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Content Provider | IET Digital Library |
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Author | Zhang, Zhi Zhu, Zuhong Hu, Bihua Tang, Xiao Liu, Chang Wang, Zhiping |
Abstract | In this study, a simple carrier-based pulse-width modulation (CBPWM) method is proposed for a three-phase three-level neutral-point-clamped converter with neutral-point (NP) balancing, which can be applied to three-phase three-wire (TPTW) and three-phase four-wire (TPFW) converter systems simultaneously. First, the effect of each switching state for the NP potential in TPTW and TPFW systems is analysed in detail, and a newly NP control strategy by reconstructing the switching state and adjusting the corresponding duration time is deduced for all operation conditions, it only needs to add the offset voltage to the modulation reference voltage to guarantee the NP balance and is easy to implement. Then, under all operating conditions, the mathematical model of NP current is derived and analysed to evaluate the low-frequency voltage oscillation in the NP. Finally, the effectiveness and feasibility of the proposed CBPWM strategy are verified by the experimental results based on a 12 kVA laboratory prototype. |
Starting Page | 3081 |
Ending Page | 3089 |
Page Count | 9 |
ISSN | 17554535 |
Volume Number | 13 |
e-ISSN | 17554543 |
Issue Number | Issue 14, Nov (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/13/14 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2020.0160 |
Journal | IET Power Electronics |
Publisher Date | 2020-06-17 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Apparent Power 12.0 KVA Control of Electric Power System Current Control Electric Current Control Machine Control Modulation Reference Voltage Neutral-point Balancing Neutral-point-clamped Converter NP Balance NP Control Strategy NP Current NP Potential Power Converter Power Supplies to Apparatus PWM Power Converter Simple Carrier-based Pulse-width Modulation Method Switching Converter Switching State Three-phase Four-wire Converter System Three-phase Three-wire Converter System Uniform Carrier-based PWM Method Voltage Control |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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