CN204030975U - Single-phase and automatic three-phase switching high voltage source - Google Patents
Single-phase and automatic three-phase switching high voltage source Download PDFInfo
- Publication number
- CN204030975U CN204030975U CN201420290413.3U CN201420290413U CN204030975U CN 204030975 U CN204030975 U CN 204030975U CN 201420290413 U CN201420290413 U CN 201420290413U CN 204030975 U CN204030975 U CN 204030975U
- Authority
- CN
- China
- Prior art keywords
- phase
- circuit
- automatic
- input
- emc filter
- 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.)
- Expired - Lifetime
Links
- 239000003990 capacitor Substances 0.000 claims description 31
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 101100100146 Candida albicans NTC1 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Rectifiers (AREA)
Abstract
The utility model relates to a kind of single-phase and automatic three-phase switching high voltage source.The technical problems to be solved in the utility model is to provide a kind of single-phase and automatic three-phase switching high voltage source, can automatically switch single phase poaer supply input and three phase mains input, improves the adaptability of power supply.The technical scheme addressing this problem: single-phase and automatic three-phase switching high voltage source, comprise successively rectified three-phase circuit, EMC filter circuit, valley fill type pfc circuit, Single-Chip Switching Mode Power Circuit and several output branch roads, it is characterized in that: between described rectified three-phase circuit and EMC filter circuit, be provided with relay circuit and the single-phase auxiliary power circuit for automatically switch single phase poaer supply input and three phase mains, inputted.The utility model is mainly applicable to switch power technology field.
Description
Technical field
The utility model relates to switch power technology field, is specifically related to the single-phase automatic switchover with three phase supply of a kind of ammeter industry, replaces in current industry with the ammeter power supply of two groups of independent current source patterns power supplies, and control is automatically mainly used in powering.
Background technology
Electric energy meter upgrades to electronic electric energy meter by mechanical type now, and original Industrial Frequency Transformer power supply now can be replaced by Switching Power Supply gradually, and Switching Power Supply is mainly divided into by topological structure: (1) linear power supply; (2) Unisolated switch power supply (BUCK, Flybuck); (3) resistance-capacitance depressurization power supply; (4) isolating switch power.Power supply main topology in ammeter is reverse exciting switching voltage regulator, requirement power supply has: Chinese People's Anti-Japanese Military and Political College's electric current and high voltage surge, electromagnetic radiation is little, ripple voltage is little, cost is low, stability and safety is reliable, in intelligent electric energy meter, be widely used, but there is the difficult standard up to standard of EMC (Electro Magnetic Compatibility), complex structure, cost is high, reliability fail safe is not high, the shortcomings such as Anti-surging ability is low simultaneously, power consumption is bigger than normal, and efficiency is low.At present ammeter industry single-phase with three phase supply be independently, device used is more and can not automatically switch, humorous wave interference and electromagnetic interference are larger, MEC test be not easy by.
Utility model content
Technical problem to be solved in the utility model is the deficiency that overcomes above-mentioned background technology, a kind of single-phase and automatic three-phase switching high voltage source is provided, this high voltage source can automatically be switched single phase poaer supply input and three phase mains input, the adaptability of raising power supply and reliability, fail safe, reduce costs, and have circuit structure simple, disturb the feature little, cost is low.
The technical solution adopted in the utility model is:
Single-phase and automatic three-phase switching high voltage source, comprise successively rectified three-phase circuit, EMC filter circuit, valley fill type pfc circuit, Single-Chip Switching Mode Power Circuit and several output branch roads, it is characterized in that: between described rectified three-phase circuit and EMC filter circuit, be provided with relay circuit and the single-phase auxiliary power circuit for automatically switch single phase poaer supply input and three phase mains, inputted;
Described relay circuit is provided with four Z-type contact sets; The normally closed fixed contact of No. one, No. two Z-type contact sets connects respectively two output lines of rectified three-phase circuit, and moving contact connects respectively two input lines of EMC filter circuit, often opens the moving contact that fixed contact connects respectively No. three, No. four Z-type contact sets; No. three, No. four Z-type contact sets often open two phase lines that fixed contact connects respectively single phase poaer supply;
Described single-phase auxiliary power circuit comprises power regulator U3 and peripheral circuit thereof, and the input of power regulator is connected with single phase poaer supply, the coil power supply of output to four Z-type contact sets.
