Results 281 to 290 of about 52,716 (352)
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2007 International Conference on Electrical Machines and Systems (ICEMS), 2007
This paper investigates the neutral point voltage balancing problem in three-level NPC PWM VSI theoretically. Current vector is introduced to model the disturbance of NP voltage due to middle voltage vectors and small voltage vectors. The ripple of NP voltage is consisting of two parts, one is low-frequency and the other is high frequency.
null Weidong Jiang +3 more
openaire +1 more source
This paper investigates the neutral point voltage balancing problem in three-level NPC PWM VSI theoretically. Current vector is introduced to model the disturbance of NP voltage due to middle voltage vectors and small voltage vectors. The ripple of NP voltage is consisting of two parts, one is low-frequency and the other is high frequency.
null Weidong Jiang +3 more
openaire +1 more source
IEEE transactions on industry applications, 2021
Multilevel inverters provide appealing advantages such as improved efficiency, superior thermal performance, better distribution of the switching and conduction power losses, smaller size of passive components including output ac filters and EMI filters,
A. Khoshkbar Sadigh +3 more
semanticscholar +1 more source
Multilevel inverters provide appealing advantages such as improved efficiency, superior thermal performance, better distribution of the switching and conduction power losses, smaller size of passive components including output ac filters and EMI filters,
A. Khoshkbar Sadigh +3 more
semanticscholar +1 more source
IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02, 2003
In this paper, the evolution and the control options of the neutral point potential in NPC inverters with SVPWM modulation are analysed. In this analysis, the different components that can be found in the phase current are taken into account: fundamental, DC current and harmonics.
O. Alonso +4 more
openaire +1 more source
In this paper, the evolution and the control options of the neutral point potential in NPC inverters with SVPWM modulation are analysed. In this analysis, the different components that can be found in the phase current are taken into account: fundamental, DC current and harmonics.
O. Alonso +4 more
openaire +1 more source
IEEE Transactions on Industrial Electronics, 2019
According to different clamping methods, nine modes (C_MODE1-9) of the traditional discontinuous pulsewidth modulation (DPWM) for neutral-point-clamped three-level converter have been revealed. Since traditional DPWM cannot balance neutral point (NP) voltage under the full range of modulation index (MI) and power factor (PF), two extended modes (E ...
Kewei Chen, Weidong Jiang, Peixia Wang
openaire +1 more source
According to different clamping methods, nine modes (C_MODE1-9) of the traditional discontinuous pulsewidth modulation (DPWM) for neutral-point-clamped three-level converter have been revealed. Since traditional DPWM cannot balance neutral point (NP) voltage under the full range of modulation index (MI) and power factor (PF), two extended modes (E ...
Kewei Chen, Weidong Jiang, Peixia Wang
openaire +1 more source
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
semanticscholar +1 more source
IEEE transactions on power electronics
Clamped multilevel inverters suffer significantly from neutral point (NP) voltage unbalancing in low power factor applications, which will lead to severe device overvoltage problems and affect its output performance.
Handi Yang +3 more
semanticscholar +1 more source
Clamped multilevel inverters suffer significantly from neutral point (NP) voltage unbalancing in low power factor applications, which will lead to severe device overvoltage problems and affect its output performance.
Handi Yang +3 more
semanticscholar +1 more source
Neutral-point voltage balance control and oscillation suppression for VIENNA rectifier
2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia), 2017In view of a three-phase/level boost rectifier, the performance of VIENNA rectifier is affected by the neutral-point (NP) voltage unbalance and oscillation. A novel strategy of zero-sequence component injection to balance the neutral-point voltage and suppress oscillation for VIENNA rectifier is proposed in this paper.
Jiajun Liu +4 more
openaire +1 more source
IEEE transactions on power electronics, 2019
In this paper, a neutral point (NP) voltage balancing scheme suitable for three phase 5-level active NP clamped and T-type NP clamped (TNPC) inverters is discussed.
T. T. Davis, A. Dey
semanticscholar +1 more source
In this paper, a neutral point (NP) voltage balancing scheme suitable for three phase 5-level active NP clamped and T-type NP clamped (TNPC) inverters is discussed.
T. T. Davis, A. Dey
semanticscholar +1 more source
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
openaire +1 more source
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
openaire +1 more source
European Conference on Cognitive Ergonomics, 2019
This paper presents an accurate control method of neutral current for neutral point voltage balancing in three-level neutral point-clamped (NPC) inverters considering digital control and PWM delay. A stable and reliable operation of NPC inverters demands
Hyun-Jun Lee, Sungmin Kim, Y. Yoon
semanticscholar +1 more source
This paper presents an accurate control method of neutral current for neutral point voltage balancing in three-level neutral point-clamped (NPC) inverters considering digital control and PWM delay. A stable and reliable operation of NPC inverters demands
Hyun-Jun Lee, Sungmin Kim, Y. Yoon
semanticscholar +1 more source