Dydjq-2 motor electrical technology experiment platform

I. Overview

" Motor and electrical technology experimental device" is a novel comprehensive experimental device designed by our company. It integrates the current "electrical machinery", "motor and drag", "control micromotor", "motor control" and "continuation" of colleges and universities in China. Requirements for the experimental syllabus of courses such as "Electrical Contact Control" and "Factory Electrical Control". It is especially suitable for the upgrading and transformation of existing motor and electrical technology experimental equipment in colleges and universities. It also provides ideal experimental equipment for new or expanded laboratories and rapid opening of experimental courses in secondary vocational schools, vocational and technical colleges, etc., and provides ideal experimental equipment for teachers or It provides good experimental conditions for graduate students to develop new experiments or conduct scientific research.

2. Characteristics

1. Strong comprehensiveness: This device integrates all experimental projects of electrical and electrical courses in various domestic colleges and universities.

2. Strong adaptability. It can satisfy the experimental teaching of corresponding courses in various schools. The depth and breadth of experiments can be flexibly adjusted according to needs. Popularization and improvement can be organically combined according to the teaching process. The device adopts a component structure and is easy to replace. If you need to expand functions or develop new experiments, you only need to add components and it will never be eliminated.

3. Strong complete set: From instruments and meters, special power supply, motors and other experimental components to special wires for experimental connection, it is fully equipped. The performance and specifications of the supporting components are closely combined with the needs of the experiment.

4. Strong intuitiveness. Each experimental pendant adopts a separated structure, with component panels and clear diagrams. Each pendant has clear tasks and is easy to operate and m*nt*n.

5. Strong scientific nature. The device occupies a small area, saving experimental space and reducing infrastructure investment; the supporting small motors are specially designed to simulate the characteristics and parameters of small and medium-sized motors; small motors consume less power and save energy; experimental

Low noise, neat and beautiful, improving the experimental environment; electrical control experiments, rich in content, reasonable design, in addition to deepening theoretical knowledge, also lay a good foundation for students to enter the society; measuring instruments adopt pointer type (with over-range alarm, etc.), digital It combines mode, intelligence and human-machine dialogue, and is configured closely with the needs of teaching experiments to modernize the device measurement methods; it is equipped with a timer and alarm recorder to provide a unified standard for the assessment of students' experimental skills.

6. The control panel has strong openness and power supply isolation (floating design), and is equipped with internal and external voltage-type leakage protection devices and current-type leakage protection devices to ensure the safety of the operator; each power output has monitoring and short-circuit protection, etc. Functional and easy to use; each measuring instrument has a protection function. The entire device is carefully designed, guaranteed by reliable component quality and reliable technology, and has excellent product performance. All of these create conditions for open experiments and are conducive to improving students' ability to analyze and solve problems.

3. Technical performance

1. Input power: three-phase four-wire (or three-phase five-wire) ~380V±10% 50Hz

2. Working environment: temperature -10℃～+40℃, relative humidity <85% (25℃), altitude <4000m

3. Device capacity: <1.5KVA

4. Weight: 480Kg

5. Overall dimensions: 187×73×160cm3

4. Experimental projects

1. DC motor experiment

(1) Direct starting, speed regulation and steering change of separately excited DC motors

(2) DC generator

(3) DC shunt motor

2. Transformer experiment

(1) Single-phase transformer (no load, short circuit, load)

(2) Connection group and asymmetric short circuit of three-phase transformer

(4) Three-phase transformers operating in parallel

(5) Parallel operation of single-phase transformers

3. Asynchronous motor experiment

(1) Operating characteristics of three-phase squirrel cage asynchronous motor (no load, short circuit, load)

(2) Starting and speed regulation of three-phase asynchronous motors (direct starting, star-delta decompression starting, autotransformer decompression starting, rotor winding series resistance starting)

(3) Single-phase capacitor-run asynchronous motor

4. Synchronous motor experiment

(1) Operating characteristics of three-phase synchronous generator

(2) Grid-connected operation of three-phase synchronous generator

(3) Three-phase synchronous motor

(4) Determination of three-phase synchronous motor parameters

5. Determination of mechanical characteristics of electric motors

(1) Mechanical characteristics of DC separately excited motors under various operating conditions

(2) Mechanical characteristics of three-phase asynchronous motors under various operating conditions

(3) Surveying and mapping of three-phase asynchronous motor MS curve

6. Control motor experiment

(1) DC servo motor experiment

(2) Rotary encoder experiment

(3) Stepper motor test

7 Motor and transformer m*ntenance tr*ning

(1) DC motor tr*ning

(1) Inspection and disassembly of DC motor

(2) M*ntenance and inspection of commutator and brushes

(3) M*ntenance of armature winding and stator winding

(4) Operation and m*ntenance of DC motors

(2) Transformer tr*ning     

(1) Installation of transformer

(2) Operation and m*ntenance of transformer     

(3) M*ntenance of transformer

(3) Three-phase asynchronous motor tr*ning

(1) Basic knowledge of three-phase asynchronous motor windings

(2) Selection, installation, inspection and commissioning of three-phase asynchronous motors

