A salient-pole PMSM position and speed estimation at standstill and low speed by a simplified HF injection method

Slimane Medjmadj (1) , Demba Diallo (2) , Claude Delpha (3) , Yao Gang (4)

1 Université Mohamed El Bachir El Ibrahimi [Bordj Bou Arréridj]
2 GeePs - Laboratoire Génie électrique et électronique de Paris
3 L2S - Laboratoire des signaux et systèmes
4 Shanghai Maritime University

This paper addresses the estimation of a permanent magnet synchronous machine mechanical position and speed estimation at low speed and standstill. The method is based on the injection of an additive voltage at High Frequency (HF), which exploits the position dependency to the magnetic saliency. Unlike the usual HFI method, this estimator has a simple structure with only one filter. The simulation results prove the efficacy of the estimation under no load and with a load torque in the low speed region and at standstill. The mechanical position estimation errors are lower than 0.035rad (2°).

Keywords: Index Terms-Permanent-Magnet Synchronous Machine (PMSM); Sensorless control; High Frequency Signal Injection; Low speed

Domains: Engineering Sciences [physics]; Signal and Image processing

Slimane Medjmadj, Demba Diallo, Claude Delpha, Yao Gang. A salient-pole PMSM position and speed estimation at standstill and low speed by a simplified HF injection method. 43rd Annual Conference of the IEEE Industrial Electronics Society (IECON 2017), Oct 2017, Beijing, China. ⟨10.1109/iecon.2017.8217460⟩. ⟨hal-01578485⟩