CN113206598A - Series resonant constant-current charging power supply - Google Patents
Series resonant constant-current charging power supply Download PDFInfo
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- CN113206598A CN113206598A CN202110645499.1A CN202110645499A CN113206598A CN 113206598 A CN113206598 A CN 113206598A CN 202110645499 A CN202110645499 A CN 202110645499A CN 113206598 A CN113206598 A CN 113206598A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
- H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
- H02M5/10—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers
- H02M5/12—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using transformers for conversion of voltage or current amplitude only
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention provides a design of a series resonance type constant current charging power supply, which comprises a preprocessing component, a voltage regulating component and a voltage regulating component, wherein the preprocessing component is used for converting three-phase alternating current voltage in an urban power grid into direct current voltage; the IGBT full-bridge switch module is connected with the preprocessing component through a circuit and used for receiving the direct-current voltage output by the preprocessing component and converting the direct-current voltage into high-frequency alternating-current voltage; the input end of the conversion component is connected with the IGBT full-bridge switch module and is used for converting high-frequency alternating-current voltage and outputting direct-current high voltage; the feedback assembly is connected with the conversion assembly circuit and used for acquiring the direct-current high-voltage signal and the current signal output by the conversion assembly; and the input end of the control component is connected with the feedback component circuit, the output end of the control component is connected with the IGBT full-bridge switch module circuit, the direct-current high-voltage signal collected by the feedback component is received, and the control signal is generated to control the on and off of the IGBT full-bridge switch module. The invention can adapt to wide-range load change, is suitable for charging a high-capacity load energy storage capacitor, and has high safety and reliability.
Description
Technical Field
The invention relates to a capacitor charging power supply applied to a pulse power system with a capacitor as an energy storage unit, in particular to a series resonance type constant-current charging power supply for providing kilovolt charging voltage.
Background
The pulse power system is an electric device which can obtain short pulse and high power by time compression of pulse energy, and the high-voltage constant-current charging power supply is one of important components of the pulse power system, and is used for charging a large-capacity energy storage capacitor according to application requirements so as to provide initial energy for the pulse power system. At present, there are three mature capacitor charging technologies, including charging with a high-voltage dc power supply with a current-limiting resistor, power frequency resonance charging and charging with a high-frequency switching converter. The charging of the high-voltage direct-current power supply with the current-limiting resistor is to charge the energy-storage capacitor through the charging current-limiting resistor. The mode can ensure that the voltage of the two ends of the capacitor is always equal to the voltage of the front direct-current source when the capacitor is not discharged, namely, the capacitor can be updated all the time. This technique is simple and reliable, has low cost, but has obvious disadvantages: the charging efficiency is low, generally not more than 50%, so the method is only suitable for occasions with low repetition frequency. The power frequency resonance charging is to boost the power frequency alternating current power supply by a transformer and then charge a filter capacitor by a rectifier bridge so as to generate direct current high voltage. When the thyristor is triggered to conduct, energy is transferred to the load capacitor through the inductor and the diode. The circuit is simple and effective, the charging voltage is high, the frequency control is convenient, but the thyristor is used as a switching device to determine that the circuit cannot be in a refresh mode. In addition, it is difficult to achieve good voltage stabilization.
With the development of high-frequency high-power switching devices and modern control theory, high frequency has become the development direction of various power supplies. The high frequency switching converter charges the energy storage capacitor with a plurality of pulse trains, and the charging pulses generated in each switching cycle transfer a very small portion of the energy to the load, thereby enabling a relatively high charging accuracy and charging efficiency. The energy transfer can be controlled by adjusting the switch on-time or the working frequency, and the application of the feedback technology enables the switching device to be switched on or off in time, so that the power supply can work in a refresh mode under the high-frequency condition, and the voltage loss on the capacitor is continuously compensated. Because the working frequency is higher, the volume of the transformer is greatly reduced, and the volume and the cost of the system are reduced.
