CN203278681U - Wide-range electromotor protection device power source - Google Patents

Wide-range electromotor protection device power source Download PDF

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Publication number
CN203278681U
CN203278681U CN 201320200650 CN201320200650U CN203278681U CN 203278681 U CN203278681 U CN 203278681U CN 201320200650 CN201320200650 CN 201320200650 CN 201320200650 U CN201320200650 U CN 201320200650U CN 203278681 U CN203278681 U CN 203278681U
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China
Prior art keywords
access
diode
resistance
electric capacity
transformer
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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 - Fee Related
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CN 201320200650
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Chinese (zh)
Inventor
周建锋
张波
朱海鹏
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JIANGSU EASTSONG ELECTRIC CO Ltd
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JIANGSU EASTSONG ELECTRIC CO Ltd
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Priority to CN 201320200650 priority Critical patent/CN203278681U/en
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Abstract

The utility model relates to a wide-range electromotor protection device power source, wherein an alternating current live wire is connected with one input end of an EMI wave filtering device after passing through a thermistor (RT1), an alternating current zero line is connected with the other input end of the EMI wave filtering device, a first capacitor (C1) and a second capacitor (C2) are connected in series between the two input ends of the EMI wave filtering device, a voltage dependent resistor (RV1) is connected in parallel on the first capacitor (C1) and the second capacitor (C2), connection points of the first capacitor (C1) and the second capacitor (C2) are grounded after passing through the resistor and the capacitors, a forth capacitor (C4) is connected in series between the output ends of the EMI wave filtering device, and the output ends of the EMI wave filtering device output direct currents through a bridge type rectification circuit (U1). The wide-range electromotor protection device power source of the utility model is advantaged by good stability and high security.

