CN203056982U - Integrated frequency converter used for gang saw machine - Google Patents
Integrated frequency converter used for gang saw machine Download PDFInfo
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- CN203056982U CN203056982U CN 201220694294 CN201220694294U CN203056982U CN 203056982 U CN203056982 U CN 203056982U CN 201220694294 CN201220694294 CN 201220694294 CN 201220694294 U CN201220694294 U CN 201220694294U CN 203056982 U CN203056982 U CN 203056982U
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Abstract
The utility model provides an integrated frequency converter used for a gang saw machine, belongs to the technical field of a frequency converter, and helps to solve problems that a motor and electrical network currents are greatly impacted when a conventional gang saw machine is started. The integrated frequency converter used for the gang saw machine is connected between an input power source of the gang saw machine and a motor. The integrated frequency converter comprises a three-phase bridge rectifier circuit, a charging loop circuit, a first filter circuit, a first inversion circuit, a main control board, an isolation drive board/power board and a man-machine exchange interface connected with the main control board. The three-phase bridge rectifier circuit has an input R end, an input S end and an input T end which are all connected with the input power source. The first inversion circuit has an output U end, an output V end and an output W end which are all connected with the motor. The three-phase bridge rectifier circuit, the charging loop circuit, the first filter circuit and the first inversion circuit are electrically connected in order. The main control board is electrically connected with the first inversion circuit via the isolation drive board/power board. The advantages are that the frequency converter of the utility model is capable of minimizing current impact when the gang saw machine is started and adjusting speed of the motor.
Description
Technical field
The utility model belongs to the converter technology field, relates to a kind of for the integrated frequency converter on the gang saw mill.
Background technology
Gang saw mill as a kind of special equipment of processing of stone industry, than traditional cutting method and equipment, has the advantage that tangible process velocity is fast, product quality is high, therefore, is widely used in field of stone processing such as all kinds of marbles.
For a long time, gang saw mill all adopts power frequency supply control to the processing of stone material, but the drawback of using like this is also apparent: at first, adopt power frequency supply to start, instantaneous large-current causes very big impact to motor and electrical network, and shorten the useful life of motor.Secondly, equipment operates in work frequency, can't adjust rotating speed, in the cutting of stone material plate, especially causes its damage in beginning and the end processing period of stone material easily, has a strong impact on working (machining) efficiency and quality.At last, though most of enterprise can adopt crosstalk resistance debugging, but still can't realize stepless speed control, can cause stone surface to form ripple glaze, and if the regenerative electric energy consumption that motor braking is produced on resistance, can cause the significant wastage of electric energy, cost also can rise thereupon.
Along with the fast development of power electronics industry, frequency converter relies on its Frequency Conversion and Speed Regulation Technique efficiently, and good energy-saving and cost-reducing theory becomes the indispensable visual plant of industrial control field gradually.Especially at the processing of stone industry, along with generally popularization and the use of frequency converter on its industry, safe, efficient, practicality has become the important performance indexes of weighing frequency converter.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of integrated frequency converter on the gang saw mill of being used for little to the impact of motor and electrical network and that can carry out speed governing to motor that can make during power initiation.
The purpose of this utility model can realize by following technical proposal: a kind of for the integrated frequency converter on the gang saw mill, be connected between the input power supply and motor of gang saw mill, it is characterized in that: this integrated frequency converter comprises three-phase bridge rectifier circuit, the charge circuit circuit, filter circuit one, inverter circuit one, master control borad, isolation drive plate/power panel and the alternating interface between man and computer that is connected with master control borad, described three-phase bridge rectifier circuit has the input R end that is connected with the input power supply, S end and T end, described inverter circuit one has the output U end that is connected with motor, V end and W end, described three-phase bridge rectifier circuit, the charge circuit circuit, filter circuit one and inverter circuit one are electrically connected successively, and described master control borad is electrically connected with above-mentioned inverter circuit one by isolation drive plate/power panel.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, described charge circuit circuit is connected and forms by charging resistor and contactor one are in parallel.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, described filter circuit one is made of four groups of identical filter units of structure, every group of filter unit is formed in parallel by a capacitor C and resistance R, and the circuit that forms after the circuit that forms after wherein two groups of filter units are connected in series and other two groups of filter units are connected in series is arranged in parallel.