(3) Monitoring, m*ntenance, inspection and testing of motors during operation

(4) Disassembly of three-phase asynchronous motor

(5) Coil winding of three-phase asynchronous motor

(6) Embedded wire after rewinding of three-phase asynchronous motor

(7) Connection and welding of three-phase asynchronous motor stator winding after rewinding

(8) Inspection of three-phase asynchronous motor after rewinding

(9) P*nt dipping and complete machine inspection after rewinding and inlaying of three-phase asynchronous motors

(10) Assembly of three-phase asynchronous motor

(11) Common faults and troubleshooting methods of three-phase asynchronous motors

5. Basic equipment of the device

1. DQ01 power control panel (iron plastic spray structure, aluminum panel)

(1) AC power supply

    Provides three-phase 0~450V adjustable AC power supply, and at the same time can obt*n single-phase 0~250V adjustable power supply (equipped with a three-phase linkage auto-coupling voltage regulator (specification 1.5KVA, 0~450V), overcoming the problem of three single-phase There are many disadvantages to using a ch*n structure or a gear structure for phase voltage regulators). Adjustable AC power output with overcurrent protection

Technology, phase-to-phase and line-to-line overcurrent and direct short circuit can be automatically protected, overcoming the trouble caused by replacing fuses. Equipped with three pointer AC voltmeters, which indicate the three-phase grid voltage and the three-phase voltage regulation voltage through the switch.

(2) Two circuits of high-voltage DC power supply

    Provides one set of 220V (0.5A) excitation power supply and 00~230V (3A) continuously adjustable regulated armature power supply (PWM power supply has built-in overcurrent and overvoltage protection functions, etc.), and is equipped with a DC digital display voltmeter and Toggle switch.

(3) Five major systems of personal safety protection

    It is equipped with a set of three-phase isolation transformers (the three-phase power supply passes through the key switch and contactor, then to the isolation transformer, and then is output through the three-phase voltage regulator) to isolate the output from the power grid and play a cert*n protective role in personal safety;

    Equipped with a voltage-type leakage protector, if there is leakage in the circuit during the experiment, protection can be implemented and the power supply can be cut off;

     It is equipped with a current leakage protector. If there is leakage in the control panel and the leakage current exceeds a cert*n value, the power supply will be cut off. The strong current connecting wires and sockets adopt a fully enclosed structure, which is safe, reliable and prevents electric shock.

(4) Timer and alarm recorder (service manager): It has the functions of setting time, alarming on time, cutting off power and recording the number of various alarms.

(5) There are two st*nless steel pipes in the large groove on the front of the control panel, which can hang instruments and experimental components. There are multiple small round single-phase three-core 220V power sockets at the bottom of the groove for power supply to instruments and other components. There are three-pole 220V power sockets and three-phase four-pole 380V power sockets on both sides of the control panel. There is a 220V, 40W fluorescent lamp for experimental bench lighting.

2. DQ02 experimental table

    The experimental table is made of iron with a double-layer matt dense spray-p*nted structure. The tabletop is made of fireproof, waterproof and wear-resistant high-density board. It has a solid structure and is shaped like a rectangular closed structure. It has a beautiful and elegant appearance; it is equipped with two large drawers and cabinet doors. , used to place tools, store pendants and information, etc. The desktop is used to install the power control panel and provide a spacious and comfortable work surface. The experimental table is also equipped with four universal wheels and four fixed adjustment mechanisms, which are easy to move and fix, and are conducive to the layout of the laboratory.

3. DQ03-1 fixed motor guide r*l, photoelectric encoder speed measurement system and intelligent digital display tachometer

Including guide r*ls for fixing the motor, etc. The guide r*l has good flatness, no stress deformation, fine processing, good concentricity, and good interchangeability. It can ensure that the concentricity between motors and motors, and motors and dynamometers does not exceed ±5 wires. The motor operation noise is small, and the experiment The parameters are typical and can better meet the experimental requirements. The speed measurement system adopts a high-precision photoelectric encoder speed measurement system, which overcomes the shortcomings of using a tachometer generator to measure speed such as poor linearity and inaccurate measurement.

