CN112532082B - High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply - Google Patents
High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply Download PDFInfo
- Publication number
- CN112532082B CN112532082B CN202011352522.XA CN202011352522A CN112532082B CN 112532082 B CN112532082 B CN 112532082B CN 202011352522 A CN202011352522 A CN 202011352522A CN 112532082 B CN112532082 B CN 112532082B
- Authority
- CN
- China
- Prior art keywords
- psm
- voltage
- circuit
- frequency
- power supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- 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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
-
- 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
-
- 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)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a high-frequency converter applied to a PSM high-voltage power supply and the PSM high-voltage power supply. The main circuit of the PSM high-voltage power supply consists of a modular high-frequency converter, a high-voltage high-frequency transformer and a PSM module group. The high-frequency converter consists of a three-phase EMI filter circuit, a controllable rectifying circuit, a soft switching inverter circuit and a control circuit; hundreds of kilowatts of average power architectures are realized through a plurality of high-frequency converters together, and the PSM high-voltage power supply is supplied with energy by a preceding stage. The high-frequency converter provided by the invention has the advantages of small volume, modularization, low cost, stable performance, simplicity and easiness in manufacturing, convenience in maintenance and the like. The plurality of high-voltage high-frequency transformers realize insulation isolation of different electric potentials. And the multiple PSM module groups realize high-voltage output through potential superposition.
Description
Technical Field
The invention belongs to the technical field of a PSM (pulse Step modulation) high-voltage power supply, and particularly relates to a high-frequency converter module applied to a Pulse Step Modulation (PSM) high-voltage power supply.
Background
The PSM technology can output parameters of near-hundred kilovolts of peak voltage, near-hundred amperes of peak current and hundreds of kilowatts of average power by utilizing pulse step modulation, and is widely applied to the field of plasma auxiliary heating due to rapid dynamic response and extremely high reliability. Taking the common electron cyclotron resonance as an example of an auxiliary heating means, the PSM technology has the advantages of high efficiency, high output voltage precision and rapid protection compared with the high-voltage thyristor voltage regulation technology and the high-voltage quadrant tube technology. The PSM high-voltage power supply has various capabilities of high-voltage insulation, high-power output, load steep drop, current impact resistance and the like.
Currently, most of PSM high-voltage power supplies applied to foreign NBI and ECRH adopt oil-immersed power frequency transformers, the primary side of the PSM high-voltage power supplies adopts a delta-shaped and Y-shaped connection method, and the secondary side of the PSM high-voltage power supplies is led out to form a plurality of windings to supply power for PSM of three-phase full-wave rectification topology; the NBI and ECRH applied in China mostly adopt double-Y winding oil immersed power frequency transformers and dry multi-winding transformers to supply power for PSM of three-phase full-wave rectification topology.
The low-voltage side converter topology in the prior art mainly adopts a three-phase power frequency full-wave rectification circuit with low working frequency, and the high-voltage transformer mainly adopts a three-phase multi-winding transformer with low working frequency. The three-phase power frequency full-wave rectification circuit has the defects of heavy weight, large volume, low control precision, large output ripple wave and the like. The low-frequency multi-winding transformer has the defects of large volume, high production difficulty, high maintenance cost and the like.
Disclosure of Invention
In order to solve the technical problems of the existing low-voltage side converter, the invention provides a high-frequency converter applied to a PSM high-voltage power supply. The converter is realized by adopting a high-frequency inversion technology, the PSM modules are supplied with energy through the plurality of converter modules, and the plurality of PSM modules realize high-voltage output through potential superposition. Compared with a power frequency converter, the low-voltage side high-frequency converter has the advantages of small size, high power factor, high control precision, small output ripple and the like.
The invention is realized by the following technical scheme:
a high-frequency converter applied to a PSM high-voltage power supply is applied to the PSM high-voltage power supply in a modularized manner, and comprises a three-phase EMI filter circuit, a controllable rectifying circuit, a soft switch inverter circuit and a control circuit;
the three-phase EMI filter circuit is used for carrying out denoising processing on three-phase alternating current and inputting the processed three-phase alternating current into the controllable rectifying circuit;
the controllable rectifying circuit converts the received three-phase alternating current into direct current and inputs the direct current into the soft switching inverter circuit;
the soft switch inverter circuit converts the received direct current into high-frequency bipolar output and supplies power to a PSM high-voltage power supply through a high-voltage high-frequency transformer;
the controllable rectifying circuit and the soft switching inverter circuit are controlled by the control circuit.
