CN112201128A - Voltage single closed loop direct current speed regulation system training examination device - Google Patents

Voltage single closed loop direct current speed regulation system training examination device Download PDF

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Publication number
CN112201128A
CN112201128A CN202011316779.XA CN202011316779A CN112201128A CN 112201128 A CN112201128 A CN 112201128A CN 202011316779 A CN202011316779 A CN 202011316779A CN 112201128 A CN112201128 A CN 112201128A
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circuit
current speed
fault
voltage single
loop direct
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CN202011316779.XA
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Chinese (zh)
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陈柬
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Nanjing Polytechnic Institute
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Nanjing Polytechnic Institute
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
    • G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits

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  • Business, Economics & Management (AREA)
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  • Inverter Devices (AREA)

Abstract

The invention discloses a practical training and examining device for a voltage single closed-loop direct-current speed regulating system, which comprises a voltage single closed-loop direct-current speed regulating circuit (1), an auxiliary circuit (2) and a fault operation panel (3), and is characterized in that: the voltage single-closed-loop direct-current speed regulation circuit (1) comprises 10 unit circuits such as a given circuit (01), an LM741 regulator (02) and a three-phase trigger circuit (03), the fault operation panel (3) comprises a power switch, a fault operation switch, a status indicator lamp and a test hole, the auxiliary circuit (2) comprises a relay, the voltage single-closed-loop direct-current speed regulation circuit (1) is connected with the auxiliary circuit (2) and the fault operation panel (3) through a wire according to an electric circuit, fault points K1-K5 are arranged in the voltage single-closed-loop direct-current speed regulation circuit (1), and the relay of the voltage single-closed-loop direct-current speed regulation circuit, which passes through the auxiliary circuit, is connected with the fault operation switch on the fault operation panel. The system can develop the capability of students in the aspects of system map recognition, system debugging, waveform observation, actual fault analysis and the like aiming at the voltage single closed loop direct current speed regulation technology.

