Advanced deep flux weakening operation control strategies for IPMSM

Abstract

This paper proposes an advanced flux-weakening control method to enlarge the speed range of interior permanent magnet synchronous motor (IPMSM). In the deep flux weakening (FW) region, the flux linkage decreases as the motor speed increases, increasing instability. Classic control methods will be unstable when operating in this area when changing load torque or reference speed is required. The paper proposes a hybrid control method to eliminate instability caused by voltage limit violation and improve the reference velocity-tracking efficiency when combining two classic control methods. Besides, the effective zone of IPMSM in the FW is analyzed and applied to enhance stability and efficiency following reference velocity. Simulation results demonstrate the strength and effectiveness of the proposed method.

Single current sensor based fault tolerant control of interior permanent magnet synchronous machine for drive applications

“…surface permanent magnet synchronous motor (SPMSM), IPMSM is preferred for its salient features such as high power density, high efficiency and better field weakening capability for constant power operation, which is a typical case for electric traction system [2]. IPMSM drive employs closed-loop control for high-performance vector control implementation, which in turn requires one position and at least two current sensors [3].…”

Improvised direct torque control of a permanent magnet synchronous motor

“…A variety of variables were changed in the optimal search method, including split ratio, tooth size, air gap, and magnet size, in order to improve the motor's performance. A deep flux lessening was performed in [33] to broaden the operating speed range of PMSM. A PMSM's wide-range control is implemented by combining vector current control and flux vector control.…”