CN111193425B - Load self-adaptive high-voltage broadband alternating-current power supply circuit - Google Patents
Load self-adaptive high-voltage broadband alternating-current power supply circuit Download PDFInfo
- Publication number
- CN111193425B CN111193425B CN202010028290.6A CN202010028290A CN111193425B CN 111193425 B CN111193425 B CN 111193425B CN 202010028290 A CN202010028290 A CN 202010028290A CN 111193425 B CN111193425 B CN 111193425B
- Authority
- CN
- China
- Prior art keywords
- circuit
- switch
- capacitor
- transformer
- matching
- 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.)
- Active
Links
- 238000005070 sampling Methods 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 93
- 230000003044 adaptive effect Effects 0.000 claims description 20
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
- H02M7/4818—Resonant converters with means for adaptation of resonance frequency, e.g. by modification of capacitance or inductance of resonance circuits
-
- 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)
- Inverter Devices (AREA)
Abstract
The invention discloses a load self-adaptive high-voltage broadband alternating current power supply circuit, which belongs to the fields of analysis instruments, biomedicine, environmental monitoring, scientific research and the like, and comprises a rectifying, filtering and voltage regulating circuit, a variable-frequency inverter circuit, a primary matching circuit, a matching transformer bank, a secondary matching circuit, an output voltage and current sampling circuit and a self-adaptive matching control circuit; the rectifier filter voltage regulating circuit is connected with the input end of the frequency conversion inverter circuit, the output end of the frequency conversion inverter circuit is connected with the input end of the primary matching circuit, the output end of the primary matching circuit is connected with the input end of the matching transformer bank, the output end of the matching transformer bank is connected with the input end of the secondary matching circuit, and the output end of the secondary matching circuit is connected with the input end of the output voltage current sampling circuit.
Description
Technical Field
The invention relates to a load self-adaptive high-voltage broadband alternating-current power supply circuit applied to the fields of analytical instruments, biomedicine, environmental monitoring, scientific research and the like.
Background
The current alternating current power supplies used by the plasma generator comprise a low-frequency high-voltage alternating current power supply, a high-frequency alternating current power supply and a radio-frequency high-voltage power supply.
The low-frequency high-voltage power supply has high reliability, but has large volume, low efficiency and narrow application range. The radio frequency high voltage power supply has high cost and low voltage, and even the reactor needs low pressure to seal the environment. While high frequency high voltage power supplies typically employ high voltage resonant ac power supplies or high voltage amplifiers.
Although the traditional high-voltage resonant alternating-current power supply can adjust frequency and voltage, the voltage gain is maximum near the central frequency, and the voltage is quickly attenuated after the frequency deviates from the central frequency, so that the load matching range is narrow during high-voltage output, the frequency can only be adjusted to the frequency suitable for the power supply under many conditions, and the circuit cannot realize any frequency adjustment within the frequency range of the circuit, so that the voltage and the frequency cannot meet the experimental requirements of a plasma generator; meanwhile, the output waveform deviating from the central frequency is easy to distort, the circuit cannot output wide voltage and wide frequency under the condition of wide load range, and the distorted waveform can cause great difference of experimental results under the condition of the same output peak voltage and frequency; moreover, because of the waveform distortion, the small gain deviated from the central frequency, the large gain of the central frequency and the like, the traditional high-voltage alternating-current resonant power supply is not suitable for adopting a closed-loop voltage control system, otherwise the control system is easy to oscillate. Therefore, the traditional high-voltage resonant alternating-current power supply also has the problems of low output precision, low input regulation rate and load regulation rate, narrow load matching range and the like.
The high-voltage amplifier power supply changes the load output voltage attenuation in the working range, so the input regulation rate and the load regulation rate are relatively high, but the power supply has high cost, low output voltage, low efficiency, large volume of a transformer during high-voltage output, low reliability of the power supply and can not be widely popularized in industrial application.
