CN115113674A - Controllable magnetic field generating device - Google Patents
Controllable magnetic field generating device Download PDFInfo
- Publication number
- CN115113674A CN115113674A CN202210674216.0A CN202210674216A CN115113674A CN 115113674 A CN115113674 A CN 115113674A CN 202210674216 A CN202210674216 A CN 202210674216A CN 115113674 A CN115113674 A CN 115113674A
- Authority
- CN
- China
- Prior art keywords
- resistor
- voltage
- current
- control circuit
- mos tube
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 56
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000003985 ceramic capacitor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
The controllable magnetic field generating device provided by the invention comprises a current loop control circuit and a voltage loop control circuit, wherein the current loop control circuit realizes a current-to-voltage function and is matched with a voltage loop control loop to carry out double closed loop pure analog control on the voltage loop and the current loop, a low time delay control loop of the output current of equipment can be realized, and the reduction of control time delay is beneficial to the improvement of the theoretical maximum output frequency. The invention does not need extra CPU to control the system, and can realize the control of the output magnetic field of the equipment only by adding a current loop control circuit on the traditional power supply topology and controlling according to the current loop control circuit, thereby improving the integration level of the equipment and the power density.
Description
Technical Field
The invention belongs to the technical field of pulse power devices, and particularly relates to a controllable magnetic field generating device.
Background
With the increasing importance of marine resources and the increasing of marine geophysical exploration work, the marine controlled source electromagnetic method gradually becomes a very effective geophysical detection technology for detecting marine oil and gas resources and seabed natural gas hydrate reservoirs. The method can be used for detecting the structure of the seabed geology by measuring the electromagnetic field distribution rule of a magnetic field emission source induced by the seabed stratum on the surface of seawater or the seabed.
Conventional methods for generating magnetic fields include energizing a coil with a permanent magnet and with a controllable current source. The permanent magnet is adopted to directly generate a static magnetic field, an alternating magnetic field needs to be generated by moving the permanent magnet, the ocean controllable current source electromagnetic method generally needs an alternating magnetic field for detection, and the alternating magnetic field generated by moving the permanent magnet cannot be accurately controlled in the intensity of a magnetic field waveform or the radiation direction, so that the application of detection is not facilitated. The method of exciting the coil with a controllable power supply can generate a magnetic field with controlled intensity, frequency and radiation direction. Therefore, the method for generating the magnetic field by adopting the controllable current source has great advantages, and the magnetic field with controllable strength, frequency and radiation direction can be generated by controlling the output current limit of the controllable current source.
For example, patent CN 113472233A-a magnetic integrated high-power pulse current source "is a device, which is formed by connecting n Buck switching current sources in parallel, and realizes that the phase difference of the output currents of the n current sources is sequentially delayed by 360 °/n by sampling the output currents of each power supply. For another example, patent CN 114035647 a "a pulse power device for generating a disturbing magnetic field" includes 2 sets of pulse power devices, each set of pulse power device is composed of a pulse power supply, a wall-penetrating electrode, a corresponding coil, and a control system, and the control of the magnetic field at the coil end can be realized by sampling the output current of the pulse power supply in real time.
The magnetic field generating device in the market at present generally adopts a digital control framework of a switching power supply circuit, a current sampling circuit, a communication control circuit and an electromagnetic coil, and the framework needs to carry out closed-loop control on a control circuit after sampling output current in real time so as to achieve the purpose of controlling the output current. On one hand, the digital control architecture which controls the current after sampling can increase the control time delay, and limits the theoretical maximum output frequency and strength of the magnetic field. On the other hand, the volume of the equipment is limited due to the extra sampling and control circuit, so that the miniaturization of the equipment is not facilitated, and the power density is improved.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a controllable magnetic field generating device. The technical problem to be solved by the invention is realized by the following technical scheme:
the invention provides a controllable magnetic field generating device, which comprises: a voltage loop control circuit and a current loop control circuit,
the output of the current loop control circuit is externally connected with a pair of magnetic poles which can be arranged at any position of the ocean;
the current loop control circuit is controlled by the control input voltage and is used for converting the current output by the magnetic pole into a voltage signal in real time and comparing the voltage signal with the voltage output by the voltage loop control circuit so as to control the output to be fed back to the voltage loop control circuit;
and the voltage loop control circuit is used for controlling the voltage input to the current loop control circuit according to the feedback voltage, and realizing real-time reliable control of the voltage and the current of the pair of magnetic poles in a double closed loop structure mode with the current loop control circuit.
