Overview of control systems for three-phase voltage source inverters
Background and problem: Three-Phase voltage source inverters are the most popular rectifiers used in power engineering. Most photovoltaic converters, active front ends for motor and generator- or active Filter for power quality applications use such inverter topologies and have a lot of control strategies for their semiconductor devices. In general, three-phase voltage source inverters consists of three IGBT bridges and a large capacitor as an energy storage. In order to get desired gating signals for the IGBTs, there are many possibilities to operate the input voltages and currents.
Task: The task of this project is to give an overview of processing measurement signals (e.g. Phase Locked Loop – PLL), different reference frames (e.g. aß, dq), control of calculated signals (PID controller, hysteresis control, resonant control) and the realization of these controlled signals to gating signals for the IGBTs (e.g. PWM, Space vector modulation).
Supervisor: M.Sc. Benjamin Hoepfner