Space vector modulation of multilevel inverters with online vector identification and reduced switching losses for HEV/EV applications
by Scott Cash; Quan Zhou; Oluremi Olatunbosun; Hongming Xu
International Journal of Power Electronics (IJPELEC), Vol. 14, No. 3, 2021

Abstract: Multilevel inverters are used in a wide range of medium-high power applications including hybrid and electric vehicles (HEV/EV). This paper investigates an online reduced intermediate switching space vector pulse width modulation (RIS-SVPWM) scheme to minimise switching losses without the need for large lookup tables or severely diminishing output harmonic quality. While previous online methods only calculate the switching patterns of a single enclosing voltage vector, this RIS-SVPWM method calculates all the switching patterns surrounding the reference voltage by incorporating only two more additional mapping iterations into the online algorithm regardless of the inverter level. The RIS-SVPWM method can operate in the sinusoidal, overmodulation mode-I and overmodulation mode-II regions of various inverter voltage levels and topologies. The performance of the RIS-SVPWM algorithm is examined over the entire driving range of an HEV/EV by controlling a MATLAB/Simulink model of a three-phase five-level cascade H-bridge inverter powering an induction motor model. The results of the simulation study show that there is a reduction in intermediate switching by up to 90% and a total switching reduction by 30% over a previous online SVPWM algorithm while maintaining acceptable voltage and current waveform harmonic quality.

Online publication date: Mon, 13-Sep-2021

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Power Electronics (IJPELEC):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com