Reduced Stacked Multicell converter with minimized stored energy of flying capacitors

Hosseini, Seyed Hossein; Sadeghi, Meisam

doi:10.1109/isgteurope.2011.6162757

Cited by 19 publications

(16 citation statements)

References 13 publications

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“…In order to reduce the required devices (including dc sources, switches, and FCs), several FC-based hybrid multicell converters, which are based on the original FCC and SM converters have been proposed in [42][43][44][45][46][47][48][49][50]. In [42,43], the number of dc sources was reduced to half by adding LF switches to the original SMC.…”

Section: Hybrid Fc-based Multicell Convertersmentioning

confidence: 99%

“…To further reduce the number of LF and HF switches, hybrid FC-based multicell converters have been proposed based on the original FCC and SM converters by introducing only two LF switches, as shown in Figure 14a,b, respectively [45,46]. For obtaining an identical output level, the number of HF switches is reduced to half whereas the RMS value of the output voltage is doubled by comparing with their original topologies.…”

Section: Hybrid Fc-based Multicell Convertersmentioning

confidence: 99%

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Hybrid Multilevel Converters: Topologies, Evolutions and Verifications

Zhang

Din

et al. 2019

Energies

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Multilevel converters have good potential in high power and high voltage applications due to their advantages of reduced voltage or current stress on power devices. In recent years, hybrid multilevel converter (HMC) have attracted increasing attention since less equipment is required. In this paper, the topologies and evolutions of HMCs are presented, where five topology derivation ways are given by using basic cells in series-parallel/parallel-series. Some general topologies or structures that are used to generate higher levels are also deducted. Then many existing HMCs can be derived, and new topologies of the HMC might be inspired. The capabilities of neutral point and FC voltage balancing control are investigated. The performance of the selected FC-based HMCs is analyzed. Finally, the verifications of operation principle and control strategies for the derived HMCs are carried out.

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Section: Hybrid Fc-based Multicell Convertersmentioning

confidence: 99%

Section: Hybrid Fc-based Multicell Convertersmentioning

confidence: 99%

Hybrid Multilevel Converters: Topologies, Evolutions and Verifications

Zhang

Din

et al. 2019

Energies

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“…However, natural voltage balancing depends on the load conditions and, in practice, the exact voltage reference values might not be achieved. In [30], [32], [33] and [35], a balanced booster was proposed to achieve a fast voltage-balance dynamic. This balanced booster consists of a passive RLC filter, which introduces additional power losses.…”

Section: Introductionmentioning

confidence: 99%

An Active Voltage-Balancing Method Based on Phase-Shifted PWM for Stacked Multicell Converters

Ghias

Pou

Agelidis

2016

IEEE Trans. Power Electron.

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This paper proposes and evaluates an active voltagebalancing method for stacked multicell converters (SMCs) using phase-shifted pulse-width modulation. The method is easy to implement and can be applied to SMCs with any number of levels. The proposed method balances the voltages of the capacitors by modifying the duty cycle of each switch of the SMC using a proportional controller. The direction of the output current and the crossed effect among the duty cycles of the switches is considered and used to improve capacitor voltage balance. The performance of the proposed voltage-balancing method is verified experimentally for different loads, such as linear and non-linear loads, and under transient conditions.

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“…The dynamics of the converter slow down with different types of load conditions. Some references in [9], [11], [12], [14] proposed a balance booster to achieve fast voltage balance dynamic. This balance booster consists of a passive RLC filter, which introduces additional power losses.…”

Section: Introductionmentioning

confidence: 99%

Voltage balancing method using phase-shifted PWM for stacked multicell converters

Ghias

Pou

Agelidis

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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Abstract-This paper proposes an active voltage balancing method for stacked multicell converters (SMC) using phaseshifted pulse-width modulation, which is easy to implement and extend to high number of levels. The proposed method balances the voltages of the capacitors by modifying the duty cycle of each switch of the SMC using a proportional controller. The crossed effect between capacitor currents and duty cycles is considered and is used for optimal capacitor voltage balance. The performance of the proposed voltage balancing method is verified by simulation for different operating conditions, such as unbalanced linear loads, non-linear loads and load transients.

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Reduced Stacked Multicell converter with minimized stored energy of flying capacitors

Cited by 19 publications

References 13 publications

Hybrid Multilevel Converters: Topologies, Evolutions and Verifications

Hybrid Multilevel Converters: Topologies, Evolutions and Verifications

An Active Voltage-Balancing Method Based on Phase-Shifted PWM for Stacked Multicell Converters

Voltage balancing method using phase-shifted PWM for stacked multicell converters

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