Abstract
A high-performance electric motorcycle (HPEM) integrated charger-inverter (ICI) with an induction motor (IM) is proposed in this article. Typical components are shared in drive and charge modes, resulting in savings of weight, volume, and cost. A two-stage ICI for AC induction motor powertrain with power factor correction (PFC) and battery charger functions is considered. Despite high voltage ripple on the DC link, a high bandwidth nonlinear controller can reject such a drawback and adequately provide a constant current or constant voltage charging process. The simulation results of 7 kW ICI are provided to validate the effectiveness and feasibility of the proposed system. Finite element analysis (FEA) determines the torque and losses of IM in charging mode.
Highlights
In electric vehicles (EVs) application, driving range is one of most important criteria determining whether people will buy an EV
Very few high-performance electric vehicles (HPEVs) have DC charging capability, they are less practical in countries where bulky and expensive DC charging stations are not well covered [3]
PBat × VBus where fgrid is the grid frequency; ∆VBus is the peak-to-peak ripple voltage around the desired output voltage VBus, e.g., ∆VBus = 25%, according to the parameters given in Table 1; and CBus has a minimum of 557 μF for PBat = 7 kW power requirement compared with 400–600 μF found in conventional OEM HEV/EV 100 kW inverters without an integrated charger-inverter (ICI) feature
Summary
In electric vehicles (EVs) application, driving range is one of most important criteria determining whether people will buy an EV. With the active filter to absorb the double grid frequency ripple, the dc-link capacitor, inductor, and capacitor of the quasi-Z-source converter can be reduced to gain a low weight and volume benefit. Finite element results are used to validate the average torque of PMSMs [18] Such an analysis is rare for IMs. This work focuses on a 7 kW ICI for HPEM. Six power switches from a three-phase full-bridge inverter and IM’s phase windings are reconfigured and reused as a line filter, as well as a single-phase bridgeless rectifier with power factor correction (PFC) and a bi-directional buck-boost converter for the battery charger. It is a conventional three-phase full bridge inverter.
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