CN103248260A - High-power high-frequency high-voltage power supply - Google Patents

High-power high-frequency high-voltage power supply Download PDF

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Publication number
CN103248260A
CN103248260A CN2013101866859A CN201310186685A CN103248260A CN 103248260 A CN103248260 A CN 103248260A CN 2013101866859 A CN2013101866859 A CN 2013101866859A CN 201310186685 A CN201310186685 A CN 201310186685A CN 103248260 A CN103248260 A CN 103248260A
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CN
China
Prior art keywords
voltage
frequency
phase
power
power supply
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Application number
CN2013101866859A
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Chinese (zh)
Inventor
陈�峰
孙国平
杨炜
曾庆军
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镇江天力变压器有限公司
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Application filed by 镇江天力变压器有限公司 filed Critical 镇江天力变压器有限公司
Priority to CN2013101866859A priority Critical patent/CN103248260A/en
Publication of CN103248260A publication Critical patent/CN103248260A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies 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

Abstract

The invention discloses a high-power high-frequency high-voltage power supply. A fuse wire is connected with a three-phase full-bridge rectifying circuit through a phase current sensor and a three-phase filter in sequence; the three-phase full-bridge rectifying circuit is connected with an inverter circuit through cables; one ends of a resonance capacitance and a resonance current sensor are connected with the inverter circuit; the other ends of the resonance capacitance and the resonance current sensor are connected with a primary side of a high-frequency transformer; two secondary sides of the high-frequency transformer are connected with a secondary current voltage transducer through a high-voltage silicon rectifier module; and the phase current sensor, the inverter circuit, the resonance current sensor and the secondary current voltage transducer are all connected with a control unit. According to the high-power high-frequency high-voltage power supply, the circuit structure is concise and reliable, the output voltage waveform is stable, the output power is adjustable, and the mounting is integrated.