Disclosure of Invention
According to the problems in the prior art, the invention discloses a load self-adaptive high-voltage broadband alternating current power supply circuit, which comprises a rectifying, filtering and voltage regulating circuit, a frequency conversion inverter circuit, a primary matching circuit, a matching transformer bank, a secondary matching circuit, an output voltage and current sampling circuit and a self-adaptive matching control circuit, wherein the frequency conversion inverter circuit is connected with the primary matching circuit;
the rectification filtering voltage regulating circuit is connected with the input end of the variable frequency inverter circuit, the output end of the variable frequency inverter circuit is connected with the input end of the primary matching circuit, the output end of the primary matching circuit is connected with the input end of the matching transformer bank, the output end of the matching transformer bank is connected with the input end of the secondary matching circuit, and the output end of the secondary matching circuit is connected with the input end of the output voltage and current sampling circuit;
the self-adaptive matching control circuit is respectively connected with the rectifying, filtering and voltage regulating circuit, the frequency conversion inverter circuit, the primary matching circuit, the matching transformer bank, the secondary matching circuit and the output voltage and current sampling circuit.
Furthermore, the frequency conversion inverter circuit comprises a first capacitor, a second capacitor, a third capacitor, a first switch, a second switch, a third switch, a fourth switch and a first inductor;
one end of the first capacitor is connected with one end of the second capacitor, one end of the first switch and one end of the third switch respectively;
the other end of the first capacitor is respectively connected with one end of the third capacitor, one end of the second switch and one end of the fourth switch;
the other end of the second capacitor and the other end of the third capacitor are both connected with one end of the first inductor;
the other end of the first switch is connected with the other end of the second switch;
the other end of the first inductor is connected with the matching transformer bank;
the other end of the third switch and the other end of the fourth switch are both connected with the primary matching circuit.
Further, the primary matching circuit comprises a fourth capacitor, a fifth switch, a second inductor, a third inductor, a fourth inductor and a first change-over switch;
one end of the fourth capacitor is connected with one end of the fifth capacitor in parallel and then is connected with the matching voltage bank;
the other end of the fourth capacitor is connected with one end of the second inductor and the first end of the first switch;
the other end of the fifth capacitor is connected with one end of the fifth switch;
the other end of the fifth switch is connected with one end of the second inductor and the first end of the first change-over switch;
one end of the second inductor is connected with the first end of the first change-over switch;
the other end of the second inductor is connected with one end of the third inductor and the second end of the first change-over switch;
one end of the third inductor is connected with the second end of the first change-over switch;
the other end of the third inductor is connected with one end of the fourth inductor and the third end of the change-over switch;
one end of the fourth inductor is connected with the third end of the change-over switch;
the other end of the fourth inductor is connected with the fourth end of the change-over switch, and the fourth inductor and the fourth end of the change-over switch are both connected with the variable-frequency inverter circuit.
Further, the matching transformer bank comprises a first transformer, a second transformer, a sixth switch, a first parallel switch and a second parallel switch;
the first end of the first transformer is connected with one end of the first parallel switch in parallel;
the fourth end of the first transformer is connected with one end of the primary matching circuit;
the second end of the first transformer is connected with one end of the sixth switch and one end of the second parallel switch;
the third end of the first transformer is connected with the fourth end of the second transformer;
the other end of the sixth switch is connected with the first end of the second transformer and the other end of the first parallel switch;
the second end of the second transformer is connected with the other end of the second parallel switch, and the second end of the second transformer and the second parallel switch are both connected with the other end of the first inductor;
and the third end of the second transformer is connected with the output voltage and current sampling circuit.
Further, the secondary matching circuit includes a seventh switch and a sixth capacitor;
one end of the seventh switch is connected with the fourth end of the first transformer and the output voltage and current sampling circuit respectively;
the other end of the seventh switch is connected with one end of the sixth capacitor;
and the other end of the sixth capacitor is connected with the output voltage and current sampling circuit.
