CN103236784A - Power supply for wide-scope motor protector - Google Patents
Power supply for wide-scope motor protector Download PDFInfo
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- CN103236784A CN103236784A CN2013101376830A CN201310137683A CN103236784A CN 103236784 A CN103236784 A CN 103236784A CN 2013101376830 A CN2013101376830 A CN 2013101376830A CN 201310137683 A CN201310137683 A CN 201310137683A CN 103236784 A CN103236784 A CN 103236784A
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Abstract
The invention relates to a power supply for a wide-scope motor protector, wherein an alternating current live wire is connected into one input end of an EMI (electromagnetic interference) filter after passing through a thermal resistor (RT1), an alternating current earth line is connected into the other input end of the EMI filter, a capacitor NO.1 (C1) and a capacitor NO.2 (C2) are connected between the two input ends of the EMI filter in series, a piezoresistor (RV1) is connected onto the capacitor NO.1 (C1) and the capacitor NO.2 (C2) in parallel, a connecting point of the capacitor NO.1 (C1) and the capacitor NO.2 (C2) is grounded after passing through the resistors and the capacitors, a capacitor NO.4 (C4) is connected between output ends of the EMI filter in parallel, and the output ends of the EMI filter are used for outputting direct current through a bridge type rectification circuit (U1). The power supply for the wide-scope motor protector is excellent in stability and high in safety.
Description
Technical field
The present invention relates to a kind of wide region motor protecter power supply, belong 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 of electric product; the power supply instability will cause the work that entire product can not be stable; and in actual electric power and distribution system, sometimes can run into voltage fluctuation and shake electric situation; particularly in electric motor starting; cause supply voltage sharply to descend; may cause the protector cisco unity malfunction, thereby cause the power consumption equipment instability, cause the generation of fault sometimes.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of good stability, safe wide region motor protecter power supply are provided.
The object of the present invention is achieved like this: a kind of wide region motor protecter power supply, alternating current fire wire inserts the input of electromagnetic interface filter behind thermistor, the alternating current zero line inserts another input of 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 the electric capacity two, the tie point of electric capacity one and electric capacity two is ground connection behind 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 direct current negative pole is inserted in the anodal back of the negative pole of diode one and diode one, the direct current positive pole inserts the drain electrode of MOSFET device behind 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 MOSFET device is inserted in the anodal back of the negative pole of diode four and diode four, be parallel with a diode three on the diode two, the grid of described MOSFET device inserts the tie point between resistance four and the resistance five, the source electrode of described MOSFET device inserts the grid of MOSFET device behind the negative pole of the positive pole of diode five and diode five, and the source electrode of MOSFET device inserts on the D pin of power drives chip, the model of power drives chip is TNY276, the S pin of power drives chip inserts galvanic negative pole, the EN/UV pin of power drives chip inserts the output of optocoupler, another output of optocoupler inserts the BP/M pin of power drives chip through electric capacity seven, and galvanic negative pole is inserted in BP/M foot meridian capacitor seven backs of power drives chip, HG is inserted in BP/M foot meridian capacitor seven backs of power drives chip simultaneously, be serially connected with resistance seven between two inputs of described optocoupler, and an input of optocoupler inserts the secondary coil of transformer through resistance six, another input of described optocoupler inserts the negative pole of pressurizer, the model of pressurizer is TL431, the plus earth of described pressurizer, the reference utmost point of pressurizer inserts the negative pole of pressurizer through electric capacity, the reference utmost point of pressurizer is through resistance nine ground connection, and the reference utmost point of pressurizer inserts the secondary coil of transformer through resistance eight.
Wide region motor protecter power supply of the present invention, 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 behind the negative pole of the positive pole of diode nine, diode nine and inductance, and is the VSIG node between diode nine and the inductance, the negative pole of diode nine ground connection behind electric capacity, and output node V24V is through capacity earth.
A kind of wide region motor protecter of the present invention 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 invention has the beneficial effects as follows:
The non-constant width of operating voltage range of the present invention 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 the subsequent control adopts the chip of TNY276 model, it can take the Flybac working method, adopt FM Architecture Switch frequency conversion mode of operation, support wide region input voltage AC/DC 50～500V; Plurality of voltages is isolated output, and 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 present invention power supply.
Fig. 2 is the circuit block diagram of the transformer terminal of a kind of wide region motor protecter of the present invention power supply.