Each root phase line of the input of described rectified three-phase circuit all connects common port by current inrush limiter part and the voltage limit device of series connection, between current inrush limiter part and voltage limit device, is wherein the input point that exchanges of this phase line.
Described EMC filter circuit comprises capacitor C 1, C2 and common mode inductance L1, described capacitor C 1, C2 are connected in parallel on respectively on two coils of common mode inductance L1, capacitor C 1 two ends are two input lines of EMC filter circuit, and capacitor C 2 two ends are two output lines of EMC filter circuit.
Described valley fill type pfc circuit comprises diode D17～D19, electrochemical capacitor C3, C4; Diode D17 differential concatenation, after the negative pole of electrochemical capacitor C3, is connected in parallel between two output lines of EMC filter circuit together; Diode D19 differential concatenation, after the positive pole of electrochemical capacitor C4, is connected in parallel between two output lines of EMC filter circuit together, and diode D18 is connected between the negative pole of electrochemical capacitor C3 and the positive pole of electrochemical capacitor C4.
Described Single-Chip Switching Mode Power Circuit comprises power supply IC chip U1 and peripheral circuit, switching tube Q1 and transformer TR1; Described power supply IC chip U1 is connected with an input line on the former limit of transformer TR1 by switching tube Q1, and power supply IC chip U1 is also connected with another input line on former limit by high-pressure limit circuit.
Described high-pressure limit circuit comprises resistance R 1～R4 and rectifier diode DZ1, the DZ2 of mutual series connection.
The beneficial effects of the utility model are: it is that (two-phase input ceiling voltage is 520V AC to 2KV AC standard-required that the utility model reaches single-phase and three phase isolated isolation voltage, three-phase input ceiling voltage is 650VAC), simplify circuit, reduce costs, improve reliability;
Specifically: (1) super wide input voltage range (45V AC～520V AC), mainly that built-in metal-oxide-semiconductor 700V by the withstand voltage 900V of switching tube Q1 string power source IC chip U1 is withstand voltage and realize, input rectifying, partly with 2 rectifier diode DZ1, DZ2 series connection, guarantees withstand voltage enough simultaneously; (2) the public one group of Single-Chip Switching Mode Power Circuit of single phase power supply and three phase supply, circuit structure is simple, and cost is low; Back-up source is assisted in single-phase conduct, can be by relay circuit and automatic three-phase switching; (3) the withstand voltage 1.9 times of input voltages of superelevation, its principle is with (1); (4) the utility model is provided with valley fill type PFC, can be so that the harmonic wave interference reduction of whole power supply; (5) defencive function is perfect; (6) by the isolation of common mode inductance L1 and transformer, make electromagnetic interference little.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is the circuit theory diagrams of single-phase auxiliary power circuit in Fig. 1.
Fig. 3 is the circuit theory diagrams of Fig. 1 repeat circuit circuit.
Fig. 4 is the circuit theory diagrams of rectified three-phase circuit in Fig. 1, EMC filter circuit, valley fill type pfc circuit.
Fig. 5 is the circuit theory diagrams of Single-Chip Switching Mode Power Circuit and several output branch roads in Fig. 1.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 1, single-phase and automatic three-phase switching high voltage source described in the utility model, comprises rectified three-phase circuit, EMC filter circuit, valley fill type pfc circuit, Single-Chip Switching Mode Power Circuit and several output branch roads successively.Between described rectified three-phase circuit and EMC filter circuit, be provided with relay circuit and the single-phase auxiliary power circuit for automatically switch single phase poaer supply input and three phase mains, inputted.
As shown in Figure 3, described relay circuit is provided with four Z-type contact sets; The normally closed fixed contact of No. one, No. two Z-type contact sets connects respectively two output lines of rectified three-phase circuit, and moving contact connects respectively two input lines of EMC filter circuit, often opens the moving contact that fixed contact connects respectively No. three, No. four Z-type contact sets; No. three, No. four Z-type contact sets often open two phase lines that fixed contact connects respectively single phase poaer supply, normally closed fixed contact is unsettled.Single-phasely isolate withstand voltage >>2KVAC with three alternate insulation, (this is the test event that GB requires to 60S, under powering-off state, by the positive and negative terminal of ac voltage withstanding instrument, be added in the single-phase (L2 of power supply, N2) with three-phase (LA, LB, LC) 2KVAC between end, continue 60 seconds, without any punch-through, be qualified), if reach the relay of 2KV*1.414VD without ac voltage withstanding between break contact, (recommend adoption HFD3-V/12V) used in the relay series connection of two withstand voltage 1.5KV of recommend adoption, as shown in Figure 3, relay J 1 has above-mentioned No. one, No. two Z-type contact sets, relay J 2 has above-mentioned No. three, No. four Z-type contact sets, often open two moving contacts (5 pin and 6 pin) that fixed contact (7 pin and 8 pin) is connected relay J 2 for two of relay J 1, make relay reach IEC62052, IEC62053 requirement.
