CN203299599U - Multifunctional programmable test power supply - Google Patents
Multifunctional programmable test power supply Download PDFInfo
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- CN203299599U CN203299599U CN2013202462294U CN201320246229U CN203299599U CN 203299599 U CN203299599 U CN 203299599U CN 2013202462294 U CN2013202462294 U CN 2013202462294U CN 201320246229 U CN201320246229 U CN 201320246229U CN 203299599 U CN203299599 U CN 203299599U
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Abstract
A multifunctional programmable test power supply comprises an input unit, a programmable controller PLC, a D/A converting circuit, a controllable AC power unit, a controllable dc power unit, a controllable rectified power unit and a function switching contactor, wherein the input unit is connected with the programmable controller PLC, the output end of the D/A converting circuit is connected with the digital information output end of the programmable controller PLC, the input end of the D/A converting circuit is connected with the controllable AC power unit, the controllable dc power unit and the controllable rectified power unit, the output ends of the power units are connected with the function switching contactor, the control signal input end of the function switching contactor is connected with the output end of the switch control signal output end of the programmable controller PLC, and the function switching contactor receives the switch control signal of the programmable controller PLC and selects corresponding output for the multifunctional programmable test power supply. The multifunctional programmable test power supply integrated a plurality of programmable power supplies, allows programming in PLC and can select AC, DC or rectified programmable power for output.
Description
Technical field
The utility model relates to the programmable power supply field, relates in particular to a kind of Programmable Multifunction experiment power supply.
Background technology
Quality testing department can be used various experiment power supplies in the electric equipment products checkout procedure, comprises interchange, direct current and rectifier power source, also can use programmable power supply.At present, known programmable power supply is all the power supply of simple function, as exchange program-controlled frequency-changing power supply, program-control DC power, and there is no AC/DC or have the programmable power supply of rectifier power source function concurrently, more do not have alternating current-direct current can be superimposed on the programmable power supply of same load simultaneously.
But in practical application, can often run in product standard to have and need under multiple power sources, carry out the requirement of product examination, and require to carry out transformation, frequency conversion, break-make, loop cycle etc. under the sequential of regulation, the requirement of pair rectifier power source ripple accounting and alternating current-direct current stack test is also arranged.And the unicity of current programmable power supply function forces testing laboratory will prepare the power supply of multiple difference in functionality, even like this, current rectifier power source does not have the ripple accounting to adjust function yet, and programmable power supply can not be superimposed on same load by alternating current-direct current simultaneously.Therefore, the exploitation of Programmable Multifunction experiment power supply is that production and quality inspection are required, has good market outlook.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Programmable Multifunction experiment power supply is provided.
The utility model realizes that the technical scheme that its goal of the invention takes is as follows: a kind of Programmable Multifunction experiment power supply, it is characterized in that, comprise input block, Programmable Logic Controller PLC, the D/A change-over circuit, controlled AC power unit, the controllable direct current power supply unit, controlled rectification power supply unit and function switching contactor, described input block is connected with Programmable Logic Controller PLC, the input end of D/A change-over circuit is connected with the numerical information output terminal of Programmable Logic Controller PLC, the output terminal of D/A change-over circuit and described controlled AC power unit, the controllable direct current power supply unit, the controlled rectification power supply unit is connected, the D/A change-over circuit outputs to respectively each power supply unit after converting the numerical information of Programmable Logic Controller PLC output to corresponding simulating signal, the output terminal of each power supply unit is connected with described function switching contactor, the control signal input end of described function switching contactor is connected with the switch controlling signal output terminal of described Programmable Logic Controller PLC, the switch controlling signal that described function switching contactor receives Programmable Logic Controller PLC is that described Programmable Multifunction experiment power supply is selected corresponding output.
The utility model can be programmed in PLC by input block according to user's request, selects interchange, direct current, the output of rectification programmable power supply.
As embodiment of the present utility model, described input block is touch-screen.
Described D/A change-over circuit by four independently the D/A converting unit form, be respectively alternating voltage D/A converting unit, a-c cycle D/A converting unit, DC voltage D/A converting unit, commutating voltage D/A converting unit, the input end of described alternating voltage D/A converting unit is connected with the alternating voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described alternating voltage D/A converting unit is connected with the voltage controling end of described controlled AC power unit; The input end of described a-c cycle D/A converting unit is connected with the a-c cycle numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described a-c cycle D/A converting unit is connected with the frequency control terminal of described controlled AC power unit; The input end of described DC voltage D/A converting unit is connected with the DC voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described DC voltage D/A converting unit is connected with the voltage controling end of described controllable direct current power supply unit; The input end of described commutating voltage D/A converting unit is connected with the commutating voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described commutating voltage D/A converting unit is connected with the voltage controling end of described controlled rectification power supply unit.
As improvement of the present utility model, the utility model also comprises the alternating current-direct current supercircuit, one group of input end of described alternating current-direct current supercircuit is connected with the output terminal of described controlled AC power unit, another group input end is connected with the output terminal of described controllable direct current power supply unit, and the output terminal of described alternating current-direct current supercircuit is connected with described function switching contactor.
As a kind of embodiment of the present utility model, described alternating current-direct current supercircuit comprise capacitor C 0 ', C1 ', C2 ', inductance L, diode D and current-limiting resistance R, one end of described controlled AC power unit is by capacitor C 0 ' be connected with the negative terminal of diode D, the other end is by capacitor C 1 ' be connected with an end of inductance L, the other end of inductance L is connected with resistance R, capacitor C 2 ' one be terminated at capacitor C 0 ' and the line of diode D negative terminal between, capacitor C 2 ' the other end be connected between the line of inductance L and current-limiting resistance R, the anode of diode D is connected with the positive pole of described controllable direct current power supply unit, the negative pole of described controllable direct current power supply unit is connected with the other end of current-limiting resistance R, two output terminals of described alternating current-direct current supercircuit be located at respectively capacitor C 0 ' and the line of diode D negative terminal between and capacitor C 1 ' and the line of inductance L between.
As further improvement of the utility model, described controlled rectification power supply unit comprises controlled rectification circuit and ripple accounting Circuit tuning, described ripple accounting Circuit tuning comprises positive and negative input end and positive and negative output terminal, and be connected in parallel on the input and output terminal between parallel circuit, described parallel circuit is comprised of a contactor normally opened contact and a capacitor that is series at this contact the n road series arm ，Mei road series arm that is formed in parallel; The positive input of described ripple accounting Circuit tuning, output terminal are connected with normally opened contact one end of described contactor; The control end of described contactor connects the switch controlling signal output terminal of described Programmable Logic Controller PLC.
The utlity model has following beneficial effect: 1) the utility model integrates multiple programmable power supply function, can in PLC, programme according to user's request, selects interchange, direct current, the output of rectification programmable power supply;
2) D/A change-over circuit of the present utility model by four independently the D/A converting unit form, and the alternating current-direct current supercircuit is set, can realize that alternating current voltage frequency changes the function that simultaneously is superimposed on same load with combined-voltage simultaneously;
3) controlled rectification power supply of the present utility model unit comprises ripple accounting Circuit tuning, makes rectifier power source of the present utility model unit also have the ripple accounting and adjusts function.
The accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model preferred embodiment;
Fig. 2 is the connection diagram of the D/A change-over circuit of the utility model preferred embodiment;
Fig. 3 is the circuit theory diagrams of the alternating current-direct current supercircuit of the utility model preferred embodiment;
Fig. 4 is the circuit theory diagrams of the controlled rectification power supply unit of the utility model preferred embodiment.
Embodiment
The Programmable Multifunction experiment power supply of the utility model specific embodiment comprises input block, Programmable Logic Controller PLC, D/A change-over circuit, controlled AC power unit, controllable direct current power supply unit, controlled rectification power supply unit, alternating current-direct current supercircuit and function switching contactor.In the present embodiment, input block is selected touch-screen.As shown in Figure 1, touch-screen is connected with Programmable Logic Controller PLC, the input end of D/A change-over circuit is connected with the numerical information output terminal of Programmable Logic Controller PLC, the output terminal of D/A change-over circuit and controlled AC power unit, the controllable direct current power supply unit is connected with the controlled rectification power supply unit, the output terminal of each power supply unit is connected with the function switching contactor, simultaneously, the output terminal of controlled AC power unit and controllable direct current power supply unit also is connected with the alternating current-direct current supercircuit, realize the alternating current-direct current stack of programmable power supply by the alternating current-direct current supercircuit, the output terminal of alternating current-direct current supercircuit also is connected with the function switching contactor.The switch controlling signal output terminal of Programmable Logic Controller PLC is connected with described controlled rectification power supply unit with the control signal input end of described function switching contactor.The output terminal of function switching contactor is connected with load FZ, and the switch controlling signal that the function switching contactor receives Programmable Logic Controller PLC is that described Programmable Multifunction experiment power supply is selected corresponding output.
Write on request test routine by artificial touch on touch-screen, this program produces pending numerical information and switch controlling signal by PLC, wherein numerical information becomes 1V ~ 5V analog voltage signal by the D/A change-over circuit, so that controlled interchange to be set, direct current or rectifier power source unit, make it to meet the requirements of value, then the switch controlling signal produced by PLC is controlled the function switching contactor, thereby realize alternating voltage and frequency, DC voltage requires to change chronologically, commutating voltage ripple accounting changes on request, combined-voltage is superimposed on same load simultaneously, and make tested load by the preset trial time, test period, cycle index is moved.
As shown in Figure 2, the D/A change-over circuit by four independently the D/A converting unit form, be respectively alternating voltage D/A converting unit a, a-c cycle D/A converting unit b, DC voltage D/A converting unit c, commutating voltage D/A converting unit d
;the input end 1 of alternating voltage D/A converting unit a is connected with the alternating voltage numerical information output terminal of Programmable Logic Controller PLC; The output terminal 5 of alternating voltage D/A converting unit a is connected with the voltage controling end ACv of controlled AC power unit; The input end 2 of a-c cycle D/A converting unit b is connected with the a-c cycle numerical information output terminal of Programmable Logic Controller PLC, and the output terminal 6 of a-c cycle D/A converting unit b is connected with the frequency control terminal ACf of controlled AC power unit; The input end 3 of DC voltage D/A converting unit c is connected with the DC voltage numerical information output terminal of Programmable Logic Controller PLC, and the output terminal 7 of DC voltage D/A converting unit c is connected with the voltage controling end DCv of controllable direct current power supply unit; The input end 4 of commutating voltage D/A converting unit d is connected with the commutating voltage numerical information output terminal of Programmable Logic Controller PLC, and the output terminal 8 of commutating voltage D/A converting unit d is connected with the voltage controling end ZLv of controlled rectification power supply unit.The numerical information output terminal of Programmable Logic Controller PLC is write fashionable appointment in program.
As shown in Figure 3, the alternating current-direct current supercircuit comprise capacitor C 0 ', C1 ', C2 ', inductance L, diode D and current-limiting resistance R, one end of controlled AC power unit (AC power supplies) is by capacitor C 0 ' be connected with the negative terminal of diode D, the other end is by capacitor C 1 ' be connected with an end of inductance L, the other end of inductance L is connected with resistance R, capacitor C 2 ' one be terminated at capacitor C 0 ' and the line of diode D negative terminal between, capacitor C 2 ' the other end be connected between the line of inductance L and current-limiting resistance R, the anode of diode D is connected with the positive pole of controllable direct current power supply unit (DC power supply), the negative pole of controllable direct current power supply unit is connected with the other end of current-limiting resistance R, two output terminals of alternating current-direct current supercircuit be located at respectively capacitor C 0 ' and the line of diode D negative terminal between and capacitor C 1 ' and the line of inductance L between, load FZ is connected between two output terminals of alternating current-direct current supercircuit.
Capacitor C 0 ', C1 ', C2 ' they are non-polar electric capacity, capacity can be determined according to load; It is to avoid impact and the interference of AC power on direct supply that the inductance L purpose is set, and its inductance value should make AC power as far as possible little on the impact of direct supply, but the DC current that can not hinder requirement is by being as the criterion.
As shown in Figure 4, the controlled rectification power supply unit comprises controlled rectification circuit and ripple accounting Circuit tuning.In this figure, simply with transformer and rectifier bridge, mean the basic circuit of existing controlled rectification circuit.Ripple accounting Circuit tuning comprises positive and negative input end and positive and negative output terminal, and is connected in parallel on the parallel circuit between input and output terminal.Parallel circuit is comprised of a contactor normally opened contact and a capacitor that is series at this contact the n road series arm ，Mei road series arm that is formed in parallel.As shown in Figure 4, cathode rectifier and contactor S0, S1, S2 ... Sn normally opened contact one end is connected, negative pole and capacitor C0, C1, C2 ... Cn mono-end is connected, the control end of contactor S0 ~ Sn is connected with the switch controlling signal output terminal of Programmable Logic Controller PLC, Programmable Logic Controller PLC controls the quantity of the series arm of access parallel circuit, thereby adjusts the ripple accounting of the output voltage of controlled rectification power supply unit.The ripple accounting of the output voltage of the quantity of the series arm of place in circuit and the controlled rectification power supply unit relation that is inversely proportional to, closed contactor is more, and the ripple accounting is less.
Capacitors count in Fig. 4 is determined by load capacity scope and ripple accounting adjustment precision, usually can in 5 ~ 10 scopes, select.The ripple accounting of rectifier power source detects, and can before test, carry out by oscillograph, then by correlation parameter manually is set; Also can increase special testing circuit realizes automatically measuring.
Claims (6)
1. a Programmable Multifunction experiment power supply, it is characterized in that, comprise input block, Programmable Logic Controller PLC, the D/A change-over circuit, controlled AC power unit, the controllable direct current power supply unit, controlled rectification power supply unit and function switching contactor, described input block is connected with Programmable Logic Controller PLC, the input end of D/A change-over circuit is connected with the numerical information output terminal of Programmable Logic Controller PLC, the output terminal of D/A change-over circuit and described controlled AC power unit, the controllable direct current power supply unit, the controlled rectification power supply unit is connected, the D/A change-over circuit outputs to respectively each power supply unit after converting the numerical information of Programmable Logic Controller PLC output to corresponding simulating signal, the output terminal of each power supply unit is connected with described function switching contactor, the control signal input end of described function switching contactor is connected with the switch controlling signal output terminal of described Programmable Logic Controller PLC, the switch controlling signal that described function switching contactor receives Programmable Logic Controller PLC is that described Programmable Multifunction experiment power supply is selected corresponding output.
2. Programmable Multifunction experiment power supply according to claim 1, is characterized in that, described input block is touch-screen.
3. Programmable Multifunction experiment power supply according to claim 1, it is characterized in that, described D/A change-over circuit by four independently the D/A converting unit form, be respectively alternating voltage D/A converting unit, a-c cycle D/A converting unit, DC voltage D/A converting unit, commutating voltage D/A converting unit, the input end of described alternating voltage D/A converting unit is connected with the alternating voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described alternating voltage D/A converting unit is connected with the voltage controling end of described controlled AC power unit; The input end of described a-c cycle D/A converting unit is connected with the a-c cycle numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described a-c cycle D/A converting unit is connected with the frequency control terminal of described controlled AC power unit; The input end of described DC voltage D/A converting unit is connected with the DC voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described DC voltage D/A converting unit is connected with the voltage controling end of described controllable direct current power supply unit; The input end of described commutating voltage D/A converting unit is connected with the commutating voltage numerical information output terminal of described Programmable Logic Controller PLC, and the output terminal of described commutating voltage D/A converting unit is connected with the voltage controling end of described controlled rectification power supply unit.
4. Programmable Multifunction experiment power supply according to claim 3, it is characterized in that, described Programmable Multifunction experiment power supply also comprises the alternating current-direct current supercircuit, one group of input end of described alternating current-direct current supercircuit is connected with the output terminal of described controlled AC power unit, another group input end is connected with the output terminal of described controllable direct current power supply unit, and the output terminal of described alternating current-direct current supercircuit is connected with described function switching contactor.
5. Programmable Multifunction experiment power supply according to claim 4, it is characterized in that, described alternating current-direct current supercircuit comprise capacitor C 0 ', C1 ', C2 ', inductance L, diode D and current-limiting resistance R, one end of described controlled AC power unit is by capacitor C 0 ' be connected with the negative terminal of diode D, the other end is by capacitor C 1 ' be connected with an end of inductance L, the other end of inductance L is connected with resistance R, capacitor C 2 ' one be terminated at capacitor C 0 ' and the line of diode D negative terminal between, capacitor C 2 ' the other end be connected between the line of inductance L and current-limiting resistance R, the anode of diode D is connected with the positive pole of described controllable direct current power supply unit, the negative pole of described controllable direct current power supply unit is connected with the other end of current-limiting resistance R, two output terminals of described alternating current-direct current supercircuit be located at respectively capacitor C 0 ' and the line of diode D negative terminal between and capacitor C 1 ' and the line of inductance L between.
6. according to the described Programmable Multifunction experiment power supply of claim 3 ~ 5 any one, it is characterized in that, described controlled rectification power supply unit comprises controlled rectification circuit and ripple accounting Circuit tuning, described ripple accounting Circuit tuning comprises positive and negative input end and positive and negative output terminal, and be connected in parallel on the input and output terminal between parallel circuit, described parallel circuit is comprised of a contactor normally opened contact and a capacitor that is series at this contact the n road series arm ，Mei road series arm that is formed in parallel; The positive input of described ripple accounting Circuit tuning, output terminal are connected with normally opened contact one end of described contactor; The control end of described contactor connects the switch controlling signal output terminal of described Programmable Logic Controller PLC.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880632A (en) * | 2015-05-28 | 2015-09-02 | 上海沪工汽车电器有限公司 | High speed power supply system for vehicle electric appliance test |
| CN109581017A (en) * | 2018-11-28 | 2019-04-05 | 北京宏动科技有限公司 | Multifunction digital transient response tester |
| CN111574004A (en) * | 2020-05-19 | 2020-08-25 | 哈工大机电工程(嘉善)研究院 | Comprehensive experimental device for reduction of oily sludge |
| CN113049980A (en) * | 2019-07-30 | 2021-06-29 | 深圳市泛海三江电子股份有限公司 | Test method for testing load voltage stability of fire power supply |
| CN113437854A (en) * | 2021-07-12 | 2021-09-24 | 国网河北省电力有限公司营销服务中心 | AC/DC superposed voltage source |
-
2013
- 2013-05-09 CN CN2013202462294U patent/CN203299599U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880632A (en) * | 2015-05-28 | 2015-09-02 | 上海沪工汽车电器有限公司 | High speed power supply system for vehicle electric appliance test |
| CN104880632B (en) * | 2015-05-28 | 2018-07-24 | 上海沪工汽车电器有限公司 | A kind of high-speed power system for car electrics experiment |
| CN109581017A (en) * | 2018-11-28 | 2019-04-05 | 北京宏动科技有限公司 | Multifunction digital transient response tester |
| CN109581017B (en) * | 2018-11-28 | 2021-06-29 | 北京宏动科技有限公司 | Multifunctional digital transient response tester |
| CN113049980A (en) * | 2019-07-30 | 2021-06-29 | 深圳市泛海三江电子股份有限公司 | Test method for testing load voltage stability of fire power supply |
| CN113049980B (en) * | 2019-07-30 | 2024-05-31 | 深圳市高新投三江电子股份有限公司 | Automatic testing method for fire-fighting power supply |
| CN111574004A (en) * | 2020-05-19 | 2020-08-25 | 哈工大机电工程(嘉善)研究院 | Comprehensive experimental device for reduction of oily sludge |
| CN113437854A (en) * | 2021-07-12 | 2021-09-24 | 国网河北省电力有限公司营销服务中心 | AC/DC superposed voltage source |
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Assignee: Jiangsu Weinuo Testing Technology Co.,Ltd. Assignor: VKAN CERTIFICATION AND TESTING Co.,Ltd. Contract record no.: X2019440000001 Denomination of utility model: Multifunctional programmable test power supply Granted publication date: 20131120 License type: Common License Record date: 20190805 |
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| CX01 | Expiry of patent term |
Granted publication date: 20131120 |