The invention adopts a three-phase EMI filter circuit to inhibit electromagnetic common mode noise and electromagnetic differential mode noise; the controllable rectifying circuit is adopted to reduce the harmonic content at the side of the power grid, improve the power factor, improve the power grid quality of the high-voltage power supply system by the three-phase EMI filter circuit and the controllable rectifying circuit together, and improve the working stability of the high-voltage control circuit. The high-frequency converter is realized by adopting a high-frequency inversion technology, and has the advantages of modularization, small volume, high power factor, high control precision, small output ripple and the like.
Preferably, the control circuit is realized based on a DSP and an ARM, and the control circuit controls a power switch of the controllable rectifying circuit to enable the working current of the three-phase power to follow the working voltage and output direct current power;
the control circuit controls a power switch of the soft switch inverter circuit, so that the power switch is switched on and off by zero current at zero voltage, and high-frequency power is output;
the control circuit is in communication connection with the upper computer.
Preferably, the controllable rectifier circuit of the invention is realized by a three-phase three-wire three-level VIENNA rectifier circuit or a three-phase six-switch PFC circuit.
Preferably, the soft-switching inverter circuit of the invention is realized by a three-level phase-shifted full-bridge inverter circuit, a staggered serial two-level full-bridge phase-shifted inverter circuit or a three-level full-bridge LLC inverter circuit.
The output power of the high-frequency converter is isolated by the high-voltage high-frequency transformer, the PSM modules are supplied with energy through the plurality of converter modules, and the plurality of PSM modules realize high-voltage output through potential superposition.
Therefore, the invention also provides a PSM high-voltage power supply, which comprises n high-frequency converters, n high-voltage high-frequency transformers and n PSM module groups, wherein the high-frequency converters are connected with the PSM module groups; the value of n is determined by dividing the value of n into a module group according to the output voltage of 5-6 kV (namely the value of n is determined by dividing the highest output voltage of the PSM high-voltage power supply by (5-6 kV), and n is a positive integer);
each PSM module group comprises a plurality of PSM modules, and the output ends of the PSM modules are connected in series step by step to realize potential superposition;
the output end of the ith high-frequency transformer is connected with the primary side of the ith high-voltage high-frequency transformer;
the secondary side of the ith high-voltage high-frequency transformer is connected with a plurality of PSM modules in the ith PSM module group in parallel;
。
preferably, the number of turns of the coils of the n high-voltage high-frequency transformers is completely consistent, and the insulation strength of the n high-voltage high-frequency transformers is divided into a plurality of grades and respectively corresponds to the n high-frequency transformers.
Preferably, the PSM module is composed of a dry-type high-frequency transformer and a rectification energy-storage chopper circuit, and a secondary side of the high-voltage high-frequency transformer is connected with a primary side of the dry-type high-frequency transformer inside the PSM module; the secondary side of the dry-type high-frequency transformer is connected with the rectification energy-storage chopper circuit;
the dry-type high-frequency transformer is used for realizing voltage insulation among a plurality of PSM modules in the PSM module group, so that the single-secondary winding of the high-voltage high-frequency transformer outputs;
the rectification energy storage chopper circuit rectifies the high-frequency bipolar power output by the dry type high-frequency transformer into direct-current power and outputs the power according to the time sequence requirement of the PSM high-voltage power supply.
Preferably, the insulation requirements of the n high-voltage high-frequency transformers are different, and the insulation voltage can be increased step by step according to the corresponding PSM module group, so that the most preferable cost, volume and reliability can be realized.
The invention has the following advantages and beneficial effects:
1. the high-frequency converter provided by the invention has the advantages of modularization, small volume, high power factor, low device cost, stable performance, simplicity and easiness in manufacturing, convenience in maintenance and the like. Through a plurality of completely consistent high-frequency converters, a modular architecture of hundreds of kilowatt average power is realized together, and the front-stage energy supply of the PSM high-voltage power supply is provided together;
2. the high-voltage high-frequency transformer provided by the invention has the characteristics of reduced magnetic core volume, reduced insulation strength of partial transformer, modularization, simple winding process, low maintenance cost and the like.