Description

Voltage single closed loop direct current speed regulation system training examination device
Technical Field
The invention relates to a frequency conversion speed regulation practical training and examining device, in particular to a voltage single closed loop direct current speed regulation system practical training and examining device.
Background
Voltage single closed loop dc speed regulation is an important aspect of power electronics technology application. In traditional vocational education, experimental practical training related to voltage single-closed-loop direct-current speed regulation is realized by adopting a practical training device manufactured by a teaching instrument manufacturer. Aiming at the aspects of more important system debugging, waveform observation, actual fault analysis and the like in voltage single closed loop direct current speed regulation, almost all practical training devices are not involved, so that the learning obstacles of students in the aspect of voltage single closed loop direct current speed regulation are large.
Therefore, a practical training and examining device for the voltage single-closed-loop direct-current speed regulating system is urgently needed to be developed, and the comprehensive debugging skill of students in the aspect of the voltage single-closed-loop direct-current speed regulating system can be improved.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a training and checking device for a voltage single closed-loop direct-current speed regulation system, which can be used for training the capabilities of students in the aspects of system identification, system debugging, waveform observation, actual fault analysis and the like aiming at the voltage single closed-loop direct-current speed regulation technology.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a real standard examination device of voltage single closed loop direct current speed control system, includes voltage single closed loop direct current speed control circuit (1), auxiliary circuit (2) and trouble operating panel (3), its characterized in that: the voltage single-closed-loop direct-current speed regulation circuit (1) comprises a given circuit (01), an LM741 regulator (02), a three-phase trigger circuit (03), a driving circuit (04), a three-phase bridge rectifier circuit (05), a direct-current shunt-excitation motor circuit (06), an excitation power supply (07), a direct-current generator load circuit (08), a voltage isolator (09) and a logic inverter circuit (10), wherein the LM741 regulator (02) comprises an amplitude limiter (RP), the three-phase bridge rectifier circuit (05) comprises VT 1-VT 6 switching tubes, the fault operation panel (3) comprises a power switch, a fault operation switch, an input power supply circuit working state indicating lamp, a single-closed-loop speed regulation operation state indicating lamp, a given output testing hole, an LM741 output testing hole, a three-phase bridge rectifier circuit output testing hole, a voltage isolator output testing hole, The test hole for the logic inverter circuit output is characterized in that the auxiliary circuit (2) comprises a relay, a lead is connected between the voltage single closed-loop direct current speed regulating circuit (1) and the auxiliary circuit (2) and between the voltage single closed-loop direct current speed regulating circuit (1) and the fault operation panel (3) according to an electric circuit, fault points K1-K5 are arranged in the voltage single closed-loop direct current speed regulating circuit (1), and the fault points are connected with a fault operation switch on the fault operation panel through the relay of the auxiliary circuit.
The fault points K1-K5 set in the voltage single closed loop direct current speed regulation system are respectively an output open circuit fault point in a simulation 0-15V given circuit (01), an amplitude limiting potentiometer RP open circuit fault point in a simulation LM741 regulator (02), a switch tube VT1 open circuit fault point in a simulation three-phase bridge rectification circuit (05), an output open circuit fault point in a simulation voltage isolator (05) and an output open circuit fault point in a simulation logic inverse circuit (07).
Adopt above-mentioned technical scheme's beneficial effect: a fault point is set in an actual voltage single closed loop direct current speed regulation system, and the fault can be switched on or switched off according to needs. When a fault point is closed, the map recognition capability of the voltage single closed-loop direct current speed regulation system of a student can be cultured, and the overall analysis and design capability of the voltage single closed-loop direct current speed regulation system is improved; when the circuit fault point is opened, the waveform observation, fault analysis and fault solving capabilities of students are cultured, so that the professional skills of the students in the aspect of power electronic technology are improved.
Drawings
FIG. 1 is a schematic diagram of a practical training and examining device of a voltage single closed-loop direct current speed regulating system provided with fault points K1-K5.
Detailed Description
The invention is described in detail below with reference to the following figures and examples:
the utility model provides a real standard examination device of voltage single closed loop direct current speed control system, includes voltage single closed loop direct current speed control circuit (1), auxiliary circuit (2) and trouble operating panel (3), its characterized in that: the voltage single closed loop direct current speed regulation circuit (1) comprises a given circuit (01), an LM741 regulator (02), a three-phase trigger circuit (03), a drive circuit (04), a three-phase bridge rectifier circuit (05), a direct current shunt excitation motor circuit (06), an excitation power supply (07), a direct current generator load circuit (08), a voltage isolator (09) and a logic inverter circuit (10), wherein the LM741 regulator (02) comprises an amplitude limiter (RP), the three-phase bridge rectifier circuit (05) comprises VT 1-VT 6 switching tubes, the fault operation panel (3) comprises a power switch, a fault operation switch, a given power supply working state indicating lamp, a single closed loop speed regulation operation state indicating lamp, a given output testing hole, an LM741 output testing hole, a three-phase bridge rectifier output testing hole, a voltage isolator output testing hole and a logic inverter circuit output testing hole, the auxiliary circuit (2) comprises a relay, a lead is connected between the voltage single closed-loop direct current speed regulating circuit (1) and the auxiliary circuit (2) and between the voltage single closed-loop direct current speed regulating circuit (1) and the fault operation panel (3) according to an electric circuit, fault points K1-K5 are arranged in the voltage single closed-loop direct current speed regulating circuit (1), and the fault points are connected with a fault operation switch on the fault operation panel through the relay of the auxiliary circuit. And the teacher can flexibly set faults in the test training and check the faults conveniently.
The 5 fault points arranged in the practical training and examining device of the voltage single closed loop direct current speed regulating system are respectively as follows:
fault point K1 (located within 01 cell circuit): simulating 0-15V given (01) output open circuit. The fault phenomenon is as follows: the 'given power supply working state indicating' lamp cannot be lightened, the 'single closed loop speed regulation running state indicating' lamp cannot be lightened, the 'given output' testing hole is 0V, the 'LM 741 output' testing hole is 0V, and the circuit cannot be started normally.
Fault point K2 (located within 02-cell circuit): the limiting potentiometer RP in the analog LM741 regulator (02) is open. The fault phenomenon is as follows: the 'given power supply working state indicating' lamp is normally lighted, the 'single closed loop speed regulation running state indicating' lamp cannot be lighted, the 'given output' test hole voltage is normal, the 'LM 741 output' test hole voltage is normal, and the circuit still cannot be normally started.
Failure point K3 (located within 05 cell circuit): in the analog three-phase bridge rectifier circuit (05), a switching tube VT1 is disconnected. The fault phenomenon is as follows: the ' given power supply working state indicating ' lamp is normally lighted, the ' single closed loop speed regulation running state indicating ' lamp is normally lighted, the ' given output ' test hole voltage is normal, the ' three-phase bridge type rectifier circuit outputs ' test hole waveform phase failure ', and the ' voltage isolator outputs ' test hole voltage is lower than 10V.
Fault point K4 (located within 09 unit circuits): the output of the analog voltage isolator (05) is open. The fault phenomenon is as follows: the 'given power supply working state indicating' lamp is normally lighted, the 'single closed loop speed regulation running state indicating' lamp cannot be lighted, the 'given output' test hole voltage is normal, the 'three-phase bridge type rectifier circuit output' test hole waveform is normal, and the 'voltage isolator output' test hole voltage is 0.
Fault point K5 (located within 07 unit circuit): in the analog logic inverse circuit (07), the output is open-circuited. The fault phenomenon is as follows: the 'given power supply working state indicating' lamp is normally lighted, the 'single closed loop speed regulation running state indicating' lamp cannot be lighted, the 'given output' test hole voltage is normal, the 'three-phase bridge type rectifier circuit output' test hole voltage cannot be stable, and the circuit is in an open loop running state.

