Six-phase Voltage Forming Method using the Largest Magnitude Space Vectors

Abstract

In this paper, a six-phase voltage source inverter with a single-neutral star connected load is investigated. A space vector PWM (SVPWM), which uses largest magnitude vectors is proposed and implemented. Simulation results of the six-phase voltage source inverter (VSI), which uses the proposed SVPWM method, are compared to the results when a standard sinusoidal PWM scheme is used. Analysis of the results shows that proposed SVPWM scheme is suitable to form a six-phase sinusoidal output voltage. The main advantage of proposed SVPWM scheme is that it requires the same computational resources as the three-phase SVPWM.

Neraiškiąja logika grįstas šešiafazių asinchroninių pavarų valdymas

“…disturbance observer), panaikina daugiau nei 99 % nepageidaujamų harmonikų normaliojo darbo režimo metu. Lietuvoje vystyta statoriaus srovių harmonikų tyrimai, kai taikomi erdvinio vektoriaus moduliavimo metodai (Baškys et al 2011;Lipinskis 2014;Lipinskis 2013;Lipinskis et al 2014;Lipinskis et al 2013;Lipinskis, Bleizgys 2016;Lipinskis, Zlosnikas 2015).…”

True Six-Phase Space Vector Modulation Scheme with Reduced Low Order Harmonics

“…In this paper, a six-phase VSI with a load, with a single neutral point presented in Fig. 1 [6] is considered. The switching function for this type of system can be defined as 1 i m  (where  i a, b, c, d, e, f) when the inverter's upper switch is on, and lower switch is off, and 0  i m when inverter switch states are inverted respectively.…”

“…There are 64 inverter switch combinations in total, which correspond to 64 space vectors. To acquire space vector diagrams for a six-phase VSI, it is needed to transform all the phase voltages in all possible inverter switch combinations with Clarke's transformation matrix [6]:…”

Šešiafazių asinchroninių variklių pereinamųjų vyksmų tyrimas

“…Į skaliarinio valdymo sistemas įeinančių inverterių, kurie nuolatinę įtampą keičia į šešiafazę kintamą įtampą, modeliai kuriami Lietuvoje ir užsienyje (Lipinskis, et al, 2013;Lipinskis, 2013;Miranda, et al, 2009;Lipo, 1980;Oleschuk, et al, 2011;Nanoty, et al, 2012;Jones, et al, 2005).…”