduction duty ratio of S4), and the voltage of C5 can be controlled by controlling the duty ratios of S3 and S4, so that the amplitude of the output pulse voltage is controlled.
When S5 in the pulse generating circuit is turned on, the pulse voltage is output, when S5 is turned off, the pulse voltage is stopped being output, and the control unit can realize the frequency and the pulse width control of the pulse voltage by controlling the duty ratio and the frequency of the driving level of S5.
As shown in fig. 4, the driving signal of S1 of the push-pull circuit No. 1 is different from the driving signal of S3 of the push-pull circuit No. 2 by 90 degrees, and the driving signal of S2 of the push-pull circuit No. 1 is different from the driving signal of S4 of the push-pull circuit No. 2 by 90 degrees, so that the input current ripple and the input EMI filter of the whole power module are reduced by the interleaving and parallel connection. The voltage stress of the secondary side rectifier diode is reduced by the mode of multi-module output series connection, the power is shared, and the current stress of the primary side switching tube is reduced.
In another embodiment, a higher power density surface pulse generator 2 may be provided, for example rated for up to 3kW, the main circuit configuration of the surface pulse generator 2 being as shown in fig. 5. The circuit comprises a surge suppression and bridgeless PFC circuit 21, a phase-shifted full-bridge DCDC circuit 22, an H-bridge pulse generation circuit 23, a control circuit 24, a human-computer interface 25 and a communication interface 26 which are connected in sequence. The user CAN read the operation parameters and the state of the water surface pulse generator 2 with high power density through the man-machine interface 25, including the polarity amplitude frequency pulse width of the output pulse voltage, the operation/stop/fault state, the temperature of the internal core part, and the communication interface 26 is a part of the whole machine control system, including various interfaces such as CAN/RS232/RS485, reporting the operation parameters and the state, receiving the operation instruction, and facilitating the communication or networking between the water surface pulse generator 2 with high power density and the upper computer or the central control system of the whole fish farm.
As shown in fig. 6, the input surge suppression circuit includes a relay KC and a charging resistor R, as shown in fig. 6, the input surge suppression circuit is connected to the bridgeless PFC circuit, the input surge suppression circuit suppresses the surge current at the power-on moment through the charging resistor R, the input mains supply charges a dc bus capacitor C1 of the bridgeless PFC circuit through a full-bridge circuit composed of two diodes D1 and D2 and anti-parallel diodes of two MOSFETs S1 and S2, the charging resistor R is short-circuited by the relay KC when the voltage of C1 rises to a certain value, the bridgeless PFC circuit starts to operate, outputs the dc voltage, and sends a start completion signal to the full-bridge phase-shifted DCDC circuit. After receiving a starting completion signal of the bridgeless PFC circuit, the phase-shifted full-bridge DCDC circuit starts to work according to a voltage instruction of a complete machine control circuit and outputs specified direct-current voltage; the whole machine control circuit is connected to the H-bridge pulse generating circuit through the driving circuit, and controls the H-bridge pulse generating circuit to work according to an instruction received by a human-computer interface or a communication interface after detecting that the output voltage of the phase-shifted full-bridge DCDC circuit is stable; the H-bridge pulse circuit outputs a pulse voltage sequence to receive a driving signal of the control circuit and controls the positive and negative polarities, the pulse frequency and the width of the output pulse voltage.
