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This paper presents some results of an ultra-high-speed switched reluctance motor operating in an electric assisted turbocharger on a diesel engine. The motor controller operates without a shaft-mounted position sensor and work has been undertaken to tune the sensorless algorithm parameters and improve the control stability. A motor model has been developed to more accurately simulate the machine...
Full speed range sensorless control is usually faced with two different approaches: bemf- or flux-based reverse model for medium/high speed operation and high frequency (hf) voltage injection for zero/low speed operation. Both approaches require the knowledge of the current-to-flux behavior for gain tuning, error prediction/compensation, applicability evaluation of one or the other of the approaches...
In this paper a performance comparison of permanent magnet (PM) salient rotor topologies is conducted. The analysis has been carried out for a machine design case study where numerous design requirements need to be satisfied simultaneously. The requirements include: low speed, high torque, low-duty transient operation and zero-speed injection based sensorless control capability. The majority of work...
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