دانلود رایگان مقاله انگلیسی

New Optimal Pulsewidth Modulation for Single DC-Link Dual Inverter fed Open-end Stator Winding Induction Motor Drive

سال انتشار : 2015

نوع مقاله : IEEE JOURNALS & MAGAZIENS

تعداد صفحات : 8

Abstract—The multilevel topology with dual inverters feeding

both ends of an open-end stator winding of an induction motor

has been introduced around two decades ago. A common-mode

inductor is usually required in series with motor windings

to suppress zero-sequence or common-mode currents. In case

of medium voltage high power drives, low device switching

frequency operation is preferred to improve the overall system

efficiency. However, it increases the harmonic distortion

of machine stator currents. Therefore, the goal of our study

is to propose new optimal pulsewidth modulation to achieve:

low device switching frequency, minimal harmonic distortion

of machine stator currents and elimination of zero-sequence

currents. The main idea is to select the switching angles of two

inverters such that zero-sequence components are eliminated and

then perform optimization to determine switching angles that

minimize the harmonic distortion of machine stator currents.

The experimental results obtained from dual two-level and dual

three-level inverter fed 1.5-kW open-end stator winding IM drive

demonstrated the effectiveness of proposed modulation technique.

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