Disclosure of Invention
The invention aims to provide a series resonant constant-current charging power supply to solve the charging problem of a high-capacity energy storage capacitor.
To achieve the above object, the present invention is achieved by the following technical solutions, which include
The pretreatment assembly is connected with an urban power grid and used for converting three-phase alternating voltage in the urban power grid into direct current voltage;
the IGBT full-bridge switch module is connected with the preprocessing component through a circuit and used for receiving the direct-current voltage output by the preprocessing component and converting the direct-current voltage into high-frequency alternating-current voltage;
the input end of the conversion component is connected with the IGBT full-bridge switch module through a circuit and used for converting high-frequency alternating-current voltage and outputting direct-current high voltage;
the feedback assembly is connected with the conversion assembly through a circuit and used for acquiring the direct-current high-voltage signal and the current signal output by the conversion assembly;
and the input end of the control component is connected with the feedback component through a circuit, and the output end of the control component is connected with the IGBT full-bridge switch module through a circuit, receives the direct-current high-voltage signal collected by the feedback component, and generates a control signal to control the on and off of the IGBT full-bridge switch module.
Preferably, the pre-treatment assembly comprises: the EMI filter module is connected with the urban power grid and used for carrying out high-frequency filtering on three-phase alternating current in the urban power grid; and the low-voltage rectifying and filtering module comprises a rectifying submodule and a filtering capacitor submodule, the input end of the low-voltage rectifying and filtering module is connected with the EMI filter module through a circuit, the output end of the low-voltage rectifying and filtering module is connected with the IGBT full-bridge switch module through a circuit, and the low-voltage rectifying and filtering module is used for converting three-phase alternating current into direct current.
Preferably, the conversion assembly comprises: the resonant capacitor inductance module is connected with the IGBT full-bridge switch module circuit and used for transmitting high-frequency alternating-current voltage; the high-voltage transformer module is connected with the resonance capacitance and inductance module in series and used for realizing the lifting of high-frequency alternating-current voltage; and the high-frequency rectifying and filtering module is used for processing the high-frequency alternating voltage lifted by the high-voltage transformer module, filtering high-frequency signals in the high-frequency alternating voltage signals and outputting the actually required direct-current high voltage.
Preferably, the feedback assembly comprises: the high-voltage sampling module is connected with the high-frequency rectifying and filtering module in a circuit and is used for collecting the direct-current high voltage output by the high-frequency rectifying and filtering module; and the current sampling module is connected with the resonant inductance-capacitance module and is used for collecting current from the resonant capacitance-inductance module.
Preferably, the control assembly comprises: the input end of the control circuit module is respectively connected with the high-voltage sampling module and the current sampling module and is used for receiving the collected voltage and current and generating a driving pulse signal; and the isolation driving circuit module is arranged between the IGBT full-bridge switch module and the control circuit module through circuit connection and is used for transmitting and controlling the switching voltage of the IGBT full-bridge switch module.
Preferably, the IGBT full-bridge switching module includes a plurality of switching circuits connected by a circuit, each switching circuit is formed by connecting an IGBT device, a diode device, and a capacitor device in parallel, and controls the circuit to be turned on as a switching device of the series resonant constant-current charging power supply.
Preferably, the input end of the isolation driving circuit module is connected with the control circuit module for receiving the control driving pulse signal, and the output end of the isolation driving circuit module is connected with the gate of each IGBT device in the IGBT full-bridge switch module for transmitting the switching voltage and further controlling the switching frequency of the IGBT device.
Preferably, the feedback component, the resonant capacitor inductor module, the IGBT full-bridge switch module, the control circuit module, and the isolation driving circuit module together form a phase-shifted full-bridge zero-voltage current type switch working circuit to reduce turn-on and turn-off losses of the IGBT device.