Description

A kind of wide region motor protecter power supply
Technical field
The utility model relates to a kind of wide region motor protecter power supply, belongs to power technique fields.
Background technology
Power supply, as one of nucleus equipment of electric product, its stability is directly determining quality and the useful life of product; Power supply is equivalent to the heart of product in the use procedure of electric product; power supply is unstable will cause the work that whole product can not be stable; and sometimes can run into voltage fluctuation and shake electric situation in actual electric power and distribution system; particularly in electric motor starting; cause supply voltage sharply to descend; may cause the protector cisco unity malfunction, thereby cause power consumption equipment unstable, cause sometimes the generation of fault.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of good stability, safe wide region motor protecter power supply are provided.
The purpose of this utility model is achieved in that a kind of wide region motor protecter power supply, alternating current fire wire accesses the input of electromagnetic interface filter after thermistor, another input of alternating current zero line access electromagnetic interface filter, and be connected with electric capacity one and electric capacity two between two inputs of electromagnetic interface filter, there is a piezo-resistance to be parallel on electric capacity one and electric capacity two, the tie point of electric capacity one and electric capacity two is ground connection after resistance and electric capacity, be in series with electric capacity four between the output of electromagnetic interface filter, the output of described electromagnetic interface filter is through the bridge rectifier output DC;
be in series with electric capacity five and electric capacity six between the direct current both positive and negative polarity of above-mentioned bridge rectifier output, described direct current positive pole is successively through resistance three, resistance four, resistance five, the anodal rear access direct current negative pole of the negative pole of diode one and diode one, the direct current positive pole accesses the drain electrode of MOSFET device after the primary coil of transformer, and the direct current positive pole is through the positive pole of diode two, the negative pole of diode two, the drain electrode of the anodal rear access MOSFET device of the negative pole of diode four and diode four, be parallel with a diode three on diode two, the grid access resistance four of described MOSFET device and the tie point between resistance five, the grid of the source electrode of described MOSFET device access MOSFET device after the negative pole of the positive pole of diode five and diode five, and on the D pin of the source electrode of MOSFET device access power drives chip, the model of power drives chip is TNY276, the galvanic negative pole of S pin access of power drives chip, the output of the EN/UV pin access optocoupler of power drives chip, another output of optocoupler is through the BP/M pin of electric capacity seven access power drives chips, and the galvanic negative pole of the rear access of BP/M foot meridian capacitor seven of power drives chip, the rear access of BP/M foot meridian capacitor seven HG of while power drives chip, be serially connected with resistance seven between two inputs of described optocoupler, and an input of optocoupler is through the secondary coil of resistance six access transformers, the negative pole of another input access pressurizer of described optocoupler, the model of pressurizer is TL431, the plus earth of described pressurizer, the reference utmost point of pressurizer is through the negative pole of electric capacity access pressurizer, the reference utmost point of pressurizer is through resistance nine ground connection, the reference utmost point of pressurizer is through the secondary coil of resistance eight access transformers.
The utility model wide region motor protecter power supply, the VSIG node of an input of optocoupler on the secondary coil of resistance six access transformers, the V24V node of the reference utmost point of pressurizer on the secondary coil of resistance eight access transformers; The secondary coil of transformer is output node V24V after the negative pole of the positive pole of diode nine, diode nine and inductance, and is the VSIG node between diode nine and inductance, the negative pole of diode nine ground connection after electric capacity, and output node V24V is through capacity earth.
A kind of wide region motor protecter of the utility model power supply, described transformer has five secondary winding,
The magnetic core cross section of transformer is 0.448 cm 2, inductance coefficent is 1400nH/N 2
The primary coil diameter of wire 0.348mm of transformer;
The secondary coil diameter of wire 1.15 ~ 1.49mm of transformer;
The primary coil winding 92 of transformer;
Five secondary coil windings of transformer are respectively 5,16,8,16 and 24.
Compared with prior art, the beneficial effects of the utility model are:
The non-constant width of the utility model operating voltage range reaches AC/DC 50~500V; Add electromagnetic interface filter in the rectifying and wave-filtering process, effectively raise the quality of power supply, power drives chip in subsequent control adopts the chip of TNY276 model, it can take the Flybac working method, adopt FM Architecture Switch variable frequency work pattern, support wide-range input voltage AC/DC 50~500V; Plurality of voltages isolation output, each output voltage is independent of each other; According to load automatic power adjustment size; Carry EMI filtering, effectively prevent the interference of outside input; Carry overload, overvoltage, overtemperature protection.This power-supply system cost is low, efficient is high, working stability, reliable.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of wide region motor protecter of the utility model power supply.
