Results 261 to 270 of about 13,972,114 (292)

Improved multilevel inverter with neutral point potential balancing for high power application

2015 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS), 2015
This paper presents low harmonic distortion and neutral-point potential (NPP) balancing in multilevel inverter using multicarrier pulse width modulation (PWM) for medium-voltage high-power industrial ac drives. This method is applicable for five-level inverters or higher.
null Logapriya J., S. Mohamedyousuf
openaire   +1 more source

Neutral point potential and unity power factor control of NPC boost converters

Proceedings of Power Conversion Conference - PCC '97, 2002
Neutral-point clamped boost PWM power converters (NPCC) are able to reduce harmonic currents, without requiring the devices to be operated at a high switching frequency, and are suitable for high voltage systems because of their circuit structure.
S. Fukuda, Y. Matsumoto
openaire   +1 more source

Neutral point potential variation from the low voltage distribution electricity grids

2016 International Conference on Applied and Theoretical Electricity (ICATE), 2016
In low voltage distribution electricity grids is important to examine how to protect against hazardous voltages and currents that can occur with insulation degradation. It was found that the treatment of neutral defect is important in those regimes, the present paper aim to analyze the networks with isolated neutral.
Radu Porumb, Paul-Mihai Mircea, Cornel Toader, Georgiana Buica, Constantin Beiu, Ion Mircea   +5 more
openaire   +1 more source

Model Predictive Pulse Pattern Control with Integrated Balancing of the Neutral Point Potential

2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), 2019
A neutral-point-clamped inverter operated with optimized pulse patterns is considered with an induction machine. For this setup, a control method is proposed that achieves high-bandwidth control of the electromagnetic torque and machine magnetization through stator flux trajectory tracking while balancing the inverter's neutral point (NP) potential ...
Tobias Geyer, Vedrana Spudic
openaire   +1 more source

Compensation for the neutral-point potential variation in three-level space vector PWM

APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181), 2002
In performing the three-level space vector PWM, the neutral-point potential of the DC-link capacitors has to be controlled at whatever cases. But as it is nearly impossible to control the neutral-point potential exactly to the half of the DC-link voltage at all times, the inverter would produce an erroneous output voltage by this voltage unbalance.
null Jae Hyeong Seo, null Chang Ho Choi
openaire   +1 more source

An optimized neutral-point potential balancing algorithm for seven-level ANPC inverters

2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017
This paper decouples the floating capacitors voltage controlling and the neutral-point potential balancing of Seven-level Active Neutral-point-clamped (ANPC-7L) inverter by using the concept of average state, proposes a neutral-point potential balancing model based on zero-sequence voltage injection and derives the full controllable region of neutral ...
Weihui Sheng, Qiongxuan Ge
openaire   +1 more source

Leakage Current Suppression and Balance Control of Neutral Point Potential for Three‐Level Inverter

International Journal of Circuit Theory and Applications
ABSTRACTNonisolated three‐level inverter has the problem of leakage current and neutral‐point (NP) potential imbalance in photovoltaic grid‐connected system. Therefore, a new subregional vector‐optimized modulation strategy is proposed, which can be adopted to achieve leakage current suppression and NP potential balance control in full power factor and
Ningning Meng, Yongzhi Min, Zhilong Shi
openaire   +1 more source

A novel two-parameter modulation and neutral point potential control method for the three-level neutral point clamped inverter

2020
Öz ÜÇ DÜZEYLİ NÖTR NOKTASI BAĞLANTILI EVİRİCİ İÇİN İKİ PARAMETRELİ MODÜLASYON VE NÖTR NOKTASI DENETİM YÖNTEMİ Üstüntepe, Bülent Yüksek Lisans, Elektrik ve Elektronik Mühendisliği Bölümü Tez Yöneticisi: Yrd. Doç. Dr. Ahmet M. Hava Aralık 2005, 242 sayfa Bu tezde, üç düzeyli nötr noktası bağlantılı eviricinin nötr noktası gerilim kayması/dalgalanması ...
openaire   +1 more source

Neutral-point Potential Balancing Model and Algorithm in three-level Neutral-Point-Clamped Inverter

Australian Journal of Electrical and Electronics Engineering, 2012
Y. Wang, X. Wu, P. Dai, J. Zhou
openaire   +1 more source

A novel neutral-point potential balance control method based on voltage feedback for neutral-point clamped three-level inverter

International Journal of Electrical Power and Energy Systems, 2023
Chenhui Yang, Bo Fan
exaly