Description

The high-power high-frequency high-voltage power supply
Technical field
The present invention relates to a kind of high-power high-frequency high-voltage supply unit.
Background technology
Along with the appearance of high frequency high voltage transformer, novel high-frequency and high-voltage power supply replaces traditional power frequency supply becomes a kind of trend.Though dependable performance also comes into operation, also there is following problem in existing high-power high-frequency high-voltage power supply:
1, existing high-power high-frequency high-voltage power supply produces a large amount of harmonic pollutions, and power-efficient is low, and power factor (PF) is little, and the output voltage pulsation is big, and power supplying efficiency is low.
2, existing high-power high-frequency high-voltage power control system complexity, integrated installation difficulty.
3, existing high-power high-frequency high-voltage power supply adopts and exchanges phase-shift voltage regulating, makes that the output HT waveform is more single, and the dedusting time spent, the adaptability of operating modes such as high resistivity dust was poor to high concentrate dust.
Summary of the invention
In order to overcome the existing the problems referred to above of existing high-power high-frequency high-voltage power supply, the purpose of this invention is to provide a kind of high-power high-frequency high-voltage power supply, this power supply has high-power high-frequency high-voltage output; Adopt the IGBT inversion circuit of LCC resonant circuit; Adopt advanced DSP digital control technology, circuit structure is succinctly reliable, and output voltage waveforms is stable, and power output is adjustable, installs integrated.
The objective of the invention is to be achieved through the following technical solutions:
A kind of high-power high-frequency high-voltage power supply is characterized in that: this power supply comprises fusible link, phase current transducer, Three-phase electric-wave filter, three-phase bridge rectification circuit, inverter circuit, resonant capacitance, resonance current transducer, high frequency transformer, high voltage silicon stack rectification module, secondary current voltage sensor and control unit; Fusible link is connected with three-phase bridge rectification circuit by phase current transducer, Three-phase electric-wave filter successively, and three-phase bridge rectification circuit is connected by cable with inverter circuit; One end of resonant capacitance and resonance current sensor is connected with inverter circuit, and the other end is connected with the former limit of high frequency transformer; Two secondary of high frequency transformer link to each other with the secondary current voltage sensor by the high voltage silicon stack rectification module; Phase current transducer, inverter circuit, resonance current transducer and secondary current voltage sensor all are connected with control unit.
Among the present invention, one group of in parallel and high frequency transformation formation LCC resonant circuit of resonant capacitance C1-C5.High frequency transformer is made up of division formula winding transformer.The high voltage silicon stack rectification module is made up of one group of diode D7-D14.Control unit adopts dsp chip acquisition process power supply internal data, links to each other with phase current transducer, inverter circuit and resonance current sensor and secondary current voltage sensor by 485 communications.
Among the present invention, fusible link links to each other with the three-phase mains.The three-phase mains links to each other with Three-phase electric-wave filter through fusible link, and circuit links to each other with three-phase bridge rectifier circuit, full bridge inverter, filter capacitor, high frequency transformer, high voltage silicon stack rectification after Three-phase electric-wave filter comes out successively.Hall element is connected between fusible link and the Three-phase electric-wave filter, between transformer and the inverter circuit and after the high voltage silicon stack rectification.
Among the present invention, three-phase 380V civil power obtains the 530V direct current behind the three phase full bridge current rectifying and wave filtering circuit, by obtaining the high frequency voltage of 20KHZ behind the IGBT inverter circuit, again by high frequency transformer boost and the high voltage silicon stack rectification obtains the pulsating direct current negative pressure of high-frequency and high-voltage at last.
Control unit adopts the DSP digital control technology among the present invention, produce the pwm pulse of 0-3V by the DSP unit, can drive the disconnected voltage signal of IGBT switch through buffer circuit and the final generation of amplifying circuit, by to the adjusting of PWM wave width and the adjusting of IGBT switching frequency, realization is to the control of final output ripple high direct voltage, it is adjustable that output power of power supply is realized, reaches the purpose of making rational use of resources.
The inverter bridge that direct voltage is formed through IGBT among the present invention, resonant capacitance and high frequency transformer are formed high-frequency resonant formula inverter circuit.The major loop series resonance constitutes accurate constant-current source.If switching frequency and series resonance frequency are respectively fs and fr, when satisfying fs ≦ 1/2fr, resonant circuit works in discontinuous conduction mode.Major loop adopts series resonance, makes IGBT be operated in zero current turning-on and zero-current switching pattern on the one hand, can significantly reduce the switching loss of IGBT, reduces the temperature rise of IGBT; On the other hand, reduce the high order harmonic component that enters high frequency transformer, reduce the loss of transformer and silicon stack.
The present invention obtains high-frequency ac with three-phase mains inversion behind filter rectification, after boosting, transformer obtains the high-frequency and high-voltage negative dc voltage by the silicon stack rectification again, the power supply internal data is controlled by DSP after optical coupling isolation circuit and analog circuitry processes, thereby it is controlled that the power-supply system output voltage is realized.
Compared with prior art, harmonic pollution of the present invention, power-efficient height, power supplying efficiency height; Control system adopts advanced DSP digital control technology, and circuit structure is succinctly reliable, and output voltage waveforms is stable, and power output is adjustable, installs integrated.
Description of drawings
Fig. 1 is systematic schematic diagram of the present invention.
Embodiment
Introduce the present invention by reference to the accompanying drawings in detail.
A kind of high-power high-frequency high-voltage power supply, as shown in Figure 1: comprise fusible link 1, phase current transducer 2, Three-phase electric-wave filter 3, three-phase bridge rectification circuit 4, inverter circuit 5, resonant capacitance 6, resonance current transducer 7, high frequency transformer 8, high voltage silicon stack rectification 9, deduster body 10, control unit 11.Three-phase 380V civil power links to each other with phase current transducer 2 through fusible link 1, then link to each other with high frequency transformer 8 former limits with resonance current sensor 7 by three-phase bridge rectification circuit 4, inverter circuit 5, resonant capacitance 6 successively, high frequency transformer 8 secondary are connected with high voltage silicon stack rectification 9, high voltage silicon stack rectification 9 links to each other with secondary current voltage sensor 10, produce the high voltagehigh frequency negative voltage at last, wherein phase current transducer 2, inverter circuit 5, resonance current transducer 7 and secondary current voltage sensor 10 link to each other with control unit 11 by stube cable.
The rectification circuit that three phase full bridge rectification 4 loops are made of 6 rectifier diode D1-D6 and filter capacitor C form.The anode of D1-D3 links to each other with the negative electrode of D4-D6, wherein D1 and D4, and D2 and D5, D3 and D6 are connected in parallel for three groups, and capacitor C is connected on the negative electrode of D3 and the anode of D6.Inverter circuit 5 is by 4 IGBT(S1-S4) form, wherein S1 connects with S3, and S2 connects with S4, and resonant capacitance 6 is connected in parallel between S1 and the S3 by 5 electric capacity (C1-C5), and resonance current transducer 7 is connected between S2 and the S4.Resonant capacitance C2 and resonance current transducer 7 are respectively as the former limit that is connected high frequency transformer 8 on one side, the secondary 1 of high frequency transformer 8 is connected on respectively in the middle of D7, the D9 and D8, D10 in the high voltage silicon stack rectification 9, secondary 2 is connected on respectively in the middle of D11, the D13 and D12, D14 in the high voltage silicon stack rectification 9, and the anode of D8 links to each other with secondary current voltage sensor 10.
Three-phase 380V civil power obtains the 530V direct voltage by rectification behind Three-phase electric-wave filter, again through obtaining the 20KHZ high-frequency alternating current behind the inverter circuit, boosted by high frequency transformer at last and the high voltage silicon stack rectification after output high-frequency high-voltage direct-current voltage.It is the digital control technology of core that control circuit adopts DSP, produce the pwm pulse signal that a pair of amplitude equates by DSP, and corresponding Dead Time is set in order to avoid the conducting up and down of the same brachium pontis of IGBT, discharge and recharge by control power supplys such as regulating impulse width, pulse frequency, spike train pulse number and dwell times, and then reach the purpose of regulation voltage.Pwm signal becomes the grid voltage of 0-15V and then can drive opening and turn-offing of IGBT through light-coupled isolation behind the amplifying circuit.Inversion obtains DC bus-bar voltage after by the high voltage silicon stack rectifying and wave-filtering and has the output voltage height, and output ripple is little, and input harmonics is little, and power factor is big, to advantages such as the harmonic pollution of electrical network are few.
Circuit structure of the present invention is succinct, and output voltage waveforms is stable, and input harmonics is few, and power output is adjustable, controls convenient and reliable.

