CN113452277A - Power module for pulse power generation device and pulse power generation device - Google Patents
Power module for pulse power generation device and pulse power generation device Download PDFInfo
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- CN113452277A CN113452277A CN202010888378.5A CN202010888378A CN113452277A CN 113452277 A CN113452277 A CN 113452277A CN 202010888378 A CN202010888378 A CN 202010888378A CN 113452277 A CN113452277 A CN 113452277A
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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
- H02M11/00—Power conversion systems not covered by the preceding groups
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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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
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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
- 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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Abstract
The invention relates to the technical field of power electronics, in particular to a power module for a pulse power generation device and the pulse power generation device. Wherein the power module includes: the alternating current input end is used for accessing alternating current; the direct current input end is used for accessing direct current; the boost unit is provided with a rectifying unit, an energy storage unit and an H-bridge circuit; the rectifying unit is connected with the alternating current input end, one end of the energy storage unit is connected with the rectifying unit, the other end of the energy storage unit is connected with the direct current input end, and the H-bridge circuit is connected with the output end of the energy storage unit; the output end is connected with the H-bridge circuit and used for outputting alternating current or high-voltage pulse; and the power supply unit is used for providing at least one path of power supply with the voltage magnitude for the power module. The power module provided by the invention has the advantages of high modularization degree, good reliability, strong universality, convenience in assembly and low production cost.
Description
Technical Field
The invention relates to the technical field of power electronics, in particular to a power module for a pulse power generation device and the pulse power generation device.
Background
The pulse power generator releases the stored electric energy in the form of high-frequency power pulse to generate high-frequency pulse electric field. Chinese patent CN107809184A discloses a pulse voltage generating device, as shown in fig. 1, including a transformer a, a first AC/DC converting circuit B, an energy storage capacitor C, a discharge control circuit D, a second AC/DC converting circuit E, and a DC/AC converting circuit F. The low-frequency power grid voltage is converted into direct-current voltage through the second AC/DC conversion circuit E, then the direct-current voltage is converted into higher-frequency square-wave voltage through the DC/AC conversion circuit F, the higher-frequency square-wave voltage is transmitted to the first AC/DC conversion circuit B through the transformer A and is converted into direct-current voltage, the energy storage capacitor C is enabled to be charged quickly, and finally high-voltage pulse is output through the discharge control circuit D.
The inventor finds that, in the actual process of manufacturing the pulse power generator, because the transformer needs a sufficient amount of coils, the volume of the transformer is large, and the transformer is often a single module, that is, for the pulse power generator, the functions implemented by the units on both sides of the transformer are different, and the internal circuit connections are also different, the pulse voltage generator disclosed in the above technical solution generally needs to respectively perform module design and assembly on the units included on both sides of the transformer and then connect to the transformer, that is, the second AC/DC conversion circuit E and the DC/AC conversion circuit F need to be designed and packaged into a module, and then the first AC/DC conversion circuit B, the energy storage capacitor C, and the discharge control circuit D need to be designed and packaged into a module together, so two different production lines must be configured to respectively perform the manufacturing of the components on both sides of the transformer, the input manpower, material resources and capital are high, and the failure rate and the maintenance cost of the product are increased. The same problem exists with the bipolar pulse power supply for insulation detection disclosed in chinese patent application CN106787928A for the above mentioned drawbacks.
Generally speaking, in the application process of the technical scheme, more than two functional modules need to be designed, so that the assembly and production and manufacturing processes are complex, the modularization degree is low, and the cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a power module for a pulse power generation device and the pulse power generation device, wherein the problems of low modularization degree and high cost of the pulse voltage generation device in the prior art are solved.
According to a first aspect, an embodiment of the present invention provides a power module for a pulse power generation apparatus, including: the alternating current input end is used for accessing alternating current; the direct current input end is used for accessing direct current; the boost unit is provided with a rectifying unit, an energy storage unit and an H-bridge circuit; the rectifying unit is connected with the alternating current input end, one end of the energy storage unit is connected with the rectifying unit, the other end of the energy storage unit is connected with the direct current input end, and the H-bridge circuit is connected with the output end of the energy storage unit; the output end is connected with the H-bridge circuit and used for outputting alternating current or high-voltage pulse; and the power supply unit is used for providing at least one path of power supply with the voltage magnitude for the power module.
