Title :
Controlling voltage source converters with minimal energy storage
Author :
Lamsahel, H. ; Mutschler, P. ; Reddy, M.
Author_Institution :
Dept. of Power Electron. & Control of Drives, Darmstadt Univ. of Technol.
Abstract :
A predictive control method for the DC-link voltage of a voltage source converter (VSC) with active front end and minimal DC-link capacitor is proposed. The DC-link voltage is controlled by a state controller using a feed forward signal from the machine controller. The load machine is controlled with the field-oriented controller. By dynamic transient (sudden load change or line disturbance...) the linear controllers cannot keep fast the DC-link voltage inside a tolerable range. An additional predictive controller has been developed. It comes into operation when in the next modulation interval the predicted DC-Link voltage would exceed its limits. Simulation and experimental results demonstrate the feasibility of the proposed method
Keywords :
capacitor storage; feedforward; machine vector control; power capacitors; power convertors; predictive control; DC-link capacitor; dynamic transient; energy storage; feed forward signal; field-oriented controller; linear controllers; machine controller; predictive control method; voltage source converter control; Capacitance; Capacitors; Choppers; Converters; Diodes; Energy storage; Inverters; Power conversion; Rectifiers; Voltage control; Converter circuit; Energy system management; converter control; three phase system; vector control;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219199