As shown in fig. 6, the bridgeless PFC circuit does not use the power frequency rectifier bridge in the general single-phase PFC circuit, each current loop only passes through two power devices, while the current loop of the general PFC circuit passes through three power devices; therefore, the bridgeless PFC circuit not only improves the power factor of the input side, optimizes the current waveform, but also greatly improves the circuit efficiency. The main circuit of the bridgeless PFC circuit comprises boost inductors L1 and L2, field effect transistors S1 and S2, zero-recovery silicon carbide diodes D1 and D2 and an output electrolytic capacitor C1; the bridgeless PFC circuit further comprises a sampling circuit, a driving circuit, an auxiliary source circuit and a control circuit. When the input voltage of the bridgeless PFC circuit is positive, S2 is turned off, an S1 switch is operated, when S1 is turned on, current passes through anti-parallel diodes and L2 of L1, S1 and S2, the current of inductors L1 and L2 is increased, an output bus capacitor C1 supplies power to a later-stage phase-shifted full-bridge DCDC circuit, when S1 is turned off, the current passes through anti-parallel diodes and L2 of L1, D1 and S2, the current of inductors L1 and L2 is reduced, and commercial power, inductors L1 and L2 supply power to the phase-shifted full-bridge DCDC circuit and charge an output bus capacitor C1; when the input voltage of the bridgeless PFC circuit is negative, S1 is turned off, S2 switches are operated, when S2 is turned on, current passes through the anti-parallel diodes and L1 of the L2, S2 and S1, the currents of the inductors L1 and L2 are increased, the output bus capacitor C1 supplies power to the phase-shifted full-bridge DCDC circuit, when S2 is turned off, the currents pass through the anti-parallel diodes and L1 of the L2, D2 and S1, the currents of the inductors L1 and L2 are reduced, and the commercial power and the inductors L1 and L2 supply power to the phase-shifted full-bridge DCDC circuit and charge the output bus capacitor C1.
As shown in fig. 7, the phase-shifted full-bridge DCDC circuit includes a full-bridge circuit composed of S5-S8, a resonant inductor L3, a blocking capacitor C2, a high-frequency transformer Tr, a full-bridge rectifier circuit composed of secondary zero-recovery silicon carbide diodes D3-D6, a filter inductor L4, a filter capacitor C4, a sampling circuit driving circuit, an auxiliary source circuit, and a control circuit. The output full-bridge rectifying circuit uses a silicon carbide device, so that the reverse recovery voltage peak and the reverse recovery loss of the diode are reduced, and the reliability and the efficiency of the circuit are improved. S5/S6 and S7/S8 of the phase-shifted full-bridge DCDC circuit are respectively conducted with a duty ratio of 0.5, the voltage pulse width of the primary side of the high-frequency transformer Tr is adjusted through phase-shifted control, so that the voltage on an output capacitor C4 of the phase-shifted full-bridge DCDC circuit is adjusted, zero-voltage switching-on is realized when S5-S8 work, switching-on loss is eliminated, and the efficiency of the phase-shifted full-bridge DCDC circuit and the efficiency of the whole high-power-density water surface pulse generator 2 are greatly improved. The amplitude of the pulse voltage output by the high-power-density water surface pulse generator 2 during working is adjusted by the phase-shifted full-bridge DCDC circuit, the phase-shifted full-bridge DCDC circuit adopts digital control, can conveniently receive a voltage amplitude instruction sent by a complete machine control system and adjust a phase shift angle to adjust the output voltage, the voltage amplitude can be continuously adjusted, and the defect that the power frequency isolation type distributed water surface pulse generator can only adjust the voltage amplitude in a power-off and stepping mode is overcome.
As shown in FIG. 8, the H-bridge pulse generating circuit comprises insulated gate transistors T1-T4, a driving circuit, an auxiliary source circuit and a complete machine control system, wherein the H-bridge is formed by T1-T4. When the H-bridge pulse generating circuit outputs positive-polarity pulse voltage, T2 and T3 are turned off, and T1 and T4 are simultaneously turned on and off according to driving signals sent by a complete machine control system, so that the frequency and the pulse width of positive output voltage pulses are adjusted; when the H-bridge pulse generating circuit outputs negative-polarity pulse voltage, T1 and T4 are turned off, and T2 and T3 are simultaneously turned on and off according to a driving signal sent by a complete machine control system, so that the frequency and the pulse width of the negative output voltage pulse are adjusted.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other various embodiments according to the disclosure of the embodiments and the drawings, and therefore, all designs that can be easily changed or modified by using the design structure and thought of the present invention fall within the protection scope of the present invention.