Optionally, the voltage loop control circuit includes: the circuit comprises a voltage loop controller, a first mos tube Q1, a second mos tube Q2, a third mos tube Q3, a fourth mos tube Q4, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first inductor L1;
the maximum output current control tube pin Ilim of the voltage loop controller is connected with a first resistor R1, the other end of the first resistor R1 is grounded, and the maximum output current of the voltage loop controller is controlled by the configuration of the first resistor R1; the working frequency control pin Freq of the voltage loop controller is connected with a second resistor R2, the other end of the second resistor R2 is grounded, and the working frequency of the voltage loop controller is controlled by the configuration of the second resistor R2;
the gates of the first mos tube Q1, the second mos tube Q2, the third mos tube Q3 and the fourth mos tube Q4 are respectively connected with pins TG1, TG2, BG1 and BG2 of a voltage ring controller; the source of the first mos transistor Q1 is connected with the source of the third mos transistor Q3 and with the pin of SW1 of the voltage loop controller, the source of the second mos transistor Q2 is connected with the source of the fourth mos transistor Q4 and with the pin of SW2 of the voltage loop controller, and the first inductor L1 is connected between the source of the third mos transistor Q3 and the source of the fourth mos transistor Q4 as a freewheeling inductor; the drain of the first mos transistor Q1 is connected to one end of the first capacitor C1, one end of the second capacitor C2 and the power supply, respectively, and the other ends of the first capacitor C1 and the second capacitor C2 are grounded; the drain of the second mos transistor Q2 is connected to one end of a third capacitor C3, one end of a fourth capacitor C4, one end Vout of a fourth resistor R4, and the positive input terminal IN + of the current loop control circuit, respectively, and the other ends of the third capacitor C3 and the fourth capacitor C4 are grounded; a VFB pin of the voltage loop controller is connected to a voltage signal which is connected to the current loop control circuit through the output resistor, and is connected to one end of a third resistor R3 and one end of a fourth resistor R4; the other end of the third resistor R3 is grounded; the power end of the voltage loop controller is connected with a power supply.
Optionally, the first mos tube Q1, the second mos tube Q2, the third mos tube Q3, and the fourth mos tube Q4 are NMOS tubes, and the first capacitor C1 and the fourth capacitor C4 are electrolytic capacitors; the second capacitor C2 and the third capacitor C3 are ceramic chip capacitors.
Optionally, the voltage loop controller is of type LTC 3777.
Optionally, the relationship between the output voltage V of the voltage loop control circuit and the third resistor R3 and the fourth resistor R4 is:
V= 1.2*1+R 4 /R 3 ；
wherein R is 3 And R 4 Respectively showing the resistance values of the third resistor R3 and the fourth resistor R4.
Optionally, the voltage signal input by the VFB pin of the voltage loop controller is constant at 1.2V.
Optionally, the current loop control circuit comprises: the current loop controller comprises a current loop controller, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8, wherein the fifth resistor R5 is bridged between a positive input end + IN and a negative input end-IN of the current loop controller, the positive input end + IN of the current loop controller is connected with a voltage signal input by an output resistor of a voltage loop control circuit, the negative input end-IN of the current loop controller is connected with a current signal input by a pair of magnetic poles, the control end of the current loop controller is connected with a linear relation between an input voltage signal and a magnetic pole output magnetic field controlled by a sixth resistor R6 and a seventh resistor (R7), the input voltage signal is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7 and the control end of the current loop controller, and the other end of the seventh resistor R7 is grounded.
