Journal ArticleDOI
A new type of STATCOM based on cascading voltage source inverters with phase-shifted unipolar SPWM
Yiqiao Liang,Chika O. Nwankpa +1 more
- Vol. 35, Iss: 5, pp 1118-1123
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TLDR
The proposed STATCOM has the advantages of a reduced number of VSIs; the VSIs being identical and extremely fast in response to reactive power change and the size of inductor and DC capacitors can be further reduced.Abstract:
In this paper, a new type of static compensator (STATCOM) is proposed. This new STATCOM is constructed by cascading several identical full-bridge (H bridge) voltage-source inverters (VSIs). A so-called phase-shifted sinusoidal pulsewidth modulation (SPWM) unipolar voltage switching scheme is applied to control the switching devices of each VSI. The harmonics in STATCOM current caused by the DC voltage ripple is rejected by a new method developed in this paper. As a result, the size of inductor and DC capacitors can be further reduced. A very effective startup procedure is proposed to start up the STATCOM. The proposed STATCOM has the advantage of a fewer number of VSIs, the VSIs being identical and extremely fast in response to reactive power change.read more
Citations
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Journal ArticleDOI
Multilevel inverters: a survey of topologies, controls, and applications
TL;DR: The most important topologies like diode-clamped inverter (neutral-point clamped), capacitor-Clamped (flying capacitor), and cascaded multicell with separate DC sources are presented and the circuit topology options are presented.
Journal ArticleDOI
Medium-Voltage Multilevel Converters—State of the Art, Challenges, and Requirements in Industrial Applications
TL;DR: An inverter configuration based on three-level building blocks to generate five-level voltage waveforms is suggested and it is shown that such an inverter may be operated at a very low switching frequency to achieve minimum on-state and dynamic device losses for highly efficient MV drive applications while maintaining low harmonic distortion.
Journal ArticleDOI
Multicarrier PWM strategies for multilevel inverters
TL;DR: A PWM method is developed for cascaded and hybrid inverters to achieve the same harmonic gains as phase disposition PWM achieves for diode-clamped inverters.
Journal ArticleDOI
Control and Performance of a Transformerless Cascade PWM STATCOM With Star Configuration
TL;DR: In this paper, a three-phase transformerless cascade PWM static synchronous compensator (STATCOM) is proposed for installation on industrial and utility power distribution systems, which devotes itself to meeting the demand of reactive power but also to voltage balancing of multiple galvanically isolated and floating dc capacitors.
Journal ArticleDOI
Review of multilevel voltage source inverter topologies and control schemes
TL;DR: In this paper, the most common multilevel inverter topologies and control schemes have been reviewed, and the selection of topology and control techniques may vary according to power demands of inverter.
References
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Book
Power Electronics: Converters, Applications and Design
TL;DR: In this paper, the authors present a simulation of power switch-mode converters for zero-voltage and/or zero-current switchings in power electronic converters and systems.
Proceedings ArticleDOI
A multilevel voltage-source inverter with separate DC sources for static VAr generation
TL;DR: A new multilevel voltage-source inverter with separate DC sources is proposed for high-voltage, high power applications, such as flexible AC transmission systems (FACTS) including static VAr generation (SVG), power line conditioning, series compensation, phase shifting, voltage balancing, fuel cell and photovoltaic utility systems interfacing, etc.
Proceedings ArticleDOI
Comparison of multilevel inverters for static VAr compensation
TL;DR: In this paper, the issues affecting the application of multilevel invertor structures as reactive power compensators are discussed and compared with the device MVA and reactive component MVA requirements of two topologies that have been presented in prior literature.
Journal ArticleDOI
Development of a large static VAr generator using self-commutated inverters for improving power system stability
TL;DR: In this paper, a static VAr generator (SVG) using self-commutated inverters of 80 MVA capacity was developed and successfully applied to an annual 154 KV power system to stabilize the power system.
Proceedings ArticleDOI
Dynamic performance and control of a static VAr generator using cascade multilevel inverters
Fang Zheng Peng,Jih-Sheng Lai +1 more
TL;DR: In this paper, a cascade multilevel inverter is proposed for static VAr compensation/generation applications, which can generate an almost sinusoidal waveform voltage with only one time switching per cycle.