Claims (9)

1. An underwater concealed barrier device with distributed high power supply modules, the underwater concealed barrier device comprising: a direct current power supply device, a water surface pulse generator, a conductor electrode and a water bottom pressure carrier,
the direct current power supply device is used for converting alternating current generated by commercial power or a generator into stable direct current required by the water surface pulse generator;
the output end of the direct current power supply device is connected to the input end of the water surface pulse generator, and the water surface pulse generator is used for converting direct current generated by the direct current power supply device into high-voltage pulses with adjustable polarities, and driving the conductor electrodes to form a pulse electronic blocking net;
a plurality of conductor electrodes form an electric grid;
the water surface pulse generators are multiple, and the output end of each water surface pulse generator is respectively connected with the positive electrode and the negative electrode of one electric grid;
the system also comprises a controller, a power bus and a communication bus;
the controller is in communication connection with the plurality of water surface pulse generators through a communication bus.
2. The underwater invisible barrier net device with the distributed high-power supply modules according to claim 1, wherein:
the conductor electrodes are communicated with the output end inside the water surface pulse generator through cables, one end of each conductor electrode is fixed on the water surface pulse generator shell, the other end of each conductor electrode is fixed on the underwater ballast body shell, a plurality of conductor electrodes form an electric grid, and one electric grid is connected with one water surface pulse generator and one underwater ballast body to jointly form an invisible barrier net module.
3. The underwater invisible barrier net device with the distributed high-power supply modules according to claim 2, wherein the water surface pulse generator is hollow inside and sealed at two ends for providing sufficient buoyancy;
the underwater pressing carrier is filled or bound with sand stones to realize underwater anchoring at the bottom of the invisible barrier net module;
the water surface pulse generator and the underwater pressure carrier both adopt insulator pipes, and the conductor electrode can be wound on the outer wall of the pipe.
4. The underwater invisible barrier device with the distributed high-power supply modules according to claim 3, wherein: the controller is used for charging the plurality of water surface pulse generators in a time-sharing manner; when the water surface pulse generator is used independently, the fish blocking electric fence is arranged on the mobile equipment and is used as fish driving or catching equipment.
5. An underwater invisible barrier net device with distributed high-power supply modules according to any one of claims 1-4, wherein: the water surface pulse generator includes: the power supply comprises an input EMI circuit, two groups of push-pull circuits, two groups of high-frequency isolation transformers, two groups of pulse rectifying circuits, two groups of low-pass filter circuits, a pulse generating circuit, an auxiliary source circuit, a control unit and a driving circuit;
the input EMI circuit is connected to two push-pull circuits with parallel inputs, and two switching tubes of the push-pull circuits work alternately to generate voltage pulses;
the No. 1 push-pull circuit is connected to the No. 1 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 1 push-pull circuit are applied to the primary side of the No. 1 high-frequency isolation boosting transformer;
the No. 2 push-pull circuit is connected to the No. 2 high-frequency isolation boosting transformer, and voltage pulses generated by the No. 2 push-pull circuit are applied to the primary side of the No. 2 high-frequency isolation boosting transformer;
the secondary side of the No. 1 high-frequency isolation boosting transformer is connected to the No. 1 pulse rectifying circuit and is used for rectifying the boosted alternating voltage pulse to form a direct voltage pulse;
the secondary side of the No. 2 high-frequency isolation boosting transformer is connected to the No. 2 pulse rectifying circuit and used for rectifying the boosted alternating voltage pulse to form a direct voltage pulse;
the No. 1 pulse rectification circuit is connected to the No. 1 low-pass filter circuit, and the No. 1 low-pass filter circuit filters the direct-current voltage pulse to form stable and smooth direct-current voltage;
the No. 2 pulse rectification circuit is connected to the No. 2 low-pass filter circuit, and the No. 2 low-pass filter circuit filters the direct-current voltage pulse to form stable and smooth direct-current voltage;
the positive pole of No. 1 low pass filter circuit is connected to the pulse generating circuit positive pole, the negative pole of No. 1 low pass filter circuit is connected to the No. 2 low pass filter circuit positive pole, the negative pole of No. 2 low pass filter circuit is connected to the pulse generating circuit negative pole for produce the voltage pulse that frequency, width can be transferred.