As shown in Figure 2, described single-phase auxiliary power circuit comprises power regulator U3 (the VIPER12A chip of recommend adoption low cost and high reliability) and peripheral circuit thereof, the input of power regulator is connected with single phase poaer supply by current rectifying and wave filtering circuit, output is to the coil power supply of four Z-type contact sets (12V direct current), therefore, when single phase poaer supply is connected, power regulator U3 output services voltage, two relay energized actions are carried out single-phase and three-phase switching.Peripheral circuit comprises capacitor C 20～C23, diode D26～D28, and inductance L 4, wherein diode D28 is continuous unrestrained diode, inductance L 4 is energy storage inductor.Described current rectifying and wave filtering circuit comprises the filter circuit (custom circuit structure, does not describe in detail) that rectification circuit that four diode D01 form and capacitor C 17, C18 and resistance R 17, R18 form.
As shown in Figure 4, three phase lines that described rectified three-phase circuit comprises that diode D1～D16 forms and the bridge rectifier (custom circuit does not describe in detail) of common port.Each root phase line of the input of rectified three-phase circuit all connects common port by current inrush limiter part (thermistor NTC1～NTC3) and the voltage limit device (piezo-resistance MOV1～MOV3) of series connection, having an electric capacity (safety capacitor C X1～CX3) to be connected in parallel on current inrush limiter part and voltage limit device two ends, is wherein the input point that exchanges of this phase line between current inrush limiter part and voltage limit device.
As shown in Figure 4, described EMC filter circuit comprises capacitor C 1, C2 and common mode inductance L1, described capacitor C 1, C2 are connected in parallel on respectively on two coils of common mode inductance L1, capacitor C 1 two ends are two input lines of EMC filter circuit, and capacitor C 2 two ends are two output lines of EMC filter circuit.
The PFC value >0.8 of described valley fill type pfc circuit, improves input direct-current waveform as shown in Figure 4, thereby has greatly reduced humorous wave interference, and valley fill type pfc circuit comprises diode D17～D19, electrochemical capacitor C3, C4; Diode D17 differential concatenation, after the negative pole of electrochemical capacitor C3, is connected in parallel between two output lines of EMC filter circuit together; Diode D19 differential concatenation, after the positive pole of electrochemical capacitor C4, is connected in parallel between two output lines of EMC filter circuit together, and diode D18 is connected between the negative pole of electrochemical capacitor C3 and the positive pole of electrochemical capacitor C4.
As shown in Figure 5, described Single-Chip Switching Mode Power Circuit comprises power supply IC chip U1 (recommend adoption TOP254PN) and peripheral circuit, switching tube Q1 (adopting FQP4N90 high-voltage MOS pipe) and transformer TR1.Described power supply IC chip U1 controls single-phase and three phase rectifier anode and negative terminal later simultaneously, specifically: power supply IC chip U1 is connected with an input line (negative terminal) on the former limit of transformer TR1 by switching tube Q1, power supply IC chip U1 is also connected with another input line (anode) on former limit by high-pressure limit circuit.Described high-pressure limit circuit comprises resistance R 1～R4 and rectifier diode DZ1, the DZ2 of mutual series connection.The former limit of transformer TR1 is provided with inverse peak voltage limiting circuit, comprise voltage stabilizing didoe D20, diode D21, capacitor C 5 and resistance R 8, R9, electric capacity D20 and resistance R 8, R9 are connected in parallel between two input lines on former limit, and voltage stabilizing didoe D20 is connected in parallel on the D20 of two input lines on former limit after connecting with diode D21.The former limit of transformer can arrange one group of coil each chip is powered, also can be directly with external power source to each chip power supply.