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, described inverter circuit one comprises the inversion unit that three groups of structures are identical and be arranged in parallel, every group of inversion unit is in series by structure identical inversion subelement one and inversion subelement two, inversion subelement one comprises transistor IGBT-1 and the diode D1 of connection parallel with one another, the negative pole of diode D1 is connected with the collector electrode of transistor IGBT-1, the positive pole of diode D1 is connected with the emitter of transistor IGBT-1, inversion subelement two comprises transistor IGBT-2 and the diode D2 of connection parallel with one another, the negative pole of diode D2 is connected with the collector electrode of transistor IGBT-2, the positive pole of diode D2 is connected with the emitter of transistor IGBT-2, the emitter of transistor IGBT-1 is connected with the collector electrode of transistor IGBT-2, the gate pole of transistor IGBT-2 is connected with above-mentioned isolation drive plate/power panel, above-mentioned output U end, V end and W end are respectively by drawing between the inversion subelement one in three groups of inversion units and the inversion subelement two.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, the negative pole end DC-and the positive terminal DC+ that have dc bus on the described integrated frequency converter, two outputs of above-mentioned filter circuit one are connected with two inputs of inverter circuit one with positive terminal DC+ by above-mentioned negative pole end DC-respectively.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, also be provided with the electric energy feedback circuit on the described integrated frequency converter, the electric energy feedback circuit comprises filter circuit two, inverter circuit two and the isolation drive plate that is connected with above-mentioned master control borad, described filter circuit two have two inputs and wherein an end be connected with the positive terminal DC+ of above-mentioned dc bus by contactor two, the other end is connected with the negative pole end DC-of above-mentioned dc bus, the output of filter circuit two is connected with inverter circuit two, and described inverter circuit two is connected with the isolation drive plate and draws respectively the end with above-mentioned R on it, three outputs that the S end is connected with the T end.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, three outputs of described inverter circuit two are connected with reactor respectively and between above-mentioned R end, S end and the T end.
Reactor is added on the three-phase output end, and purpose is to prevent humorous wave interference and reduce leakage current.
Above-mentioned a kind of for the integrated frequency converter on the gang saw mill, described isolation drive plate comprises drive circuit two and the testing circuit two that is connected with above-mentioned master control borad, the gate pole of the transistor IGBT-2 in every group of above-mentioned inversion unit is connected with drive circuit two, and three outputs of above-mentioned inverter circuit two are connected with testing circuit two.
Compared with prior art, this integrated frequency converter that is used on the gang saw mill has following several advantage:
1, can realize the soft start of motor, reduce instantaneous large-current to the impact of motor and eliminate huge fluctuation to electrical network;
2, can realize main motor by regulating converter parameter, the stepless speed control of move left and right motor, bottom and top feed motor and cooling water supply motor promotes the gang saw mill whole work efficiency;
3, multiple protection functions and remote monitoring functions such as the overvoltage of frequency converter, overcurrent, overload, short circuit, thus make stability, the reliability of motor operation be guaranteed;
4, the electric energy feedback circuit by feeding back the input that is added to frequency converter again, installs the electric energy of motor generation additional reactor, has avoided harmonic pollution, makes power factor significantly promote, and has realized the efficient utilance of electric energy.
Description of drawings
Fig. 1 is the main electrical connection diagram in the utility model.
Fig. 2 is the electrical connection diagram of electric energy feedback circuit in the utility model.
Fig. 3 is connecting structure for electrical equipment schematic diagram of the present utility model.
Among the figure, 1, three-phase bridge rectifier circuit; 2, charge circuit circuit; 3, filter circuit one; 4, inverter circuit one; 5, contactor two; 6, filter circuit two; 7, inverter circuit two.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Shown in Fig. 1,2 and 3, this integrated frequency converter that is used on the gang saw mill is connected between the input power supply and motor of gang saw mill, comprises the negative pole end DC-and positive terminal DC+, inverter circuit 1, master control borad, isolation drive plate/power panel, the alternating interface between man and computer that is connected with master control borad and electric energy feedback circuit of three-phase bridge rectifier circuit 1, charge circuit circuit 2, filter circuit 1, dc bus.Three-phase bridge rectifier circuit 1, charge circuit circuit 2, filter circuit 1 and inverter circuit 1 are electrically connected successively, master control borad is electrically connected with above-mentioned inverter circuit 1 by isolation drive plate/power panel, and two outputs of filter circuit 1 pass through negative pole end DC-respectively and are connected with two inputs of inverter circuit 1 with positive terminal DC+.Three-phase bridge rectifier circuit 1 has input R end, S end and the T end that is connected with the input power supply, and three-phase bridge rectifier circuit 1 is used for the direct current of industrial frequency AC electric rectification for pulsation used for subordinate's circuit.