3. The PSM high-voltage power supply provided by the invention has the advantages of small volume, low cost, modularization, low maintenance cost and the like.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a block diagram of the operating principle of the high frequency converter of the present invention.
Fig. 2 is a schematic block diagram of the PSM high voltage power supply of the present invention.
Reference numbers and corresponding part names in the drawings:
the power supply comprises a 1-three-phase EMI filter circuit, a 2-controllable rectifying circuit, a 3-soft switching inverter circuit, a 4-high-voltage high-frequency transformer, a 5-PSM module, a 6-PSM internal dry-type high-frequency transformer, a 7-PSM internal rectifying energy-storage chopper circuit, and an 8-DSP and ARM control circuit.
Detailed Description
Hereinafter, the term "comprising" or "may include" used in various embodiments of the present invention indicates the presence of the invented function, operation or element, and does not limit the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to the possibility of, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
Compared with the prior power supply of the PSM high-voltage power supply, the prior power supply of the PSM high-voltage power supply mainly adopts a low-frequency three-phase power frequency full-wave rectifying circuit and a topological structure formed by a low-frequency three-phase multi-winding transformer, and the prior power supply has the problems of heavy weight, large volume, low control precision, large output ripple and the like.
The three-phase EMI filter circuit 1 is used for denoising three-phase alternating current and inputting the processed three-phase alternating current into the controllable rectification circuit 2; the controllable rectification circuit 2 converts the received three-phase alternating current into direct current, and the direct current is input into the soft switch inverter circuit 3; the soft switch inverter circuit 3 converts the received direct current into high-frequency bipolar output, and supplies power to the low-voltage side of the PSM high-voltage power supply through a high-voltage high-frequency transformer 4; the controllable rectification circuit 2 and the soft switch inverter circuit 3 are controlled by a control circuit 8.
The three-phase EMI filter circuit 1 of the present embodiment is composed of a safety capacitor, a differential mode inductor, a common mode inductor, and a resistor, and mainly functions to suppress electromagnetic common mode noise and electromagnetic differential mode noise. The controllable rectifying circuit 2 utilizes a diode and a power switch to form a rectifying topology to convert three-phase alternating current into direct current. Compared with three-phase uncontrollable rectification, the controllable rectification circuit reduces the harmonic content on the network side and improves the power factor. The three-phase EMI filter circuit 1 and the controllable rectification circuit 2 jointly improve the power grid quality of a high-voltage power supply system, and the working stability of the high-voltage control circuit is improved. The soft switching inverter circuit 3 utilizes a diode and a power switch to form an inverter topology with small switching loss and high working frequency, converts direct current power into high-frequency bipolar output, and has the advantages of high working frequency, small size, high control precision, small output ripple and less switching loss. The DSP and ARM control circuit 8 controls a power switch in the controllable rectifying circuit, so that the working current of the three-phase power tracks the working voltage and outputs direct-current power. The DSP and ARM control circuit 8 controls the power switch of the soft switch inverter circuit 3, so that the power switch is switched on at zero voltage and switched off at zero current, and high-frequency power is output. Meanwhile, the DSP and the ARM control circuit 8 complete transactional management such as upper computer communication, pulse synchronization and the like.
The controllable rectifier circuit 2 of the present embodiment is implemented by a three-phase three-wire three-level VIENNA rectifier circuit or a three-phase six-switch PFC circuit.
The soft-switching inverter circuit 3 of the present embodiment is implemented by a three-level phase-shifted full-bridge inverter circuit, an interleaved serial two-level full-bridge phase-shifted inverter circuit, or a three-level full-bridge LLC inverter circuit.
The high-frequency converter of the present embodiment, the high-frequency voltage converter 4 and the PSM module 5 realize power output of the high-voltage power supply together.
The soft switching inverter circuit 3 is connected to a primary side of a high-voltage high-frequency transformer 4, and a secondary side of the high-voltage high-frequency transformer 4 is connected to a primary side of a dry-type high-frequency transformer 6 in the PSM module 5.
The PSM module 5 consists of a dry-type high-frequency transformer 6 inside the PSM and a rectifying, energy-storing and chopper circuit 7 inside the PSM.