Claims (5)

1. high-power high-frequency high-voltage power supply, it is characterized in that: this power supply comprises fusible link (1), phase current transducer (2), Three-phase electric-wave filter (3), three-phase bridge rectification circuit (4), inverter circuit (5), resonant capacitance (6), resonance current transducer (7), high frequency transformer (8), high voltage silicon stack rectification module (9), secondary current voltage sensor (10) and control unit (11); Fusible link (1) is connected with three-phase bridge rectification circuit (4) by phase current transducer (2), Three-phase electric-wave filter (3) successively, and three-phase bridge rectification circuit (4) is connected by cable with inverter circuit (5); One end of resonant capacitance (6) and resonance current sensor (7) is connected with inverter circuit (5), and the other end is connected with the former limit of high frequency transformer (8); Two secondary of high frequency transformer (8) link to each other with secondary current voltage sensor (10) by high voltage silicon stack rectification module (9); Phase current transducer (2), inverter circuit (3) and resonance current sensor (7) and secondary current voltage sensor (10) all are connected with control unit (11).
2. high-power high-frequency high-voltage power supply according to claim 1 is characterized in that: the in parallel and high frequency transformation formation LCC resonant circuit of one group of resonant capacitance (C1-C5).
3. high-power high-frequency high-voltage power supply according to claim 1 is characterized in that: high frequency transformer (8) is made up of division formula winding transformer.
4. high-power high-frequency high-voltage power supply according to claim 1, it is characterized in that: high voltage silicon stack rectification module (9) is made up of one group of diode (D7-D14).
5. high-power high-frequency high-voltage power supply according to claim 1, it is characterized in that: control unit (11) adopts dsp chip acquisition process power supply internal data, links to each other with resonance current sensor (7) and secondary current voltage sensor (10) with inverter circuit (3) with phase current transducer (2) by 485 communications.
CN2013101866859A 2013-05-20 2013-05-20 High-power high-frequency high-voltage power supply CN103248260A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105048858A (en) * 2015-08-19 2015-11-11 南京威登等离子科技设备有限公司 High-voltage plasma power supply

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101767061A (en) * 2009-12-21 2010-07-07 浙江师范大学 Novel high-frequency and high-voltage power supply for electrostatic precipitation
CN101954313A (en) * 2010-09-08 2011-01-26 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
CN201821270U (en) * 2010-09-29 2011-05-04 夏改 High-frequency high-voltage power supply for electric dust removal
CN201880600U (en) * 2010-11-25 2011-06-29 杭州天明电子有限公司 High-frequency and high-voltage power supply for electric precipitator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101767061A (en) * 2009-12-21 2010-07-07 浙江师范大学 Novel high-frequency and high-voltage power supply for electrostatic precipitation
CN101954313A (en) * 2010-09-08 2011-01-26 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
CN201821270U (en) * 2010-09-29 2011-05-04 夏改 High-frequency high-voltage power supply for electric dust removal
CN201880600U (en) * 2010-11-25 2011-06-29 杭州天明电子有限公司 High-frequency and high-voltage power supply for electric precipitator

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官威: "静电除尘器谐振软开关高频高压电源的设计与实现", 《中国优秀硕士学位论文全文数据库》 *
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105048858A (en) * 2015-08-19 2015-11-11 南京威登等离子科技设备有限公司 High-voltage plasma power supply

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