A Canonical Switching Cell (CSC) Converter Based Power Factor Corrected Battery Charger for E-Rickshaw

Modern days e-rickshaw’s are becoming exceedingly popular due reduction of manual work, cost-effectiveness and as an alternate to traditional petroleum fuel based rickshaws. Low cost battery chargers used to charge these e-rickshaws have a power rating of 500W–700W and are non power factor corrected. Therefore, in this paper, a canonical switching cell (CSC) based power factor corrected (PFC)off-board charger is proposed. The CSC converter improves the power quality and output voltage ripple of traditional e-rickshaw battery charger. The two stage battery charger uses a CSC converter for shaping the input current and an isolated DC-DC converter regulates the charging current and voltage of an e-rickshaw battery. The CSC converter operates under continuous inductor conduction mode (CICM) to realise power factor correction (PFC) and DC-DC converter stage is based on half bridge (HB) converter controlled by pulse width control (PWM). Moreover, modeling of CSC converter in state space is presented and a 600W,10A e-rickshaw battery charger prototype is developed and its performance is thoroughly evaluated.