Claims (6)

1. The invention discloses a practical training and examining device for a voltage single closed-loop direct-current speed regulating system, which comprises a voltage single closed-loop direct-current speed regulating circuit (1), an auxiliary circuit (2) and a fault operation panel (3), and is characterized in that: the voltage single-closed-loop direct-current speed regulation circuit (1) comprises a given circuit (01), an LM741 regulator (02), a three-phase trigger circuit (03), a driving circuit (04), a three-phase bridge rectifier circuit (05), a direct-current shunt-excitation motor circuit (06), an excitation power supply (07), a direct-current generator load circuit (08), a voltage isolator (09) and a logic inverter circuit (10), wherein the LM741 regulator (02) comprises an amplitude limiter (RP), the three-phase bridge rectifier circuit (05) comprises VT 1-VT 6 switching tubes, the fault operation panel (3) comprises a power switch, a fault operation switch, an input power supply circuit working state indicating lamp, a single-closed-loop speed regulation operation state indicating lamp, a given output testing hole, an LM741 output testing hole, a three-phase bridge rectifier circuit output testing hole, a voltage isolator output testing hole, The test hole for the logic inverter circuit output is characterized in that the auxiliary circuit (2) comprises a relay, a lead is connected between the voltage single closed-loop direct current speed regulating circuit (1) and the auxiliary circuit (2) and between the voltage single closed-loop direct current speed regulating circuit (1) and the fault operation panel (3) according to an electric circuit, fault points K1-K5 are arranged in the voltage single closed-loop direct current speed regulating circuit (1), and the fault points are connected with a fault operation switch on the fault operation panel through the relay of the auxiliary circuit.
2. The practical training assessment device for the voltage single closed loop direct current speed regulation system according to claim 1, wherein the fault point K1 is an output open circuit fault point in a given voltage range of 0-15V (01).
3. The practical training assessment device for the voltage single closed loop direct current speed regulation system according to claim 1, wherein the fault point K2 is an open fault point of a limiting potentiometer RP in an analog LM741 regulator (02).
4. The practical training assessment device for the voltage single closed loop direct current speed regulation system according to claim 1, wherein the fault point K3 is a fault point of a switching tube VT1 open circuit in a simulated three-phase bridge rectifier circuit (05).
5. The practical training and examining device for the voltage single-closed-loop direct-current speed regulating system according to claim 1, wherein the fault point K4 is an output open-circuit fault point in an analog voltage isolator (05).
6. The practical training assessment device for the voltage single closed loop direct current speed regulation system according to claim 1, wherein the fault point K5 is an output open circuit fault point in an analog logic inverse circuit (07).
CN202011316779.XA 2020-11-23 2020-11-23 Voltage single closed loop direct current speed regulation system training examination device Withdrawn CN112201128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011316779.XA CN112201128A (en) 2020-11-23 2020-11-23 Voltage single closed loop direct current speed regulation system training examination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011316779.XA CN112201128A (en) 2020-11-23 2020-11-23 Voltage single closed loop direct current speed regulation system training examination device

Publications (1)

Publication Number Publication Date
CN112201128A true CN112201128A (en) 2021-01-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011316779.XA Withdrawn CN112201128A (en) 2020-11-23 2020-11-23 Voltage single closed loop direct current speed regulation system training examination device

Country Status (1)

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CN (1) CN112201128A (en)

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Application publication date: 20210108