The power module for the pulse power generation device provided by the embodiment of the invention has the following beneficial effects: (1) the power supply can be connected with alternating current or direct current, and has high compatibility to the power supply. When alternating current is connected, the alternating current passes through the rectifying unit, the energy storage unit and the H-bridge circuit in sequence, and when direct current is connected, the alternating current or high-voltage pulse with adjustable frequency, pulse width, polarity and pulse number is output at the output end of the power module through the energy storage unit and the H-bridge circuit in sequence; (2) each power module can share one set of control program, so that the development and maintenance difficulty is greatly simplified; (3) the rectifier unit is connected in series with a fuse for protection, so that the influence of single fault among modules is avoided, the robustness of the system is improved, and the reliability degree is high; meanwhile, the rectifying unit adopts a voltage-multiplying rectifying topology, so that the voltage of the energy storage unit can be improved, and the number of cascaded power modules can be reduced under the condition of outputting pulse voltage equally; (4) in the application process, the power module can be used as an enabling module of a primary side of a transformer of the pulse power generation device and also can be used as a generation module of alternating current or high-voltage pulse of a secondary side of the transformer of the pulse power generation device, and the universality is strong; during production and manufacturing, only one group of production lines is needed to be configured, so that manpower, material resources and capital are greatly saved; (5) during assembly, the assembly of the enabling side can be completed only by connecting the alternating current input end of the power module to a mains supply grid or connecting the direct current input end to a direct current power supply and then connecting the output end to the primary coil of the transformer; at secondary side coil one side of transformer, only need with at least one the ac input end of power module inserts secondary side coil, the output is established ties in proper order, alright realize exchanging or high-voltage pulse output, and the assembly process only needs to be connected the ac input end or two terminals of direct current input end, output of transformer homonymy, and the combination or the split of being convenient for, the modularization degree is high.
Optionally, the power module further comprises: a drive unit connected to the H-bridge circuit; the output end of the power supply unit is connected with the driving unit; the control unit is connected with the driving unit and used for providing a control signal for the driving unit; wherein, the output end of the power supply unit is connected with the control unit.
Optionally, the power module further comprises: a communication interface; and one end of the communication unit is connected with the communication interface of the power module, and the other end of the communication unit is connected with the control unit.
In the power module for the pulse power generation device provided by the embodiment of the invention, the control unit controls the driving unit to enable the H-bridge circuit to output corresponding alternating current or high-voltage pulse; the communication interface can realize information interaction between the power module and an external controller and other power modules in the pulse power generation device, and ensure the working reliability of the power module and the pulse power generation device.
Optionally, the communication interface is an optical fiber communication interface, and the communication unit is an optical fiber transceiver.
The power module for the pulse power generation device provided by the embodiment of the invention adopts optical fiber communication, the information transmission speed is high, the protection is timely, and the electrical isolation degree among the power modules is high.
Optionally, the power supply unit is a flyback power supply, is connected to the energy storage unit, and is configured to obtain power from the energy storage unit to provide power of multiple voltages to other units in the power module.
According to the power module for the pulse power generation device, the flyback power supply is used for obtaining power from the energy storage unit to provide power supplies with multiple paths of voltages for other units in the power module, and extra power supplies are not needed to be provided for supplying power to all units in the power module, so that the single power module can work independently, the integration level in the power module is high, and the insulation design difficulty of the pulse power generation device is low.
Optionally, the power module further comprises: and the discharging unit is respectively connected with the energy storage unit and the control unit and is used for discharging the energy storage unit under the control of the control unit.
According to the power module for the pulse power generation device provided by the embodiment of the invention, the rapid discharge of the power module can be realized through the discharge unit, the voltage balance among the power modules can also be realized, and the consistency of the power modules and the precision of the pulse output by the pulse power generation device are ensured.
According to a second aspect, an embodiment of the present invention provides a pulse power generation apparatus, including: at least one transformer; each transformer comprises at least one primary coil and at least one secondary coil; the power module according to the first aspect or any embodiment of the first aspect is connected to the at least one primary winding and/or the at least one secondary winding.
Optionally, the transformer includes a plurality of secondary windings, and each secondary winding is connected with the power module; wherein all of the power modules are cascaded.