Embodiment
Referring to Fig. 1, a kind of wide region motor protecter power supply that the present invention relates to, alternating current fire wire inserts the input of electromagnetic interface filter behind thermistor RT1, the alternating current zero line inserts another input of 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 behind 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 inserts power supply ground, signal ground is inserted in another road behind 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, and 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 direct current negative pole is inserted in the anodal back of the negative pole of diode one D1 and diode one D1, the direct current positive pole inserts the drain electrode (D) of MOSFET device U3 behind 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 MOSFET device U3 is inserted in the anodal back of the negative pole of diode four D4 and diode four D4, be parallel with a diode three D3 on diode two D2, and the positive pole of diode three D3 inserts the positive pole of diode two D2, the negative pole of diode three D3 inserts the negative pole of diode two D2, the grid (G) of described MOSFET device U3 inserts the tie point between resistance four R35 and resistance five R36, the source electrode (S) of described MOSFET device U3 inserts the grid of MOSFET device U3 behind the negative pole of the positive pole of diode five D5 and diode five D5, and the source electrode of MOSFET device U3 inserts on the D pin of power drives chip U2, the model of power drives chip U2 is TNY276, the S pin of power drives chip U2 inserts galvanic negative pole, the EN/UV pin of power drives chip U2 inserts the output of optocoupler U4, another output of optocoupler U4 inserts the BP/M pin of power drives chip U2 through electric capacity seven C7, and insert galvanic negative pole behind BP/M foot meridian capacitor seven C7 of power drives chip U2, insert HG(HG behind BP/M foot meridian capacitor seven C7 of power drives chip U2 simultaneously and be High Voltage Ground, 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 inserts the secondary coil of transformer T1 through resistance six R37, another input of described optocoupler U4 inserts the negative pole of pressurizer U10, the model of pressurizer U10 is TL431, the plus earth of described pressurizer U10, the reference utmost point of pressurizer U10 inserts the negative pole of pressurizer U10 through electric capacity, the reference utmost point of pressurizer U10 is through resistance nine R42 ground connection, and the reference utmost point of pressurizer U10 inserts the secondary coil of transformer T1 through resistance eight R41;
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 the inductance L 1, negative pole ground connection behind 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 the transformer T1 secondary coil is monitored, when unusual generation, can control by the input that optocoupler U4 triggers on the transformer T1 of the power drives chip U2 primary coil, thereby constitute a feedback loop, improved accuracy and the stability of whole power supply;
Simultaneously, for transformer T1, it has five secondary winding, and concrete 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 only is 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 inserts the input of electromagnetic interface filter behind thermistor (RT1), the alternating current zero line inserts another input of 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 the electric capacity two (C2), the tie point of electric capacity one (C1) and electric capacity two (C2) ground connection behind 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 direct current negative pole is inserted in the anodal back of the negative pole of diode one (D1) and diode one (D1), the direct current positive pole inserts the drain electrode of MOSFET device (U3) behind 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 MOSFET device (U3) is inserted in the anodal back of the negative pole of diode four (D4) and diode four (D4), be parallel with a diode three (D3) on the diode two (D2), the grid of described MOSFET device (U3) inserts the tie point between resistance four (R35) and the resistance five (R36), the source electrode of described MOSFET device (U3) inserts the grid of MOSFET device (U3) behind the negative pole of the positive pole of diode five (D5) and diode five (D5), and the source electrode of MOSFET device (U3) inserts on the D pin of power drives chip (U2), the model of power drives chip (U2) is TNY276, the S pin of power drives chip (U2) inserts galvanic negative pole, the EN/UV pin of power drives chip (U2) inserts the output of optocoupler (U4), another output of optocoupler (U4) inserts the BP/M pin of power drives chip (U2) through electric capacity seven (C7), and galvanic negative pole is inserted in the BP/M foot meridian capacitor seven (C7) of power drives chip (U2) back, be serially connected with resistance seven (R40) between two inputs of described optocoupler (U4), and an input of optocoupler (U4) inserts the secondary coil of transformer (T1) through resistance six (R37), another input of described optocoupler (U4) inserts the negative pole of pressurizer (U10), the model of pressurizer (U10) is TL431, the plus earth of described pressurizer (U10), the reference utmost point of pressurizer (U10) inserts the negative pole of pressurizer (U10) through electric capacity, the reference utmost point of pressurizer (U10) is through resistance nine (R42) ground connection, and the reference utmost point of pressurizer (U10) inserts the secondary coil of transformer (T1) through resistance eight (R41).
2. a kind of wide region motor protecter power supply according to 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 behind 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 the inductance (L1), negative pole ground connection behind 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101376830A CN103236784A (en) | 2013-04-20 | 2013-04-20 | Power supply for wide-scope motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101376830A CN103236784A (en) | 2013-04-20 | 2013-04-20 | Power supply for wide-scope motor protector |
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| Publication Number | Publication Date |
|---|---|
| CN103236784A true CN103236784A (en) | 2013-08-07 |
Family
ID=48884807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101376830A Pending CN103236784A (en) | 2013-04-20 | 2013-04-20 | Power supply for wide-scope motor protector |
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| Country | Link |
|---|---|
| CN (1) | CN103236784A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08126314A (en) * | 1994-10-25 | 1996-05-17 | Nissin Electric Co Ltd | Multi-output controlled power supply |
| CN201294455Y (en) * | 2008-08-29 | 2009-08-19 | 比亚迪股份有限公司 | Power-supply module for machine controller and machine controller |
| CN202004651U (en) * | 2011-02-17 | 2011-10-05 | 昂宝电子（上海）有限公司 | Switching power supply circuit for flyback structure |
| CN203278681U (en) * | 2013-04-20 | 2013-11-06 | 江苏东歌电气有限公司 | Wide-range electromotor protection device power source |
-
2013
- 2013-04-20 CN CN2013101376830A patent/CN103236784A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08126314A (en) * | 1994-10-25 | 1996-05-17 | Nissin Electric Co Ltd | Multi-output controlled power supply |
| CN201294455Y (en) * | 2008-08-29 | 2009-08-19 | 比亚迪股份有限公司 | Power-supply module for machine controller and machine controller |
| CN202004651U (en) * | 2011-02-17 | 2011-10-05 | 昂宝电子（上海）有限公司 | Switching power supply circuit for flyback structure |
| CN203278681U (en) * | 2013-04-20 | 2013-11-06 | 江苏东歌电气有限公司 | Wide-range electromotor protection device power source |
Non-Patent Citations (1)
| Title |
|---|
| 陈崇森 等: "一种交流伺服系统的多输出辅助开关电源设计", 《电源技术应用》 * |
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Application publication date: 20130807 |
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| RJ01 | Rejection of invention patent application after publication |