Further, the output voltage and current sampling circuit comprises a seventh capacitor, an eighth capacitor (222), a current transformer, a rectifier, a ninth capacitor and a resistor;
one end of the seventh capacitor is connected with one end of the seventh switch;
the other end of the seventh capacitor is connected with one end of the eighth capacitor;
the other end of the eighth capacitor is connected with the second end of the current transformer;
the first end of the current transformer is also connected with the third end of the second transformer,
the third end and the fourth end of the current transformer are respectively connected with the rectifier;
and the two ends of the rectifier are connected with the two ends of the resistor in parallel, and the two ends of the resistor are also connected with the two ends of the ninth capacitor in parallel.
Further, the adaptive matching control circuit comprises an adaptive controller, and the adaptive controller adopts closed-loop control or open-loop control.
Due to the adoption of the technical scheme, the load self-adaptive high-voltage broadband alternating-current power supply circuit can automatically adapt and match the load within a wide frequency range by changing the resonance parameters of the matching circuit, changing the connection mode of the matching transformer bank, switching an open loop and a closed loop and other modes, and can ensure that the circuit works in a stable working state within a broadband range; the closed-loop control of the adaptive controller enables the circuit to have very high input regulation rate and load regulation rate; the open loop control of the adaptive controller enables the circuit to have a more stable working state; the matching transformer bank connection mode is changed to enable the power circuit to have high-voltage output in a wide frequency range; therefore, the invention has low circuit cost, high voltage, high efficiency and high reliability under the condition of wide load range in a laboratory, and can realize stable output of wide voltage and wide frequency, so the invention not only can be widely popularized and used in the laboratory due to the adaptive matching characteristic of the broadband, but also can be widely applied to the industry due to the low cost and high reliability of the output structure of the single frequency conversion circuit and the transformer bank.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial component circuit diagram of the present invention.
In the figure: 101. a rectification filtering voltage regulating circuit, 102, a frequency conversion inverter circuit, 103, a primary matching circuit, 104, a matching transformer bank, 105, a secondary matching circuit, 106, an output voltage and current sampling circuit, 107, an adaptive matching control circuit, 108, an incoming line circuit, 109, an outgoing line circuit, 201, a first capacitor, 202, a first switch, 203, a second switch, 204, a third switch, 205, a fourth switch, 206, a third capacitor, 207, a second capacitor, 208, a first inductor, 209, a fourth capacitor, 210, a fifth capacitor, 211, a fifth switch, 212, a second inductor, 213, a third inductor, 214, a fourth inductor, 215, a first switch, 216, a sixth switch, 217, a first transformer, 218, a second transformer, 219, a seventh switch, 220, a sixth capacitor, 221, a seventh capacitor, 222, an eighth capacitor, 223, a rectifier, 224, a resistor, 225, a rectifier, A ninth capacitor, 226, current transformer; 227. a first parallel switch 228, a second parallel switch.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
the invention provides a load self-adaptive high-voltage broadband alternating-current power supply circuit, which can realize that the output of the circuit automatically adapts to the change of a matched load within a wide frequency range when the load changes so as to ensure that the circuit works within a stable working range. The basic functions of the device also comprise amplitude adjustment, power adjustment and frequency adjustment, wherein the amplitude adjustment range is 1 kV-30 kV; the frequency adjusting range is 1kHz-50 kHz; the rated power of the circuit can reach 10 kW.
