Results 291 to 300 of about 52,716 (352)

Phase-shifted modulation strategy for voltage balancing in neutral-point clamped converter

2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, 2014
This paper suggests a new method to balance the voltage of the two capacitors in the three-level neutral-point clamped (NPC) converter. The proposed method only needs the information of two capacitor voltages. The two capacitor voltages are fed back to the controller and then the controller generates phase shifting value with which sinusoidal ...
Sangin Lee, Mehdi Ferdowsi
openaire   +1 more source

Research on Neutral-Point Balancing for Three-Level Space Voltage Vector Converter

Advanced Materials Research, 2013
A novel hybrid clamped dual-PWM three-level converter topology is proposed for induction motor drives in this paper. The switching states of hybrid clamp three-level converters increase to sixty-four from twenty-seven switching states of diode clamp three-level converters.
Yun Tao Yue, Zhi Yong Xu
openaire   +1 more source

Fixed and Smooth-Switch-Sequence Modulation for Voltage Balancing Based on Single-Phase Three-Level Neutral-Point-Clamped Cascaded Rectifier

IEEE transactions on industry applications, 2020
In this article, a fixed and smooth-switch-sequence modulation strategy is proposed to equalize the dc-link voltages among the cascaded rectifier. The structure of a single-phase three-level neutral-point-clamped cascaded rectifier is studied. Three core
Xiaoqiong He, Haolun Yu, Pengcheng Han, Zhiqin Zhao, Xu Peng, Zeliang Shu, L. Koh, Peng Wang   +7 more
semanticscholar   +1 more source

Neutral-Point Voltage Balancing Strategy for Three-Level Neutral Point Clamped Inverter Based on On-line Calculating Redundant Vector Duty Cycles

International Conference on Electrical Machines and Systems, 2019
This paper analyzes the principle of neutral-point (NP) voltage balancing control for three-level neutral point clamped (NPC) inverter by distributing redundant small vector duty cycles (RVDC) firstly, then the calculation formulas of RVDC to control the
Zhan Gao, Lu Zhao, Qiongxuan Ge, Yao-hua Li, Bo Zhang   +4 more
semanticscholar   +1 more source

A Capacitor Voltage-Balancing Method for Nested Neutral Point Clamped (NNPC) Inverter

IEEE Transactions on Power Electronics, 2016
A capacitor voltage-balancing method for a nested neutral point clamped (NNPC) inverter is proposed in this paper. The NNPC inverter is a newly developed four-level voltage-source inverter for medium-voltage applications with properties such as operating over a wide range of voltages (2.4–7.2 kV) without the need for connecting power semiconductor in ...
Kai Tian, Bin Wu, Mehdi Narimani, Dewei Xu, Zhongyuan Cheng, Navid Reza Zargari   +5 more
openaire   +1 more source

A New Hybrid T-type Nested Neutral Point Clamped (NNPC) Multilevel Inverter with Improved Voltage Balancing Strategy

2020 28th Iranian Conference on Electrical Engineering (ICEE), 2020
In this paper, a new hybrid configuration of nested neutral point clamped (NNPC) inverter is suggested which generates a 9-level phase-to-neutral ac side voltage. The circuit configuration and operation principle of the introduced converter are discussed
Milad Shamouei-Milan, Mahyar Hassanifar, Y. Neyshabouri, S. Golshannavaz, D. Nazarpour   +4 more
semanticscholar   +1 more source

Simple three-level neutral point voltage balance control strategy based on SVPWM

Archives of Electrical Engineering, 2013
Abstract The unbalance of the neutral point voltage is an inherent problem of three-level neutral-point-clamped (NPC) inverter, the effect of neutral point voltage balancing which is caused by voltage vector is analyzed, and the relationship of the voltage offset and neutral point voltage is studied in this paper.
Bo Gong, Shanmei Cheng, Yi Qin
openaire   +1 more source

A Novel Model Predictive Control Method with Discrete Space Vector Modulation for Neutral-Point Voltage Balancing of Vienna-Type Rectifier

European Conference on Cognitive Ergonomics, 2018
This paper presents a novel model predictive control (MPC) method with discrete space vector modulation (DSVM) to balance neutral-point voltage of Vienna-type rectifier.
Wenjie Zhu, Changsong Chen, Jian He, S. Duan, Jieyi Sun, Xinggang Fan, Wu Ming   +6 more
semanticscholar   +1 more source

A hybrid clamped multilevel inverter topology with neutral point voltage balancing ability

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
A multilevel inverter topology clamped together by active and passive devices is proposed in this paper, which is based on the analysis of the existing three types of multilevel converter topologies. The new topology can balance DC link capacitor voltages by itself without additional circuit and separated DC voltage sources, regardless of load ...
null Alian Chen, null Xiangning He
openaire   +1 more source

An Improved PWM Scheme for Three-Level Inverter Extending Operation Into Overmodulation Region With Neutral-Point Voltage Balancing for Full Power-Factor Range

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018
This paper presents a carrier-based pulsewidth modulation (PWM) strategy for a three-level neutral-point-clamped (NPC) inverter that exhibits good control over dc-link capacitor voltages and mitigates low-frequency oscillations in the neutral point (NP ...
S. K. Giri, S. Mukherjee, Sourabh Kundu, Subrata Banerjee, C. Chakraborty   +4 more
semanticscholar   +1 more source