Power Circuits

Code
T.54737
Credits
3

The course Power Circuits gives an introduction in the basic power components that can be found in electric power systems, e.g. a power supply or E-Bike. In broad terms, the task of electric power systems is to process and control the flow of electric energy by supplying voltages and currents in a form that is optimally suited for the user loads. The power input to this system is usually (but not always) from the electric utility (grid), with a frequency of 50 Hz (or 60Hz). In this course the focus will be on the subsystems and components for a power application: a system connected to the mains utility (grid) for controlling the speed of a DC motor.

Test Form	Assessment (AS)

Test criteria

Covered topics in this course are: 1 AC power Instantaneous power, Average power, Real power P, Reactive power Q, Apparent power S, Power triangle, power factor, power factor correction. 2 Transformers Ideal transformers, Reflected load, Impedance matching, Multiple winding transformers, Real transformers (hysteresis, eddy currents, leakage flux, equivalent circuit, losses), efficiency. 3 Single phase Rectifiers (AC → DC) Power diodes, Half Wave rectifier, Full Wave rectifier, Full wave bridge rectifier, Ripple voltage, smoothing capacitor. 4 Controllable power switches MOSFET, Thermal considerations, Heatsink 5 Bridge DC → DC converters (DC → variable DC) Control of DC-DC converters, Half bridge DC-DC converter with inductive load, full bridge DC-DC converter with inductive load, Bipolar switching, Unipolar switching. 6 Brushed DC motor Working principle, Mechanical power, Electric equivalent, Electromagnetic torque, Motor with load (rotational), gearbox, braking, feedback mechanisms.