FIG. 1 is a schematic structural view of the present invention; a load self-adaptive high-voltage broadband alternating current power supply circuit comprises a rectification filtering voltage regulating circuit 101, a frequency conversion inverter circuit 102, a primary matching circuit 103, a matching transformer bank 104, a secondary matching circuit 105, an output voltage and current sampling circuit 106 and a self-adaptive matching control circuit 107, wherein the rectification filtering voltage regulating circuit 101, the frequency conversion inverter circuit 102, the primary matching circuit 103, the matching transformer bank 104, the secondary matching circuit 105, the output voltage and current sampling circuit and the self-adaptive matching control circuit 107 are used for realizing input rectification filtering;
the rectification filtering voltage regulating circuit 101 is connected with an input end of the variable frequency inverter circuit 102, an output end of the variable frequency inverter circuit 102 is connected with an input end of the primary matching circuit 103, an output end of the primary matching circuit 103 is connected with an input end of the matching transformer bank 104, an output end of the matching transformer bank 104 is connected with an input end of the secondary matching circuit 105, and an output end of the secondary matching circuit 105 is connected with an input end of the output voltage current sampling circuit 106;
the adaptive matching control circuit 107 is respectively connected with the rectifying, filtering and voltage regulating circuit 101, the frequency conversion inverter circuit 102, the primary matching circuit 103, the matching transformer bank 104, the secondary matching circuit 105 and the output voltage and current sampling circuit 106;
the circuit realizes the rectification and filtering of input through the rectification, filtering and voltage regulation circuit 101, and can control the rectification, filtering and voltage regulation circuit 101 through the self-adaptive matching control circuit 107 so as to finish voltage regulation; the direct-current voltage of the rectification filter voltage regulating circuit 101 is inverted through the frequency conversion inverter circuit 102, and the frequency conversion inverter circuit 102 is subjected to frequency conversion control through the self-adaptive matching control circuit 107 so as to complete frequency modulation; primary matching of the plasma reactor is accomplished by a primary matching circuit 103; transformer matching of the plasma reactor is accomplished by a matching transformer bank 104; secondary matching of the plasma reactor is accomplished by a secondary matching circuit 103; detection at the output is achieved by the output voltage current sampling circuit 106 and the circuit is protected by the adaptive matching control circuit 107.
The circuit also comprises an electric incoming line circuit 108 and an outgoing line circuit 109, and is connected with a plasma reactor load when in use, and the rectification, filtering and voltage regulation circuit 101 is connected with the incoming line circuit 108 and the variable frequency inverter circuit 102 in series; the output voltage and current sampling circuit 106 is connected to the outlet circuit 109.
The adaptive matching control circuit 107 mainly comprises an auxiliary power supply circuit, a driving circuit, a control circuit and a signal setting and protecting circuit; the adaptive matching control circuit 107 is a core control circuit of the power supply circuit. The control function of providing an auxiliary power supply, setting a system parameter detection feedback signal, protecting the power supply and enabling the power supply to be self-adaptive to the load is achieved. Basic parameters such as output frequency, amplitude, duty ratio and the like can be adjusted and controlled; and closed-loop control and open-loop control switching can be realized. The matching function of the wide frequency and the load of the circuit is realized by combining various matching circuits.
Fig. 2 is a partial circuit diagram of the present invention, wherein the inverter circuit 102 includes a first capacitor 201, a second capacitor 207, a third capacitor 206, a first switch 202, a second switch 203, a third switch 204, a fourth switch 205, and a first inductor 208;
one end of the first capacitor 201 is connected to one end of the second capacitor 207, one end of the first switch 202, and one end of the third switch 204, respectively;
the other end of the first capacitor 201 is connected to one end of the third capacitor 206, one end of the second switch 203 and one end of the fourth switch 205 respectively;
the other end of the second capacitor 207 and the other end of the third capacitor 206 are both connected to one end of the first inductor 208;
the other end of the first switch 202 is connected with the other end of the second switch 203;
the other end of the first inductor 208 is connected to the matching transformer bank 104;
the other end of the third switch 204 and the other end of the fourth switch 205 are both connected to the primary matching circuit 103.
The first capacitor 201 is a filter capacitor, the first inductor 208 is a resonance inductor, and the resonance inductor plays a role in serial connection and portrait, blocks interference of high-voltage output, and protects the variable-frequency inverter circuit 102.
