Dual 18-pulse rectifier for high-power multilevel inverters

Cheng, Zhi; Wu, Bin

doi:10.1109/iecon.2005.1568960

Cited by 4 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13. The power circuit consists of an NPC/H-bridge based inverter powered by dual 18-pulse transformers and diode rectifiers [18]. The control is based on the dSpace Rapid Control Prototyping system.…”

Section: Experiments Resultsmentioning

confidence: 99%

A Novel Switching Sequence Design for Five-Level NPC/H-Bridge Inverters With Improved Output Voltage Spectrum and Minimized Device Switching Frequency

Cheng,

2007

IEEE Trans. Power Electron.

111

View full text Add to dashboard Cite

This paper presents a novel switching sequence design for the space-vector modulation of high-power multilevel converters. The switching sequences are optimized for the improvement of harmonic spectrum and the minimization of device switching frequency. Compared to other commonly used switching sequences, the output spectrum of the proposed design shows higher inverter equivalent switching frequency. Meanwhile, the device switching frequency is reduced by using a flexible switching pattern. The proposed switching sequence has been simulated and experimentally tested on a 5-level neutral point clamped H-bridge based inverter. The results from both simulations and experiments consistently verify the above-mentioned features.Index Terms-Multilevel power converter, power conversion harmonics, space vector modulation (SVM), switching loss.

show abstract

Section: Experiments Resultsmentioning

confidence: 99%

A Novel Switching Sequence Design for Five-Level NPC/H-Bridge Inverters With Improved Output Voltage Spectrum and Minimized Device Switching Frequency

Cheng,

2007

IEEE Trans. Power Electron.

111

View full text Add to dashboard Cite

show abstract

“…Multipulse rectifier transformer systems have been proposed to enhance the conventional rectification system in various applications. For instance, variable frequency drives [14]- [16], HVDC [17], renewable energy power transmission [18], [19], and aircraft based power supply system [20], [21]. Phaseshifting transformer is the most essential components used to realize 12-pulse, 18-pulse, 24-pulse, or even higher pulses of rectification.…”

Section: Multi-pulse Rectifier Transformer Systemmentioning

confidence: 99%

DC traction power substation using eighteen-pulse rectifier transformer system

Toh

Tan

2021

IJPEDS

View full text Add to dashboard Cite

<span lang="EN-US">Twelve-pulse rectification system had been widely integrated in today’s DC traction power sub-station (DC-TPSS). This configuration had successfully mitigated low order harmonic distortion. As some research findings had confirmed that the dc voltage and current ripple factors may further minimize by increasing the number of rectification pulses to 18, 24, or 36. This paper had presented a simulation study to investigate the prospect of implementing an eighteen-pulse rectification system in a DC-TPSS. The theory of phase-shifting transformer used to produce an 18-pulse rectifier is presented with simulation verification. Simulation result shows that 3.69% of grid current distortion index is recorded without installing any filters. In addition, the dc voltage and current ripple may also be further reduced for about 30% compared to a conventional twelve-pulse rectification system.</span>

show abstract

“…As is shown in Fig.1 (a), wind turbine drives polyphased PMSG which has six windings and 18 phases displaced °2 0 in space [10], the output of each winding is connected with diode-clamped power module respectively. The 3-phase inverter is composed of six power modules, every two power modules is cascaded to form one phase output, and the 3-phase output is integrated into power grid through inductors.…”

Section: Topology Analysismentioning

confidence: 99%

Research on a kind of diode-clamped cascade topology in direct-driven wind power system

Hu¹,

Li²,

Xu³

2008

2008 Third International Conference on Electric Utility Deregulation and Restructuring and Power Technologies

View full text Add to dashboard Cite

With fast increasing of single wind turbine capacity, multi-level converter has been paid much attention. Topology of diode-clamped 5-level cascade H-bridge combines the advantages of diode-clamped multi-level converter and cascade H-bridge multi-level converter, which can further improve the output voltage rating and require fewer clamping diodes and separated DC-sources; With phase-shifting transformer and 12-pulse rectifier, the topology may be applied in direct-driven wind power system using polyphased permanent magnet synchronous generator (PMSG).The modulation strategy integrating subharmonic SPWM and carrier phase-shifted SPWM is adopted based on the topology, which can control the diode-clamped 5level cascade H-bridge converter expediently and increase the equivalent carrier frequency and lower switching losses and filter volume. The validity of the proposed topology and its control principle adopted is verified by simulation and experimental results, which may provide possibility for the wind power system to be directly connected with medium voltage power grid without boost transformer.Index Terms--18-phase PMSG, 12-pulse rectifier, Carrier phase-shifted SPWM, Diode-clamped 5-level cascade H-bridge, Direct-driven wind power system, Phase-shifting transformer

show abstract

Dual 18-pulse rectifier for high-power multilevel inverters

Cited by 4 publications

References 6 publications

A Novel Switching Sequence Design for Five-Level NPC/H-Bridge Inverters With Improved Output Voltage Spectrum and Minimized Device Switching Frequency

A Novel Switching Sequence Design for Five-Level NPC/H-Bridge Inverters With Improved Output Voltage Spectrum and Minimized Device Switching Frequency

DC traction power substation using eighteen-pulse rectifier transformer system

Research on a kind of diode-clamped cascade topology in direct-driven wind power system

Contact Info

Product

Resources

About