Optionally, the current loop controller is model LMP 8646.
Optionally, the control end of the current loop controller is connected to control the input voltage signal Vctr through the sixth resistor R6 and the seventh resistor (R7), and the input voltage signal of the control end of the current loop controller and the fifth resistor R5, the sixth resistor R6, and the seventh resistor R7 are represented as:
V Ctr R 7 /(R 6+ R 7 ) + I * R 5 (R 6 //R 7 )/5000=1.2；
wherein the content of the first and second substances, * denotes the multiplication number, R 5 、R 6 、R 7 The resistances of the fifth resistor R5, the sixth resistor R6 and the seventh resistor (R7) are respectively shown,// shows that the two resistors are connected in parallel, and I shows the peak current flowing through the fifth resistor R5.
The controllable magnetic field generating device provided by the invention comprises a current loop control circuit and a voltage loop control circuit, wherein the current loop control circuit realizes a current-to-voltage function and is matched with a voltage loop control loop to carry out double closed loop pure analog control on the voltage loop and the current loop, a low time delay control loop of the output current of equipment can be realized, and the reduction of control time delay is beneficial to the improvement of the theoretical maximum output frequency. The invention does not need extra CPU to control the system, and can realize the control of the output magnetic field of the equipment only by adding a current loop control circuit on the traditional power supply topology and controlling according to the current loop control circuit, thereby improving the integration level of the equipment and the power density.
Drawings
Fig. 1 is a schematic structural diagram of a controllable magnetic field generating device provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
The controllable magnetic field generating device provided by the invention is designed in a double closed loop control mode that a voltage controller is matched with a current loop controller, and when a load is in a maximum load range, parameters such as the width, the period and the like of an output pulse are controlled by controlling the size of a current limiting value. The width, period and other parameters of the output pulse can be controlled through a control input interface connected to R6. The pair of magnetic poles are flexible and can be flexibly placed at any position in the sea, and a desired magnetic field excitation can be applied between the pair of magnetic poles. The invention introduces an analog current loop control loop on the basis of the traditional power supply topology to realize the double closed loop pure analog control of the voltage loop and the current loop, and the design architecture can reduce the control time delay of the equipment and improve the theoretical maximum output frequency of the equipment. The controllable magnetic field generating device of the invention is shown in figure 1:
the invention provides a controllable magnetic field generating device, which comprises: a voltage loop control circuit and a current loop control circuit,
the output of the current loop control circuit is externally connected with a pair of magnetic poles which can be arranged at any position of the ocean;
the current loop control circuit is controlled by the control input voltage and is used for converting the current output by the magnetic pole into a voltage signal in real time and comparing the voltage signal with the voltage output by the voltage loop control circuit so as to control the output to be fed back to the voltage loop control circuit;
and the voltage loop control circuit is used for controlling the voltage input to the current loop control circuit according to the feedback voltage, and realizing real-time reliable control of the voltage and the current of the pair of magnetic poles in a double closed loop structure mode with the current loop control circuit.
