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13 - Electrical and Electronic Engineering, Metallurgy and Materials
University of Strathclyde
Compensation of inverter nonlinear distortion effects for signal-injection-based sensorless control
This paper describes a simple, accurate method for modelling voltage distortion introduced by power semiconductor device switching action. The method uses only readily available datasheet parameters and avoids complex modelling techniques. The results have been applied to the sensorless control of a permanent magnet aeronautical actuator, in a work-programme supported by Goodrich Corporation University Technology Centre (UTC) [£130k p.a., 2009-present, Parminder.Sangha@goodrich.com], improving performance in a safety-critical application and enabling improved torque output at zero and low speed. The method is applicable to any power electronic switching circuit, offering accurate voltage control and improved harmonic performance.