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IEEE Transactions on Industrial Electronics, 2013 A neutral-point-clamped three-level inverter with small dc-link capacitors is presented in this paper. The inverter requires zero average neutral-point current for stable neutral–point voltage.
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Research on balance of neutral-point potential in three level neutral point clamped inverter
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017This paper studies the balance problems of neutral-point potential in three level neutral-point clamped inverter. Based on double modulation wave pulse control strategy, a new offset voltage algorithm is proposed. This control strategy can completely eliminate the low-frequency fluctuations in neutral-point potential.
Xinying Wang +3 more
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Neutral-Point Potential Balancing of a Five-Level Active Neutral-Point-Clamped Inverter
IEEE Transactions on Industrial Electronics, 2013The five-level active neutral-point (NP)-clamped (ANPC) converter is a newly emerging topology which can overcome the drawbacks of traditional NP-clamped and flying-capacitor multilevel converters. This paper presents a comprehensive theoretical analysis of the NP potential balancing issue and demonstrates that the NP potential can be naturally ...
Kui Wang 0001 +4 more
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A novel neutral point potential control for the three-level neutral-point-clamped converter
2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016Three-level neutral-point-clamped (NPC) converters/inverters have become a popular topology for not only medium-voltage (1k–33k) but also low-voltage level industrial application because of its reduced transistor block voltage and lower output current distortion.
Hsin-chih Chen +3 more
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Elimination of neutral point potential oscillations in the four pole neutral point clamped converter
2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia), 2017This paper investigates the effect of neutral point potential oscillation on four pole neutral point clamped converter. The detailed derivation indicates such oscillation is closely associated with neutral point current, so this paper presents a modulation technique to effectively eliminate this neutral point current. Besides, an offset injected method
null Meng-jiang Tsai, null Po-tai Cheng
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2019 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), 2019
In this paper, a neutral-point (NP) potential balancing method based on zero-sequence voltage injection is presented for the traditional three-level neutral-point-clamped (NPC) back-to-back converter. In the control algorithm, make the NP current on the rectifier side follow the reference NP current to adjust the NP potential balancing.
Baohui Ma +4 more
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In this paper, a neutral-point (NP) potential balancing method based on zero-sequence voltage injection is presented for the traditional three-level neutral-point-clamped (NPC) back-to-back converter. In the control algorithm, make the NP current on the rectifier side follow the reference NP current to adjust the NP potential balancing.
Baohui Ma +4 more
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2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe), 2017
This paper introduces seven-level Active Neutral-point-clamped (ANPC-7L) inverter first. Then, the paper decouples the two problems of floating capacitors voltage controlling and neutral-point potential balancing by using the concept of average state, proposes a novel neutral-point potential balancing model based on zero-sequence voltage injection ...
Weihui Sheng, Qiongxuan Ge
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This paper introduces seven-level Active Neutral-point-clamped (ANPC-7L) inverter first. Then, the paper decouples the two problems of floating capacitors voltage controlling and neutral-point potential balancing by using the concept of average state, proposes a novel neutral-point potential balancing model based on zero-sequence voltage injection ...
Weihui Sheng, Qiongxuan Ge
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2016 IEEE Energy Conversion Congress and Exposition (ECCE), 2016
Common mode voltage output is closely associated with switching states in three-phase three-wire neutral-point clamped inverter. Detailed analysis shows avoiding redundant states can effectively improve the common mode voltage, so this paper proposes a pulse width modulation (PWM) technique with zero redundant states to reduce the common mode voltage ...
Meng-jiang Tsai +4 more
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Common mode voltage output is closely associated with switching states in three-phase three-wire neutral-point clamped inverter. Detailed analysis shows avoiding redundant states can effectively improve the common mode voltage, so this paper proposes a pulse width modulation (PWM) technique with zero redundant states to reduce the common mode voltage ...
Meng-jiang Tsai +4 more
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2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018
Although the virtual space PWM and the dual wave modulation (DWM) method can eliminate the low frequency neutral point potential (NPP) fluctuation, which appears in some NPP control based on the nearest three vector PWM essentially, they will increase the switching frequency and fade the control ability of the NPP drift problem.
Bo Guan, Shinji Doki
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Although the virtual space PWM and the dual wave modulation (DWM) method can eliminate the low frequency neutral point potential (NPP) fluctuation, which appears in some NPP control based on the nearest three vector PWM essentially, they will increase the switching frequency and fade the control ability of the NPP drift problem.
Bo Guan, Shinji Doki
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Research on Neutral Point Potential Balance of Three-Level Inverter
2018 IEEE 2nd International Conference on Circuits, System and Simulation (ICCSS), 2018With the rapid development of new energy and the energy-saving technology, three-level inverter has gradually become the core of power conversion because of its large output capacity, good dynamic performance, low harmonic content and high inversion efficiency.
Jing Cui-Ru +4 more
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