Further: the primary matching circuit 103 completes the adaptive matching of the load by adjusting the resonance parameter of the primary, and the circuit comprises a fourth capacitor 209, a fifth capacitor 210, a fifth switch 211, a second inductor 212, a third inductor 213, a fourth inductor 214 and a first switch 215;
one end of the fourth capacitor 209 and one end of the fifth capacitor 210 are connected in parallel and then connected with the matching voltage bank 104;
the other end of the fourth capacitor 209 is connected to one end of the second inductor 212 and the first end of the first switch 215;
the other end of the fifth capacitor 210 is connected to one end of the fifth switch 211;
the other end of the fifth switch 211 is connected to one end of the second inductor 212 and the first end of the first switch 215;
one end of the second inductor 212 is connected to a first end of the first switch 215;
the other end of the second inductor 212 is connected to one end of the third inductor 213 and the second end of the first switch 215;
one end of the third inductor 213 is connected to the second end of the first switch 215;
the other end of the third inductor 213 is connected to one end of the fourth inductor 214 and the third end of the switch 215;
one end of the fourth inductor 214 is connected to the third end of the switch 215;
the other end of the fourth inductor 214 is connected to the fourth terminal of the switch 215, and the fourth inductor 214 and the fourth terminal of the switch 215 are both connected to the inverter circuit 102.
Further, the matching transformer bank 104 realizes load matching by changing the series-parallel connection mode of the primary of the transformer and the number of the transformers, and the matching transformer bank 104 comprises a first transformer 217, a second transformer 218, a sixth switch 216, a first parallel switch 227 and a second parallel switch 228;
a first terminal of the first transformer 217 is connected in parallel with one terminal of the first parallel switch 227;
the fourth end of the first transformer 217 is connected to one end of the primary matching circuit 103;
a second terminal of the first transformer 217 is connected to one terminal of the sixth switch 216 and one terminal of the second parallel switch 228;
the third end of the first transformer 217 is connected with the fourth end of the second transformer 218;
the other end of the sixth switch 216 is connected to the first end of the second transformer 218 and the other end of the first parallel switch 227;
the second terminal of the second transformer 218 is connected to the other terminal of the second parallel switch 228, and the second terminal of the second transformer 218 and the second parallel switch 228 are both connected to the other terminal of the first inductor 208;
the third terminal of the second transformer 218 is connected to the output voltage and current sampling circuit.
Further: the secondary matching circuit 105 completes the adaptive matching of the load by adjusting the equivalent capacitance of the output, and the secondary matching circuit 105 comprises a seventh switch 219 and a sixth capacitor 220;
one end of the seventh switch 219 is connected to the fourth terminal of the first transformer 217 and the output voltage and current sampling circuit 106;
the other end of the seventh switch 219 is connected to one end of the sixth capacitor 220;
the other end of the sixth capacitor 220 is connected to the output voltage and current sampling circuit 106.
Further: the output voltage and current sampling circuit 106 comprises a seventh capacitor 221, an eighth capacitor 222, a current transformer 226, a rectifier 223, a ninth capacitor 225 and a resistor 224; the seventh capacitor 221 is a voltage dividing capacitor that completes a high voltage sampling function, the eighth capacitor 222 is a sampling capacitor, and one end of the seventh capacitor 221 is connected to one end of the seventh switch 219;
the other end of the seventh capacitor 221 is connected to one end of the eighth capacitor 222;
the other end of the eighth capacitor 222 is connected to one end of the current transformer 226;
one end of the current transformer 226 is also connected to the other end of the second transformer 218,
the other end of the current transformer 226 is connected with the rectifier 223;
both ends of the rectifier 223 are connected in parallel with both ends of the resistor 224, and both ends of the resistor 224 are also connected in parallel with both ends of the ninth capacitor 225.
Further: the adaptive matching control circuit 107 includes an adaptive controller that employs closed-loop control or open-loop control.
