Results 131 to 140 of about 587 (183)

Integrated Modulation of Dual-Parallel NPC Inverters With Eliminated CMV

IEEE Transactions on Industrial Electronics, 2022
An integrated zero common mode voltage (ZCMV) modulation algorithm is developed in this research for dual-parallel neutral-point-clamped (NPC) inverters treated as an integrated system. While the conventional methods achieve CMV elimination with the cost of worse harmonic performance, the proposed method guarantees zero CMV and better current quality ...
Weiwei Li, Xueguang Zhang, Dianguo Xu 0001   +2 more
openaire   +1 more source

Thirteen level cascaded NPC inverter

2010 IEEE 26-th Convention of Electrical and Electronics Engineers in Israel, 2010
The paper presents a novel, thirteen level, and cascaded, neutral point clamped inverter. The inverter is modulated by phase disposition (PD) carrier based PWM method. The load of the inverter is a synchronous machine. The simulation results for different voltage levels, different modulation frequencies, and different carrier frequencies are presented.
Raul Rabinovici, Dmitry Baimel, Jacek Tomasik, Adrian Zuckerberger   +3 more
openaire   +1 more source

Single phase ZVS PWM NPC inverter

XI Brazilian Power Electronics Conference, 2011
This paper presents a zero-voltage, pulse width modulated, NPC inverter, with active voltage clamping using only two auxiliary switches. The structure is particularly simple and robust. It is very attractive for high-power applications, single or multiple phases, due to neutral point accessible at the NPC topology.
Eduardo Maldaun Barreto, Marcello Mezaroba, Denis Silva Oliveira   +2 more
openaire   +1 more source

SVM algorithm of three-level NPC inverter

2008 3rd IEEE Conference on Industrial Electronics and Applications, 2008
On the basis of presenting the principles of space vector modulation (svm) of three-level neutral point clamped (NPC) inverter, an approach to implementation of SVM is proposed. The dwell times of vectors are calculated according to the volt-second balancing. A triangle is adopted to compare with three switching points.
null Shanmei Cheng, null Yajun Liu, null Bing Wu   +2 more
openaire   +1 more source

A single-phase asymmetrical NPC inverter topology

2016 13th International Conference on Power Electronics (CIEP), 2016
This paper presents a topology and a modulation scheme for a single-phase multi-level inverter referred as asymmetrical NPC. The proposed topology is formed by two legs, namely, a NPC and a standard two-level leg, where The NPC leg allows access to the middle point of the DC source.
M. J. Lopez-Sanchez, E. I. Pool, R. Cruz-Chan, G. Escobar, Juan F. Martinez-Garcia, A. A. Valdez-Fernandez, C. Villanueva   +6 more
openaire   +1 more source

Algebraic PWM Strategy of a Multilevel NPC Voltage Source Inverter

2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007
In this paper, the author's present one algorithm of algebraic PWM strategy for nine - level Neutral Point Clamping (NPC) Voltage Source Inverter (VSI) is presented. This algorithm uses a control model of the inverter developed previously by the authors. In the first part, we develop a working model of this inverter, without presumption on its control,
Dalila Boufassa, Farid Bouchafaa, El Madjid Berkouk, Mohamed Seghir Boucherit   +3 more
openaire   +1 more source

Detection of IGBT degradation in NPC inverter based on infrared thermography

Journal of Computational Methods in Sciences and Engineering, 2018
Multilevel inverters have been widely applied in high-voltage and high-power applications. Due to the increasing number of the switching devices in multilevel inverter, the probability of fault is increasing simultaneously. The development of reliable systems for fault detection that enable to diagnose a wide range of faults is a motivation of many ...
Danjiang Chen, Yutian Liu, Wei Zhang, Minhua Zheng, Shaozhong Zhang   +4 more
openaire   +1 more source

A general space-vector modulation technique for multilevel NPC inverter

2016 IEEE International Conference on Industrial Technology (ICIT), 2016
This paper presents a general and yet fast multilevel space-vector modulation technique, based on orientation of reference point in terms of hexagon lines. The main advantage of the proposed algorithm is the reduced volume of calculations that consequently makes it possible for implementing on cheaper microprocessors.
Pouria Qashqai, Hani Vahedi, Abdolreza Sheikholeslami, Kamal Al-Haddad   +3 more
openaire   +1 more source

Zero-voltage switching for the neutral-point-clamped (NPC) inverter

IEEE Transactions on Industrial Electronics, 2002
This paper proposes a transformer-assisted pulsewidth-modulation zero-voltage-switching neutral-point-clamped (NPC) inverter. With the assistance of a transformer-assisted small-rating lossless auxiliary circuit, the main switches work with zero-voltage switching without suffering from any voltage/current spikes, under simple explicit control.
Xiaoming Yuan, Ivo Barbi
openaire   +1 more source

Control Methods for Tripled Structure NPC Inverter

2013
Voltage waveform of single inverter contains more harmonics. In order to reduce the harmonic content, the H-bridge inverter with multiple structures was used to obtain a low harmonic voltage. However, this paper explored the multiple method based on the neutral point clamped inverter for obtaining the multiple circuit with lower harmonic content than ...
Cheng Zeng, Hong Zheng
openaire   +1 more source