Optionally, the primary windings of all the transformers correspond to one power module.
Optionally, the primary coils of all the transformers correspond to the power modules one to one.
According to the pulse power generation device provided by the embodiment of the invention, the power module and the transformer in the first aspect or any embodiment of the first aspect are used for cascading, and the power module has the advantage of high modularization degree, so that the pulse power generation device is clear in structure and convenient to expand and maintain.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a prior art pulse power generator;
FIG. 2 is a schematic structural diagram of a power module for a pulse power generator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a complete structure of a power module for a pulse power generation device according to an embodiment of the present invention;
FIG. 4 is a functional block diagram of a power module for a pulsed power generation device provided by an embodiment of the present invention;
FIG. 5 is a block diagram of the control scheme of the power module for the pulse power generator according to the present invention;
FIG. 6 is a schematic structural diagram of a pulse power generator according to an embodiment of the present invention;
FIG. 7 is a schematic structural topology diagram of a pulse power generator according to an embodiment of the present invention;
FIG. 8 is a schematic structural topology diagram of a pulse power generator according to an embodiment of the present invention;
fig. 9 is a schematic structural topology diagram of a pulse power generation device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
According to a first aspect, an embodiment of the present invention provides a power module for a pulse power generation apparatus, as shown in fig. 2, including: an alternating current input end 10 for accessing alternating current; a direct current input terminal 20 for accessing direct current; a booster unit 30 having a rectifying unit 31, an energy storage unit 32, and an H-bridge circuit 33; the rectifying unit 31 is connected with the alternating current input end 10, one end of the energy storage unit 32 is connected with the rectifying unit 31, the other end of the energy storage unit 32 is connected with the direct current input end 20, and the H-bridge circuit 33 is connected with the output end of the energy storage unit 32; an output terminal 40 connected to the H-bridge circuit 33 for outputting ac power or high voltage pulses; and the power supply unit 50 is used for providing at least one path of power supply with the voltage magnitude to the power module.
The power module has three power terminals, namely an ac input 10, a dc input 20 and an output 40, as shown in fig. 2. The ac input terminal 10 may be connected to a commercial power grid or a secondary winding of a transformer, and the dc input terminal 20 may be connected to a dc power converted by the commercial power grid. When the power module is used as an enabling module on the primary side of the transformer, according to the type of the power supply provided, for example, the commercial power grid or the direct current converted by the commercial power grid, a corresponding power connection terminal, for example, the alternating current input terminal 10 or the direct current input terminal 20 is selected, and then the output terminal 40 is connected to the primary coil of the transformer. The boosting unit 30 may be a frequency converter, an operational amplifier circuit, or the like, which can convert ac power or dc power, and here, the boosting unit 30 has a rectifying unit 31, an energy storage unit 32, and an H-bridge circuit 33, which are connected in sequence. The rectifying unit 31 is connected with the alternating current input end 10 and used for converting a commercial power grid into direct current after rectification, the rectifying unit 31 adopts a series fuse scheme to reduce the single fault influence of the power modules, adopts a voltage-doubling rectifying topological structure to improve the voltage of the energy storage unit, and can reduce the number of the cascaded power modules under the condition of the same output pulse voltage. The energy storage unit 32 is charged rapidly by the direct current, and is changed into alternating current or high-voltage pulse through the H-bridge circuit 33 to the output end 40 of the power module, so as to provide energy for the secondary side of the transformer.
When the power module is used as a module for generating alternating current or high-voltage pulse on the secondary side of the transformer, the alternating current input end 10 of the power module is connected to the secondary coil of the transformer and generates alternating current or high-voltage pulse output after sequentially passing through the rectifying unit 31, the energy storage unit 32 and the H-bridge circuit 33. Further, in order to output ac or high voltage pulse with larger amplitude and larger power, a plurality of power modules are usually cascaded on the secondary side of the transformer, and at this time, the ac input ends 10 of the plurality of power modules are connected in parallel to the secondary coil of the transformer, and the output ends 40 are sequentially connected in series.
Since each unit in the power module, for example, the H-bridge circuit 33, needs to provide a corresponding auxiliary power supply, the power supply unit 50 is configured to provide a corresponding driving power supply for the H-bridge circuit 33 and other units. Here, the power supply unit 50 may take power from an external power supply, or may be a multifunctional power supply, and generates voltage signals having multiple voltage levels.
