CN104659837A - Frequency converter activation experimental instrument - Google Patents

Frequency converter activation experimental instrument Download PDF

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Publication number
CN104659837A
CN104659837A CN201310583061.0A CN201310583061A CN104659837A CN 104659837 A CN104659837 A CN 104659837A CN 201310583061 A CN201310583061 A CN 201310583061A CN 104659837 A CN104659837 A CN 104659837A
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CN
China
Prior art keywords
plc
pcb board
resistance
relay pcb
transformer
Prior art date
Application number
CN201310583061.0A
Other languages
Chinese (zh)
Inventor
刘立庄
Original Assignee
天津施德科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 天津施德科技有限公司 filed Critical 天津施德科技有限公司
Priority to CN201310583061.0A priority Critical patent/CN104659837A/en
Publication of CN104659837A publication Critical patent/CN104659837A/en

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Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/25Pc structure of the system
    • G05B2219/25268PLD programmable logic device

Abstract

The invention provides a frequency converter activation experimental instrument, which comprises an input transformer II, a rectifier module, a touch screen for a man-machine control interface, a PLC, and a power supply module for providing power for a relay PCB, the touch screen and the PLC, wherein the touch screen and the PLC are in communication connection via 485; the power supply module is connected onto the relay PCB via a fuse and an emergency stop switch; the relay PCB is connected onto a multi-input transformer I; output of the input transformer II is connected with the rectifier module and the relay PCB; output of the rectifier module is connected with a filter capacitor and the relay PCB; the filter capacitor is connected onto output of a power resistor via an electrical appliance PCB; a remote control circuit is connected with a PLC input terminal; and output of the PLC controls the relay PCB and a sound-light alarm. The frequency converter activation experimental instrument has the advantage that safe automatic maintenance can be realized on stored or off-line frequency converters and various energy storage devices to make the devices in a good working performance state.

Description

Frequency converter activation experiment instrument

Technical field

The present invention relates to electrical application technology field, be specially frequency converter activation experiment instrument.

Background technology

The application of frequency conversion and inverter solves the speed governing problem of alternating current motor, is popularized use widely in every profession and trade, and big capacity electrolyte capacitor is the main element of main circuit of frequency converter.The frequency converter guest machine long-term storage of a lot of applying unit is at storehouse, and storage period reaches some months, even within several years, is just used to.Due to frequency conversion and inverter have big capacity electrolyte capacitor because inside is filled with a large amount of electrolyte, as for a long time need not, its inner chemical composition of electrolyte natural decomposition, electric property is caused to be deteriorated, impedance becomes large, withstand voltage reduction, and insulation leakagel volume leakage stream is large, top bump or cracking is gone out, electrolyte spilling etc. time serious.Namely big capacity electrolyte capacitor extended reduction until scrap in standby time.These a large amount of apparatuss need an automatic special equipment to maintain good working order to its maintenance.

Summary of the invention

Technical problem solved by the invention is to provide a kind of frequency converter activation experiment instrument, to solve the problem proposed in above-mentioned background technology.

Technical problem solved by the invention realizes by the following technical solutions:

Frequency converter activation experiment instrument, comprise input transformer II, rectification module, for the touch-screen at Human-machine Control interface and PLC and the power module of powering for relay pcb board, touch-screen and PLC; Described touch-screen and PLC are by 485 communication connections; Described power module is connected to relay pcb board by insurance and emergency stop switch, and relay pcb board is connected to multi input transformer I; Described input transformer II exports and is connected to rectification module and relay pcb board; Described rectification module exports and is connected to filter capacitor and relay pcb board; Described filter capacitor is connected to power resistor by electrical equipment pcb board and exports; Remote control circuit connects PLC input terminal, PLC output control relay pcb board and audible-visual annunciator.

Further, pre-charging device is provided with between described power module and relay pcb board.

Further, described pre-charging device comprises transformer T1, diode D1, resistance R1, resistance R2, electric capacity C1, electric capacity C2; The wherein L termination emergency stop switch of transformer T1, the N of transformer T1 holds ground connection, transformer T2 is in parallel with 1,3 pin of diode D1, its one end contact resistance R7, the other end is binding post, in parallel between resistance R1, resistance R2, electric capacity C1, electric capacity C2, and connect with shift knob SB4, in parallel with 2,4 pin of diode D1 again, resistance R8, R3, R4, R5 connect, and resistance R3, R4, R5 are in parallel with shift knob SB5.