4. DQ05 three-phase transformer (composed of three identical single-phase transformers, primary side 220V/0.35A, secondary side 55V/1.4A)

5. DQ07 DC compound-excited generator

(Un=DC200V, IN=0.5A, PN=100W, n=1600RPM/min, insulation grade E)

6. DQ09 DC parallel (separately) excited motor (Un=DC220V, IN=1.1A, PN=185W, n=1500RPM, insulation grade E)

7. DQ10 three-phase squirrel-cage asynchronous motor (AC3800V/220V, connection Y/Δ, speed 1420 RPM, power 100W, current 0.5A, insulation grade E)

8. DQ11 three-phase wire-wound asynchronous motor (AC220V, connection Y, speed 1380 RPM, power 120W, current 0.6A, insulation grade E)

9. GDQ12 wire-wound asynchronous motor starting and speed regulating resistor box

Provides a set of rotor starting and speed regulating resistors for three-phase wound asynchronous motors with five-speed coaxial adjustment of 0, 2, 5, 15 and 35.

10. DQ14 three-phase synchronous motor

When used as a generator, PN (W) = 170W, UN (V) = 220 (Y), IN (A) = 0.45A, nN (r/min) = 1500, UfN (V) = 14V, IfN (A) =1.2A, insulation grade E.

(When used as a motor, PN (W) = 90W, UN (V) = 220 (Y), IN (A) = 0.35A, nN (r/min) = 1500, UfN (V) = 10V, IfN (A )=0.8A, insulation grade E.

11. DQ16 single-phase capacitor-operated asynchronous motor

Un=220V, IN=1.0A, PN (W)=120W, n=1420r/min

12. DQ19 calibrated DC dynamometer (220V, 2.2A, 355W, 1500r/min)

It can be used as both a motor and a dynamometer. When used as a motor, it can be used as the prime mover of a generator or to drag the motor to complete the four-quadrant test. When used as a dynamometer, due to the special design of the motor, the capacity is 2 to 3 times that of the motor under test, and calibrated by precision instruments, it can well complete the test of the load output torque of the motor under test.

13. DQ22 DC digital voltage, mA, ammeter (three pieces)

    A DC digital display voltmeter is designed using ICL's high-performance AD ​​converter and high-speed MPU unit. It realizes human-machine dialogue function control mode through key control and digital display window. It has automatic and manual ranges, and the measuring range is 0-300V. Manual ranges are: 2V, 20V, 300V. The measurement accuracy is 0.5 level. It has data storage and query functions. It has the functions of over-range alarm, indication and cutting off the m*n power supply.

A DC digital display milliamp meter is designed using ICL's high-performance AD ​​converter and high-speed MPU unit. It realizes human-machine dialogue function control mode through key control and digital display window. With automatic and manual range, measuring range: 0-2000mA. Manual ranges are: 20mA, 200mA, 2000mA. The measurement accuracy is 0.5 level.

A DC digital ammeter with a measuring range of 0~5A, three and a half digits display, and an accuracy of 0.5.

14. DQ25 single three-phase intelligent power and power factor meter

    Designed by 24-bit dedicated DSP, 16-bit high-precision AD converter and high-speed MPU unit, it realizes human-machine dialogue function control mode through key control and digital display window. The software adopts RTOS design ideas and is equipped with PC monitoring software to enhance analysis capabilities. It can measure two single-phase powers P1 and P2 at the same time. The three-phase power is equal to the sum of the two-channel powers (the two-meter method measures the total three-phase power). The power measurement accuracy is level 1.0, the power factor measurement range is 0.3-1.0, the voltage and current range is 450V and 5A, and it can automatically determine the load properties (inductive display "L", capacitive display "C", pure resistance does not display), and can Store measurement data for review at any time.

15. DQ26 three-phase adjustable resistor (three sets of 90Ω×2/1.3A ceramic plate resistors)

16. DQ27 three-phase adjustable resistor (three sets of 900Ω×2/0.41A ceramic plate resistors)

17. DQ28 three-phase adjustable reactor

    Each phase is composed of a 127V/0.5A fixed reactor and a 0~250V auto-coupling voltage regulator. It can be used as a fixed inductor, an adjustable reactor, or an auto-coupling voltage regulator.

18. DQ29 adjustable resistor and capacitor

    Provides one set of 90Ω×2/1.3A and 900Ω×2/0.41A ceramic disk resistors, and one each of 35μF/450V and 4μF/450V power capacitors.

19. DQ31C fuse and switch board

    It consists of a fuse part, two three-pole double-throw switches, and one double-pole double-throw switch.

20. DQ32 rotating light, grid-connected switch, synchronous machine excitation power supply

    It consists of three sets of phase lights for grid connection (two yellow, green and red each), a set of grid-connected switches and a set of synchronous machine excitation power supply <5~40V/2.5A adjustable>.