Referring to fig. 1, the voltage loop control circuit includes: the circuit comprises a voltage loop controller, a first mos tube Q1, a second mos tube Q2, a third mos tube Q3, a fourth mos tube Q4, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4 and a first inductor L1;
the maximum output current control tube pin Ilim of the voltage loop controller is connected with a first resistor R1, the other end of the first resistor R1 is grounded, and the maximum output current of the voltage loop controller is controlled by the configuration of the first resistor R1; the working frequency control pin Freq of the voltage loop controller is connected with a second resistor R2, the other end of the second resistor R2 is grounded, and the working frequency of the voltage loop controller is controlled by the configuration of the second resistor R2;
the gates of the first mos tube Q1, the second mos tube Q2, the third mos tube Q3 and the fourth mos tube Q4 are respectively connected with pins TG1, TG2, BG1 and BG2 of a voltage ring controller; the source of the first mos transistor Q1 is connected with the source of the third mos transistor Q3 and with the pin of SW1 of the voltage loop controller, the source of the second mos transistor Q2 is connected with the source of the fourth mos transistor Q4 and with the pin of SW2 of the voltage loop controller, and the first inductor L1 is connected between the source of the third mos transistor Q3 and the source of the fourth mos transistor Q4 as a freewheeling inductor; the drain of the first mos transistor Q1 is connected to one end of a first capacitor C1, one end of a second capacitor C2 and a power supply respectively, and the other ends of the first capacitor C1 and the second capacitor C2 are grounded; the drain of the second mos transistor Q2 is connected to one end of a third capacitor C3, one end of a fourth capacitor C4, one end Vout of a fourth resistor R4, and the positive input terminal IN + of the current loop control circuit, respectively, and the other ends of the third capacitor C3 and the fourth capacitor C4 are grounded; a VFB pin of the voltage loop controller is connected to a voltage signal which is connected to the current loop control circuit through the output resistor, and is connected with one end of the third resistor R3 and one end of the fourth resistor R4; the other end of the third resistor R3 is grounded; the power end of the voltage loop controller is connected with a power supply.
Wherein, electric current loop control circuit includes: the current loop controller comprises a current loop controller, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8, wherein the fifth resistor R5 is bridged between a positive input end + IN and a negative input end-IN of the current loop controller, the positive input end + IN of the current loop controller is connected with a voltage signal input by an output resistor of a voltage loop control circuit, the negative input end-IN of the current loop controller is connected with a current signal input by a pair of magnetic poles, the control end of the current loop controller is connected with a linear relation between an input voltage signal and a magnetic pole output magnetic field controlled by a sixth resistor R6 and a seventh resistor (R7), the input voltage signal is connected with one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7 and the control end of the current loop controller, and the other end of the seventh resistor R7 is grounded.
The first mos tube Q1, the second mos tube Q2, the third mos tube Q3 and the fourth mos tube Q4 are NMOS tubes, and the first capacitor C1 and the fourth capacitor C4 are electrolytic capacitors; the second capacitor C2 and the third capacitor C3 are ceramic chip capacitors. The voltage loop controller is of type LTC 3777. Assuming that the maximum output voltage of the controllable magnetic field generating device of the present invention can be set as the theoretical output voltage by modifying the ratio of R3 and R4, the output voltage V and R3 and R4 satisfy a relationship, that is, the relationship between the output voltage V of the voltage loop control circuit and the third resistor R3 and the fourth resistor R4 is: v =1.2 x 1+ R 4 /R 3 . Wherein R is 3 And R 4 Respectively, the resistance values of the third resistor R3 and the fourth resistor R4.
The model of the current loop controller is LMP8646, the control end of the current loop controller is connected with an input voltage signal Vctr controlled by a sixth resistor R6 and a seventh resistor (R7), and the principle of controlling the input voltage Vctr to control the output current I of the equipment is as follows: according to the system composition architecture of fig. 1, since the voltage of the LTC3777 chip feedback pin used by U1 is constantly equal to 1.2V, i.e., the voltage signal input to the VFB pin of the voltage loop controller is constantly 1.2V. The internal gain of the LMP8646 current limiter used in U2 has an equation relationship, i.e. the relationship among the input voltage signal at the control terminal of the current loop controller, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the internal peak current is expressed as
（V Ctr R 7 ）/(R 6+ R 7 ) + I * R 5 (R 6 //R 7 ) /5000= 1.2; wherein, denotes a multiplication number, R 5 、R 6 、R 7 The resistances of the fifth resistor R5, the sixth resistor R6 and the seventh resistor R7 are respectively shown,// shows that the two resistors are connected in parallel, and I shows the peak current flowing through the fifth resistor R5.
Increasing VCtr decreases ir 5, which decreases the peak current I through R5, whereas decreasing VCtr increases ir 5, which increases the peak current I. This achieves the purpose of controlling the output current I by VCtr, thereby producing a controlled magnetic field waveform at the pole.
