This Trainer comprises a Firing & Bridges panel, a Motor Control Circuits panel, a Three Phase Supply Panel, SCR & Diodes Panel, and dc motor, instrumentation, etc to enable the study of the principles of Single and Three Phase thyristor circuits and their application in the control of dc motors.
Assignment Courseware
The assignment work is covered in a teaching manual. These include background, practical work, questions and answers. This manual can be used as the basis of a complete course on power electronics.
Curriculum Coverage
The dc Motor Control trainer enables the study of dc motor control in both Single and Three Phase circuits. Motor speed and current control circuits may be investigated with various types of feedback, including PI control and 4 Quadrant control.
The range of assignment work that can be carried out with the trainer includes:
Basic Firing Circuits
- firing circuit requirements
Basic Motor Control
- Single Phase half and full wave, controlled bridge
- Three Phase half and full wave, controlled bridge
- the flywheel diode
Advanced Firing Circuits
- thyristor phasing
- multipurpose firing circuits
Advanced Motor Control
- feedback measurement
- full wave controlled bridge with speed feedback
- PI control
- full wave controlled bridge with armature voltage feedback
- full wave controlled bridge with VI feedback
4 Quadrant Control
- dual converter - Single Phase
- dual converter - Three Phase
- converter selection by control signal
- converter selection by load current
- converter selection by control signal & load current
- continuous & discontinuous current operation
- bi-directional speed & current control
- bi-directional control time behaviour
- regenerative braking
- effects of inertia on system performance
Equipment List
- Three Phase Supply
- dc Shunt Machine
- Variable Resistive Load 200 Ohms
- Variable Inductive Load 700mH
- Inertia Load
- Friction Brake
- ac/dc Digital Voltmeter/Ammeter
- dc Tachogenerator
- Optical/Contact Tachometer
- 5 Way DIN-DIN Lead
- 4mm Patch Lead Set
- SCR & Diodes
- Firing Circuits & Bridges
- Motor Control Circuits
- System Frame
- Oscilloscope/Computer Housing
- Lead Storage Bin