21. DQ44 digital/analog AC ammeter (four pieces)

It consists of three digital AC ammeters and one pointer precision AC current meter. Measuring range 0~5A, automatic range judgment and automatic switching, accuracy level 0.5, four-digit digital display. A pointer type precision AC ammeter, using a meter head with a mirror and double scale marks (red and black) (read the corresponding scale marks for different ranges). The measuring range is 0~5A, divided into four categories: 0.3A, 1A, 3A and 5A. level, accuracy level 1.0, direct key switch, equipped with over-range indication, alarm and other functions.

 22. DQ45 digital/analog AC voltmeter (four pieces)

It consists of three digital AC voltmeters and one pointer precision AC current meter. Measuring range: 0~450V, automatic range judgment and automatic switching, accuracy level 0.5, four-digit digital display. A pointer-type precision AC voltmeter, using a meter head with a mirror and double scale lines (red and black) (read the corresponding scale lines for different ranges), with a measuring range of 0 to 500V, divided into 10V, 30V, 100V, and 300V. 500V five-speed, accuracy level 1.0, direct key switch, equipped with over-range indication, alarm and other functions.

23. DQ36 stepper motor control box and stepper motor experimental components

This control box is used to control various operating modes of the stepper motor. Its control function is implemented by a single-chip microcomputer . The operating status of the motor is determined through keyboard operation and different display modes. This control box can be used to control various operating modes of three-phase, four-phase and five-phase stepper motors. It can realize single-step operation, continuous operation and preset number operation; it can realize single three-shot, double three-shot, three-phase six-beat and reversible operation of the motor.

24. Motor winding tools and equipment:

(1) A 500V megger, used to test the insulation resistance of the motor winding.

(2) 890B+ digital multimeter, three and a half digits display. 

(3) One clamp ammeter.

(4) Vernier caliper

25. Production equipment:

(1) A set of disassembly and installation tools: 6-inch three-claw puller, adjustable wrench, hammer, marking plate, crimping plate, scissors, etc.

(2) A set of winding devices: motor winding mold, winding shaft, winding frame, wire crimping frame, etc.

(3) A hand-operated electronic counting winding machine: the digital display range is 0 to 9999 turns, and the counting is accurate and convenient.

26. Unp*nted single-phase transformer: capacity 100VA, voltage AC220V/55V, current 0.45A/1.8A.

27. Unp*nted three-phase squirrel cage asynchronous motor: rated power 180W, voltage 380V (Y connection), speed 1400r/min.

28. Unp*nted separately excited DC motor: rated power 100W, voltage 220V, speed 2000r/min.

29. Structure pistol plug connection cable

There is no possibility of electric shock. Oxygen-free copper is used inside to form h*r-thin multi-strand wires to achieve the purpose of ultra-softness. It is covered with a nitrile polyvinyl chloride insulation layer, which is soft, high voltage resistance, high strength, and anti-proof. It has the advantages of hardening and good toughness. The plug is made of solid copper and is coated with beryllium light copper springs for excellent contact.

Seven equipment configuration list

serial number	Name	quantity	Remark
1	Power control panel	1 set
2	Experiment table	1 piece
3	Fixed motor guide r*l, optical code disk speed measurement system and intelligent digital display tachometer	1 item
4	Three-phase transformer	1 item
5	DC compound generator	1 set
6	DC shunt motor	1 set
7	Three-phase squirrel cage asynchronous motor	1 set
8	Three-phase wire-wound asynchronous motor	1 set
9	Wirewound asynchronous motor starting and speed regulating resistor box	1 item
10	Three-phase synchronous motor	1 set
11	Single-phase capacitor-run asynchronous motor	1 set
12	Calibrating DC Dynamometer	1 set
13	DC digital voltage, milliampere, and ammeter (three meters) (Note: According to the experimental requirements, each set requires 2 pieces)	2 pieces
14	Digital/Analog AC Ammeter	1 item
15	Digital/Analog AC Voltmeter	1 item
16	Single/three-phase intelligent power and power factor meter	1 item
17	Three-phase adjustable resistor (90Ω*2/1.3A per group)	1 item
18	Three-phase adjustable resistor (900Ω*2/0.41A per group)	1 item
19	Three-phase adjustable reactor	1 item
20	Adjustable resistors and capacitors	1 item
twenty one	Fuse and switch board	1 item
twenty two	Rotating lamp, grid-connected switch, synchronous machine excitation power supply	1 item
twenty three	Stepper motor control box and stepper motor experimental components	1 item
twenty four	Motor winding tools, instruments and production equipment	1 set
25	Unvarnished single-phase transformer	1 item
26	Unp*nted three-phase squirrel cage asynchronous motor	1 item
27	Unp*nted separately excited DC motor	1 item
28	Highly reliable sheath structure pistol plug experimental connection cable and accessories	1 set
29	Experiment instructions	1 set
30	Screwdriver, 14mm wrench and related wearing accessories)	1 set