Voltage Balancing Control of Diode-Clamped Multilevel Converters With Passive Front-Ends

Busquets‐Monge, Sergio; Alepuz, Salvador; Bordonau, J.; Peracaula, J.

doi:10.1109/tpel.2008.925182

Cited by 134 publications

(73 citation statements)

References 36 publications

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“…The good performance of this type of voltage balancing PWM strategies has been experimentally verified in [6], [7], [12], and [13].…”

Section: Simulation Resultsmentioning

confidence: 80%

“…It can be seen that the proposed CB PWM strategies perform satisfactorily in multilevel multileg (multiphase) systems, guaranteeing the dc-link capacitor voltage balance in every switching cycle with low dc-link capacitance values. Note the use of all possible voltage levels (nine) in synthesizing the output line-to-line voltages v 12 and v 13 .…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The proposed CB PWM strategies do not produce any lowfrequency distortion in the ac-side line-to-line voltages and currents under unbalanced dc-link capacitor voltages [12]. On the other hand, these unbalances can be corrected by properly modifying the values of d x,y in CB1 (according to the closedloop control presented in [13]) or the phase-shifts among carriers in CB2, CB3 and CB4.…”

Section: Simulation Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Carrier-based PWM strategies for the comprehensive capacitor voltage balance of multilevel multileg diode-clamped converters

Busquets‐Monge

Ruderman²

2010

2010 IEEE International Symposium on Industrial Electronics

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Abstract- This paper presents four carrier-based PWM strategies for diode-clamped converters of any number of levels and any number of legs (phases). These carrier-based PWM strategies guarantee the dc-link capacitor voltage balance in every switching cycle without the need of additional hardware and with low dc-link capacitance values for any modulation index and load, provided that the sum of leg currents equals zero. The performance of the presented carrier-based PWM strategies, in terms of dc-link capacitor voltage balance and total harmonic distortion in the output line-to-line voltages, is evaluated through simulation, showing a tradeoff between the simplicity of the carrier-based PWM implementation and its total harmonic distortion performance.

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“…The good performance of this type of voltage balancing PWM strategies has been experimentally verified in [6], [7], [12], and [13].…”

Section: Simulation Resultsmentioning

confidence: 80%

Section: Simulation Resultsmentioning

confidence: 99%

Section: Simulation Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Carrier-based PWM strategies for the comprehensive capacitor voltage balance of multilevel multileg diode-clamped converters

Busquets‐Monge

Ruderman²

2010

2010 IEEE International Symposium on Industrial Electronics

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show abstract

“…In a multiphase system with p phases, p converter legs are needed. The balancing of the dc-link capacitor voltages can be guaranteed in every switching cycle through using appropriate pulsewidth modulation (PWM) strategies ( [10]- [12]) and controls [13], without the need of introducing additional hardware. The balance is achieved by extracting, in every switching cycle, a zero average current from the inner dc-link points.…”

Section: Discussionmentioning

confidence: 99%

An m-level active-clamped converter topology - operating principle

Busquets‐Monge

Nicolás-Apruzzese

2010

2010 IEEE International Symposium on Industrial Electronics

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Abstract- This paper presents a novel multilevel active-clamped converter topology, which is an extension to m levels of the three-level active neutral-point-clamped topology. The operating principle is established through the definition of a proper set of switching states and a transition strategy between adjacent switching states. The benefits of the proposed converter topology and control in comparison to alternative multilevel converter topologies are discussed. Simulation results of a simple dc-dc converter configuration are presented to illustrate the converter performance features.

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“…In NPC, different voltage levels are provided by series DC-link capacitors. However, the NPC converter providing more than three levels requires numerous clamping diodes and encounters a voltage-drift phenomenon in some operating regions [14]- [16]. Correspondingly, the operating regions are enlarged in FC converters, in which different voltage levels are clamped by FCs in each phase.…”

Section: Introductionmentioning

confidence: 99%

Novel Five-Level Three-Phase Hybrid-Clamped Converter with Reduced Components

Chen¹,

Yao²,

Liu³

2014

Journal of Power Electronics

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This study proposes a novel five-level three-phase hybrid-clamped converter composed of only six switches and one flying capacitor (FC) per phase. The capacitor-voltage-drift phenomenon of the converter under the classical sinusoidal pulse width modulation (SPWM) strategy is comprehensively analyzed. The average current, which flows into the FC, is a function of power factor and modulation index and does not remain at zero. Thus, a specific modulation strategy based on space vector modulation (SVM) is developed to balance the voltage of DC-link and FCs by injecting a common-mode voltage. This strategy applies the five-segment method to synthesize the voltage vector, such that switching losses are reduced while optional vector sequences are increased. The best vector sequence is then selected on the basis of the minimized cost function to suppress the divergence of the capacitor voltage. This study further proposes a startup method that charges the DC-link and FCs without any additional circuits. Simulation and experimental results verify the validity of the proposed converter, modulation strategy, and precharge method.

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Voltage Balancing Control of Diode-Clamped Multilevel Converters With Passive Front-Ends

Cited by 134 publications

References 36 publications

Carrier-based PWM strategies for the comprehensive capacitor voltage balance of multilevel multileg diode-clamped converters

Carrier-based PWM strategies for the comprehensive capacitor voltage balance of multilevel multileg diode-clamped converters

An m-level active-clamped converter topology - operating principle

Novel Five-Level Three-Phase Hybrid-Clamped Converter with Reduced Components

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