Further again, 2,4 pin of described diode D1 are incorporated to voltmeter PV1.

Connect with ammeter PA1 in one end of described resistance R8.

Further again, the two ends of described ammeter PA1 and shift knob SB5 are incorporated to voltmeter PV2.

Beneficial effect

The present invention has the following advantages:

1, fail safe

1.1 power supply securities-----electric capacity activation instrument input power has isolating transformer that civil power and maintenance facility Secure isolation are opened, and on a reference potential, does not effectively protect operating personnel and by maintenance facility safety with the earth;

1.2 interface securities------instrument input and output part has overcurrent protective device.Exporting line is that the high-tension cable being greater than 2500V is connected with by maintenance facility device;

2, convenience

2.1 power supply convenience----input power is that 220V AC50HZ power frequency civil power has Anywhere and easily obtains

2.2 operation conveniences-----adopt touch-screen to control convenient setting to the with great difficulty operation of the parameter intuitive of maintenance facility, can maintain the apparatus that 220V, 380V, 690V are power supply respectively;

3, practicality

3.1 divide power section for by maintenance facility, only need input voltage and power, pass to PLC under its discharge and recharge time and cycle-index generate formulation data automatically;

3.2 are furnished with controlling remote and local control startupoptions;

Automatically after maintaining after 3.3 startups, sound photoelectricity warning prompt completes.

The present invention can make these apparatuss be in a works fine performance state to the maintenance of depositing or the frequency converter of off-line and various energy storage device device realize safety automation.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is fundamental diagram of the present invention;

Fig. 3 is pre-charging device main loop circuit figure.

Embodiment

Below in conjunction with the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment 1

As Figure 1-3, frequency converter activation experiment instrument, comprise input transformer II, rectification module, for the touch-screen at Human-machine Control interface and PLC and the power module of powering for relay pcb board, touch-screen and PLC; Described touch-screen and PLC are by 485 communication connections; Described power module is connected to relay pcb board by insurance and emergency stop switch, and relay pcb board is connected to multi input transformer I; Described input transformer II exports and is connected to rectification module and relay pcb board; Described rectification module exports and is connected to filter capacitor and relay pcb board; Described filter capacitor is connected to power resistor by electrical equipment pcb board and exports; Remote control circuit connects PLC input terminal, PLC output control relay pcb board and audible-visual annunciator.

Further, pre-charging device is provided with between described power module and relay pcb board.

Further, described pre-charging device comprises transformer T1, diode D1, resistance R1, resistance R2, electric capacity C1, electric capacity C2; The wherein L termination emergency stop switch of transformer T1, the N of transformer T1 holds ground connection, transformer T2 is in parallel with 1,3 pin of diode D1, its one end contact resistance R7, the other end is binding post, in parallel between resistance R1, resistance R2, electric capacity C1, electric capacity C2, and connect with shift knob SB4, in parallel with 2,4 pin of diode D1 again, resistance R8, R3, R4, R5 connect, and resistance R3, R4, R5 are in parallel with shift knob SB5.

Further again, 2,4 pin of described diode D1 are incorporated to voltmeter PV1.

Connect with ammeter PA1 in one end of described resistance R8.

Further again, the two ends of described ammeter PA1 and shift knob SB5 are incorporated to voltmeter PV2.

Operation principle of the present invention: circuit is set by touch-screen and connects configuration configuration and discharge and recharge configuration parameter.Set starting device, the program engage relay pcb board that equipment sets according to PLC inside, the primary winding voltage of multi input transformer 1 is switched by relay pcb board, can for determining that supply voltage is 220V 380V 690V, the interchange that multi input transformer 2 exports by relay pcb board to exchanging output interface and filter capacitor.The direct current that filter capacitor exports switches connection current-limiting resistance to DC output terminal by relay pcb board, and relay pcb board is by PLC program control discharge and recharge time and number of times.When after all program finishes execution, sound and light alarm is informed.Maintain powerful device and high voltage installation time remote control can Long-distance Control start and stopping avoid personal contact's safety problem.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.

In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.