As shown in fig. 1, C1, C2, C3 and C4 are used for filtering input and output power, where C1 and C4 are electrolytic capacitors, and C2 and C3 are ceramic capacitors, and the ripple jitter on the power line can be reduced by using the electrolytic capacitors and the ceramic capacitors in combination. Q1, Q2, Q3 and Q4 are N-channel MOSFETs, and the device can work in two working states of voltage rising and voltage falling by matching U1 with the control of Q1-Q4. L1 is a freewheeling inductor, R1 is used to set the maximum output current of U1, and R2 is used to set the operating frequency of U1. Different voltage division ratios of R3 and R4 and different values of R8 can be used for configuring the maximum output voltage of the controllable magnetic field generation device. R5 is used for configuring the theoretical maximum output current of the equipment, and R6 and R7 are used for configuring the linear relation between the control input voltage and the magnetic pole output magnetic field. The U2 is a current loop controller, which can convert the current output by the magnetic pole into a voltage signal in real time to participate in the voltage loop control loop of the U1, and the double closed loop structure of the current loop and the voltage loop can realize the real-time reliable control of the output voltage and the current. And the current loop and the voltage loop are completely controlled in an analog mode, so that the method has the characteristics of low control time delay and good dynamic response effect.
The controllable magnetic field generating device provided by the invention comprises a current loop control circuit and a voltage loop control circuit, wherein the current loop control circuit realizes a current-to-voltage function and is matched with a voltage loop control loop to carry out double closed loop pure analog control on the voltage loop and the current loop, a low time delay control loop of the output current of equipment can be realized, and the reduction of control time delay is beneficial to the improvement of the theoretical maximum output frequency. The invention does not need extra CPU to control the system, and only needs to add a current loop control circuit on the traditional power supply topology and control according to the current control loop circuit, thus realizing the control of the output magnetic field of the equipment, improving the integration level of the equipment and improving the power density.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A controllable magnetic field generating device, comprising: a voltage loop control circuit and a current loop control circuit,
the output of the current loop control circuit is externally connected with a pair of magnetic poles, and the magnetic poles can be arranged at any position of the sea;
the current loop control circuit is controlled by the control input voltage and is used for converting the current output by the magnetic pole into a voltage signal in real time and comparing the voltage signal with the voltage output by the voltage loop control circuit so as to control the output to be fed back to the voltage loop control circuit;
and the voltage loop control circuit is used for controlling the voltage input to the current loop control circuit according to the fed back voltage so as to realize real-time reliable control of the voltage and the current of the pair of magnetic poles in a double closed loop structure mode with the current loop control circuit.
2. The controllable magnetic field generating device of claim 1, wherein the voltage loop control circuit comprises: the circuit comprises a voltage loop controller, a first mos tube (Q1), a second mos tube (Q2), a third mos tube (Q3), a fourth mos tube (Q4), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4) and a first inductor (L1);
the maximum output current control pin (Ilim) of the voltage loop controller is connected with a first resistor (R1), the other end of the first resistor (R1) is grounded, and the maximum output current of the voltage loop controller is controlled by the configuration of the first resistor (R1); the working frequency control pin (Freq) of the voltage loop controller is connected with a second resistor (R2), the other end of the second resistor (R2) is grounded, and the working frequency of the voltage loop controller is controlled by the configuration of the second resistor (R2);
the grids of the first mos tube (Q1), the second mos tube (Q2), the third mos tube (Q3) and the fourth mos tube (Q4) are respectively connected with pins TG1, TG2, BG1 and BG2 of a voltage ring controller; the source electrode of the first mos tube (Q1) is connected with the source electrode of a third mos tube (Q3) and is connected with a pin of SW1 of the voltage loop controller, the source electrode of the second mos tube (Q2) is connected with the source electrode of a fourth mos tube (Q4) and is connected with a pin of SW2 of the voltage loop controller, and a first inductor (L1) serving as a follow current inductor is connected between the source electrode of the third mos tube (Q3) and the source electrode of the fourth mos tube (Q4) in a bridge connection mode; the drain electrode of the first mos tube (Q1) is connected with one end of a first capacitor (C1), one end of a second capacitor (C2) and a power supply respectively, and the other ends of the first capacitor (C1) and the second capacitor (C2) are grounded; the drain of the second mos tube (Q2) is connected to one end of a third capacitor (C3), one end of a fourth capacitor (C4), one end (Vout) of a fourth resistor (R4) and the positive input end (IN +) of the current loop control circuit, respectively, and the other ends of the third capacitor (C3) and the fourth capacitor (C4) are grounded; a VFB pin of the voltage loop controller is connected to a voltage signal which is connected to the current loop control circuit through the output resistor, and is connected with one end of a third resistor (R3) and one end of a fourth resistor (R4); the other end of the third resistor (R3) is grounded; the power end of the voltage loop controller is connected with a power supply.