6. The underwater invisible barrier device with the distributed high-power supply modules according to claim 5, wherein: the input EMI circuit comprises a differential mode capacitor C1, a common mode inductor CM, a common mode capacitor C2 and C3; the push-pull circuit No. 1 comprises field effect transistors S1 and S2; the No. 2 push-pull circuit comprises field effect transistors S3 and S4; the No. 1 pulse rectifying circuit comprises zero recovery silicon carbide diodes D1-D4; the No. 2 pulse rectifying circuit comprises zero recovery silicon carbide diodes D5-D8; the No. 1 low-pass filter circuit comprises an output filter inductor L1 and an output filter capacitor C4, the No. 2 low-pass filter circuit comprises an output filter inductor L2 and an output filter capacitor C5, the pulse generation circuit comprises an insulated gate transistor S5, and the control unit is connected to the No. 1 push-pull circuit, the No. 2 push-pull circuit and the pulse generation circuit through the driving circuit respectively.
7. An underwater invisible barrier net device with distributed high-power supply modules according to any one of claims 1-4, wherein: the water surface pulse generator comprises the input surge suppression circuit, a bridgeless PFC circuit, a phase-shifted full-bridge DCDC circuit, an H-bridge pulse generation circuit and a complete machine control circuit;
the input surge suppression circuit is connected to the bridgeless PFC circuit, a charging resistor in the input surge suppression circuit is used for suppressing surge current at the moment of power-on, and after the power-on, commercial power is used for charging a direct-current bus capacitor of the bridgeless PFC circuit through a full-bridge circuit consisting of two diodes and anti-parallel diodes of two field effect transistors; the bridgeless PFC circuit is used for outputting fixed direct-current voltage and sending a starting completion signal to the phase-shifted full-bridge DCDC circuit when the direct-current bus voltage rises to a specified value and the relay is closed to short-circuit the charging resistor;
the phase-shifted full-bridge DCDC circuit is used for starting to work according to a voltage instruction of the whole machine control circuit after receiving a starting completion signal of the bridgeless PFC circuit and outputting a specified direct-current voltage;
the complete machine control circuit is connected to the H-bridge pulse generating circuit, and after detecting that the output voltage of the phase-shifted full-bridge DCDC circuit is stable, the complete machine control circuit receives an instruction according to a human-computer interface or a communication interface to control the H-bridge pulse generating circuit to work;
the H-bridge pulse circuit receives the driving signal of the control circuit, outputs a pulse voltage sequence and controls the positive and negative polarities, the pulse frequency and the width of the output pulse voltage.
8. The underwater stealth barrier device with the distributed high-power supply modules according to claim 7, wherein the main circuit of the bridgeless PFC circuit comprises boost inductors L1 and L2, field effect transistors S1 and S2, zero recovery silicon carbide diodes D1 and D2, an output electrolytic capacitor C1; the bridgeless PFC circuit further comprises a sampling circuit, a driving circuit, an auxiliary source circuit and a control circuit; when the input voltage of the bridgeless PFC circuit is positive, the field effect transistor S2 is turned off, and the field effect transistor S1 is switched to act; when the field effect transistor S1 is switched on, the current passes through the boost inductor L1, the anti-parallel diodes of the field effect transistors S1 and S2 and the boost inductor L2, the currents of the boost inductor L1 and the boost inductor L2 are increased, and the output bus capacitor C1 supplies power for the phase-shifted full-bridge DCDC circuit; when the field effect transistor S1 is turned off, the current passes through a boosting inductor L1, a zero recovery silicon carbide diode D1, an anti-parallel diode of the field effect transistor S2 and an L2, the currents of the boosting inductors L1 and L2 are reduced, and the commercial power, the boosting inductors L1 and L2 supply power to the phase-shifted full-bridge DCDC circuit and charge an output bus capacitor C1; when the input voltage of the bridgeless PFC circuit is negative, the field effect transistor S1 is turned off, the field effect transistor S2 is switched to act, when the field effect transistor S2 is turned on, the current passes through the boost inductor L2, the anti-parallel diodes of the field effect transistors S2 and S1 and the boost inductor L1, the currents of the boost inductor L1 and the boost inductor L2 are increased, and the output bus capacitor C1 supplies power to the phase-shifted full-bridge DCDC circuit; when the effect transistor S2 is turned off, the current decreases through the boost inductor L2, the zero recovery silicon carbide diode D2, the anti-parallel diode of the field effect transistor S1, the boost inductor L1, and the boost inductors L1 and L2, and the utility power and the boost inductors L1 and L2 power the phase-shifted full-bridge DCDC circuit and charge the output bus capacitor C1.
9. The underwater invisible barrier device with the distributed high-power supply modules according to claim 8, wherein the water surface pulse generator further comprises a human-machine interface and an external communication interface.
CN201911201085.9A 2019-11-29 2019-11-29 Underwater invisible blocking net device with distributed high-power supply modules Active CN110800677B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911201085.9A CN110800677B (en) 2019-11-29 2019-11-29 Underwater invisible blocking net device with distributed high-power supply modules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911201085.9A CN110800677B (en) 2019-11-29 2019-11-29 Underwater invisible blocking net device with distributed high-power supply modules

