Electric Drives

This course is offered in German.

Learning objective:

Based on the fundamentals of electrical machines (assumed as previous knowledge!), this module provides application-oriented basic knowledge of variable-speed electrical drive systems.

Contents:

After successful completion of this module, the students can

• explain the structure of controlled electrical drive systems,
• describe typical loads and their steady-state characteristics,
• describe gearboxes, linear transmission ratios and other drive elements,
• derive the requirements for the electric drive from the drive task,
• explain the components and properties of variable-speed drives with DC, permanent magnet synchronous and induction machines,
• calculate the operating behaviour, load data and the operating limits of the abovementioned drive types for variable-speed operation,
• describe the structure and principle function of the power electronic actuators for the abovementioned drives,
• reproduce the structure of a cascade control for electric drives,
• describe different mechanical encoder systems for speed and position,
• calculate the thermal behaviour using simplified thermal models of the machine and power electronics in continuous and shorttime operation,
• select and assemble the appropriate components for a drive task on the basis of the qualitative and quantitative requirements.

Previous Knowledge:

Basics of electrical machines (DC machine, permanent magnet synchronous machine, induction machine) e.g. from the module Basics of Electromagnetical Power Conversion are an indispensable prerequisite for successfully completing the examination!