Fig. 2 is the circuit block diagram of the transformer terminal of a kind of wide region motor protecter of the utility model power supply.
Embodiment
referring to Fig. 1, a kind of wide region motor protecter power supply that the utility model relates to, alternating current fire wire accesses the input of electromagnetic interface filter after thermistor RT1, another input of alternating current zero line access electromagnetic interface filter, and be connected with electric capacity one C1 between two inputs of electromagnetic interface filter and electric capacity two C2 form first anti-interference, there is a piezo-resistance RV1 to be parallel on electric capacity one C1 and electric capacity two C2, thermistor RT1 and piezo-resistance RV1 play input overvoltage and input overcurrent protection, ground connection is (concretely after resistance and electric capacity for the tie point of electric capacity one C1 and electric capacity two C2, the tie point of electric capacity one C1 and electric capacity two C2 is divided into two-way, one the tunnel directly accesses power supply ground, signal ground is accessed in another road after resistance and electric capacity), be in series with electric capacity four C4 between the output of electromagnetic interface filter, this electric capacity four C4 play secondary anti-interference effect, the output of described electromagnetic interface filter is through bridge rectifier U1 output DC,
when being in series with electric capacity five C5 and electric capacity six C6(use between the direct current both positive and negative polarity of above-mentioned bridge rectifier U1 output, the withstand voltage 400V that is that electric capacity five C5 and electric capacity six C6 adopt, both withstand voltage 800V of reaching of later stage that connect), be in series with resistance one R32 and resistance two R33 between the direct current both positive and negative polarity of bridge rectifier U1 output, described direct current positive pole is successively through resistance three R34, resistance four R35, resistance five R36, the anodal rear access direct current negative pole of the negative pole of diode one D1 and diode one D1, the direct current positive pole accesses the drain electrode (D) of MOSFET device U3 after the primary coil of transformer T1, and the direct current positive pole is through the positive pole of diode two D2, the negative pole of diode two D2, the drain electrode of the anodal rear access MOSFET device U3 of the negative pole of diode four D4 and diode four D4, be parallel with diode three D3 on diode two D2, and the positive pole of the positive pole of diode three D3 access diode two D2, the negative pole of negative pole access diode two D2 of diode three D3, grid (G) access resistance four R35 of described MOSFET device U3 and the tie point between resistance five R36, the grid of the source electrode (S) of described MOSFET device U3 access MOSFET device U3 after the negative pole of the positive pole of diode five D5 and diode five D5, and on the D pin of the source electrode of MOSFET device U3 access power drives chip U2, the model of power drives chip U2 is TNY276, the galvanic negative pole of S pin access of power drives chip U2, the output of the EN/UV pin access optocoupler U4 of power drives chip U2, another output of optocoupler U4 is through the BP/M pin of electric capacity seven C7 access power drives chip U2, and the galvanic negative pole of access after BP/M foot meridian capacitor seven C7 of power drives chip U2, after BP/M foot meridian capacitor seven C7 of power drives chip U2, access HG(HG is High Voltage Ground simultaneously, high pressure ground in the design of expression Switching Power Supply), be serially connected with resistance seven R40 between two inputs of described optocoupler U4, and the input of optocoupler U4 is through the secondary coil of resistance six R37 access transformer T1, the negative pole of another input access pressurizer U10 of described optocoupler U4, the model of pressurizer U10 is TL431, the plus earth of described pressurizer U10, the reference utmost point of pressurizer U10 is through the negative pole of electric capacity access pressurizer U10, the reference utmost point of pressurizer U10 is through resistance nine R42 ground connection, the reference utmost point of pressurizer U10 is through the secondary coil of resistance eight R41 access transformer T1,
Preferably, the VSIG node of the input of optocoupler U4 on the secondary coil of resistance six R37 access transformer T1, the V24V node of the reference utmost point of pressurizer U10 on the secondary coil of resistance eight R41 access transformer T1;
Referring to Fig. 2, transformer T1 has five secondary coils, one of them secondary coil is output node V24V after the negative pole of the positive pole of diode nine D9, diode nine D9 and inductance L 1, and be the VSIG node between diode nine D9 and inductance L 1, negative pole ground connection after electric capacity of diode nine D9, output node V24V is through capacity earth;
During work: by VSIG node and V24V node, the output voltage on transformer T1 secondary coil is monitored, when abnormal generation is arranged, can trigger power drives chip U2 by optocoupler U4 controls the input on transformer T1 primary coil, thereby consist of a feedback loop, improved accuracy and the stability of whole power supply;
Simultaneously, for transformer T1, it has five secondary winding, and design parameter is:
The magnetic core cross section is 0.448 cm 2, inductance coefficent is 1400nH/N 2
Primary coil diameter of wire 0.348mm;
The secondary coil diameter of wire 1.15 ~ 1.49mm;
Primary coil winding 92;
Five secondary coil windings are respectively 5,16,8,16 and 24;
The AC/DC scope of the transformer T1 of said structure is 50 ~ 500V;
Above-mentioned embodiment is only a prioritization scheme, and those skilled in the art's improvement that design is done according to this patent is all within this patent protection range.