Claims (5)

1. frequency converter activation experiment instrument, comprise input transformer II, rectification module, for the touch-screen at Human-machine Control interface and PLC and the power module of powering for relay pcb board, touch-screen and PLC; It is characterized in that, described touch-screen and PLC are by 485 communication connections; Described power module is connected to relay pcb board by insurance and emergency stop switch, and relay pcb board is connected to multi input transformer I; Described input transformer II exports and is connected to rectification module and relay pcb board; Described rectification module exports and is connected to filter capacitor and relay pcb board; Described filter capacitor is connected to power resistor by electrical equipment pcb board and exports; Remote control circuit connects PLC input terminal, PLC output control relay pcb board and audible-visual annunciator.
2. frequency converter activation experiment instrument according to claim 1, it is characterized in that, be provided with pre-charging device between described power module and relay pcb board, described pre-charging device comprises transformer T1, diode D1, resistance R1, resistance R2, electric capacity C1, electric capacity C2; The wherein L termination emergency stop switch of transformer T1, the N of transformer T1 holds ground connection, transformer T2 is in parallel with 1,3 pin of diode D1, its one end contact resistance R7, the other end is binding post, in parallel between resistance R1, resistance R2, electric capacity C1, electric capacity C2, and connect with shift knob SB4, in parallel with 2,4 pin of diode D1 again, resistance R8, R3, R4, R5 connect, and resistance R3, R4, R5 are in parallel with shift knob SB5.
3. pre-charging device according to claim 2, is characterized in that, 2,4 pin of described diode D1 are incorporated to voltmeter PV1.
4. pre-charging device according to claim 2, is characterized in that, connects with ammeter PA1 in one end of described resistance R8.
5. pre-charging device according to claim 2, is characterized in that, the two ends of described ammeter PA1 and shift knob SB5 are incorporated to voltmeter PV2.
CN201310583061.0A 2013-11-18 2013-11-18 Frequency converter activation experimental instrument CN104659837A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310583061.0A CN104659837A (en) 2013-11-18 2013-11-18 Frequency converter activation experimental instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310583061.0A CN104659837A (en) 2013-11-18 2013-11-18 Frequency converter activation experimental instrument

Publications (1)

Publication Number Publication Date
CN104659837A true CN104659837A (en) 2015-05-27

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1263369A (en) * 2000-03-03 2000-08-16 清华大学 Full-wave/half-wave automatic repeat frequency charging and discharging circuit
US20060176027A1 (en) * 2005-02-04 2006-08-10 Abb Oy Charging arrangement for capacitor means
CN101013855A (en) * 2006-12-13 2007-08-08 上海新时达电气有限公司 Precharging circuit for converter
CN2935619Y (en) * 2006-04-25 2007-08-15 深圳市中传电气技术有限公司 Precharging circuit protection device of intelligent middle, high-voltage large power frequency converter
CN102130616A (en) * 2011-03-28 2011-07-20 株洲南车时代电气股份有限公司 Device and method for controlling precharge on frequency converter
CN202041590U (en) * 2010-12-31 2011-11-16 珠海格力新元电子有限公司 Capacitor charge and discharge tester
CN203180767U (en) * 2013-04-18 2013-09-04 上海赛德造纸机械电控技术有限公司 PLC-based control device for frequency-converter precharge circuit
CN203289169U (en) * 2013-06-17 2013-11-13 上海亿思特电气股份有限公司 Pre-charging device of power unit cascaded high-voltage inverter
CN203289315U (en) * 2013-06-05 2013-11-13 中国石油大学(华东) Novel frequency converter precharge circuit control system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1263369A (en) * 2000-03-03 2000-08-16 清华大学 Full-wave/half-wave automatic repeat frequency charging and discharging circuit
US20060176027A1 (en) * 2005-02-04 2006-08-10 Abb Oy Charging arrangement for capacitor means
CN2935619Y (en) * 2006-04-25 2007-08-15 深圳市中传电气技术有限公司 Precharging circuit protection device of intelligent middle, high-voltage large power frequency converter
CN101013855A (en) * 2006-12-13 2007-08-08 上海新时达电气有限公司 Precharging circuit for converter
CN202041590U (en) * 2010-12-31 2011-11-16 珠海格力新元电子有限公司 Capacitor charge and discharge tester
CN102130616A (en) * 2011-03-28 2011-07-20 株洲南车时代电气股份有限公司 Device and method for controlling precharge on frequency converter
CN203180767U (en) * 2013-04-18 2013-09-04 上海赛德造纸机械电控技术有限公司 PLC-based control device for frequency-converter precharge circuit
CN203289315U (en) * 2013-06-05 2013-11-13 中国石油大学(华东) Novel frequency converter precharge circuit control system
CN203289169U (en) * 2013-06-17 2013-11-13 上海亿思特电气股份有限公司 Pre-charging device of power unit cascaded high-voltage inverter

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