3. The controllable magnetic field generating device according to claim 2, characterized in that the first mos tube (Q1), the second mos tube (Q2), the third mos tube (Q3) and the fourth mos tube (Q4) are NMOS tubes, and the first capacitor (C1) and the fourth capacitor (C4) are electrolytic capacitors; the second capacitor (C2) and the third capacitor (C3) are ceramic chip capacitors.
4. The controllable magnetic field generating device of claim 2, wherein the voltage loop controller is of type LTC 3777.
5. The controllable magnetic field generating device according to claim 2, wherein the voltage loop control circuit has an output voltage V with respect to the third resistor (R3) and the fourth resistor (R4) as follows:
V= 1.2*（1+R 4 /R 3 ）；
wherein R is 3 And R 4 Respectively, the resistance values of the third resistor (R3) and the fourth resistor (R4).
6. The controllable magnetic field generating device of claim 2, wherein the voltage signal input from the VFB pin of the voltage loop controller is constant at 1.2V.
7. The controllable magnetic field generating device of claim 1, wherein the current loop control circuit comprises: the high-voltage power supply comprises a current loop controller, a fifth resistor (R5), a sixth resistor (R6), a seventh resistor (R7) and an eighth resistor (R8), wherein the fifth resistor (R5) is connected between a positive input end (+ IN) and a negative input end (-IN) of the current loop controller IN a bridging manner, the positive input end (+ IN) of the current loop controller is connected with a voltage signal input by an output resistor of the voltage loop control circuit, the negative input end (-IN) of the current loop controller is connected with a current signal input by a pair of magnetic poles, the control end of the current loop controller is connected with a linear relation between an input voltage signal and a magnetic pole output magnetic field controlled by a sixth resistor (R6) and a seventh resistor (R7), the input voltage signal is connected with one end of the sixth resistor (R6), the other end of the sixth resistor (R6) is connected with one end of the seventh resistor (R7) and the control end of the current loop controller, the other end of the seventh resistor (R7) is grounded.
8. The controllable magnetic field generating device of claim 6, wherein the current loop controller is model number LMP 8646.