Preferably, after the three-phase commercial alternating current is filtered by the EMI filter module to obtain high-frequency signals, the alternating voltage is converted into direct current voltage by the low-voltage rectification filter module, the direct current voltage is converted into high-frequency alternating voltage by the IGBT full-bridge switch module, and then the high-frequency alternating voltage is efficiently transmitted into the high-voltage transformer module by the resonance capacitor inductance module to be boosted; and finally, the voltage output by the high-voltage transformer module is processed by the high-frequency rectification filter module and then is output in series to obtain the actually required direct-current high voltage.
Preferably, the high-voltage sampling module carries out high-voltage sampling from the high-frequency rectification filter module, and the current sampling module carries out current sampling from the resonance capacitor inductance module, and transmit the high-frequency alternating voltage and the high-frequency current signal obtained to the control circuit module, the control circuit module judges and processes according to the reference voltage of setting for, produce the drive pulse signal of different frequencies, and transmit and keep apart the drive circuit module, keep apart the drive circuit module and transmit switching voltage to IGBT full bridge switch module, and then realize the control to IGBT full bridge switch module.
In summary, compared with the prior art, the series resonant constant-current charging power supply provided by the invention has the following beneficial effects: (1) the device can adapt to wide-range load change and is suitable for charging a high-capacity load energy storage capacitor; (2) the device can still work safely and reliably under the condition of short circuit of output or short circuit of ignition. (3) The switching loss is small and the efficiency is high; (4) the harmonic interference to the power grid is small; (5) the circuit has extremely fast overload protection and overvoltage protection capabilities, and the output voltage can not rise when the load is opened and is stabilized on a fixed level; (6) has the functions of constant current and voltage regulation.
Drawings
Fig. 1 is a frame diagram of a series resonant constant-current charging power supply according to the present invention;
fig. 2 is a main topology of the series resonant constant-current charging power supply of the present invention.
Detailed Description
The technical solution, the structural features, the achieved objects and the effects of the embodiments of the present invention will be described in detail with reference to fig. 1 to 2 of the embodiments of the present invention, but the present invention is not limited thereto.
The invention provides a series resonance type constant current charging power supply, as shown in fig. 1, the series resonance type constant current charging power supply comprises: an EMI (electromagnetic Interference) filter module 1, connected to an urban power grid, for performing high-frequency filtering on three-phase alternating current in the urban power grid, and effectively suppressing Interference of harmful electromagnetic waves to a working circuit or other sensitive device units; the low-voltage rectifying and filtering module 2 is connected with the EMI filter module 1, comprises a rectifying submodule and a filtering capacitor submodule and is used for rectifying and filtering the three-phase alternating current after the high-frequency signals are filtered by the EMI filter module 1 and converting the three-phase alternating current into direct-current voltage; an Insulated Gate Bipolar Transistor (IGBT) full-bridge switch module 3 connected to the low-voltage rectification filter module 2, and configured to receive the dc voltage rectified and filtered by the low-voltage rectification filter module 2, and convert the dc voltage into a high-frequency ac voltage; the resonant capacitor inductor module 4 is in circuit connection with the IGBT full-bridge switch module 3 and is used for transmitting high-frequency alternating-current voltage; the high-voltage transformer module 5 is connected with the resonant capacitor inductor module 4 in series and used for realizing the lifting of high-frequency alternating-current voltage; the high-frequency rectification filter module 6 is in circuit connection with the high-voltage transformer module 5 and is used for processing the high-frequency alternating-current voltage lifted by the high-voltage transformer module 5, filtering high-frequency signals in the high-frequency alternating-current voltage signals, and outputting the actually required direct-current high voltage to be supplied to a large-capacity load energy storage capacitor; the high-voltage sampling module 7 is connected with the high-frequency rectifying and filtering module 6 and is used for collecting the direct-current high voltage output by the high-frequency rectifying and filtering module 6; the current sampling module 8 is connected with the resonant inductor-capacitor module 4 and is used for collecting the high-frequency current processed by the IGBT full-bridge switch 2 from the resonant inductor-capacitor module 4; the input end of the control circuit module 9 is respectively connected with the high-voltage sampling module 7 and the current sampling module 8 and is used for receiving the direct-current high voltage and the current collected by the high-voltage sampling module 7 and the current sampling module 8; the isolation driving circuit module 10 is arranged between the IGBT full-bridge switch module 3 and the control circuit module 9 through circuit connection to realize isolation between a main circuit (circuit modules except the control circuit module 9) and the control circuit module 9, and an input end of the isolation driving circuit module is connected with the control circuit module 9 for receiving a control signal, and an output end of the isolation driving circuit module is connected with the IGBT full-bridge switch module 3 for controlling the switching frequency of the IGBT full-bridge switch module 3.