The dry-type high-frequency transformer 6 can enable the high-voltage high-frequency transformer 4 to output single-secondary-side windings, so that the insulation difficulty of secondary-side output lines is reduced, and the manufacturing difficulty of the high-voltage high-frequency transformer 4 is reduced. A rectification energy storage chopper circuit 7 in the PSM rectifies high-frequency bipolar power into unipolar power, the unipolar power is converted into direct-current power through LC filtering, the direct-current power passes through a chopper circuit consisting of a switching device and a diode, and when an instruction of the output power of the control circuit is received, the switching device is conducted, so that the output requirement of the PSM high-voltage power supply is met.
The high-frequency converter of the embodiment has the advantages of low device cost, stable performance, simplicity in manufacture, convenience in maintenance and the like.
Example 2
Based on a plurality of high-frequency converters provided in embodiment 1, a modular architecture with an average power of several hundred kilowatts is realized together, and a prime stage power supply of the PSM high-voltage power supply is provided together.
Specifically, as shown in fig. 2, the present embodiment provides a PSM high-voltage power supply, which includes n high-frequency converters, n high-voltage high-frequency transformers 4, and n PSM module sets, which are provided in embodiment 1; the value of n is determined by dividing the highest output voltage of the PSM high-voltage power supply by (5-6 kV) according to the output voltage, wherein the value of n is determined by dividing the highest output voltage of the PSM high-voltage power supply by (5-6 kV), and n is a positive integer; .
Each PSM module group comprises a plurality of PSM modules 5, and the output ends of the PSM modules 5 are connected in series step by step to realize potential superposition;
the output end of the ith high-frequency transformer is connected with the primary side of the ith high-voltage high-frequency transformer 4;
the secondary side of the ith high-voltage high-frequency transformer 4 is connected with a plurality of PSM modules 5 in the ith PSM module group in parallel;
。
as shown in fig. 2, in the present embodiment, 8 PSM modules 5 are grouped into one group according to the output voltage of the PSM high-voltage power supply, that is, each PSM module group includes 8 PSM modules 5.
The dry-type high-frequency transformer 6 realizes voltage insulation among 8 PSM modules 5 corresponding to the low-voltage side high-frequency transformer, so that the single-secondary winding of the high-voltage high-frequency transformer 4 can be output, the winding difficulty of a secondary output line is reduced, and the manufacturing difficulty of the high-voltage high-frequency transformer 4 is reduced. A rectification energy storage chopper circuit 7 in the PSM rectifies high-frequency bipolar power into unipolar power, the unipolar power is converted into direct-current power through LC filtering, the direct-current power passes through a chopper circuit consisting of a switching device and a diode, and when an instruction of the output power of the control circuit is received, the switching device is conducted, so that the output requirement of the PSM high-voltage power supply is met.
The number of turns of the coils of the n high-voltage high-frequency transformers is completely consistent, and the insulation strength can be divided into a plurality of grades and respectively corresponds to the n low-voltage side converter modules. Specifically, when the positive potential of the PSM module 1 is grounded, the insulation strength of the primary side and the secondary side of the 1 st high-voltage high-frequency transformer is equal to the insulation strength of the dry-type high-frequency transformer 6 inside the PSM, the insulation strength of the primary side and the secondary side of the 2 nd high-voltage high-frequency transformer is equal to 2 times of the insulation strength of the dry-type high-frequency transformer 6 inside the PSM, and so on, the insulation strengths of the n high-voltage high-frequency transformers are increased step by step. And only the nth high-voltage high-frequency transformer has the highest insulation strength, so that the manufacturing difficulty of the high-voltage high-frequency transformer is reduced.
The coil design of the high-voltage high-frequency transformer 4 is related to the effective sectional area of a magnetic core, the working frequency and the working volt-seconds, and the PSM high-voltage power supply adopts a high-frequency converter topology to reduce the volume and the weight of the transformer.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A PSM high-voltage power supply is characterized by comprising n high-frequency converters, n high-voltage high-frequency transformers (4) and n PSM module groups; the value of n is determined by dividing the value of n into a module group according to the output voltage and the voltage of 5-6 kV;
each PSM module group comprises a plurality of PSM modules (5), and the output ends of the PSM modules (5) are connected in series step by step to realize potential superposition;
the output end of the ith high-frequency transformer is connected with the primary side of the ith high-voltage high-frequency transformer (4);
the secondary side of the ith high-voltage high-frequency transformer (4) is connected with a plurality of PSM modules in the ith PSM module group in parallel;
；
the high-frequency converter consists of a three-phase EMI filter circuit (1), a controllable rectifying circuit (2), a soft switch inverter circuit (3) and a control circuit (8);
the three-phase EMI filter circuit (1) is used for denoising three-phase alternating current and inputting the processed three-phase alternating current into the controllable rectifying circuit (2);
the controllable rectifying circuit (2) converts the received three-phase alternating current into direct current and inputs the direct current into the soft switching inverter circuit (3);
the soft switch inverter circuit (3) converts the received direct current into high-frequency bipolar output and supplies power to the PSM high-voltage power supply through a high-voltage high-frequency transformer;
the controllable rectifying circuit (2) and the soft switching inverter circuit (3) are controlled by the control circuit (8).
