NDLI: Control scheme for cascaded H-bridge converter-based distribution network static compensator

Content Provider	IET Digital Library
Author	Marzoughi, Alinaghi Neyshabouri, Yousef Imaneini, Hossein
Abstract	In this study, a new control scheme is proposed for cascaded H-bridge (CHB)-based static compensator (STATCOM). The new indirect current control method does not require any current sensors, so the total system has enhanced reliability. Using the proposed control approach, dc-link voltages across dc-link capacitors are regulated to the reference value, even if the H-bridge cells dissipate different amounts of losses. However, regardless of the active power distribution, the reactive power is equally shared between the cells. The proposed scheme is investigated on distribution network STATCOM, but is not restricted to that and can be applied to STATCOMs at any voltage and power level. Multicarrier phase-shifted sinusoidal pulse-width modulation is used for modulation purpose, since it is naturally the best option for CHB converter. In this way, low-order harmonics are eliminated from the line side current and the current THD is below 5%, which satisfies IEEE-519 standard. To verify the feasibility of the control strategy, simulations as well as experimental implementations are carried out on a CHB converter having three cells in each phase.
Starting Page	2837
Ending Page	2845
Page Count	9
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 11, Nov (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0663
Journal	IET Power Electronics
Publisher Date	2014-08-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Distribution Bridge Circuit Cascade System Cascaded H-bridge Converter-based Distribution Network Static Compensator CHB-based STATCOM Control of Electric Power System Current Control Dc-link Capacitor Dc-link Voltage Regulation Distribution Network Electric Current Control H-bridge Cell IEEE-519 Standard Indirect Current Control Low-order Harmonics Elimination Multicarrier Phase-shifted Sinusoidal Pulse-width Modulation Other Power Apparatus And Electric Machine Power Capacitor Power Converter Power Distribution Control Power Distribution Reliability Power Supplies to Apparatus Power System Economics Power System Managemen Power System Operation PWM Power Converter Reference Value Reliability Static VAr Compensators Voltage Control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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