Modulation strategy for highly reliable cascade H-Bridge inverter based on discontinuous PWM

Ko, Youngjong; Andresen, Markus; Buticchi, Giampaolo; Lee, June-Seok; Liserre, Marco

doi:10.1109/apec.2017.7931161

Cited by 9 publications

(2 citation statements)

References 23 publications

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“…In [187], via applying carrier-based modulation and redundant switching states, thermal stress can be reduced while healthy semiconductors will not experience more stress and pressure. In [188,189], by utilizing discontinuous modulation (DPWM), switching losses are decreased, and thus, thermal stress can be controlled. In [190], by switching between space vector pulse width modulation (SVPWM) and DPWM strategies in addition to manipulating switching frequency, power dissipation and consequently thermal stress are reduced.…”

Section: Modulation Strategymentioning

confidence: 99%

A Review of DC Fast Chargers with BESS for Electric Vehicles: Topology, Battery, Reliability Oriented Control and Cooling Perspectives

et al. 2023

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The global promotion of electric vehicles (EVs) through various incentives has led to a significant increase in their sales. However, the prolonged charging duration remains a significant hindrance to the widespread adoption of these vehicles and the broader electrification of transportation. While DC-fast chargers have the potential to significantly reduce charging time, they also result in high power demands on the grid, which can lead to power quality issues and congestion. One solution to this problem is the integration of a battery energy storage system (BESS) to decrease peak power demand on the grid. This paper presents a review of the state-of-the-art use of DC-fast chargers coupled with a BESS. The focus of the paper is on industrial charger architectures and topologies. Additionally, this paper presents various reliability-oriented design methods, prognostic health monitoring techniques, and low-level/system-level control methods. Special emphasis is placed on strategies that can increase the lifetime of these systems. Finally, the paper concludes by discussing various cooling methods for power electronics and stationary/EV batteries.

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Section: Modulation Strategymentioning

confidence: 99%

A Review of DC Fast Chargers with BESS for Electric Vehicles: Topology, Battery, Reliability Oriented Control and Cooling Perspectives

et al. 2023

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“…1(a) Fig. 1(b [24]. Here, the subscript ns means nonswitching and the subscript s represents switching.…”

Section: A Motivation and Principlementioning

confidence: 99%

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Andresen

Buticchi

2018

IEEE Trans. Power Electron.

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Abstract-A widely adopted multilevel converter topology is the cascaded H-bridge (CHB), as it can provide voltage and power scalability. However, since the CHB converter can be composed by cells with different remaining lifetime, it could be useful to delay a fault of higher aged cells in order to prolong the entire converter's lifetime. In this paper, a thermally compensated discontinuous pulse width modulation (DPWM) strategy is proposed in order to reduce the thermal stress for power semiconductors in power modules of higher aged cells. Considering the thermal cycles as the most influencing cause of wear out of power modules, the proposed method compensates the thermal cycles under a varying power profile by manipulating the clamping angle of the DPWM. Moreover, the proposed method obtains a comparable total harmonic distortion performance to the phase-shifted carrier modulation.Index Terms-Active thermal control, cascaded H-bridge (CHB), discontinuous pulse width modulation (DPWM), multilevel converter, reliability.

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Output common mode voltage of a newly combined three-phase full-bridge duplex inverter

2022

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Modulation strategy for highly reliable cascade H-Bridge inverter based on discontinuous PWM

Cited by 9 publications

References 23 publications

A Review of DC Fast Chargers with BESS for Electric Vehicles: Topology, Battery, Reliability Oriented Control and Cooling Perspectives

A Review of DC Fast Chargers with BESS for Electric Vehicles: Topology, Battery, Reliability Oriented Control and Cooling Perspectives

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Output common mode voltage of a newly combined three-phase full-bridge duplex inverter

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