The power module for the pulse power generation device provided by the embodiment of the invention has the following beneficial effects: (1) the power supply can be connected with alternating current or direct current, and has high compatibility to the power supply. When alternating current is connected, the alternating current passes through the rectifying unit, the energy storage unit and the H-bridge circuit in sequence, and when direct current is connected, the alternating current or high-voltage pulse with adjustable frequency, pulse width, polarity and pulse number is output at the output end of the power module through the energy storage unit and the H-bridge circuit in sequence; (2) each power module can share one set of control program, so that the development and maintenance difficulty is greatly simplified; (3) the rectifier unit is connected in series with a fuse for protection, so that the influence of single fault among modules is avoided, the robustness of the system is improved, and the reliability degree is high; meanwhile, the rectifying unit adopts a voltage-multiplying rectifying topology, so that the voltage of the energy storage unit can be improved, and the number of cascaded power modules can be reduced under the condition of outputting pulse voltage equally; (4) in the application process, the power module can be used as an enabling module of a primary side of a transformer of the pulse power generation device and also can be used as a generation module of alternating current or high-voltage pulse of a secondary side of the transformer of the pulse power generation device, and the universality is strong; during production and manufacturing, only one group of production lines is needed to be configured, so that manpower, material resources and capital are greatly saved; (5) during assembly, the assembly of the enabling side can be completed only by connecting the alternating current input end of the power module to a mains supply grid or connecting the direct current input end to a direct current power supply and then connecting the output end to the primary coil of the transformer; at secondary side coil one side of transformer, only need with at least one the ac input end of power module inserts secondary side coil, the output is established ties in proper order, alright realize exchanging or high-voltage pulse output, and the assembly process only needs to be connected the ac input end or two terminals of direct current input end, output of transformer homonymy, and the combination or the split of being convenient for, the modularization degree is high.
Optionally, as shown in fig. 3, the power module further includes: a drive unit 60 connected to the H-bridge circuit 33; wherein the output terminal of the power supply unit 50 is connected to the driving unit 60; a control unit 70 connected to the driving unit 60 for providing a control signal to the driving unit 60; wherein the output terminal of the power supply unit 50 is connected to the control unit 70.
Here, the control unit 70 is an FPGA control chip, and the H-bridge circuit 33 includes four power semiconductor switches (e.g., IGBT, MOSFET, SiC-IGBT, SiC-MOSFET, etc.). The control unit 70 is configured to control the four power semiconductor switches to be turned on or off through the driving unit 60, so that the H-bridge circuit 33 can output alternating current or electric pulses. The driving unit 60 is configured to amplify the control signal sent by the control unit 70 and respond to the amplified control signal to further control the on/off of the power semiconductor switch.
Optionally, as shown in fig. 3, the power module further includes: a communication interface 80; and a communication unit 90 having one end connected to the communication interface 80 of the power module and the other end connected to the control unit 70.
Here, the communication unit 90 is configured to perform information interaction with an external controller, such as an upper computer, and/or other power modules, and the communication unit 90 may adopt a wired communication manner or a wireless communication manner. When the power module is used, the communication interface 80 is connected with the communication interfaces of the external controller and/or other power modules.
Here, referring to fig. 3 again, the power module may further include a collecting unit 100 connected to the output end of the energy storage unit 32 and the control unit 70, and configured to collect the output voltage and the output current of the energy storage unit 32, perform overvoltage and overcurrent judgment by the control unit 70, and send the overvoltage and overcurrent faults to an external controller or other power modules through the communication unit 90, so as to timely block and drive the power module with faults, thereby avoiding damage, and simultaneously adjust driving parameters of other power modules in real time, so as to ensure that the amplitude and frequency of the finally generated ac power or high voltage pulse meet the requirements of users.
In the power module for the pulse power generation device provided by the embodiment of the invention, the control unit controls the driving unit to enable the H-bridge circuit to output corresponding alternating current or high-voltage pulse; the communication interface can realize information interaction between the power module and an external controller and other power modules in the pulse power generation device, and ensure the working reliability of the power module and the pulse power generation device.
