This paper describes the development of a 20 kva Variable Frequency Motor Controller (VFMC) and its application to AC motor driven hydraulic pumps on aircraft. VFMC laboratory and iron bird testing has demonstrated: accommodation of variable frequency AC power (300-800Hz) to drive conventional fixed frequency induction motors, reduction of motor start inrush currents by 65 % via soft starts, and reduction of AC motor pump electrical power demand by as much as 62 % through power-on-demand control. As the VFMC transitions from technology demonstrator to flight qualified hardware topics such as power quality, thermal management, electromagnetic compatibility, and system reliability have become more prominent, and the paper addresses their impact on the future direction of the VFMC.
Use of a variable frequency motor controller to drive AC motor pumps on aircraft hydraulic systems
Anwendung einer frequenzvariablen Motorsteuerung um Wechselstrom-Motorpumpen für Flughydrauliksysteme zu steuern
1995
6 Seiten, 4 Bilder, 1 Tabelle, 4 Quellen
Conference paper
English
Variable frequency AC motor drive systems
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