In this embodiment 1, the voltage dividing capacitor 221 is 10pF, the sampling capacitor is 10000pF, and the ac signal is attenuated by 1000 times.
The circuit self-adaptation matches the working process, and the circuit 109 that goes out connects the plasma reactor, then sets for the expected output voltage through self-adaptation matching control circuit 107, frequency, protection voltage, protection current, maximum power, and open loop or closed loop mode, and inputs plasma reference parameter. The system works through a primary matcher, a secondary matcher and a matching transformer bank of the adaptive matching controller, the output amplitude is adjusted to be zero, the frequency is adjusted to be the maximum frequency, and the system frequency sweep detects the output voltage through an output voltage and current sampling circuit 106 so as to judge the center frequency and estimate the distribution parameters of the reactor. The input rectifying, filtering, voltage regulating and voltage current sampling circuit and the output voltage current sampling circuit detect the power circuit and protect the circuit through the protection circuit of the adaptive matching control circuit 107. The parameters of the primary matcher, the parameters of the secondary matcher and the parameters of the transformer bank are adjusted by the adaptive matching controller 107, and the frequency is adjusted to a set frequency by adjusting the variable frequency inverter circuit 102. The amplitude of the output voltage is adjusted by adjusting the input rectifying, filtering, voltage regulating and voltage and current sampling circuit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A load self-adaptive high-voltage broadband alternating current power supply circuit is characterized in that: the device comprises a rectification filtering voltage regulating circuit (101), a frequency conversion inverter circuit (102), a primary matching circuit (103), a matching transformer bank (104), a secondary matching circuit (105), an output voltage and current sampling circuit (106) and a self-adaptive matching control circuit (107);
the rectification filtering voltage regulating circuit (101) is connected with the input end of the variable frequency inverter circuit (102), the output end of the variable frequency inverter circuit (102) is connected with the input end of the primary matching circuit (103), the output end of the primary matching circuit (103) is connected with the input end of the matching transformer bank (104), the output end of the matching transformer bank (104) is connected with the input end of the secondary matching circuit (105), and the output end of the secondary matching circuit (105) is connected with the input end of the output voltage and current sampling circuit (106);
the self-adaptive matching control circuit (107) is respectively connected with the rectifying, filtering and voltage regulating circuit (101), the frequency conversion inverter circuit (102), the primary matching circuit (103), the matching transformer bank (104), the secondary matching circuit (105) and the output voltage and current sampling circuit (106);
the matching transformer bank (104) comprises a first transformer (217), a second transformer (218), a sixth switch (216), a first parallel switch (227) and a second parallel switch (228);
a first end of the first transformer (217) is connected in parallel with one end of the first parallel switch (227);
the fourth end of the first transformer (217) is connected with one end of the primary matching circuit (103);
a second terminal of the first transformer (217) is connected with one terminal of the sixth switch (216) and one terminal of the second parallel switch (228);
the third end of the first transformer (217) is connected with the fourth end of the second transformer (218);
the other end of the sixth switch (216) is connected with the first end of the second transformer (218) and the other end of the first parallel switch (227);
the variable frequency inverter circuit (102) comprises a first inductor (208);
the second end of the second transformer (218) is connected with the other end of the second parallel switch (228), and the second end of the second transformer (218) and the second parallel switch (228) are both connected with one end of a first inductor (208);
the third end of the second transformer (218) is connected with the output voltage and current sampling circuit (106);
the adaptive matching control circuit (107) comprises an adaptive controller, which employs closed-loop control or open-loop control.