2. The PSM high voltage power supply of claim 1, wherein n high voltage high frequency transformers have a completely uniform number of turns of the coil, and the insulation strength is divided into several levels, corresponding to n high frequency transformers.
3. A PSM high voltage power supply according to claim 1, characterized in that the PSM module (5) consists of a dry high frequency transformer (6) and a rectifying, energy-storing chopper circuit (7), the secondary side of the high voltage high frequency transformer (4) is connected to the primary side of the dry high frequency transformer (6) inside the PSM module (5); the secondary side of the dry-type high-frequency transformer (6) is connected with the rectification energy-storage chopper circuit (7);
the dry-type high-frequency transformer (6) is used for realizing voltage insulation among a plurality of PSM modules (5) in the PSM module group, so that the single-secondary winding of the high-voltage high-frequency transformer (4) is output;
the rectification energy storage chopper circuit (7) rectifies the high-frequency bipolar power output by the dry-type high-frequency transformer (6) into direct-current power and outputs the power according to the time sequence requirement of the PSM high-voltage power supply.
4. A PSM high voltage supply according to claim 1, characterized in that the insulation strength of n high voltage high frequency transformers (4) is increased step by step in order.
5. The PSM high-voltage power supply according to claim 1, characterized in that the control circuit (8) is realized based on DSP and ARM, the control circuit (8) controls the power switch of the controllable rectifying circuit (2) to make the three-phase working current follow the working voltage and output the direct current power;
the control circuit (8) controls a power switch of the soft switch inverter circuit (3) to enable the power switch to be switched on and off at zero voltage and at zero current, and high-frequency power is output;
and the control circuit (8) is in communication connection with an upper computer.
6. A PSM high voltage supply according to claim 1, characterized in that the controllable rectifier circuit (2) is implemented as a three-phase three-wire three-level VIENNA rectifier circuit or a three-phase six-switch PFC circuit.
7. The PSM high-voltage power supply according to claim 1, characterized in that the soft-switching inverter circuit (3) is realized by a three-level phase-shifted full-bridge inverter circuit, an interleaved series two-level full-bridge phase-shifted inverter circuit or a three-level full-bridge LLC inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011352522.XA CN112532082B (en) | 2020-11-26 | 2020-11-26 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011352522.XA CN112532082B (en) | 2020-11-26 | 2020-11-26 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112532082A CN112532082A (en) | 2021-03-19 |
| CN112532082B true CN112532082B (en) | 2021-11-16 |
Family
ID=74994374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011352522.XA Active CN112532082B (en) | 2020-11-26 | 2020-11-26 | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112532082B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295936A (en) * | 2007-04-27 | 2008-10-29 | 北京合康亿盛科技有限公司 | Exterior feeding control power supply of high voltage frequency convertor power unit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710520A (en) * | 1996-06-28 | 1998-01-20 | Harris Corporation | Pulse step modulator and transformer |
| CN2424578Y (en) * | 2000-01-19 | 2001-03-21 | 国家广播电影电视总局无线电台管理局 | Pulse step modulator |
| CN105141170A (en) * | 2015-09-18 | 2015-12-09 | 江苏同芯电气科技有限公司 | Long pulse large power high voltage power supply |
| CN106300989B (en) * | 2016-09-05 | 2018-11-13 | 南华大学 | A kind of gamut can be changed the variable high direct voltage high frequency switch power in modulated waveform forward position and its control method |
| CN106533222B (en) * | 2016-12-16 | 2020-12-22 | 中国科学院合肥物质科学研究院 | PSM high-voltage power supply system and feedback control implementation method thereof |
