E 2.5.1.2 Sterowanie napędem z panelem szkoleniowym

The experiments are carried out using training panels in panel frames.

Objectives

• Experiment set-up and wiring according to circuit diagrams
• How to handle closed-loop control systems
• Use of computer-controlled measuring interfaces
• Integration of block-oriented software in practical applications of closed-loop control

The equipment set is mainly concerned with the closed-loop control aspects of electrical drives. In addition, various machine characteristics are measured. The main training system is the 10 W machine set, which makes up a coupled motor-generator system. An integrated electronic load can be connected to the generator. This allows the effects of load fluctuations to be checked.

Features

• Compact machine set with integrated power amplifier
• Integrated electronic load with visual display of power which has been converted into heat
• Integrated measuring instruments for speed and torque
• Pre-filter which can be activated/deactivated to change the systems's order

The equipment set incorporates student experiments which can be carried out in a laboratory safely using safety extra-low voltage. Experiment instructions are contained in a manual in either printed or digital form.

The target group is made up of commercial apprentices and students of power engineering. The course offers experiments at an intermediate level for vocational colleges and undergraduate level.

Topics

• Speed-torque characteristic
• Characteristic for generator voltage
• Step response of motors
• Load-dependent step responses
• Automatic speed control using digital controllers
• Closed-loop control of generator voltage
• Steady-state control deviation using P-control
• Aperiodic and oscillating control response
• Determination of optimum operating point
• Control errors due to limiting of manipulated variable
• Effects of dead-time and saturation
• Automatic speed control using software controller
• Setpoint control
• Disturbance control