The output voltage of above-mentioned several output branch roads is definite as required, between an output branch road and described power supply IC chip U1, optocoupler U2 is set therein and feeds back, and this feedback circuit is custom circuit, at this, does not describe in detail.
Automatic switchover operation principle of the present utility model: when three-phase alternating current existence at ordinary times, single-phase electricity do not exist, the normally closed fixed contact of high-voltage relay J1 and J2 connects rectified three-phase circuit and EMC filter circuit (is connected L3 and C1 in Fig. 1,3,4, and N3 and C2), single-phase electricity disconnects (L2, N2 in Fig. 1,3,4); When as long as single-phase electricity exists, relay J 1, J2 coil obtain electric, moving contact action is connected and is often opened fixed contact, single-phase electricity is connected, disconnect three-phase electricity (no matter three-phase electricity whether) simultaneously, because during single-phase incoming call, accessory power supply is worked immediately to relay J 1, J2 power supply, and single-phase and three-phase electricity automatically switches.
Mode of operation of the present utility model: when there being three-phase alternating current when power supply, the Switching Power Supply power supply of normally working, once there be single-phase alternating current input, control circuit action, cuts off three-phase alternating-current powered, and by single phase power supply, Switching Power Supply is normally non-stop run also; Single-phase and the simultaneous situation of three-phase, three-phase alternating current is without input circuit, and Switching Power Supply is not worked, can only be by single-phase ac power supply; While inputting without three-phase alternating current, Switching Power Supply can only be by single phase power supply; If single-phase and three-phase all do not have electricity, Switching Power Supply can not worked, and ammeter also needn't charging, in logic contradiction not.
Claims (6)
1. single-phase and automatic three-phase switching high voltage source, comprise successively rectified three-phase circuit, EMC filter circuit, valley fill type pfc circuit, Single-Chip Switching Mode Power Circuit and several output branch roads, it is characterized in that: between described rectified three-phase circuit and EMC filter circuit, be provided with relay circuit and the single-phase auxiliary power circuit for automatically switch single phase poaer supply input and three phase mains, inputted;
Described relay circuit is provided with four Z-type contact sets; The normally closed fixed contact of No. one, No. two Z-type contact sets connects respectively two output lines of rectified three-phase circuit, and moving contact connects respectively two input lines of EMC filter circuit, often opens the moving contact that fixed contact connects respectively No. three, No. four Z-type contact sets; No. three, No. four Z-type contact sets often open two phase lines that fixed contact connects respectively single phase poaer supply;
Described single-phase auxiliary power circuit comprises power regulator U3 and peripheral circuit thereof, and the input of power regulator is connected with single phase poaer supply, the coil power supply of output to four Z-type contact sets.
2. single-phase and automatic three-phase switching high voltage source according to claim 1, it is characterized in that: each root phase line of the input of described rectified three-phase circuit all connects common port by current inrush limiter part and the voltage limit device of series connection, is wherein the input point that exchanges of this phase line between current inrush limiter part and voltage limit device.
3. single-phase and automatic three-phase switching high voltage source according to claim 1 and 2, it is characterized in that: described EMC filter circuit comprises capacitor C 1, C2 and common mode inductance L1, described capacitor C 1, C2 are connected in parallel on respectively on two coils of common mode inductance L1, capacitor C 1 two ends are two input lines of EMC filter circuit, and capacitor C 2 two ends are two output lines of EMC filter circuit.
4. single-phase and automatic three-phase switching high voltage source according to claim 3, is characterized in that: described valley fill type pfc circuit comprises diode D17～D19, electrochemical capacitor C3, C4; Diode D17 differential concatenation, after the negative pole of electrochemical capacitor C3, is connected in parallel between two output lines of EMC filter circuit together; Diode D19 differential concatenation, after the positive pole of electrochemical capacitor C4, is connected in parallel between two output lines of EMC filter circuit together, and diode D18 is connected between the negative pole of electrochemical capacitor C3 and the positive pole of electrochemical capacitor C4.
5. single-phase and automatic three-phase switching high voltage source according to claim 4, is characterized in that: described Single-Chip Switching Mode Power Circuit comprises power supply IC chip U1 and peripheral circuit, switching tube Q1 and transformer TR1; Described power supply IC chip U1 is connected with an input line on the former limit of transformer TR1 by switching tube Q1, and power supply IC chip U1 is also connected with another input line on former limit by high-pressure limit circuit.