It should be noted that, the main topology of the series resonant constant-current charging power supply is shown in fig. 2, and the dotted line frames (a), (b), (c), and (d) are respectively an IGBT full-bridge switch module 3, a resonant capacitor inductor module 4, a high-voltage transformer module 5, and a high-frequency rectification filter module 6; the IGBT full-bridge switch module 3 comprises IGBT devices Q1-Q4, diode devices D1-D4 and capacitance devices C1-C4, furthermore, an IGBT device Q1, a diode device D1 and a capacitance device C1 are connected in parallel to form a first switch circuit, and a second switch circuit, a third switch circuit and a fourth switch circuit are formed in the same way; the first switch circuit and the second switch circuit form a series circuit, and then are connected with a series circuit formed by the third switch circuit and the fourth switch circuit in a parallel circuit to be used as a series resonant constant-current charging power supply switch device control circuit to be conducted, and the IGBT devices Q1-Q4 comprise source electrodes, grid electrodes and drain electrodes; the resonant capacitance-inductance module 4 comprises a resonant capacitance-inductance circuit formed by serially connecting a resonant inductance L1 and a resonant capacitance C5, wherein the input end of the resonant capacitance-inductance circuit is connected between the first switch circuit and the second switch circuit and is used for completing the transmission of high-frequency signals; the high-voltage transformer module 5 comprises an iron core, a primary winding L2 and a plurality of secondary windings L3, and forms a multi-winding high-voltage transformer for boosting voltage, wherein one end of the primary winding L2 is connected with the output end of the resonant capacitor-inductor module 4, and the other end of the primary winding L2 is connected between the third switching circuit and the fourth switching circuit; the high-frequency rectifying and filtering module 6 is connected with the secondary winding L3 and is realized by an alternating current-direct current (AC-DC) converter.
In this embodiment, a 380V/50Hz three-phase mains current is converted into 525V direct current through an EMI filter module 1 (model FT310-50) and a low-voltage rectifier filter module 2, wherein the low-voltage rectifier filter module 2 performs rectification filter processing on the three-phase mains current by using rectifier modules MJYS-QKZL-100 and a 4700 μ F filter capacitor. In the charging process, the control circuit module 9 outputs a switch driving pulse signal, the driving pulse signal is transmitted to the isolation driving circuit module 10, and the isolation driving circuit module 10 provides a switching voltage (12V or 15V) to be respectively transmitted to the gates of the four IGBT full-bridge switches Q1 to Q4. Under the control of switching voltage, 525V direct current is converted into 525V/20kHz high-frequency alternating current after passing through an IGBT full-bridge switching module 3, the 525V/20kHz high-frequency alternating current is transmitted to a high-voltage transformer module 5 through a series resonance circuit formed by a resonance inductor L1 and a resonance capacitor C5, the 525V/20kHz high-frequency alternating current is lifted to 2100V/20kHz through a four-winding high-voltage transformer, high-frequency signals are filtered through a high-frequency rectifying and filtering module 6, and 2100V direct current high voltage is finally output in series.
Wherein, the current sampling module 8 and the high-voltage sampling module 7 form a feedback loop; the feedback loop, the resonant capacitor inductor module 4, the IGBT full-bridge switch module 3, the control circuit module 9 and the isolation drive circuit module 10 form a working circuit of a phase-shifted full-bridge zero-voltage current switch (ZVZCS-PWM), so that soft switching of an IGBT device is realized, and the turn-on and turn-off losses of the IGBT device are reduced.
