Analysis of Current-Feedback PWM Procedures Based on Hysteresis and Current-Carrier-Wave Control for VSI-Fed Induction Motor Drive

Szabó, Csaba; Szoke, E.; Szekely, Norbert Csaba; Zacharias, Vlad; Imecs, Mária

doi:10.1109/acemp-optim44294.2019.9007206

Cited by 4 publications

(1 citation statement)

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“…Among them, the SPWM method generates the inverter switching signals by comparing the modulating signals with a common triangular carrier wave, in which the intersection points determine the switching points of the inverter power devices [12,13]. The hysteresis PWM method controls the inverter output currents to track the reference inputs within the hysteresis band, but with various switching frequencies [14,15]. The SVPWM method is based on the concept of voltage vector space, which can be divided into six sectors, and calculates the switch dwelling or firing time in each sector to generate the PWM signals .…”

Section: Introductionmentioning

confidence: 99%

Implementation of an FPGA-Based Current Control and SVPWM ASIC with Asymmetric Five-Segment Switching Scheme for AC Motor Drives

2021

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This paper presents the design and implementation of an application-specific integrated circuit (ASIC) for a discrete-time current control and space-vector pulse-width modulation (SVPWM) with asymmetric five-segment switching scheme for AC motor drives. As compared to a conventional three-phase symmetric seven-segment switching SVPWM scheme, the proposed method involves five-segment two-phase switching in each switching period, so the inverter switching times and power loss can be reduced by 33%. In addition, the produced PWM signal is asymmetric with respect to the center-symmetric triangular carrier wave, and the voltage command signal from the discrete-time current control output can be given in each half period of the PWM switching time interval, hence increasing the system bandwidth and allowing the motor drive system with better dynamic response. For the verification of the proposed SVPWM modulation scheme, the current control function in the stationary reference frame is also included in the design of the ASIC. The design is firstly verified by using PSIM simulation tool. Then, a DE0-nano field programmable gate array (FPGA) control board is employed to drive a 300W permanent-magnet synchronous motor (PMSM) for the experimental verification of the ASIC.

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