Optionally, the communication interface 80 is an optical fiber communication interface, and the communication unit 90 is an optical fiber transceiver.
The power module for the pulse power generation device provided by the embodiment of the invention adopts optical fiber communication, the information transmission speed is high, the protection is timely, and the electrical isolation degree among the power modules is high.
Optionally, the power supply unit 50 is a flyback power supply, and is connected to the energy storage unit 32 (not shown in the figure), and is configured to obtain power from the energy storage unit 32 to provide power of multiple voltages to other units in the power module.
Here, the flyback power supply has a voltage converter that converts the power taken from the energy storage unit 32 into a voltage signal of a plurality of voltages to supply the power of the plurality of voltages to other units in the power module. The power supply unit 50 is used for providing corresponding auxiliary power supplies for the H-bridge circuit 33, the discharge unit 200, the acquisition unit 100, the driving unit 60, the control unit 70 and the communication unit 90 in the power module.
According to the power module for the pulse power generation device, the flyback power supply is used for obtaining power from the energy storage unit to provide power supplies with multiple paths of voltages for other units in the power module, and extra power supplies are not needed to be provided for supplying power to all units in the power module, so that the single power module can work independently, the integration level in the power module is high, and the insulation design difficulty of the pulse power generation device is low.
Optionally, as shown in fig. 3, the power module further includes: the discharging unit 200 is respectively connected to the energy storage unit 32 and the control unit 70, and is configured to discharge the energy storage unit 32 under the control of the control unit 70.
Specifically, the collecting unit 100 collects the output voltage or the output current of the energy storage unit 32, and when the control unit 70 determines that the output voltage and the output current exceed the preset voltage and the preset current, it is determined that the electric energy stored in the energy storage unit 32 is excessive, so as to control the discharging unit 200 to discharge, and balance the electric energy stored in the energy storage unit 32. In a specific embodiment, the discharge unit 200 is a switching device and a resistor.
According to the power module for the pulse power generation device provided by the embodiment of the invention, the rapid discharge of the power module can be realized through the discharge unit, the voltage balance among the power modules can also be realized, and the consistency of the power modules and the precision of output pulses of the pulse power generation device are ensured.
Fig. 4 is a schematic block diagram of a power module provided in the present invention, and as shown in fig. 4, the rectifying unit 31 includes diodes D1 and D2, and converts ac power into dc power; the energy storage unit 32 stores the direct current by adopting a mode that capacitors C1, C2, C3 and C4 are connected in series and then charged in parallel;
alternating current passes through the rectifying unit 31 and passes through diodes D1 and D2 to rectify the alternating current into direct current; the energy storage unit 32 stores the direct current by adopting a mode that capacitors C1, C2, C3 and C4 are connected in series and then charged in parallel; the H-bridge circuit 33 includes four metal-oxide semiconductor field effect transistors MOSFETs, Q1, Q2, Q3, Q4, respectively, which convert direct current into alternating current or high voltage pulses; the discharging unit 200 is arranged at the output end of the energy storage unit 32, and controls the switch S1 to be turned on through a PWM modulation mode, so that the loop of the resistor R1 is turned on to release electric energy, and the electric energy stored in the energy storage unit 32 is balanced; the power supply unit 50 includes a mosfet Q5, a transformer T1, and a rectifier module, and converts the dc power received from the output terminal of the energy storage unit 32 into voltage signals of various voltage magnitudes, such as 5V, 15V, and 22V.
According to the power module provided by the invention, the rectifying unit converts alternating current into direct current, the energy storage unit is charged by using the capacitor to store electric energy, the H-bridge circuit is inverted to generate high-voltage pulse alternating current, the discharging unit is connected to the output end of the energy storage unit and the control unit, the discharging unit can balance the electric energy of the energy storage unit through PWM modulation, the power supply unit obtains electricity from the energy storage unit and generates voltage signals with various voltage sizes to provide required driving voltage for each unit in the power module, an auxiliary power supply is not required to be additionally provided for the power module, so that the single power module can work independently, the integration level is high, and the insulation difficulty is small.