Further, the high-voltage sampling module 7 and the current sampling module 8 respectively collect the high-frequency ac voltage signal output by the high-frequency rectification filter module 6 and the current signal output by the resonant capacitor inductor 4, and feed back the high-frequency ac voltage signal and the high-frequency current signal to the control board of the control circuit module 9, and the core device UC34066 of the control board judges and processes the fed back high-frequency ac voltage signal and high-frequency current signal, and generates driving pulse signals with different frequencies for controlling the IGBT full-bridge switch module 3 to the isolation driving circuit module 10 to control the switching frequency of the IGBT full-bridge switch module 3. When the difference between the sampling voltage fed back by the high-voltage sampling module 7 and the reference voltage set by the control circuit module 9 is large, the driving pulse signals generated by the control circuit module 9 are more, that is, the switching frequency of the IGBT full-bridge switching module 3 is high; when the difference between the reference voltage set by the control circuit module 9 and the sampling voltage fed back by the high-voltage sampling module 7 is zero, the control circuit module 9 sends out a closing signal to turn off the output driving pulse signal, so that the purpose of voltage stabilization is realized.
In summary, compared with the existing constant current charging power supply design, the series resonant constant current charging power supply provided by the invention has the advantages of high safety and reliability, small switching loss, high conversion efficiency and the like.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. A series resonance type constant current charging power supply is characterized by comprising:
the pretreatment assembly is connected with an urban power grid and used for converting three-phase alternating voltage in the urban power grid into direct current voltage;
the IGBT full-bridge switch module (3) is connected with the preprocessing component through a circuit and used for receiving the direct-current voltage output by the preprocessing component and converting the direct-current voltage into high-frequency alternating-current voltage;
the input end of the conversion component is connected with the IGBT full-bridge switch module (3) through a circuit and used for converting high-frequency alternating-current voltage and outputting direct-current high voltage;
the feedback assembly is connected with the conversion assembly through a circuit and used for acquiring the direct-current high-voltage signal and the current signal output by the conversion assembly;
and the input end of the control component is connected with the feedback component through a circuit, the output end of the control component is connected with the IGBT full-bridge switch module (3) through a circuit, the direct-current high-voltage signal collected by the feedback component is received, and the control signal is generated to control the on and off of the IGBT full-bridge switch module (3).
2. A series resonant constant current charging power supply according to claim 1, wherein the pre-processing component comprises: the EMI filter module (1) is connected with the urban power grid and is used for carrying out high-frequency filtering on three-phase alternating current in the urban power grid; and the low-voltage rectifying and filtering module (2) comprises a rectifying submodule and a filtering capacitor submodule, the input end of the low-voltage rectifying and filtering module is connected with the EMI filter module (1) through a circuit, the output end of the low-voltage rectifying and filtering module is connected with the IGBT full-bridge switch module (3) through a circuit, and the low-voltage rectifying and filtering module is used for converting three-phase alternating current into direct current.
3. The series resonant constant-current charging power supply according to claim 1, wherein the conversion element comprises: the resonant capacitor inductor module (4) is connected with the IGBT full-bridge switch module (3) in a circuit manner and is used for transmitting high-frequency alternating-current voltage; the high-voltage transformer module (5) is connected with the resonance capacitance and inductance module (4) in series and is used for realizing the lifting of high-frequency alternating-current voltage; and the high-frequency rectifying and filtering module (6) is used for processing the high-frequency alternating voltage lifted by the high-voltage transformer module (5), filtering high-frequency signals in the high-frequency alternating voltage signals and outputting the actually required direct current high voltage.
4. A series resonant constant current charging power supply according to claim 3, wherein the feedback component comprises: the high-voltage sampling module (7) is in circuit connection with the high-frequency rectifying and filtering module (6) and is used for collecting the direct-current high voltage output by the high-frequency rectifying and filtering module; and the current sampling module (8) is connected with the resonant inductance-capacitance module and is used for collecting current from the resonant capacitance-inductance module (4).