2. The circuit of claim 1, further comprising:
the variable-frequency inverter circuit (102) further comprises a first capacitor (201), a second capacitor (207), a third capacitor (206), a first switch (202), a second switch (203), a third switch (204) and a fourth switch (205);
one end of the first capacitor (201) is connected with one end of the second capacitor (207), one end of the first switch (202) and one end of the third switch (204) respectively;
the other end of the first capacitor (201) is respectively connected with one end of the third capacitor (206), one end of the second switch (203) and one end of the fourth switch (205);
the other end of the second capacitor (207) and the other end of the third capacitor (206) are both connected with the other end of the first inductor (208);
the other end of the first switch (202) is connected with the other end of the second switch (203);
one end of the first inductor (208) is connected with the matching transformer bank (104);
the other end of the third switch (204) and the other end of the fourth switch (205) are both connected with the primary matching circuit (103).
3. The circuit of claim 1, further comprising:
the primary matching circuit (103) comprises a fourth capacitor (209), a fifth capacitor (210), a fifth switch (211), a second inductor (212), a third inductor (213), a fourth inductor (214) and a first change-over switch (215);
one end of the fourth capacitor (209) and one end of the fifth capacitor (210) are connected in parallel and then are connected with the matching transformer bank (104);
the other end of the fourth capacitor (209) is connected with one end of the second inductor (212) and the first end of the first selector switch (215);
the other end of the fifth capacitor (210) is connected with one end of the fifth switch (211);
the other end of the fifth switch (211) is connected with one end of the second inductor (212) and the first end of the first switch (215);
one end of the second inductor (212) is connected with a first end of the first switch (215);
the other end of the second inductor (212) is connected with one end of the third inductor (213) and the second end of the first switch (215);
one end of the third inductor (213) is connected to the second end of the first switch (215);
the other end of the third inductor (213) is connected with one end of the fourth inductor (214) and the third end of the switch (215);
one end of the fourth inductor (214) is connected with the third end of the first switch (215);
the other end of the fourth inductor (214) is connected with the fourth end of the first switch (215), and the fourth inductor (214) and the fourth end of the first switch (215) are both connected with the variable-frequency inverter circuit (102).
4. The circuit of claim 1, further comprising: the secondary matching circuit (105) comprises a seventh switch (219) and a sixth capacitance (220);
one end of the seventh switch (219) is connected to the fourth end of the first transformer (217) and the output voltage and current sampling circuit (106), respectively;
the other end of the seventh switch (219) is connected with one end of the sixth capacitor (220);
the other end of the sixth capacitor (220) is connected with the output voltage and current sampling circuit (106).
5. The circuit of claim 4, further comprising: the output voltage and current sampling circuit (106) comprises a seventh capacitor (221), an eighth capacitor (222), a current transformer (226), a rectifier (223), a ninth capacitor (225) and a resistor (224);
one end of the seventh capacitor (221) is connected with one end of a seventh switch (219);
the other end of the seventh capacitor (221) is connected with one end of the eighth capacitor (222);
the other end of the eighth capacitor (222) is connected with the second end of the current transformer (226);
the first terminal of the current transformer (226) is further connected to the third terminal of the second transformer (218),
the third end and the fourth end of the current transformer (226) are respectively connected with the rectifier (223);
two ends of the rectifier (223) are connected in parallel with two ends of the resistor (224), and two ends of the resistor (224) are also connected in parallel with two ends of the ninth capacitor (225).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028290.6A CN111193425B (en) | 2020-01-10 | 2020-01-10 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010028290.6A CN111193425B (en) | 2020-01-10 | 2020-01-10 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111193425A CN111193425A (en) | 2020-05-22 |
| CN111193425B true CN111193425B (en) | 2022-02-15 |
Family
