Design and Experimental Verification of Adaptive Speed Region Control for Hybrid Excitation Claw-Pole Synchronous Machine

Abstract

With combining the advantages of the hybrid excited synchronous machine and claw pole machine, hybrid excitation claw-pole synchronous machine (HECPSM) exhibits merits of controllable flux operation and independent flux paths. One novel wide range adaptive speed region control strategy is proposed in this paper, based on the analysis of the field control capability of HECPSM and the space vector control. Independent control methods of maximum torque per ampere (MTPA), space vector and minimum copper loss (MCL) control were employed for the proposed machine during three different speed regions in order to obtain satisfied performance in the whole speed range. The correctness and effectiveness of the proposed adaptive speed region control strategy and drive system design were verified by simulation and experimental results, which demonstrated that the proposed control strategy maximized the range of speed regulation while exhibiting the high efficiency.

A Comprehensive Optimization Control Method for Hybrid Excitation Synchronous Motor

“…In addition, by combining ( 3) and ( 21) and using an iteration method [13], we may find all the current reference values i dref , i qref , and i fref leading to the minimization of the copper loss by the motor.…”

“…For the hidden pole or the approximate hidden pole of the HESM, the authors of [8,13] have proposed a vector control method based on the d-axis current i d � 0 combined with the copper loss minimization control strategy to optimize the motor efficiency. e disadvantage of the method is that, during the flux-weakening regulation, when the motor is operating at high speed, the flux-weakening effect on the d-axis current is not fully exploited, resulting in a limitation of the available motor speed range.…”

“…e shortcoming here is that, during the flux-weakening, the base-speed coefficient is constant and cannot maintain the optimal working point when the motor operating state changes. e flux-weakening method may be also applied while keeping constant the back electromotive force (back EMF) [13], and this makes the motor able to show a satisfactory operating performance, though the stability problem of [12] is not solved.…”

Flux Weakening Control and Experimental Verification of Hybrid Excitation Field Modulation Synchronous Machine for Direct Drive Propulsion

“…C ompared with conventional permanent magnet synchronous machine (PMSM) and reluctance machine for the application of industrial fields [1][2][3], hybrid excitation synchronous machine (HESM) is one promising candidate due to the feature of wide range speed regulation operation by adjusting the excitation current and d-axis current, especially for wind power generation, electric vehicles (EVs), hybrid EVs and other direct drive systems [4][5][6][7]. In recent years, several different potential solutions of HESMs exhibiting the field modulation topology [8][9][10][11][12], namely, hybrid excitation field modulation machine (HEFMM), has been become the key research subject since it incorporates the merits of HESM and unique magnetic field modulation principle.…”