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Open-end winding variable speed drives with dual-inverter supply have been extensively investigated for various applications, including series hybrid powertrains and propulsion motors. The topology is simple to realise while offering a higher number of switching states without the need for capacitor balancing algorithms, when compared to standard multilevel converters. The existing body of work is...
This paper presents generalized interleaved Discontinuous Space Vector PWM (DSVPWM) schemes for 3-level 3-phase 6-switch split-wound Coupled Inductor Inverters (CII). A simplified approach is applied to the generation of interleaved DSVPWM schemes with the need to minimize high frequency current ripple and associated losses in the coupled inductor and the inverter. The performance of the CII is investigated...
A multilevel interleaved discontinuous space-vector pulsewidth modulation (DSVPWM) method is presented for a three-level three-phase pulsewidth modulation (PWM) voltage source inverter using a three-phase split-wound coupled inductor. The selection of a suitable PWM switching scheme for this topology is based on the dual requirements for a high-quality multilevel PWM output voltage, together with...
This paper proposes a new five-level inverter topology for open-end winding induction motor (IM) drive. The popular existing circuit configurations for five-level inverter include the NPC inverter and flying capacitor topologies. Compared to the NPC inverter, the proposed topology eliminates eighteen clamping diodes having different voltage ratings in the present circuit. Moreover it requires only...
In this paper, a new scheme for three-level voltage space vector generation is proposed. In this work, the three-level inverter topology is realized by feeding an open winding induction motor with two two-level inverters, fed from a single dc source having the magnitude half compared to the NPC three-level inverter. Compared to existing three-level inverter topologies for open-end winding induction...
A novel half-bridge switching topology is presented which is based on using a split-wound series-connected coupled- winding inductor, interleaved switching, and zero-deadtime operation to achieve multi-level PWM output with a reduced part-count, reduced current ripple, and improved THD performance. This new topology is presented to highlight the design process for low power, high switching frequency...
The number of voltage levels available in PWM voltage source inverters can be increased by using a split-wound coupled inductor within each inverter-leg and using interleaved PWM switching of the upper and lower switches. The magnetizing inductance of the symmetrical split wound inductor filter the high frequency PWM voltage differences between the upper and lower switches. The same inductor presents...
A novel dual secondary winding and dual power bridge high frequency link (HLF) inverter is discussed in this paper. Single-stage power conversion, standard half-bridge connection of devices, soft-switching for all the power devices (ZVS or ZCS), low conduction loss, simple bipolar combined phase-shifted control, and high efficiency are among the salient features of the HLF inverter. The principles...
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