Control of cascaded H-bridge active rectifier providing active voltage balancing

Blahník, Vojtĕch; Peroutka, Zdeněk; Talla, Jakub

doi:10.1109/iecon.2014.7049194

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…This method is well described in [16]. The voltage balancing is important during fast transient and is possible used some of these method [11], [17], [18]. The catenary current (icat) is in phase with voltage (ucat) as a shown in Figure 4.…”

Section: Proposed Control Of Multilevel Convertermentioning

confidence: 99%

Control of Multilevel Converter for AC Traction Substation with Power Symmetrization Unit

Blahník

Straka

Pittermann

2020

2020 International Conference on Applied Electronics (AE)

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This paper describes the control of multilevel converter for substation balancer. The topology of substation with electronic balancer is described. The principle of power symmetrization and reactive power compensation is introduced in paper. Designed control algorithm for independent current control is main goal of this paper. This control is based on the calculation of required current by Steinmetz's method. The paper presents simulation results of designed prototype of substation with rated power of 12.5 MVA for 25 kV / 50 Hz traction catenary.

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Section: Proposed Control Of Multilevel Convertermentioning

confidence: 99%

Control of Multilevel Converter for AC Traction Substation with Power Symmetrization Unit

Blahník

Straka

Pittermann

2020

2020 International Conference on Applied Electronics (AE)

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“…For better understanding of the proposed technology, it is necessary to make a comparison over classic multilevel converter topologies. In order to achieve four-quadrant AC-DC-AC conversion, NPC, FC, and CHB are arranged in a back-to-back (B2B) scheme [23]. As a matter of convenience, the proposed topology is abbreviated as CMC.…”

Section: Comparison With Classic Multilevel Topologiesmentioning

confidence: 99%

A Novel Three-Level Voltage Source Converter for AC–DC–AC Conversion

Chen

Mao

et al. 2018

Energies

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This paper presents a novel three-level voltage source converter for AC-DC-AC conversion. The proposed converter based on H-bridge structure is studied in detail. The control method with traditional double-closed-loop control strategy and voltage balancing algorithm is applied to the rectifier side. Correspondingly, a simplified modulation algorithm is applied to the inverter side, and the voltage balancing of inverter side is realized through the optimal selection of switching combination. Then, the application of the proposed topology is assessed in general and ideal operation conditions. Furthermore, the proposed topology with a variable voltage variable frequency (VVVF) is verified in experimental conditions. The performance of the proposed converter and control strategy is evaluated by experimental and simulation results.Energies 2018, 11, 1147 2 of 17 different sub-modules [19] or dc-link voltages [20]. It has the advantage of flexible extending of the output levels and power rating. However, the bulky and expensive phase-shifting transformers for isolated dc sources make it hard to increase the power density. A back-to-back CHB converter without any isolating device [21] can avoid these problems. However, short-circuits caused by the hardware topology are difficult to solve and the proposed topology cannot be expanded to a three phase system.In this paper, a new three-level voltage source converter for AC-DC-AC conversion is proposed. It can be used in three-phase system and more easily to extend to higher voltage level than a back-to-back NPC converter. Compared to the back-to-back CHB converter proposed in [21], a half H-bridge cell used in the new topology provides more redundant vectors and makes it overcome the short-circuit problem, which simplifies the control method. In addition, the proposed topology utilizes fewer switches at the cost of increasing the number of dc-link capacitors, the separated dc links will decrease the total dc voltage of the system, which is beneficial for the insulation design in many fields [22].The rest of the paper is organized as follows. In Section 2, the circuit configuration, characteristics and working principles of the proposed topology are studied in detail. The overall control strategy and pulse-width modulation strategy considering the voltage balance control is given in Section 3. In Section 4, two operation conditions are analyzed, and the simulation and experimental results demonstrate the effectiveness of the proposed control strategies. Section 5 concludes the paper.

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A Novel DC-Link Capacitor Voltage Balance Control Based on Coordination of Rectifier–Inverter Stage in a Modified Unidirectional Five-Level Converter for AC Motor Drives

Cheng,

Zhao,

Wang

et al. 2023

IEEE J. Emerg. Sel. Topics Power Electron.

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Control of cascaded H-bridge active rectifier providing active voltage balancing

Cited by 3 publications

References 15 publications

Control of Multilevel Converter for AC Traction Substation with Power Symmetrization Unit

Control of Multilevel Converter for AC Traction Substation with Power Symmetrization Unit

A Novel Three-Level Voltage Source Converter for AC–DC–AC Conversion

A Novel DC-Link Capacitor Voltage Balance Control Based on Coordination of Rectifier–Inverter Stage in a Modified Unidirectional Five-Level Converter for AC Motor Drives

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