A new approach for selecting the switching states of SVPWM algorithm in multilevel inverter

Abstract

SUMMARYThis paper presents a fast and real-time space vector pulse width modulation (SVPWM) algorithm for multilevel inverters. A min.-max. method for selecting switching states is proposed for SVPWM algorithm. With the proposed method, the minimum switching commutation transition of between the triangles on the space vector diagram of the reference voltage vector is provided. The proposed SVPWM algorithm is also rather suitable for all values of linear modulation range and provides simplicity and applicability. Using this SVPWM algorithm, threephase voltages have been obtained from a five-level cascade inverter. These voltages are applied to a three-phase ac motor. The simulation results are verified by the experimental results.

Precise Loss Calculation in Cascaded Multilevel Inverters

“…In this paper, we follow the new proposed algorithm introduced in [4] for selecting vector of switching states in every triangle. This algorithm is based on selection of only maximum and minimum states of adjacent vectors which provides minimum switching commutations.…”

“…Space vector PWM waveforms have some advantages such as ease of digital control and switching waveform optimization [4]. From Fig.3 and 4, SVM identifies each switching state as a point in complex (α,β) space.…”

Çok Sevi̇yeli̇ Evi̇ri̇ci̇ Beslemeli̇ Asenkron Motor İçi̇n Yüksek Performansli Vektör Deneti̇m Strateji̇si̇

“…Bu anahtarlama durumlarının hepsinde çıkış geriliminin fazı ve genliği aynı olmaktadır. Bir (g,h) uzay vektörü için toplam anahtarlama durumlarının sayısı aşağıdaki bağıntı yardımıyla hesaplanabilir [23].…”

“…Bu makalede, anahtarlama durumlarının seçimi için [23]'de verilen min-max metodu kullanılmıştır. Bu metot ile referans gerilim vektörünün bir üçgenden diğerine geçişinde minimum anahtarlama geçişi elde edilmektedir.…”

Selective harmonic elimination in hybrid cascaded multilevel inverter using modified whale optimization

“…In general, the conventional MLIs are categorized into diode-clamped MLI, 3 flying capacitor MLI, 4 and cascade H-bridge MLI (CHB-MLI) topologies. [6][7][8][9][10] Among these topologies, CHB-MLIs have more popular because of their modular structures. CHB-MLIs find applications in active filters, motor drives, electric vehicle drives, and power factor compensation to name a few.…”