Specifically, fig. 5 is a control schematic block diagram of the power module provided by the present invention, as shown in fig. 5, all the power modules may share one set of control program, the power module receives the instruction of the control unit in an optical fiber communication mode, decodes the instruction to obtain a specific control signal, PWM modulates the output signal of the PWM to the driving unit through the dead zone after the PWM modulation, meanwhile, the output voltage and the output current of the energy storage unit are collected by using an ADC sampling mode, when the output voltage or the output current exceeds a preset protection threshold value, overvoltage and overcurrent protection is carried out on the power module, and simultaneously blocking the PWM modulation and the drive output of the dead zone unit, so that the drive unit is rapidly blocked, and finally transmitting the fault information of the overvoltage and overcurrent protection to the control unit through optical fiber communication after coding, thereby realizing the closed-loop control of the power module.
The power module provided by the invention is used for transmitting information based on an optical fiber communication mode, controlling PWM modulation or dead zones by using ADC sampling and overvoltage and overcurrent protection modes, enabling a driving unit to be quickly blocked, and finally transmitting the overvoltage and overcurrent protection information to a control unit by using optical fiber communication, so that closed-loop control is realized, and the safety and stability of the power module in working are ensured.
According to a second aspect, the present invention provides a pulsed power generation device, as shown in fig. 6, comprising: at least one transformer; each transformer comprises at least one primary coil 301 and at least one secondary coil 302; the power module 400 according to the first aspect or any embodiment of the first aspect is connected to the at least one primary winding 301 and/or the at least one secondary winding 302.
Specifically, in fig. 6, the pulse power generation apparatus includes one transformer, the transformer has one primary winding 301 and one secondary winding 302 as an example, the primary winding 301 of the transformer is connected to one power module 400, and the secondary winding 302 is correspondingly connected to one power module 400.
Further, the power module 400 at the primary side may be connected to both the alternating current AC of the utility power grid and the direct current DC converted by the utility power grid, and the specific contents of the units included in the power module 400 are described in detail with reference to fig. 2 to 5, which are not described herein again.
The pulse power generation device provided by the embodiment of the invention has the following beneficial effects: (1) only one power supply, namely Alternating Current (AC) or Direct Current (DC), is needed to be provided, so that alternating current or high-voltage pulse can be generated; (2) each power module can share one set of control program, so that the development and maintenance difficulty is greatly simplified; (3) the rectifier unit is connected in series with a fuse for protection, so that the influence of single fault among modules is avoided, the robustness of the system is improved, and the reliability degree is high; meanwhile, the rectifying unit adopts a voltage-multiplying rectifying topology, so that the voltage of the energy storage unit can be improved, and the number of cascaded power modules can be reduced under the condition of outputting pulse voltage equally; (4) in the application process, the power module can be used as an enabling module of a primary side of a transformer of the pulse power generation device and also can be used as a generation module of alternating current or high-voltage pulse of a secondary side of the transformer of the pulse power generation device, and the universality is strong; during production and manufacturing, only one group of production lines is needed to be configured, so that manpower, material resources and capital are greatly saved; (5) during assembly, the assembly of the enabling side can be completed only by connecting the alternating current input end of the power module to a mains supply grid or connecting the direct current input end to a direct current power supply and then connecting the output end to the primary coil of the transformer; at secondary side coil one side of transformer, only need with at least one the ac input end of power module inserts secondary side coil, the output is established ties in proper order, alright realize exchanging or high-voltage pulse output, and the assembly process only needs to be connected the ac input end or two terminals of direct current input end, output of transformer homonymy, and the combination or the split of being convenient for, the modularization degree is high.
Optionally, as shown in fig. 7, the transformer includes a plurality of secondary windings 302, and each secondary winding 302 is connected with the power module 400; wherein all of the power modules 400 are cascaded.
Fig. 7 illustrates an example in which the pulse power generation device includes a transformer including a primary winding 301 and a plurality of secondary windings 302. The primary winding 301 of the transformer is connected with the power module 400 to enable the power module to transmit to the secondary winding 302. On the secondary winding 302 side (i.e., the secondary side) of the transformer, the communication interfaces of the plurality of power modules 400 may be connected in a closed loop, specifically, a communication transmission terminal of the communication interface of the first power module 400 is connected to a communication reception terminal of the second power module 400, a communication transmission terminal of the second power module 400 is connected to a communication reception terminal of the third power module 400, and a communication transmission terminal of the last power module 400 is connected to a communication reception terminal of the first power module 400. The output ends of the power modules 400 are connected in series in sequence, so that alternating current or high-voltage pulses generated by the power modules 400 are superposed.
