Analytical evaluation of DC capacitor RMS current and voltage ripple in neutral-point clamped inverters

被引：9
|
作者：
Gopalakrishnan, K. S. [1 ]
Janakiraman, Santosh [1 ]
Das, Soumitra [2 ]
Narayanan, G. [1 ]
机构：
[1] Indian Inst Sci, Dept Elect Engn, Bangalore 560012, Karnataka, India
[2] Natl Inst Technol Goa, Dept Elect & Elect Engn, Farmagudi 403401, Ponda, India
来源：
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES | 2017年 / 42卷 / 06期
关键词：
Current control; current stress; diode-clamped inverter; full-bridge inverter; half-bridge inverter; multi-level inverter; proportional-resonant controller; sinusoidal modulation; vector control; voltage ripple; LINK CAPACITOR; 3-LEVEL; CONVERTER;
D O I：
10.1007/s12046-017-0668-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The sizing of the DC-link capacitor in a three-level inverter is based on the RMS current flowing through it. This paper analyses the DC-link capacitor RMS current in a neutral-point clamped (NPC) inverter and expresses the same as a function of modulation index, line-side current amplitude and power factor. Analytical closed-form expressions are derived for the capacitor RMS current for single-phase half-bridge, single-phase full-bridge and three-phase three-leg topologies of a three-level inverter. The worst-case capacitor current stress is determined for each topology based on the analytical expressions. Further, analytical expressions are derived for the RMS values of low-frequency and high-frequency capacitor currents. These expressions are then used to estimate voltage ripple across the DC capacitor for sinusoidally modulated three-phase NPC inverter. The analytical expressions for the RMS current and voltage ripple are validated experimentally over a wide range of operating points.
引用
收藏
页码：827 / 839
页数：13
相关论文
共 50 条
  • [21] An Adaptive Control of DPWM for Clamped-Three-Level Photovoltaic Inverters With Unbalanced Neutral-Point Voltage
    Hashempour, Mohammad M.
    Yang, Meng-Ying
    Lee, Tzung-Lin
    IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2018, 54 (06) : 6133 - 6148
  • [22] Novel Modulation Strategy to Achieve Neutral-point Voltage Balance, Common-mode Voltage, and Switching Loss Reduction for Neutral-point Clamped Three-level Inverters
    Liu, Donghan
    Wang, Jinping
    Liu, Shengyu
    Jiang, Weidong
    CHINESE JOURNAL OF ELECTRICAL ENGINEERING, 2024, 10 (04): : 106 - 118
  • [23] Neutral-Point Current Modeling and Control for Neutral-Point Clamped Three-Level Converter Drive with Small DC-Link Capacitors
    Maheshwari, RamKrishan
    Munk-Nielsen, Stig
    Busquets-Monge, Sergio
    2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), 2011, : 2087 - 2094
  • [24] DC-Link Capacitor Design in Neutral Point Clamped Multilevel Inverter Utilizing Ripple Current Analysis and DC-DC Converter Control
    Sholihah, Fifi Hesty
    Becerra, Victor
    Prabhu, Shanker Radhakrishna
    2024 INTERNATIONAL ELECTRONICS SYMPOSIUM, IES 2024, 2024, : 89 - 94
  • [25] A Resonant Switched-Capacitor Converter for Neutral-Point Voltage Balancing of Three-Level Inverters
    Guo, Wenhu
    Yang, Jiatao
    Li, Rui
    Liu, Mingyi
    Cao, Xi
    IEEE TRANSACTIONS ON POWER ELECTRONICS, 2023, 38 (10) : 12692 - 12703
  • [26] Active Neutral-Point Balancing of Three-Level Neutral-Point-Clamped Traction Inverters
    Xu, Huihui
    Bubert, Andreas
    Laumen, Michael
    De Doncker, Rik W.
    2018 21ST INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS), 2018, : 2256 - 2261
  • [27] Optimized Modulation in Parallel Neutral-Point Clamped Inverters for Circulating Current Reduction: A Space Vector Analysis
    Zou, Zhi-Xiang
    Hahn, Frederik
    Buticchi, Giampaolo
    Andresen, Markus
    Liserre, Marco
    IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, 2017, : 7824 - 7830
  • [28] Capacitor Lifetime Extension in a Hybrid Active Neutral-Point-Clamped Inverter With Reduction of DC-Link Ripple Current and Common-Mode Voltage
    An, Sang-Won
    Kim, Seok-Min
    Lee, Kyo-Beum
    IEEE ACCESS, 2021, 9 : 40336 - 40348
  • [29] Common Mode Voltage Reduction and Neutral-Point Voltage Balance for Quasi-Z-Source Three-Level Neutral-Point-Clamped Inverters
    Liu, Wenjie
    Yang, Yongheng
    Li, Weilin
    Zhang, Xiaobin
    Husev, Oleksandr
    Vinnikov, Dmitri
    2022 INTERNATIONAL POWER ELECTRONICS CONFERENCE (IPEC-HIMEJI 2022- ECCE ASIA), 2022, : 934 - 939
  • [30] DC-link Capacitor Voltage Balancing in Five-level Neutral Point Clamped Inverters using Space Vector Modulation
    Guan, Yue
    Li, Lei
    IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, 2017, : 1037 - 1042
12345