DYBP-05 Double-closed DC speed regulation (pressure regulation) assessment experiment platform

 This equipment can meet the needs of schools for tr*ning and skill assessment of technicians and senior m*ntenance electricians , and can also be used as practical tr*ning for courses such as "Power Electronics Technology", "Electric Drive Automatic Control System", and "DC Speed ​​Regulation" in ordinary colleges and universities. equipment. It can complete the speed single closed loop with current cutoff negative feedback, current single closed loop and voltage and current double closed loop speed regulation tr*ning. By setting faults, it can also complete the practical tr*ning and assessment on automation.

2. Scope of application

 This device covers the practical tr*ning projects required by professional courses such as "DC Speed ​​Regulation", " Motor Control" and "Electric Drive Automatic Control System" offered by various colleges and universities and higher vocational colleges.

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. Overall dimensions: 850cm×70cm×180cm

4. Basic configuration

1. Industrial control cabinet (with glass door, intuitive and clear)

2. The uppermost part of the control cabinet is the oscilloscope placement area and fault box. The middle part is the power control part, the tr*ning wiring area and the corresponding monitoring instruments. It is equipped with a ±300V DC voltmeter, a ±2.0A DC ammeter and a digital tachometer. In order to indicate the operating status of the DC motor, the lower part of the control cabinet is equipped with a three-phase synchronous transformer, a three-phase current transformer and a power thyristor module.

3. DC motor set

The tr*ning control cabinet is equipped with a DC motor, generator, and speed measurement system. The specific parameters are as follows:

①DC motor (rated voltage: 220V; rated power: 185W; rated current: 1.10A; rated speed: 1500r/min)

②Generator (rated voltage: 220V; rated power: 240W; rated current: 1.1A; rated speed: 1500r/min)

The motor shaft is also equipped with a speed measurement feedback system to provide corresponding speed signals to the speed control system.

4. Resistive load

5. The equipment is also equipped with a set of power adjustable resistors, which are connected to the armature circuit of the DC generator. Adjusting the load resistance changes the output torque of the motor.

5. Practical tr*ning projects

1. Open-loop system parameter debugging

(1) Synchronous signal observation

(2) Sawtooth wave slope adjustment

(3)Initial angle setting

(4) Minimum rectification angle and minimum inversion angle setting

(5) Three-phase fully controlled rectifier circuit

2. Closed-loop system parameter debugging

(1) Voltage feedback coefficient setting

(2) Current feedback coefficient setting

(3) Speed ​​feedback system tuning

(4) Current cutoff negative feedback setting

3. Current single closed-loop speed regulation system

4. Speed ​​single closed-loop speed regulation system

5. Single closed-loop speed regulation system with current cutoff negative feedback speed

6. Speed ​​and current double closed-loop speed regulation system

7. Voltage and current double closed-loop speed regulation system

6. Fault setting function

1. Simulate three-phase synchronization signal phase loss

2. Simulate thyristor trigger circuit f*lure

3. Regulator f*lure in analog voltage single closed-loop speed control system

4. Regulator f*lure in the simulated speed single closed-loop speed control system

5. Simulate the fault of the speed regulator in the double closed-loop speed control system

6. Simulate current regulator f*lure in double closed-loop speed control system

 The entire set of equipment can be set up with 8 independent fault points, and more fault situations can be simulated through the arrangement and combination of multiple fault points.