ID=70710841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010028290.6A Active CN111193425B (en) | 2020-01-10 | 2020-01-10 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111193425B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195825Y (en) * | 1994-03-14 | 1995-04-26 | 王钟秀 | Semiconductor inverter and load matching box |
| CN102005937A (en) * | 2009-09-01 | 2011-04-06 | 北京石油化工学院 | Adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and control method thereof |
| CN102781129A (en) * | 2012-07-23 | 2012-11-14 | 淄博助友石油化工有限公司 | Self-adaptive electro-magnetic induction heating controller |
| CN103326685A (en) * | 2013-06-04 | 2013-09-25 | 湖南大学 | Radio-frequency antenna impedance self-adaption matching device and method with quantum algorithm applied |
| CN209562835U (en) * | 2018-12-31 | 2019-10-29 | 洛阳用功感应加热设备有限公司 | A kind of high-power broadband series resonant inverter |
| CN209730906U (en) * | 2019-05-20 | 2019-12-03 | 温州大学 | It is a kind of based on phased inductance capacitance come the wireless electric energy transmission device of self-adapting tuning |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101398548B (en) * | 2007-09-28 | 2010-05-26 | 群康科技(深圳)有限公司 | Electric power circuit and LCD |
-
2020
- 2020-01-10 CN CN202010028290.6A patent/CN111193425B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195825Y (en) * | 1994-03-14 | 1995-04-26 | 王钟秀 | Semiconductor inverter and load matching box |
| CN102005937A (en) * | 2009-09-01 | 2011-04-06 | 北京石油化工学院 | Adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and control method thereof |
| CN102781129A (en) * | 2012-07-23 | 2012-11-14 | 淄博助友石油化工有限公司 | Self-adaptive electro-magnetic induction heating controller |
| CN103326685A (en) * | 2013-06-04 | 2013-09-25 | 湖南大学 | Radio-frequency antenna impedance self-adaption matching device and method with quantum algorithm applied |
| CN209562835U (en) * | 2018-12-31 | 2019-10-29 | 洛阳用功感应加热设备有限公司 | A kind of high-power broadband series resonant inverter |
| CN209730906U (en) * | 2019-05-20 | 2019-12-03 | 温州大学 | It is a kind of based on phased inductance capacitance come the wireless electric energy transmission device of self-adapting tuning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111193425A (en) | 2020-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7821801B2 (en) | Power factor correction method for AC/DC converters and corresponding converter | |
| TWI606010B (en) | Compact, configurable power supply for energizing ozone-producing cells | |
| CN1694329A (en) | Double-tunnel filter based on controllable reactor | |
| CN113162167B (en) | Wireless charging system with constant-current and constant-voltage automatic switching function | |
| CN108199494B (en) | Gain-adjustable active load wireless charging device and adjusting method thereof | |
| CN213243820U (en) | Gain-adjustable resonant transformation device | |
| CN104917193A (en) | Hybrid dynamic reactive power compensation device with resonance suppression function and method | |
| CN111740504B (en) | Wireless charging control method and wireless charging system | |
| CN108521177B (en) | Adjusting device for resonance converter based on additional coupling inductance and control method | |
| US5805032A (en) | Electrical filter for attenuating oscillations in AC mains | |
| CN210899713U (en) | Composite resonance heating circuit | |
| CN107395077A (en) | A kind of adjustable impedance device of plug and play | |
| Simonazzi et al. | Conducted emission analysis of a near-field wireless power transfer system | |
| CN112532198B (en) | Radio frequency ion source impedance matching method and device | |
| CN111193425B (en) | Load self-adaptive high-voltage broadband alternating-current power supply circuit | |
| CN1078834A (en) | The induction coil that is used for the available switch control of heavy current | |
| CN113098149B (en) | Power self-adaptive induction power taking equipment | |
| KR100666509B1 (en) | Harmonic filter | |
| CN110662320A (en) | Composite resonance heating circuit and frequency control method thereof | |
| CN112383062A (en) | Automatic tuning structure of passive power filter | |
| Vulfovich et al. | Output voltage feedback control method for series-series compensated inductive wireless power transfer link with varying primary capacitor | |
| CN113067337A (en) | Multifunctional electric energy quality controller | |
| CN104269850A (en) | Control method for active harmonic resistor applied to shunt capacitor | |
| US20130300381A1 (en) | Power converter apparatus | |
| WO2009091273A1 (en) | Corona discharge treater with resonant voltage multiplication |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |