CN201203974Y - Electric force electronic technology experimental device - Google Patents
Electric force electronic technology experimental device Download PDFInfo
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- CN201203974Y CN201203974Y CNU2008200885715U CN200820088571U CN201203974Y CN 201203974 Y CN201203974 Y CN 201203974Y CN U2008200885715 U CNU2008200885715 U CN U2008200885715U CN 200820088571 U CN200820088571 U CN 200820088571U CN 201203974 Y CN201203974 Y CN 201203974Y
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Abstract
The utility model relates to a power electronic technique experiment device, comprising a single phase bridge type semi-control rectifying circuit, a single phase bridge full-control rectifying circuit, a BUCK voltage reducing circuit and a BOOST voltage boost circuit. The single phase bridge type semi-control rectifying circuit comprises a main switch control signal generating unit, a driving unit, and a single phase bridge type semi-control main unit sequentially connected, wherein the single phase bridge type semi-control main unit comprises four diodes, two field effect transistors and a load resistor. The single phase bridge type full-control rectifying circuit comprises a main switch control signal generating unit, a driving unit, and a single phase bridge type main unit sequentially connected, wherein the single phase bridge type main unit comprises four diodes, four field effect transistors and a load resistor. Using the field effect transistor of the utility model to substitute thyristor in power electronic text book, not only the same experiment result can be obtained, but also experiment circuit is simplified, and cost is lowered. The utility model has multiple functions of verifying four types of circuit, which is also convenient in use.
Description
Technical field
The utility model belongs to school experimental provision field, relates in particular to a kind of Power Electronic Technique experimental provision of verifying the waveform characteristic of rectification circuit and DC transfer circuit.
Background technology
Most of main circuit that traditional Power Electronic Technique is taught in the book all adopts thyristor to verify the waveform characteristic of rectification circuit and DC transfer circuit as main switch, but because thyristor belongs to current driving apparatus, its driving circuit complexity, and thyristor circuit also must be provided with breaking circuit and realizes turn-offing, therefore corresponding experimental provision circuit complexity, cost is higher, and the lead time is also longer.
Summary of the invention
The utility model mainly solves the experimental provision circuit complexity that adopts thyristor to verify the waveform characteristic of rectification circuit and DC transfer circuit as main switch, and cost is higher, the technical matters that the lead time is also long; Provide a kind of main switch not adopt thyristor, thereby simplify the experimental provision circuit, reduce cost, shorten the lead time, can guarantee the Power Electronic Technique experimental provision that experimental result and the experimental result that adopts thyristor are consistent simultaneously again.
The utility model solves traditional experimental provision function singleness simultaneously, generally can only verify a kind of technical matters of circuit; Provide a kind of and can verify multiple circuit, diverse in function, Power Electronic Technique experimental provision easy to use.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the utility model comprises single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, BUCK reduction voltage circuit and BOOST booster circuit; Described single phase full bridge semi controlled rectifier comprises main switch control signal generating unit, driver element, the single-phase bridge half control master unit that links to each other successively and is the power conversion unit of whole single phase full bridge semi controlled rectifier power supply that described single-phase bridge half control master unit is made of four diodes, two field effect transistor and a pull-up resistor; Described single phase full bridge controlled rectifier comprises that the main switch control signal generating unit, driver element, the single-phase bridge that link to each other are successively controlled master unit entirely and is the power conversion unit of whole single phase full bridge controlled rectifier power supply that described single-phase bridge is controlled master unit entirely and is made of four diodes, four field effect transistor and a pull-up resistor.This experimental provision integrates single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, BUCK reduction voltage circuit and BOOST booster circuit, but four kinds of circuit of simultaneous verification, and function is not single, and is easy to use.Replace teach thyristor in the book of Power Electronic Technique by field effect transistor, be equipped with simultaneously and connect main switch control signal generating unit, driver element, make from pull-up resistor, can obtain with the book of teaching identical waveform when adopting thyristor, the driving circuit of field effect transistor is simple, the driving power that needs is less, and switching speed is fast, frequency of operation is high, thereby simplifies the experimental provision circuit, reduce cost, also shortened the Experimental Device cycle.
As preferably, main switch control signal generating unit in described single phase full bridge semi controlled rectifier, the single phase full bridge controlled rectifier include comparer, with the door and the RC conditioned circuit, the output of comparer had both connect the resistance pin of RC conditioned circuit, connect a input end again with door, the tie point of adjustable resistance and electric capacity with link to each other with another input end of door, with the input end of the described driver element of output termination of door.Input signal through comparer and with door, amplify opening or turn-offing of the drive signal control field effect transistor that just can be used as field effect transistor through the isolation of over-drive unit again.Regulate the adjustable resistance of RC conditioned circuit, promptly regulate the RC constant, be equivalent to regulate the trigger angle in the thyristor circuit.Further guarantee to obtain with the book of teaching in identical experimental result when adopting thyristor.
As preferably, the main switch control signal generation circuit that the main switch control signal generating unit of described single phase full bridge semi controlled rectifier comprises two route comparers, RC conditioned circuit, connects and composes with door, the driver element of described single phase full bridge semi controlled rectifier comprises two chip for driving, the output of two-way main switch control signal generation circuit connects the input pin of two chip for driving respectively, and the output pin of two chip for driving links to each other with the grid of two field effect transistor in the described single-phase bridge half control master unit respectively.
As preferably, the main switch control signal generation circuit that the main switch control signal generating unit of described single phase full bridge controlled rectifier comprises two route comparers, RC conditioned circuit, connects and composes with door, the driver element of described single phase full bridge controlled rectifier comprises four chip for driving, the output of two-way main switch control signal generation circuit connects the input pin of four chip for driving respectively, and the output pin of four chip for driving links to each other with the grid that described single-phase bridge is controlled four field effect transistor in the master unit entirely respectively.
As preferably, described BUCK reduction voltage circuit comprises that the BUCK reduction voltage circuit comprises the AC transformation unit, rectification filtering unit, the BUCK master unit, driver element, PWM waveform generating unit, described BUCK master unit is by field effect transistor, diode, inductance, electric capacity and pull-up resistor constitute, the input of rectification filtering unit connects the output of AC transformation unit, the output of rectification filtering unit connects the drain electrode of field effect transistor, the source electrode of field effect transistor and the negative pole of diode, one end of inductance links to each other, be connected electric capacity and pull-up resistor between the other end of inductance and the ground, the plus earth of diode, the output of described PWM waveform generating unit connects the input of driver element, and the output of driver element links to each other with the grid of field effect transistor.For the relation of research input voltage and output voltage in experimentation, do not introduce traditional feedback circuit in the circuit, input voltage is a fixed voltage that obtains through AC transformation, rectifying and wave-filtering.Regulate PWM waveform generating unit, can change the dutycycle of output waveform, thereby can obtain respective output voltages.
As preferably, described BOOST booster circuit comprises AC transformation unit, rectification filtering unit, BOOST master unit, driver element, PWM waveform generating unit, described BOOST master unit is made of field effect transistor, diode, inductance, electric capacity and pull-up resistor, the input of rectification filtering unit connects the output of AC transformation unit, the output of rectification filtering unit connects an end of inductance, the other end of inductance links to each other with the drain electrode of the positive pole of diode, field effect transistor, be connected electric capacity and pull-up resistor, the source ground of field effect transistor between the negative pole of diode and the ground; The output of described PWM waveform generating unit connects the input of driver element, and the output of driver element links to each other with the grid of field effect transistor.For the relation of research input voltage and output voltage in experimentation, do not introduce traditional feedback circuit in the circuit, input voltage is a fixed voltage that obtains through AC transformation, rectifying and wave-filtering.Regulate PWM waveform generating unit, can change the dutycycle of output waveform, thereby can obtain respective output voltages.
The beneficial effects of the utility model are: integrate single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, BUCK reduction voltage circuit and BOOST booster circuit, but four kinds of circuit of simultaneous verification, diverse in function, experiment is convenient.In single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, replace teach thyristor in the book of Power Electronic Technique by field effect transistor, the main switch control signal generating unit of AC signal simultaneously by connecting and composing by comparer, with door and RC conditioned circuit, go to drive field effect transistor through driver element again, make from pull-up resistor, can obtain with the book of teaching identical waveform when adopting thyristor, thereby simplify the experimental provision circuit, reduce cost, also shortened the Experimental Device cycle.
Description of drawings
Fig. 1 is that a kind of circuit of the present utility model connects block diagram.
Fig. 2 is a kind of circuit theory diagrams of single phase full bridge semi controlled rectifier in the utility model.
Fig. 3 is a kind of circuit theory diagrams of single phase full bridge controlled rectifier in the utility model.
Fig. 4 is a kind of circuit connection diagram of BUCK reduction voltage circuit in the utility model.
Fig. 5 is a kind of circuit connection diagram of BOOST booster circuit in the utility model.
1. single phase full bridge semi controlled rectifiers among the figure, 11. main switch control signal generating unit, 12. driver elements, 13. single-phase bridge half control master unit, 14. power conversion units, 2. single phase full bridge controlled rectifier, 21. main switch control signal generating unit, 22. driver element, 23. single-phase bridges are controlled master unit entirely, 24. power conversion units, 3.BUCK reduction voltage circuit, 31. the AC transformation unit, 32. rectification filtering units, 33.BUCK master unit, 34. driver element, 35.PWM the waveform generating unit, 4.BOOST booster circuit, 41. AC transformation unit, 42. rectification filtering unit, 43.BOOST master unit, 44. driver elements, 45.PWM waveform generating unit.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: the Power Electronic Technique experimental provision of present embodiment as shown in Figure 1, comprises single phase full bridge semi controlled rectifier 1, single phase full bridge controlled rectifier 2, BUCK reduction voltage circuit 3 and 4 four kinds of experimental circuits of BOOST booster circuit.
Single phase full bridge semi controlled rectifier 1 comprises main switch control signal generating unit 11, driver element 12, the single-phase bridge half control master unit 13 that links to each other successively and is the power conversion unit 14 of whole single phase full bridge semi controlled rectifier power supply.As shown in Figure 2, the main switch control signal generation circuit that main switch control signal generating unit 11 comprises two route comparers, RC conditioned circuit, connects and composes with door, driver element 12 is made of two chip for driving U8, U9, and single-phase bridge half control master unit 13 is made of four diode D35, D36, D37, D38, two field effect transistor Q4, Q5 and a pull-up resistor RL1.The output of comparer U6A had both connect the pin of the adjustable resistance R18 of RC conditioned circuit in one road main switch control signal generation circuit, connect a input end again with door U7A, the tie point of adjustable resistance R18 and capacitor C 24 with link to each other with another input end of door U7A, with the input pin of the output termination chip for driving U8 of door U7A, the output pin of U8 links to each other with the grid of field effect transistor Q4.Another road main switch control signal generation circuit connects similar, no longer stating more, and with the input pin of the output termination chip for driving U9 of door U7B, the output pin of U9 links to each other with the grid of field effect transistor Q5.During experiment, AC signal after the transformation is flowed to two comparers, regulate adjustable resistance R18, the R19 of RC conditioned circuit, be equivalent to regulate the trigger angle of thyristor circuit the inside, just can obtain the half control rectified waveform on pull-up resistor RL1, this waveform and the Power Electronic Technique resulting waveform of teaching when adopting the rectification of thyristor half control in the book is identical.
Single phase full bridge controlled rectifier 2 comprises that the main switch control signal generating unit 21, driver element 22, the single-phase bridge that link to each other are successively controlled master unit 23 entirely and is the power conversion unit 24 of whole single phase full bridge controlled rectifier power supply.As shown in Figure 3, the main switch control signal generation circuit that main switch control signal generating unit 21 comprises two route comparers, RC conditioned circuit, connects and composes with door, driver element 22 is made of four chip for driving U13, U14, U15, U16, and single-phase bridge is controlled master unit 23 entirely and is made of four diode D55, D56, D57, D58, four field effect transistor Q6, Q7, Q8, Q9 and pull-up resistor RL2.The connection of main switch control signal generation circuit is identical with main switch control signal generation circuit in the single phase full bridge semi controlled rectifier, in the one way switch control signal generation circuit link to each other with the input of chip for driving U13, U16 with output door U12A, the output of U13, U16 links to each other with the grid of field effect transistor Q6, Q9 respectively, in another way switch control signal generation circuit link to each other with the input of chip for driving U14, U15 with output door U12B, the output of U14, U15 links to each other with the grid of field effect transistor Q7, Q8 respectively.During experiment, AC signal after the transformation is flowed to two comparers, regulate adjustable resistance R26, the R27 of RC conditioned circuit, be equivalent to regulate the trigger angle of thyristor circuit the inside, just can obtain the full-controlled rectifier waveform on pull-up resistor RL2, this waveform and the Power Electronic Technique resulting waveform of teaching when adopting the thyristor full-controlled rectifier in the book is identical.
BUCK reduction voltage circuit 3 comprises AC transformation unit 31, rectification filtering unit 32, BUCK master unit 33, driver element 34, PWM waveform generating unit 35.As shown in Figure 4, BUCK master unit 33 is made of field effect transistor Q1, diode D1, inductance L 1, capacitor C 1 and pull-up resistor RL3.The input of rectification filtering unit 32 connects the output of AC transformation unit 31, the output of rectification filtering unit 32 connects the drain electrode of field effect transistor Q1, the source electrode of Q1 links to each other with the negative pole of diode D1, an end of inductance L 1, be connected capacitor C 1 and pull-up resistor RL3, the plus earth of diode D1 between the other end of inductance L 1 and the ground.The output of PWM waveform generating unit 35 connects the input of driver element 34, and the output of driver element 34 links to each other with the grid of field effect transistor Q1.During experiment, AC signal is flowed to the AC transformation unit, under the control of PWM waveform generating unit, the voltage that on pull-up resistor RL3, just can be reduced.
BOOST booster circuit 4 comprises AC transformation unit 41, rectification filtering unit 42, BOOST master unit 43, driver element 44, PWM waveform generating unit 45.As shown in Figure 5, BOOST master unit 43 is made of field effect transistor Q2, diode D2, inductance L 2, capacitor C 2 and pull-up resistor RL4.The input of rectification filtering unit 42 connects the output of AC transformation unit 41, the output of rectification filtering unit 42 connects an end of inductance L 2, the other end of inductance L 2 links to each other with the positive pole of diode D2, the drain electrode of field effect transistor Q2, be connected capacitor C 2 and pull-up resistor RL4, the source ground of field effect transistor Q2 between the negative pole of diode D2 and the ground.The output of PWM waveform generating unit 45 connects the input of driver element 44, and the output of driver element 44 links to each other with the grid of field effect transistor Q2.During experiment, AC signal is flowed to the AC transformation unit, under the control of PWM waveform generating unit, the voltage that on pull-up resistor RL4, just can obtain raising.
The utility model integrates single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, BUCK reduction voltage circuit and BOOST booster circuit, but four kinds of circuit of simultaneous verification, diverse in function, experiment is convenient.In single phase full bridge semi controlled rectifier, single phase full bridge controlled rectifier, replace teach thyristor in the book of Power Electronic Technique, can obtain identical experimental result, simplify the experimental provision circuit again, reduce cost by field effect transistor.Input ac voltage is depressured to safe voltage scope (ceiling voltage is not higher than DC30V) through voltage transformation unit, and the voltage that makes each point in the whole experiment device all within the safe voltage scope, has been guaranteed the security of experiment.
Claims (6)
1. a Power Electronic Technique experimental provision is characterized in that comprising single phase full bridge semi controlled rectifier (1), single phase full bridge controlled rectifier (2), BUCK reduction voltage circuit (3) and BOOST booster circuit (4); Described single phase full bridge semi controlled rectifier (1) comprises main switch control signal generating unit (11), driver element (12), the single-phase bridge half control master unit (13) that links to each other successively and is the power conversion unit (14) of whole single phase full bridge semi controlled rectifier power supply that described single-phase bridge half control master unit (13) is made of four diodes, two field effect transistor and a pull-up resistor; Described single phase full bridge controlled rectifier (2) comprises that the main switch control signal generating unit (21), driver element (22), the single-phase bridge that link to each other are successively controlled master unit (23) entirely and is the power conversion unit (24) of whole single phase full bridge controlled rectifier power supply that described single-phase bridge is controlled master unit (23) entirely and is made of four diodes, four field effect transistor and a pull-up resistor.
2. Power Electronic Technique experimental provision according to claim 1, it is characterized in that main switch control signal generating unit (11,21) in described single phase full bridge semi controlled rectifier (1), the single phase full bridge controlled rectifier (2) include comparer, with door and RC conditioned circuit, the output of comparer had both connect the adjustable resistance pin of RC conditioned circuit, connect a input end again with door, the tie point of adjustable resistance and electric capacity with link to each other with another input end of door, with the input end of the described driver element of output termination (12,22) of door.
3. Power Electronic Technique experimental provision according to claim 2, the main switch control signal generating unit (11) that it is characterized in that described single phase full bridge semi controlled rectifier (1) comprises two route comparers, the RC conditioned circuit, the main switch control signal generation circuit that connects and composes with door, the driver element (12) of described single phase full bridge semi controlled rectifier (1) comprises two chip for driving U8, U9, the output of two-way main switch control signal generation circuit connects the input pin of two chip for driving respectively, the output pin of two chip for driving respectively with described single-phase bridge half control master unit (13) in two field effect transistor Q4, the grid of Q5 links to each other.
4. Power Electronic Technique experimental provision according to claim 2, the main switch control signal generating unit (21) that it is characterized in that described single phase full bridge controlled rectifier (2) comprises two route comparers, the RC conditioned circuit, the main switch control signal generation circuit that connects and composes with door, the driver element (22) of described single phase full bridge controlled rectifier (2) comprises four chip for driving U13, U14, U15, U16, the output of two-way main switch control signal generation circuit connects the input pin of four chip for driving respectively, and the output pin of four chip for driving is controlled four field effect transistor Q6 in the master unit (23) entirely with described single-phase bridge respectively, Q7, Q8, the grid of Q9 links to each other.
5. Power Electronic Technique experimental provision according to claim 1, it is characterized in that described BUCK reduction voltage circuit (3) comprises AC transformation unit (31), rectification filtering unit (32), BUCK master unit (33), driver element (34), PWM waveform generating unit (35), described BUCK master unit (33) is by field effect transistor, diode, inductance, electric capacity and pull-up resistor constitute, the input of rectification filtering unit (32) connects the output of AC transformation unit (31), the output of rectification filtering unit (32) connects the drain electrode of field effect transistor, the source electrode of field effect transistor and the negative pole of diode, one end of inductance links to each other, be connected electric capacity and pull-up resistor between the other end of inductance and the ground, the plus earth of diode, the output of described PWM waveform generating unit (35) connects the input of driver element (34), and the output of driver element (34) links to each other with the grid of field effect transistor.
6. Power Electronic Technique experimental provision according to claim 1, it is characterized in that described BOOST booster circuit (4) comprises AC transformation unit (41), rectification filtering unit (42), BOOST master unit (43), driver element (44), PWM waveform generating unit (45), described BOOST master unit (43) is by field effect transistor, diode, inductance, electric capacity and pull-up resistor constitute, the input of rectification filtering unit (42) connects the output of AC transformation unit (41), the output of rectification filtering unit (42) connects an end of inductance, the other end of inductance and the positive pole of diode, the drain electrode of field effect transistor links to each other, be connected electric capacity and pull-up resistor, the source ground of field effect transistor between the negative pole of diode and the ground; The output of described PWM waveform generating unit (45) connects the input of driver element (44), and the output of driver element (44) links to each other with the grid of field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200885715U CN201203974Y (en) | 2008-06-06 | 2008-06-06 | Electric force electronic technology experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200885715U CN201203974Y (en) | 2008-06-06 | 2008-06-06 | Electric force electronic technology experimental device |
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| Publication Number | Publication Date |
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| CN201203974Y true CN201203974Y (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200885715U Expired - Fee Related CN201203974Y (en) | 2008-06-06 | 2008-06-06 | Electric force electronic technology experimental device |
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| CN (1) | CN201203974Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136994A (en) * | 2011-11-23 | 2013-06-05 | 上海工程技术大学 | Open programmable logic controller (PLC) electrical engineering practice device based on safety voltage |
| CN104616575A (en) * | 2015-02-16 | 2015-05-13 | 南京工程学院 | Digital power electronic experiment device |
-
2008
- 2008-06-06 CN CNU2008200885715U patent/CN201203974Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103136994A (en) * | 2011-11-23 | 2013-06-05 | 上海工程技术大学 | Open programmable logic controller (PLC) electrical engineering practice device based on safety voltage |
| CN104616575A (en) * | 2015-02-16 | 2015-05-13 | 南京工程学院 | Digital power electronic experiment device |
| CN104616575B (en) * | 2015-02-16 | 2017-06-20 | 南京工程学院 | A kind of Digital Electric electronic experimental device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20100606 |