Isolation drive plate/power panel is provided with switching power circuit one and the drive circuit one that is electrically connected with switching power circuit one, testing circuit one, and master control borad is electrically connected with drive circuit one, testing circuit one and switching power circuit one respectively and can be by the above-mentioned inverter circuit work of drive circuit one control.Testing circuit one mainly carries out amplification and the comparison of signal by the operational amplifier on it and auxiliary circuit to sampling resistor, thereby realizes multinomial defencive function.Drive circuit one is exported corresponding SPWM pulse by main control chip and auxiliary circuit, thereby the switching rate of control IGBT gate pole finally reaches the purpose of regulating output voltage and output frequency.Testing circuit one mainly carries out amplification and the comparison of signal by operational amplifier and auxiliary circuit to sampling resistor, realizes multinomial defencive function.
The electric energy feedback circuit comprises filter circuit 26, inverter circuit 27 and the isolation drive plate that is connected with master control borad, filter circuit 26 have two inputs and wherein an end be connected with the positive terminal DC+ of dc bus by contactor 25, the other end is connected with the negative pole end DC-of dc bus, the output of filter circuit 26 is connected with inverter circuit 27, and inverter circuit 27 is connected with the isolation drive plate and draws respectively three outputs that are connected with R end, S end and T end on it and this three outputs are held with R end, S and T is connected with reactor respectively between holding.The isolation drive plate comprises drive circuit two and the testing circuit two that is connected with master control borad, the gate pole of the transistor IGBT-2 in every group of inversion unit is connected with drive circuit two, three outputs of inverter circuit 27 are connected with testing circuit two, and testing circuit two is used for the voltage on three outputs, the detection of electric current.The inverter circuit 27 main responsible direct currents that will be fed back to the bus place are converted to alternating current and deliver to the electrical network end; Filter circuit 26 is used for the direct current of pulsation is carried out filtering, makes the mild and stable of its change.
Behind power supply input three-phase bridge rectifier circuit 1, three-phase bridge rectifier circuit 1 is by the rectified action of six diodes, alternating current is converted to the direct current of pulsation, give large bulk capacitance C charging by charging resistor again, electrochemical capacitor C begins to carry out energy storage, after to be charged the finishing, contactor one receives the adhesive signal of master control borad, with the charging resistor short circuit, at this moment, just finish the action that powers on of frequency converter.Afterwards, one 3 pairs of direct currents of filter circuit carry out flat ripple, and inverter circuit 1 is converted to direct current the alternating current output of size and frequency adjustable.
When machine operation during at generating state, the electric energy that motor produces feeds back to the dc bus place by inverter circuit 27, when the voltage of dc bus surpasses the inner setting value of energy feedback, its isolation drive plate is started working, send contactor 25 adhesive signals, major loop is connected, the direct current of 26 pairs of pulsation of filter circuit afterwards carries out filtering, make it become level and smooth, eliminate noise jamming, isolation drive plate control drive circuit two sends the driving signal of inverter circuit 27, realizes that the gate pole of inverter circuit 27 turns on and off the control of speed, finally finishes the output of power frequency three-phase alternating current.Its inner testing circuit two is finished protection and warning functions such as its overcurrent, overvoltage, overload, short circuit.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (8)
1. integrated frequency converter that is used on the gang saw mill, be connected between the input power supply and motor of gang saw mill, it is characterized in that: this integrated frequency converter comprises three-phase bridge rectifier circuit (1), charge circuit circuit (2), filter circuit one (3), inverter circuit one (4), master control borad, isolation drive plate/power panel and the alternating interface between man and computer that is connected with master control borad, described three-phase bridge rectifier circuit (1) has the input R end that is connected with the input power supply, S end and T end, described inverter circuit one (4) has the output U end that is connected with motor, V end and W end, described three-phase bridge rectifier circuit (1), charge circuit circuit (2), filter circuit one (3) and inverter circuit one (4) are electrically connected successively, and described master control borad is electrically connected with above-mentioned inverter circuit one (4) by isolation drive plate/power panel.
2. according to claim 1 a kind ofly it is characterized in that for the integrated frequency converter on the gang saw mill, described charge circuit circuit (2) is connected and forms by charging resistor and contactor one are in parallel.
3. according to claim 2 a kind of for the integrated frequency converter on the gang saw mill, it is characterized in that, described filter circuit one (3) is made of four groups of identical filter units of structure, every group of filter unit is formed in parallel by a capacitor C and resistance R, and the circuit that forms after the circuit that forms after wherein two groups of filter units are connected in series and other two groups of filter units are connected in series is arranged in parallel.
