Switch‐mode rectifier fed switched‐reluctance motor drive with dynamic commutation shifting using DC‐link current

Abstract

Adequate commutation instant setting and tuning in accordance with varied operating conditions are required for achieving good winding current and developed torque responses for a switched-reluctance motor (SRM) drive. This study presents a dynamic commutation shift controller (DCSC) based on DC-link current ripple minimisation for SRM drives. A single-phase bridgeless switch-mode rectifier (SMR) fed SRM drive is established for making the performance evaluation. The robust control schemes of the SMR and SRM drive are properly designed to yield satisfactory dynamic and static operation characteristics. The boosted and well-regulated DC-link voltage is established from the mains to enhance the SRM drive performance under high speeds. In addition, good line drawn power quality with high efficiency is obtained simultaneously by the bridgeless SMR front-end. In the developed DCSC, the observed DC-link ripple current is processed and used to determine the commutation shift angle automatically. Some measured results are provided to demonstrate the performance of the established SMR-fed SRM drive under the commutation using the proposed DCSC.

A Methodology to Determine the Effect of a Novel Modulation in the Reliability of an Automotive DC-Link Capacitor

“…12). 3) Then, each region is represented as an operation point (P i ,∀ i ∈ [1,22]) and their mean torque T wheelmean and mean speed ω wheelmean are calculated (see Fig. 11-3 ).…”

“…A way to reduce the DClink current with no changes in either the converter or the machine is by means of the control, e.g. just as is done in [20], [21] or [22]. Nonetheless, these proposals use FEM non-linear magnetic models (not considering the degradation or construction errors) or/and need a large computational capability.…”

Torque Ripple Minimization in Switch Reluctance Motor Drives: an ANFACO Based Control

“…The accumulated strength of the pheromone on edge is initialized as  (j, k). The distance between the each pair of node j and k is represented as [22], (6) Where i = 1,2,…, M randomly selected from the feasible region.…”

“…For such application, the study of Switched Reluctance Motor Drives (SRMDs) has done a more interest [2,3]. SRMDs are used in household applications, hybrid and electric vehicles, wind power plant, aeronautical and aircraft applications, etc., The advantages of SRMDs are simple structure, less cost for manufacturing and reliability capability, high degree of self determination between phases, short end-turn, low inertia and operate in hard environment [4,5]. Generally, SRMD is a doubly salient pole machine, and mainly based on the concept of variable reluctance.…”

“…The phases are energized over the entire region of rising inductance and the active current limiting from the controller at low speeds. SRMDs are only depending on the variation of inductance is rising or falling due to angular position (non-linear) but it does not dependent on the direction of the current [6,7]. So, for an optimal excitation sequence, the control structure requires rotor position.…”