| EA202090065A1 (en) * | 2017-06-16 | 2020-04-17 | Таэ Текнолоджиз, Инк. | MULTILEVEL HYSTERESIS VOLTAGE CONTROLLERS FOR VOLTAGE MODULATORS AND METHODS FOR THEIR CONTROL |
| CN107241025A (en) * | 2017-07-17 | 2017-10-10 | 华中科技大学 | A kind of high voltage power supply |
| CN109327147A (en) * | 2018-11-27 | 2019-02-12 | 保定市卓思恒畅电器有限公司 | A kind of power regulation device of High Frequency Solid State induction heating power |
| CN110460241A (en) * | 2019-09-03 | 2019-11-15 | 湖南大学 | A kind of modularization tandem type DC converter of High voltage output |
-
2020
- 2020-11-26 CN CN202011352522.XA patent/CN112532082B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101295936A (en) * | 2007-04-27 | 2008-10-29 | 北京合康亿盛科技有限公司 | Exterior feeding control power supply of high voltage frequency convertor power unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112532082A (en) | 2021-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10283261B2 (en) | Power conversion device | |
| US10269484B2 (en) | Magnetic component and power conversion device using the same | |
| CN106936320B (en) | Interleaved parallel magnetic integrated bidirectional full-bridge LLC resonant converter | |
| US20150180350A1 (en) | Resonant bidirectional converter, uninterruptible power supply apparatus, and control method | |
| Hu et al. | New modular structure DC–DC converter without electrolytic capacitors for renewable energy applications | |
| Meng et al. | An input-series flyback auxiliary power supply scheme based on transformer-integration for high-input voltage applications | |
| KR101464478B1 (en) | Multi input llc resonant type dc-dc converter | |
| CN108092518B (en) | Three-stage AC/DC hybrid three-port power electronic transformer | |
| Ning et al. | Hybrid resonant ZVZCS PWM full-bridge converter for large photovoltaic parks connecting to MVDC grids | |
| Liu et al. | Optimal design of GaN and PCB-winding Based Transformer-Inductor-Integrated Magnetics for CLL resonant converter | |
| Safaee et al. | A resonant bidirectional dc-dc converter for aerospace applications | |
| Cha et al. | Design and development of high-power DC–DC converter for metro vehicle system | |
| US11587719B2 (en) | Magnetic integrated hybrid distribution transformer | |
| CN112532082B (en) | High-frequency converter applied to PSM high-voltage power supply and PSM high-voltage power supply | |
| Kanakri et al. | Dual-transformer inductor-less llc resonant converter topology | |
| CN105991044B (en) | Non-contact power supply secondary side rectifying circuit and method | |
| Lin et al. | Analysis and implementation of a new three-level converter | |
| Coccia et al. | Very high performance AC/DC/DC converter architecture for traction power supplies | |
| Lin et al. | Half-bridge zero voltage switching converter with three resonant tanks | |
| Jo et al. | Reconfigurable LLC Resonant Converter for Bidirectional Electric-Vehicle Chargers | |
| Samanta et al. | Medium voltage supply directly to data-center-servers using SiC-based single-stage converter with 20kW experimental results | |
| Shao et al. | High-Frequency Integrated Magnetics Design for Onboard LLC Converter Utilizing 4-Layer PCB | |
| CN114825882B (en) | Modularized photovoltaic inverter and method based on three-phase integrated magnetic coupling ripple transfer | |
| Tian et al. | An Interleaved AC-DC Converter with Common-Mode and Differential-Mode Coupled Inductors for Better EMI Performance | |
| CN209805682U (en) | ISOP-based high-voltage direct current converter |
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 | ||
| CP03 | Change of name, title or address |
Address after: 610000 No. 715, north section of Hupan Road, Tianfu new area, Chengdu, Sichuan Patentee after: SOUTHWESTERN INSTITUTE OF PHYSICS Patentee after: Zhonghe Tongchuang (Chengdu) Technology Co.,Ltd. Address before: No.5, Huangjing Road, xihanggang street, Shuangliu District, Chengdu, Sichuan 610000 Patentee before: SOUTHWESTERN INSTITUTE OF PHYSICS Patentee before: CHENGDU TONGCHUANG MATERIAL SURFACE TECHNOLOGY CO.,LTD. |
|
| CP03 | Change of name, title or address |