Tom Wanjekeche, Dan V. Nicolae, and Adisa A. Jimoh
3-5-9 Cascaded hybrid inverter, DC link voltage balance, phaseshifted PWM control
The paper presents a novel phase shifted SPWM control scheme for cascading two cells to form a “3-5-9 hybrid inverter with improved harmonic suppression. Modeling of the hybrid inverter from first principle is introduced and a standard control law is derived for further analysis and development of the model. A new balance circuit for DC link voltage control is designed and tested. Combined with individual voltage control, a complete control scheme is developed. Detailed MATLAB simulation and experimental results are obtained for further validation of the adopted topology and the control scheme.
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