An electro-hydrostatic aircraft actuator using a matrix converter permanent magnet motor drive

In this paper the design, construction and testing of a matrix converter permanent magnet motor drive for an electro-hydrostatic aircraft actuator (EHA) is described. The converter has been built using a 35 Amp matrix converter module with closed loop vector control of the permanent magnet machine. The permanent magnet machine then drives a pump, which in turn moves the actuator. Practical results from the testing of this converter are presented.