Publications (2)

Publication Number Publication Date
CN110800677A true CN110800677A (en) 2020-02-18
CN110800677B CN110800677B (en) 2022-05-27

Family

ID=69492063

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911201085.9A Active CN110800677B (en) 2019-11-29 2019-11-29 Underwater invisible blocking net device with distributed high-power supply modules

Country Status (1)

Country Link
CN (1) CN110800677B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111277137A (en) * 2020-03-16 2020-06-12 云南电网有限责任公司电力科学研究院 DCDC converter
CN112767673A (en) * 2020-12-29 2021-05-07 中国电子科技集团公司第十八研究所 Distributed control system for high-power digital pulse power supply

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2209443Y (en) * 1995-02-22 1995-10-11 江振翔 Underwater pulse shrimp-catching instrument
CN2355535Y (en) * 1999-02-11 1999-12-29 云南大学 Electric net for tucking fish
NZ577253A (en) * 2009-05-25 2010-11-26 Dean Wyatt An apparatus and method for long line fishing including a mechanism to transfer the line between land based and floating receivers
CN102096379A (en) * 2010-11-23 2011-06-15 重庆源亘智能电子科技有限责任公司 Intelligent deep water fish catching/blocking master controller
CN102972320A (en) * 2012-12-18 2013-03-20 周文涛 Electronic pulse fish trapping device
CN109412413A (en) * 2018-12-24 2019-03-01 深圳市思科锐实业有限公司 Intelligent high pressure pulse DC power supply
CN209151025U (en) * 2018-12-20 2019-07-23 中国船舶重工集团公司第七一九研究所 One kind is adjustable to block fish Pulased power supply unit
CN110122468A (en) * 2019-05-05 2019-08-16 三峡大学 A kind of pulse current drive fish device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2209443Y (en) * 1995-02-22 1995-10-11 江振翔 Underwater pulse shrimp-catching instrument
CN2355535Y (en) * 1999-02-11 1999-12-29 云南大学 Electric net for tucking fish
NZ577253A (en) * 2009-05-25 2010-11-26 Dean Wyatt An apparatus and method for long line fishing including a mechanism to transfer the line between land based and floating receivers
CN102096379A (en) * 2010-11-23 2011-06-15 重庆源亘智能电子科技有限责任公司 Intelligent deep water fish catching/blocking master controller
CN102972320A (en) * 2012-12-18 2013-03-20 周文涛 Electronic pulse fish trapping device
CN209151025U (en) * 2018-12-20 2019-07-23 中国船舶重工集团公司第七一九研究所 One kind is adjustable to block fish Pulased power supply unit
CN109412413A (en) * 2018-12-24 2019-03-01 深圳市思科锐实业有限公司 Intelligent high pressure pulse DC power supply
CN110122468A (en) * 2019-05-05 2019-08-16 三峡大学 A kind of pulse current drive fish device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111277137A (en) * 2020-03-16 2020-06-12 云南电网有限责任公司电力科学研究院 DCDC converter
CN112767673A (en) * 2020-12-29 2021-05-07 中国电子科技集团公司第十八研究所 Distributed control system for high-power digital pulse power supply

Also Published As

Publication number Publication date
CN110800677B (en) 2022-05-27

Similar Documents

Publication Publication Date Title
Shimizu et al. A flyback-type single phase utility interactive inverter with low-frequency ripple current reduction on the DC input for an AC photovoltaic module system
US7333348B2 (en) DC-DC converter
WO2018107623A1 (en) Pfc dual-full-bridge-based smart sine wave voltage conversion circuit
CN106533195A (en) Intelligent full-bridge sine-wave voltage switching circuit based on PFC and LLC resonance
CN102158105B (en) High-power factor bidirectional single-stage full bridge converter and control method thereof
CN103701309B (en) Frequency conversion equipment supplied by AC/DC electricity system and transducer air conditioning
CN110800677B (en) Underwater invisible blocking net device with distributed high-power supply modules
CN204334330U (en) A kind of modularization high-voltage power supply circuit
CN107052527B (en) A kind of high-power SiC arc burying welding power source
CN106849690A (en) Intelligent half-bridge sine voltage change-over circuit based on PFC Yu LLC resonance
CN108418422B (en) Power supply system compatible with single-phase and three-phase input
CN101854122B (en) High-voltage inverted low-voltage chopped-mode welding power supply
CN109286307A (en) A kind of Forward- flyback power factor correcting
CN206620058U (en) Intelligent half-bridge sine voltage change-over circuit based on PFC Yu LLC resonance
CN109274274A (en) A kind of five element resonance converters
CN209345007U (en) Frequency conversion light modulator based on PFC and T-type inverter circuit
CN206415753U (en) A kind of high-power SiC arc burying welding power sources
CN101350568B (en) Double inverse stimulation inverter for diode clamp
CN203590040U (en) Power supply circuit and LED street lamp
CN102222966A (en) Uninterrupted power supply
CN105471279A (en) Ultraviolet lamp drive power supply
CN202334349U (en) Direct current isolated grid-connected inversion circuit and photovoltaic inversion system
CN206620057U (en) Intelligent amendment wave voltage change-over circuit based on PFC, full-bridge and half-bridge
CN211407340U (en) High-power-density fish blocking pulse power supply device
CN103904931A (en) Monopole distributed photovoltaic micro inverter circuit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant