Windowed PWM: A Configurable Modulation Scheme for Modular Multilevel Converter-Based Traction Drives

Simone, Davide De; Tricoli, Pietro; D’Arco, Salvatore; Piegari, Luigi

doi:10.1109/tpel.2020.2969375

Cited by 24 publications

(9 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The novel bypass-embedded concept proposed in this work is not restricted for the PD-PWM, but could easily branch out into other PWM techniques and inform future research directions and optimisation opportunities both numerically and experimentally [8]- [33], notably the state-ofthe-art windowed PWM [33] for traction drives.…”

Section: Optimisation Results and Analysismentioning

confidence: 99%

Design and Control Optimisation of a Novel Bypass-embedded Multilevel Multicell Inverter for Hybrid Electric Vehicle Drives

2020

2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

View full text Add to dashboard Cite

A novel bypass-embedded multilevel multicell inverter is proposed with manipulation of bidirectional flow of currents targeting electric motor drives and regenerative braking (battery recharging) for hybrid electric vehicles. To balance switching losses, maximise DC supply utilisations, balance the state of charge, and minimise total harmonic distortions, the inverter control method is optimised by incorporating phase disposition PWM with variable carrier frequency, third harmonic injection, as well as carrier reordering and reduction schemes. The proposed control scheme is investigated on an 11-level inverter for motor drives of a parallel hybrid electric vehicle with regenerative braking capability. The total harmonic distortion is 1.23% for line voltage, and 1.04% for stator current without filtering networks, i.e. a comparable performance to the states of the arts.

show abstract

Section: Optimisation Results and Analysismentioning

confidence: 99%

Design and Control Optimisation of a Novel Bypass-embedded Multilevel Multicell Inverter for Hybrid Electric Vehicle Drives

2020

2020 IEEE 11th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

View full text Add to dashboard Cite

show abstract

“…Proper choice of the carrier sequence can furthermore exploit the opportunities of the parallel mode for charge balancing across modules as well as to reduce conduction loss [150,152]. Other modulation techniques are possible and described in the literature but are designed for the typically notably slower switching rates and output bandwidth (typically < 1,000 Hz) as common in power conversion applications and therefore often generate a substantially higher computational burden or lower-frequency distortion [153][154][155][156][157][158][159].…”

Section: + +mentioning

confidence: 99%

Transcranial Magnetic Stimulation Tech-nology with Freely Adjustable Pulse Shape and Sequence

Li¹,

Zhang²,

Peterchev³

et al. 2023

Preprint

View full text Add to dashboard Cite

The temporal shape of a pulse in transcranial magnetic stimulation (TMS) influences which neuron populations are activated preferentially as well as the strength and even direction of neuromodulation effects. Furthermore, various pulse shapes differ in their efﬁciency, coil heating, sensory perception, and clicking sound. However, the available TMS pulse shape repertoire is still very limited to a few biphasic, monophasic, and polyphasic pulses with sinusoidal or near-rectangular shapes. Monophasic pulses, though found to be more selective and stronger in neuromodulation, are generated inefﬁciently and therefore only available in simple low-frequency repetitive protocols. Despite a strong interest to exploit the temporal effects of TMS pulse shapes and pulse sequences, waveform control is relatively inflexible and only possible parametrically within certain limits. Previously proposed approaches for flexible pulse shape control, such as through power electronic inverters, have signiﬁcant limitations: The semiconductor switches can fail under the immense electrical stress associated with free pulse shaping, and most conventional power inverter topologies are incapable of generating smooth electric ﬁelds or existing pulse shapes. Leveraging intensive preliminary work on modular power electronics, we present a modular pulse synthesizer (MPS) technology that can, for the ﬁrst time, flexibly generate high-power TMS pulses (one-side peak ~ 4,000 V, ~ 8,000 A) with user-deﬁned electric ﬁeld shape as well as rapid sequences of pulses with high output quality. The circuit topology breaks the problem of simultaneous high power and switching speed into smaller, manageable portions, distributed across several identical modules. In consequence, MPS TMS can use semiconductor devices with voltage and current ratings lower than the overall pulse voltage and distribute the overall switching of several hundred kilohertz among multiple transistors. MPS TMS can synthesize practically any pulse shape, including conventional ones, with ﬁne quantization of the induced electric ﬁeld (≤ 17% granularity without modulation and ~300 kHz bandwidth). Moreover, the technology allows optional symmetric differential coil driving so that the average electric potential of the coil, in contrast to conventional TMS devices, stays constant to prevent capacitive artifacts in sensitive recording ampliﬁers, such as electroencephalography (EEG). MPS TMS can enable the optimization of stimulation paradigms for more sophisticated probing of brain function as well as stronger and more selective neuromodulation, further expanding the parameter space available to users.

show abstract

“…Some modifications and improvements have been applied to the NLM method. In [115] a modulation technique called windowed pulse width modulation (WPWM) is proposed for traction drives. The idea behind this scheme is to combine NLM and PWM in order to take advantage of low switching loss of NLM and good This work is licensed under a Creative Commons Attribution 4.0 License.…”

Section: E Nearest Level Modulation and Windowed Pulse Width Modulationmentioning

confidence: 99%

A Review of Modulation and Control Techniques for Multilevel Inverters in Traction Applications

2021

View full text Add to dashboard Cite

Traction inverter has been the subject of many studies due to its essential role in the proper performance of the drive system. With the recent trend in increasing the input voltage in battery-powered electric vehicles, multilevel inverters have been proposed in the literature as a promising substitute for conventional twolevel traction inverters. A critical aspect of utilizing multilevel structures is employing proper control and modulation techniques. The control system structure must be capable of handling a number of key issues, like capacitor voltage balancing and equal power loss sharing, which arise in multilevel topologies. This paper presents a review of the present-day traction drive systems in the industry, control and modulation techniques for multilevel structures in the inverters, as well as the principal challenges that need to be addressed in the control stage of the multilevel traction inverter. A comparison has been made between different methods based on the most important criteria and requirements of the traction drive system. Finally, future trends in this application are presented and some suggestions have been made for the next generation of traction drives.

show abstract

Windowed PWM: A Configurable Modulation Scheme for Modular Multilevel Converter-Based Traction Drives

Cited by 24 publications

References 25 publications

Design and Control Optimisation of a Novel Bypass-embedded Multilevel Multicell Inverter for Hybrid Electric Vehicle Drives

Design and Control Optimisation of a Novel Bypass-embedded Multilevel Multicell Inverter for Hybrid Electric Vehicle Drives

Transcranial Magnetic Stimulation Tech-nology with Freely Adjustable Pulse Shape and Sequence

A Review of Modulation and Control Techniques for Multilevel Inverters in Traction Applications

Contact Info

Product

Resources

About