6. single-phase and automatic three-phase switching high voltage source according to claim 5, is characterized in that: described high-pressure limit circuit comprises resistance R 1～R4 and rectifier diode DZ1, the DZ2 of mutual series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290413.3U CN204030975U (en) | 2014-05-30 | 2014-05-30 | Single-phase and automatic three-phase switching high voltage source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420290413.3U CN204030975U (en) | 2014-05-30 | 2014-05-30 | Single-phase and automatic three-phase switching high voltage source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030975U true CN204030975U (en) | 2014-12-17 |
Family
ID=52070799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420290413.3U Expired - Lifetime CN204030975U (en) | 2014-05-30 | 2014-05-30 | Single-phase and automatic three-phase switching high voltage source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030975U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3242382A1 (en) | 2016-05-04 | 2017-11-08 | ABB Schweiz AG | Ac-to-dc converter system |
| CN107425740A (en) * | 2017-09-22 | 2017-12-01 | 武汉盛帆电子股份有限公司 | A kind of high pressure apparent source and high pressure gauge |
| CN109842287A (en) * | 2019-01-07 | 2019-06-04 | 深圳陆巡科技有限公司 | A kind of pfc circuit and its control method being compatible with the input of single-phase and three-phase alternating current |
-
2014
- 2014-05-30 CN CN201420290413.3U patent/CN204030975U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3242382A1 (en) | 2016-05-04 | 2017-11-08 | ABB Schweiz AG | Ac-to-dc converter system |
| WO2017191245A1 (en) | 2016-05-04 | 2017-11-09 | Abb Schweiz Ag | Ac-to-dc converter system |
| US11050352B2 (en) | 2016-05-04 | 2021-06-29 | Abb Schweiz Ag | AC-to-DC converter system |
| CN107425740A (en) * | 2017-09-22 | 2017-12-01 | 武汉盛帆电子股份有限公司 | A kind of high pressure apparent source and high pressure gauge |
| CN109842287A (en) * | 2019-01-07 | 2019-06-04 | 深圳陆巡科技有限公司 | A kind of pfc circuit and its control method being compatible with the input of single-phase and three-phase alternating current |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103149852B (en) | Control circuit of time relay | |
| CN105958816B (en) | A kind of multiple-unit diode capacitance network and coupling inductance high-gain DC converter | |
| CN201724988U (en) | Input phase failure detector for power unit of high-voltage frequency converter | |
| CN105375435B (en) | Electricity and the Self-power protective device and system of tripping are taken based on three-phase current sensing | |
| WO2016115998A1 (en) | Digitalized double-excitation uninterrupted switching power supply | |
| CN109525132A (en) | A kind of interleaved PFC constant voltage drive circuit, driving power and television set | |
| CN105517650A (en) | Fly-back dc/ac conversion circuit with plurality of windings | |
| CN104578844A (en) | Switching mode power supply circuit | |
| CN102694477B (en) | High-voltage alternating current power supply, low-voltage alternating current power supply and low-voltage direct current power supply common-base circuit | |
| CN204030975U (en) | Single-phase and automatic three-phase switching high voltage source | |
| CN203377777U (en) | A soft start circuit of an auxiliary power supply | |
| CN103872747B (en) | Uninterrupted 12V direct-current power system | |
| CN101969722B (en) | LED drive circuit and LED lamp | |
| RU2637516C2 (en) | Circuit and rectification method for unbalanced two-phase dc network | |
| CN109194103A (en) | A kind of variable-frequency power sources input harmonics suppressing method | |
| CN201097176Y (en) | Power controller | |
| CN102255356A (en) | Efficient uninterruptible power supply | |
| CN202663316U (en) | Circuit with three common-grounded power supplies of high voltage alternating current, low voltage alternating current and low voltage direct current | |
| CN204392101U (en) | AC/DC circuit and switching power supply | |
| CN208561318U (en) | The device and system of elevator device power supply are realized based on elevator power supply device | |
| CN102222966A (en) | Uninterrupted power supply | |
| CN203287705U (en) | Control circuit of time relay | |
| CN205160399U (en) | A power supply unit for elevator band -type brake coil | |
| CN204118734U (en) | PV air-conditioner power supply circuits and PV air-conditioner | |
| CN109391138A (en) | A kind of offset-type regulated power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141217 |