5. The series resonant constant-current charging power supply according to claim 4, wherein the control component comprises: the input end of the control circuit module (9) is respectively connected with the high-voltage sampling module (7) and the current sampling module (8) and is used for receiving the collected voltage and current and generating a driving pulse signal; and the isolation driving circuit module (10) is arranged between the IGBT full-bridge switch module (3) and the control circuit module (9) through circuit connection and is used for transmitting and controlling the switching voltage of the IGBT full-bridge switch module (3).
6. The series resonance type constant current charging power supply according to claim 1, wherein the IGBT full bridge switch module (3) includes a plurality of switch circuits connected by a circuit, each of the switch circuits is formed by an IGBT device, a diode device and a capacitor device connected in parallel, and the switch device control circuit as the series resonance type constant current charging power supply is turned on.
7. The series resonant constant-current charging power supply according to claim 5, wherein the input end of the isolation driving circuit module (10) is electrically connected to the control circuit module (9) for receiving the control driving pulse signal, and the output end thereof is connected to the gate of each IGBT device in the IGBT full-bridge switching module (3) for transmitting the switching voltage to further control the switching frequency of the IGBT device.
8. The series resonance type constant-current charging power supply according to claim 4, wherein the feedback component, the resonance capacitance and inductance module (4), the IGBT full-bridge switch module (3), the control circuit module (9) and the isolation driving circuit module (10) jointly form a working circuit of the phase-shifted full-bridge zero-voltage current type switch so as to reduce the turn-on and turn-off losses of the IGBT device.
9. The series resonance type constant-current charging power supply according to claims 1 to 8, wherein after the three-phase commercial alternating current is filtered by the EMI filter module (1) to obtain a high-frequency signal, the high-frequency signal is firstly converted into a direct-current voltage by the low-voltage rectification filter module (2), then the direct-current voltage is converted into a high-frequency alternating-current voltage by the IGBT full-bridge switch module (3), and then the high-frequency alternating-current voltage is efficiently transmitted to the high-voltage transformer module (5) by the resonance capacitor inductor module (4) to be boosted; and finally, the voltage output by the high-voltage transformer module (5) is processed by the high-frequency rectification filter module (6) and then is output in series to obtain the actually required direct-current high voltage.
10. The series resonance type constant-current charging power supply according to claim 1 to 8, wherein the high-voltage sampling module (7) performs high-voltage sampling from the high-frequency rectifying and filtering module (6), the current sampling module (8) performs current sampling from the resonant capacitor and inductor module (4), and transmits the obtained high-frequency alternating-current voltage and high-frequency current signal to the control circuit module (9), the control circuit module (9) performs judgment and processing according to the set reference voltage, generates driving pulse signals with different frequencies, and transmits the driving pulse signals to the isolation driving circuit module (10), and the isolation driving circuit module (10) transmits the switching voltage to the IGBT full-bridge switching module (3), thereby realizing control of the IGBT full-bridge switching module (3).
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| CN117394701A (en) * | 2023-11-28 | 2024-01-12 | 沈阳工业大学 | 5G base station power supply applied to 10kV high-voltage power supply |
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| CN101013860A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院电工研究所 | Charging equipment for high-voltage pulse capacitor |
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| CN101013850A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院电工研究所 | High-frequency constant-current charging power of high-voltage capacitor supplied with accumulator |
| CN101013860A (en) * | 2006-12-21 | 2007-08-08 | 中国科学院电工研究所 | Charging equipment for high-voltage pulse capacitor |
| CN205791736U (en) * | 2016-06-27 | 2016-12-07 | 贵州大学 | A kind of novel electric vehicle DC charging power supply |
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| CN117394701A (en) * | 2023-11-28 | 2024-01-12 | 沈阳工业大学 | 5G base station power supply applied to 10kV high-voltage power supply |
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