Claims (3)

1. wide region motor protecter power supply, it is characterized in that: alternating current fire wire accesses the input of electromagnetic interface filter after thermistor (RT1), another input of alternating current zero line access electromagnetic interface filter, and be connected with electric capacity one (C1) and electric capacity two (C2) between two inputs of electromagnetic interface filter, there is a piezo-resistance (RV1) to be parallel on electric capacity one (C1) and electric capacity two (C2), the tie point of electric capacity one (C1) and electric capacity two (C2) ground connection after resistance and electric capacity, be in series with electric capacity four (C4) between the output of electromagnetic interface filter, the output of described electromagnetic interface filter is through bridge rectifier (U1) output DC,
be in series with electric capacity five (C5) and electric capacity six (C6) between the direct current both positive and negative polarity of above-mentioned bridge rectifier (U1) output, described direct current positive pole is successively through resistance three (R34), resistance four (R35), resistance five (R36), the anodal rear access direct current negative pole of the negative pole of diode one (D1) and diode one (D1), the direct current positive pole accesses the drain electrode of MOSFET device (U3) after the primary coil of transformer (T1), and the direct current positive pole is through the positive pole of diode two (D2), the negative pole of diode two (D2), the drain electrode of the anodal rear access MOSFET device (U3) of the negative pole of diode four (D4) and diode four (D4), be parallel with a diode three (D3) on diode two (D2), the grid access resistance four (R35) of described MOSFET device (U3) and the tie point between resistance five (R36), the grid of the source electrode of described MOSFET device (U3) access MOSFET device (U3) after the negative pole of the positive pole of diode five (D5) and diode five (D5), and on the D pin of the source electrode of MOSFET device (U3) access power drives chip (U2), the model of power drives chip (U2) is TNY276, the galvanic negative pole of S pin access of power drives chip (U2), the output of the EN/UV pin access optocoupler (U4) of power drives chip (U2), another output of optocoupler (U4) is through the BP/M pin of electric capacity seven (C7) access power drives chip (U2), and the galvanic negative pole of access after the BP/M foot meridian capacitor seven (C7) of power drives chip (U2), be serially connected with resistance seven (R40) between two inputs of described optocoupler (U4), and an input of optocoupler (U4) is through the secondary coil of resistance six (R37) access transformer (T1), the negative pole of another input access pressurizer (U10) of described optocoupler (U4), the model of pressurizer (U10) is TL431, the plus earth of described pressurizer (U10), the reference utmost point of pressurizer (U10) accesses the negative pole of pressurizer (U10) through electric capacity, the reference utmost point of pressurizer (U10) is through resistance nine (R42) ground connection, the reference utmost point of pressurizer (U10) is through the secondary coil of resistance eight (R41) access transformer (T1).
2. a kind of wide region motor protecter power supply as claimed in claim 1, it is characterized in that: the VSIG node of an input of optocoupler (U4) on the secondary coil of resistance six (R37) access transformer (T1), the V24V node of the reference utmost point of pressurizer (U10) on the secondary coil of resistance eight (R41) access transformer (T1); The secondary coil of transformer (T1) is output node V24V after the negative pole of the positive pole of diode nine (D9), diode nine (D9) and inductance (L1), and be the VSIG node between diode nine (D9) and inductance (L1), negative pole ground connection after electric capacity of diode nine (D9), output node V24V is through capacity earth.
3. a kind of wide region motor protecter power supply as claimed in claim 1 or 2, it is characterized in that: described transformer (T1) has five secondary winding,
The magnetic core cross section of transformer (T1) is 0.448 cm 2, inductance coefficent is 1400nH/N 2
The primary coil diameter of wire 0.348mm of transformer (T1);
The secondary coil diameter of wire 1.15 ~ 1.49mm of transformer (T1);
The primary coil winding 92 of transformer (T1);
Five secondary coil windings of transformer (T1) are respectively 5,16,8,16 and 24.
CN 201320200650 2013-04-20 2013-04-20 Wide-range electromotor protection device power source Expired - Fee Related CN203278681U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320200650 CN203278681U (en) 2013-04-20 2013-04-20 Wide-range electromotor protection device power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320200650 CN203278681U (en) 2013-04-20 2013-04-20 Wide-range electromotor protection device power source

Publications (1)

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CN203278681U true CN203278681U (en) 2013-11-06

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236784A (en) * 2013-04-20 2013-08-07 江苏东歌电气有限公司 Power supply for wide-scope motor protector
CN103997199A (en) * 2014-05-28 2014-08-20 合肥华耀电子工业有限公司 Active power factor correction circuit with fault detection function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103236784A (en) * 2013-04-20 2013-08-07 江苏东歌电气有限公司 Power supply for wide-scope motor protector
CN103997199A (en) * 2014-05-28 2014-08-20 合肥华耀电子工业有限公司 Active power factor correction circuit with fault detection function

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106

Termination date: 20160420

CF01 Termination of patent right due to non-payment of annual fee