9. The controllable magnetic field generating device of claim 6, wherein the control terminal of the current loop controller is connected to control the input voltage signal (Vctr) through the sixth resistor (R6) and the seventh resistor (R7), and the input voltage signal of the control terminal of the current loop controller and the fifth resistor (R5), the sixth resistor (R6), and the seventh resistor (R7) are represented as:
（V Ctr R 7 ）/(R 6+ R 7 ) + I * R 5 (R 6 //R 7 )/5000=1.2；
wherein the content of the first and second substances, * denotes the multiplication number, R 5 、R 6 、R 7 Respectively, the resistances of a fifth resistor (R5), a sixth resistor (R6) and a seventh resistor (R7), wherein// represents that the two resistors are connected in parallel, and I represents the peak current flowing through the fifth resistor (R5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210674216.0A CN115113674A (en) | 2022-06-15 | 2022-06-15 | Controllable magnetic field generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210674216.0A CN115113674A (en) | 2022-06-15 | 2022-06-15 | Controllable magnetic field generating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115113674A true CN115113674A (en) | 2022-09-27 |
Family
ID=83328051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210674216.0A Pending CN115113674A (en) | 2022-06-15 | 2022-06-15 | Controllable magnetic field generating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115113674A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329924A (en) * | 2016-05-30 | 2017-01-11 | 武汉新芯集成电路制造有限公司 | System for improving load transient response performance |
| CN107769550A (en) * | 2016-08-19 | 2018-03-06 | 北京计算机技术及应用研究所 | A kind of two-way redundant parallel synchro switch buck DC D/C powers |
| CN208589918U (en) * | 2018-08-20 | 2019-03-08 | 深圳市讯和通科技有限公司 | A kind of traditional direct current booster circuit |
-
2022
- 2022-06-15 CN CN202210674216.0A patent/CN115113674A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329924A (en) * | 2016-05-30 | 2017-01-11 | 武汉新芯集成电路制造有限公司 | System for improving load transient response performance |
| CN107769550A (en) * | 2016-08-19 | 2018-03-06 | 北京计算机技术及应用研究所 | A kind of two-way redundant parallel synchro switch buck DC D/C powers |
| CN208589918U (en) * | 2018-08-20 | 2019-03-08 | 深圳市讯和通科技有限公司 | A kind of traditional direct current booster circuit |
Non-Patent Citations (1)
| Title |
|---|
| 赵天祥;高天德;刘培洲;张博强;刘建民: "小功率海流能发电能量收集***设计", 电子设计工程, vol. 28, no. 24, pages 70 - 75 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101626197B (en) | Efficiency improvement in power factor correction | |
| TWI622260B (en) | Buck-boost converter with ramp compensation and controller and control method thereof | |
| JP3488240B2 (en) | Full-wave buck-boost power converter | |
| US7139180B1 (en) | Three phase buck power converters having input current control | |
| CN103166490B (en) | System and method of feed forward for boost converters with improved power factor and reduced energy storage | |
| CN103197121B (en) | Current detection circuit and switch-type regulator provided with same | |
| WO1999041826A1 (en) | Pwm controller for use with open loop dc to ac converter | |
| RU2638021C2 (en) | Step-down voltage converter | |
| CN108173353B (en) | Constant-voltage constant-current ECPT system based on F-F/T variable topology network and parameter design method | |
| WO2020061727A1 (en) | Load current detection method and circuit for inductive switching power converter | |
| CN104902648A (en) | LED light-adjustment circuit with silicon controlled rectifier, and light-adjustment method | |
| CN104283430A (en) | Soft start switching power supply conversion device | |
| TW200533045A (en) | Voltage regulator | |
| CN114552987A (en) | BOOST circuit of self-adaptation slope compensation | |
| Hu et al. | Synchronous high step-down ratio non-isolated LED constant current driver based on improved Watkins-Johnson topology | |
| CN115113674A (en) | Controllable magnetic field generating device | |
| TW201737607A (en) | Interleaved boost converter comprising first to second transformers, first to second input capacitors, first to six diodes, and first to second switches and first to third output capacitors | |
| JPH0591729A (en) | Power supply device | |
| Matsuo et al. | A comparison of various DC-DC converters and their application to power factor correction | |
| Cheng et al. | A constant off-time controlled boost converter with adaptive current sensing technique | |
| Sutedjo et al. | Design of Battery Charging System as Supply of Rice Threshers in Tractor | |
| EP3195456B1 (en) | Constant on-time (cot) control in isolated converter | |
| CN112805911B (en) | Voltage conversion circuit and method and multi-phase parallel power supply system | |
| CN210007629U (en) | AC-AC voltage regulating circuit | |
| CA3001425C (en) | Method of dc voltage-pulse voltage conversion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |