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This paper presents an innovative torque control strategy for a switched reluctance machine (SRM) operating in continuous-conduction mode (CCM). The proposed strategy was first designed to control the torque in discontinuous-conduction mode and then extended to operate in CCM as well. With CCM, the torque can be increased at high speed without modifying the number of turns, the source voltage, or...
This paper proposes a novel digital hardware control of motor drive system implemented in FPGA (field programmable gate array) not only a current control loop but also a speed control loop. In addition, to decrease a torque ripple caused by a PWM switching, linear servo amplifiers are employed for the driving source. As the results of using hard ware control, high precision speed control system of...
Much attention has been recently drawn towards switched reluctance machine (SRM) based vehicle propulsion systems. This is especially due to the excellent extended speed features of SRMs for electric/hybrid electric vehicle propulsion applications. However, the inherently large torque ripple and highly nonlinear characteristics of SRMs present significant challenges from the controller design standpoint...
Presented in this paper are the results of tests involving high-speed closed-loop control of a virtual permanent magnet synchronous motor (PMSM) drive implemented on a field-programmable gate array (FPGA) card, connected to an external controller. Three types of motor drive models are actually implemented on the FPGA card of the RT-LAB based real-time simulator used: a Park (d-q) model along with...
In this paper, for improving the control system of some bio-chemistry analysis instrument, an approach of micro-stepping control for the step motors based on field programmable gate array (FPGA) is presented after the micro-stepping driving theory of the step motor with a constant torque was discussed deeply. And then the relative control system is schematically designed, mainly includes the internal...
This paper describes design of a reusable motor control peripheral for system on chip applications. It integrates previously carried out work on motor speed sensing, current monitoring and generation of power device triggering signals. The idea of creating a customized PMAC (permanent magnet AC ) motor control peripheral, which can connect to a standard chip wide bus is presented. Since a peripheral...
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