A New Doubly Salient Permanent Magnet Motor for Adjustable Speed Drives

Automotive Electric Propulsion Systems With Reduced or No Permanent Magnets: An Overview

“…• Section III: induction machines (IMs) with copper cage rotors [9], [10], [12], [15]; • Section IV: switched reluctance motors (SRMs) with standard tooth-wound three-phase windings [16]- [19] and diametrical-coil double-stator segmented-rotor four-phase windings [20]; • Section V-A: ferrite PM-assisted synchronous reluctance machines [21], [22] with PM demagnetization and a novel biaxial excitation generator for automobiles (BEGA) [23]; • Section V-B: claw pole machine without or with ferrite interior PM (IPM) in the rotor [24]- [26]; • Section V-C: brushless dc (BLDC) multiple-phase reluctance machines (BLDC-MRM) [27]- [29]; • Section V-D: double-saliency multiple-phase reluctance machine with dc-ac stator windings [30], [31]; • Section V-E: ferrite-stator-PM dual-saliency switched-flux machines [32] or ferrite rotor dual-saliency switched-flux machines [33]; • Section V-F: the standard dc-excited synchronous machine [34], [35]. As already stated, a discussion is put forward for these machine topologies within the context of HEVs and EVs.…”

“…In a similar manner, the performance of surface magnet fractionalslot machines was addressed in [91] in terms of the amount of magnet used; this is of great interest to the automotive industry. In [33], ferrite magnets were considered in a more novel machine. These are cheaper, and if weaker magnetization is to be assessed at higher speed, then ferrite magnets could be utilized.…”

Multi-mode operations of DC-excited memory motors under flux regulation

“…However, it suffers from low efficiency and low power density, which limit its widespread applications. By integrating the permanent magnets (PMs) into the SR motor, the doubly-salient PM (DSPM) motor has been proposed and developed for more than a decade [3][4][5][6][7][8], which not only inherits the advantages of simplicity and high reliability from the SR motor, but also offers high efficiency and high power density as the PM motor [9,10]. However, because of the fixed excitation from PMs, the DSPM motor still cannot offer the controllable air-gap flux.…”

A novel maximum power point tracking control method suitable for a doubly salient electro-magnetic wind power generator system

“…As a result, it has such advantages as simple structure, low cost, high reliability, etc; especially in the operation of high power and low speed. The small excitation power and the high controllability of the motor make it easy to control the rotational speed of the turbine [5]- [12]. Meanwhile, the high efficiency of the motor makes it very suitable for DC output and direct-driven non-grid-connected wind power.…”