4. according to claim 2 or 3 described a kind of for the integrated frequency converter on the gang saw mill, it is characterized in that, described inverter circuit one (4) comprises the inversion unit that three groups of structures are identical and be arranged in parallel, every group of inversion unit is in series by structure identical inversion subelement one and inversion subelement two, inversion subelement one comprises transistor IGBT-1 and the diode D1 of connection parallel with one another, the negative pole of diode D1 is connected with the collector electrode of transistor IGBT-1, the positive pole of diode D1 is connected with the emitter of transistor IGBT-1, inversion subelement two comprises transistor IGBT-2 and the diode D2 of connection parallel with one another, the negative pole of diode D2 is connected with the collector electrode of transistor IGBT-2, the positive pole of diode D2 is connected with the emitter of transistor IGBT-2, the emitter of transistor IGBT-1 is connected with the collector electrode of transistor IGBT-2, the gate pole of transistor IGBT-2 is connected with above-mentioned isolation drive plate/power panel, above-mentioned output U end, V end and W end are respectively by drawing between the inversion subelement one in three groups of inversion units and the inversion subelement two.
5. according to claim 4 a kind of for the integrated frequency converter on the gang saw mill, it is characterized in that, the negative pole end DC-and the positive terminal DC+ that have dc bus on the described integrated frequency converter, two outputs of above-mentioned filter circuit one (3) are connected with two inputs of inverter circuit one (4) with positive terminal DC+ by above-mentioned negative pole end DC-respectively.
6. according to claim 5 a kind of for the integrated frequency converter on the gang saw mill, it is characterized in that, also be provided with the electric energy feedback circuit on the described integrated frequency converter, the electric energy feedback circuit comprises filter circuit two (6), inverter circuit two (7) and the isolation drive plate that is connected with above-mentioned master control borad, described filter circuit two (6) have two inputs and wherein an end be connected with the positive terminal DC+ of above-mentioned dc bus by contactor two (5), the other end is connected with the negative pole end DC-of above-mentioned dc bus, the output of filter circuit two (6) is connected with inverter circuit two (7), and described inverter circuit two (7) is connected with the isolation drive plate and draws respectively the end with above-mentioned R on it, three outputs that the S end is connected with the T end.
7. according to claim 6 a kind ofly it is characterized in that for the integrated frequency converter on the gang saw mill, three outputs of described inverter circuit two (7) are connected with reactor respectively and between above-mentioned R end, S end and the T end.
8. according to claim 7 a kind of for the integrated frequency converter on the gang saw mill, it is characterized in that, described isolation drive plate comprises drive circuit two and the testing circuit two that is connected with above-mentioned master control borad, the gate pole of the transistor IGBT-2 in every group of above-mentioned inversion unit is connected with drive circuit two, and three outputs of above-mentioned inverter circuit two (7) are connected with testing circuit two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694294 CN203056982U (en) | 2012-12-14 | 2012-12-14 | Integrated frequency converter used for gang saw machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220694294 CN203056982U (en) | 2012-12-14 | 2012-12-14 | Integrated frequency converter used for gang saw machine |
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| Publication Number | Publication Date |
|---|---|
| CN203056982U true CN203056982U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220694294 Expired - Fee Related CN203056982U (en) | 2012-12-14 | 2012-12-14 | Integrated frequency converter used for gang saw machine |
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| CN (1) | CN203056982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300274A (en) * | 2016-08-31 | 2017-01-04 | 苏州迈力电器有限公司 | Converter running protection circuit |
| CN108155849A (en) * | 2018-02-28 | 2018-06-12 | 深圳市迈凯诺电气股份有限公司 | A kind of novel vertical shaft impact crusher drive system |
-
2012
- 2012-12-14 CN CN 201220694294 patent/CN203056982U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300274A (en) * | 2016-08-31 | 2017-01-04 | 苏州迈力电器有限公司 | Converter running protection circuit |
| CN108155849A (en) * | 2018-02-28 | 2018-06-12 | 深圳市迈凯诺电气股份有限公司 | A kind of novel vertical shaft impact crusher drive system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG XINFULING ELECTRIC CO., LTD. Free format text: FORMER NAME: TAIZHOU FULING ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 317519, 2, North Ring Road, Wenling City, Zhejiang, Taizhou Patentee after: Zhejiang nouveaux riches insult electric incorporated company Address before: 317519, 2, North Ring Road, Wenling City, Zhejiang, Taizhou Patentee before: Taizhou Fuling Electrical Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20151214 |
|
| EXPY | Termination of patent right or utility model |