A Six-level SPWM Inverter for an Open-end Winding Induction Motor
نویسندگان
چکیده
A six-level inverter system for an open-end winding induction motor drive is presented in this paper. Multilevel inversion is achieved by feeding an open-end winding induction motor with a 3-level inverter from one end and a 2-level inverter from the other end of the motor. The 3level inverter used in the proposed drive, is realized by cascading two 2-level inverters. The combined inverter system with open-end winding induction motor produces voltage space phasor levels identical to a conventional 6-level inverter. In the multilevel carrier based sinusoidal pulse width modulation (spwm), used for the proposed drive, a progressive discrete DC bias depending upon the speed range is given to the reference wave so that the drive can operate in the k-level modes (k = 2, 3, ... 6) depending on the speed range. The inverter with the higher DC-link voltage is switching less frequently, compared to the inverter with the lower DC-link voltage.
منابع مشابه
A Multilevel Inverter System for an Induction Motor with Open-Ended Windings
The objective of this paper is to present a multilevel inverter topology for induction motor with open-end winding. Multi level inversion is achieved by feeding an open-end winding induction motor with a two-level inverter in cascade with three auxiliary circuits from one end and a single two-level inverter from the other end of the motor. The combined inverter and auxiliary system with open-en...
متن کاملSpace Vector Pwm Control of Dual Inverter Fed Open-end Winding Induction Motor Drive
scheme proposed here makes the individual inverter A space vector PWM technique is developed based switching frequency equal to half of the motor phase on the combination of space vectors from dual inverters switching frequency. %is results in low inverter switching feeding the induction motor from both ends (open-end with reduced power circuit complexity when compared to winding without neutra...
متن کاملCurrent Hormonic Analysis Of A Dual Two Level Inverter Fed Open - End Winding Induction Motor Drive Based On SVPWM Switching Stratagies
An open-end winding induction motor, fed by two 2-level inverters connected at either end produces space vector locations, identical to those of a conventional 3-level inverter. In this paper, two switching algorithms are proposed to implement space vector PWM for the dual inverter scheme. The proposed algorithms do not employ any look-up tables. The time consuming task of sector identification...
متن کاملIncreasing the Efficiency of the Power Electronic Converter for a Proposed Dual Stator Winding Squirrel-Cage Induction Motor Drive Using a Five-Leg Inverter at Low Speeds
A dual stator winding squirrel-cage induction motor (DSWIM) is a brushless single-frame induction motor that contains a stator with two isolated three-phase windings wound with dissimilar numbers of poles. Each stator winding is fed by an independent three-phase inverter. The appropriate efficiency of this motor is obtained when the ratio of two frequencies feeding the machine is equal to the r...
متن کاملA Novel PWM Inverter Switching Strategy for a Dual Two - level Inverter Fed Open - end Winding Induction Motor Drive
Absrracl--A dual two-level inverter fed open-end winding induction motor drive is proposed in this paper. A total of 64 voltage space phasor combinations are possible in this scheme as each inverter produces eight voltage space phasors. The proposed scheme produces voltage space phasor locations similar to that of a 3-level inverter. In a 3-level Inverter the series connected DC link capacitors...
متن کامل