Title :
Performance comparison of output power estimators used in AC/DC/AC converters
Author :
Uhrin, R. ; Profumo, F.
Author_Institution :
Dipartimento di Ingegneria Elettrica Ind., Politecnico di Torino, Italy
Abstract :
In the paper various methods of power estimation used in AC/DC/AC converters are compared. To maintain constant DC bus voltage using only small electrolytic capacitors which is one of the design targets in these systems, the input bridge reference currents must be generated on the basis of the system power flow. Since this method is not sufficient for tight regulation, an inner DC bus voltage control loop is usually added. The design procedure of the DC bus voltage regulator is also presented. The performance of three estimation methods is compared in terms of DC bus voltage fluctuation in dynamic conditions for a 15 kW AC/DC/AC converter
Keywords :
AC-DC power convertors; DC-AC power convertors; bridge circuits; electrolytic capacitors; voltage control; voltage regulators; 15 kW; AC/DC/AC converters; DC bus voltage; DC bus voltage fluctuation; DC bus voltage regulator; dynamic conditions; electrolytic capacitors; inner DC bus voltage control loop; input bridge reference currents; output power estimators; power flow; Analog-digital conversion; Bridge circuits; Capacitors; Costs; DC generators; Load flow; Power generation; Regulators; Switching converters; Voltage control;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397800
