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High Gain Active Neutral Point Clamped Seven-Level Self-Voltage Balancing Inverter
IEEE Transactions on Circuits and Systems II: Express Briefs, 2020This brief presents a novel seven-level (7L) inverter topology for grid-connected renewable applications. It consists of ten active switches and one inner flying-capacitor unit forming a structure similar to conventional active neutral point clamped inverter.
M. Jagabar Sathik +2 more
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Phase-shifted modulation strategy for voltage balancing in neutral-point clamped converter
2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, 2014This 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
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Research on Neutral-Point Balancing for Three-Level Space Voltage Vector Converter
Advanced Materials Research, 2013A 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
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IEEE transactions on power electronics, 2019
The three-level full-bridge (TLFB) dc−dc converter has been widely used in high-voltage, high-power applications. In the experimental test, the neutral-point voltage deviation appears; moreover, it has also been found out that if the flying capacitors ...
Peng Liu, S. Duan
semanticscholar +1 more source
The three-level full-bridge (TLFB) dc−dc converter has been widely used in high-voltage, high-power applications. In the experimental test, the neutral-point voltage deviation appears; moreover, it has also been found out that if the flying capacitors ...
Peng Liu, S. Duan
semanticscholar +1 more source
A Hybrid Control Method for Neutral-Point Voltage Balancing in Three-Level Inverters
IEEE Transactions on Power Electronics, 2021Neutral-point (NP) voltage fluctuation is an inherent problem in three-level inverters. Without any control measures, the NP voltage will deviate, and the dc bias and ac oscillation can be observed, which may lead to the failure of power devices and capacitors, so as to damage the system security.
Wenchao Wan +3 more
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A Capacitor Voltage-Balancing Method for Nested Neutral Point Clamped (NNPC) Inverter
IEEE Transactions on Power Electronics, 2016A 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 +5 more
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IEEE International Conference on Power System Technology, 2018
Dual active bridge (DAB) dc-dc converter combined with multilevel topology is popular in medium and high voltage areas. This paper proposes an n-level neutral-point clamped (NPC) dual active bridge dc-dc Converter, of which has multilevel diode-clamped ...
Zhaozhe Deng +3 more
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Dual active bridge (DAB) dc-dc converter combined with multilevel topology is popular in medium and high voltage areas. This paper proposes an n-level neutral-point clamped (NPC) dual active bridge dc-dc Converter, of which has multilevel diode-clamped ...
Zhaozhe Deng +3 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), 2004A 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
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A simplified neutral-point voltage balancing of a three-level NPC inverter
Journal of Science & TechnologyThis paper presents an enhanced space vector modulation strategy for three-level neutral-point-clamped inverters, aiming to balance the neutral point voltage.
V. Ngo +6 more
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Enhanced Buck–Boost Neutral-Point-Clamped Inverters With Simple Capacitive-Voltage Balancing
IEEE Transactions on Industry Applications, 2010In traditional neutral-point-clamped (NPC) inverters, two major operating issues encountered are their relatively limited voltage-buck variation range and capacitive-voltage imbalance, which can cause low-order harmonics to appear at the inverter output.
Tan, Kuan Khoon +3 more
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