Alternatively, as shown in fig. 8, the primary windings 301 of all the transformers correspond to one power module 400.
In fig. 8, the pulse power generating apparatus includes two transformers, each of the transformers has a primary winding 301, the primary winding 301 of the second transformer is connected to the primary winding 301 of the first transformer, and the primary winding 301 of the first transformer is connected to one of the power modules 400.
Alternatively, as shown in fig. 9, the primary windings 301 of all the transformers correspond to the power modules 400 one to one.
Fig. 9 illustrates an example in which the pulse power generation device includes two transformers, each of which has a primary winding 301. As shown in fig. 9, one power module 400 is connected to the primary winding 301 of each transformer.
According to the pulse power generation device provided by the invention, each power module can work independently, and only one power supply is needed to be provided, namely alternating current AC of a mains supply power grid or direct current DC after the mains supply power grid is converted; the modularized high-voltage switch cabinet has the advantages of high modularization degree, high reliability, simple design, convenience in assembly, clear structure, convenience in expansion and convenience in maintenance.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the present application.
Claims (10)
1. A power module for a pulsed power generation device, comprising:
the alternating current input end is used for accessing alternating current;
the direct current input end is used for accessing direct current;
the boost unit is provided with a rectifying unit, an energy storage unit and an H-bridge circuit; the rectifying unit is connected with the alternating current input end, one end of the energy storage unit is connected with the rectifying unit, the other end of the energy storage unit is connected with the direct current input end, and the H-bridge circuit is connected with the output end of the energy storage unit;
the output end is connected with the H-bridge circuit and used for outputting alternating current or high-voltage pulse;
and the power supply unit is used for providing at least one path of power supply with the voltage magnitude for the power module.
2. The power module of claim 1, further comprising:
a drive unit connected to the H-bridge circuit; the output end of the power supply unit is connected with the driving unit;
the control unit is connected with the driving unit and used for providing a control signal for the driving unit; wherein, the output end of the power supply unit is connected with the control unit.
3. The power module of claim 2, further comprising:
a communication interface;
and one end of the communication unit is connected with the communication interface of the power module, and the other end of the communication unit is connected with the control unit.
4. The power module of claim 3, wherein the communication interface is a fiber optic communication interface and the communication unit is a fiber optic transceiver.
5. The power module of claim 1, wherein the power supply unit is a flyback power supply, and is connected to the energy storage unit, and configured to obtain power from the energy storage unit to provide power of multiple voltages to other units in the power module.
6. The power module of claim 2, further comprising:
and the discharging unit is respectively connected with the energy storage unit and the control unit and is used for discharging the energy storage unit under the control of the control unit.
7. A pulsed power generation device, comprising:
at least one transformer; each transformer comprises at least one primary coil and at least one secondary coil;
the power module of any of claims 1-6 connected to the at least one primary winding and/or the at least one secondary winding.
8. The pulse power generation device according to claim 7, wherein the transformer includes a plurality of the secondary windings, the power module being connected to each of the secondary windings; wherein all of the power modules are cascaded.
9. The pulse power generation device according to claim 8, wherein the primary windings of all the transformers correspond to one of the power modules.
10. The pulse power generation device according to claim 9, wherein the primary windings of all the transformers correspond to the power modules one to one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010888378.5A CN113452277A (en) | 2020-08-28 | 2020-08-28 | Power module for pulse power generation device and pulse power generation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010888378.5A CN113452277A (en) | 2020-08-28 | 2020-08-28 | Power module for pulse power generation device and pulse power generation device |
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| CN113452277A true CN113452277A (en) | 2021-09-28 |
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| CN202010888378.5A Pending CN113452277A (en) | 2020-08-28 | 2020-08-28 | Power module for pulse power generation device and pulse power generation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114035647A (en) * | 2021-11-23 | 2022-02-11 | 哈尔滨工业大学 | Pulse power device for generating disturbance magnetic field |
| CN114204818A (en) * | 2021-11-03 | 2022-03-18 | 华为数字能源技术有限公司 | Power conversion system, power conversion module and processing device |
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