Results 101 to 110 of about 7,564 (188)
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Zero-voltage switching for the neutral-point-clamped (NPC) inverter
IEEE Transactions on Industrial Electronics, 2002This 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.
null Xiaoming Yuan, I. Barbi
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ARCPI resonant snubber for the neutral-point-clamped (NPC) inverter
Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370), 2003This paper reports a resonant snubber for the neutral-point-clamped (NPC) inverter using the auxiliary resonant commutated pole inverter (ARCPI) technique. The proposal guarantees zero-voltage switching of the main switches and zero-current switching of the auxiliary switches without incurring any voltage or current spikes across or through the main ...
null Xiaoming Yuan +2 more
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Optimal power control strategies for neutral point clamped (NPC) inverter topology
IEEE Transactions on Industry Applications, 1992A programmed pulsewidth modulation (PWM) technique for selectively eliminating several lower-order harmonics at the output of a neutral point clamped (NPC) inverter topology is investigated. The switching function approach is utilized to derive relevant analytical expressions for input/output variables.
P. Enjeti, R. Jakkli
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IEEE transactions on industry applications, 2022
This article introduces a family of carrier-based pulse width modulation (PWM) schemes for three-level (3 L) inverter fed motor drive for low-speed operation.
Greeshma Nadh, A. Rahul S
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This article introduces a family of carrier-based pulse width modulation (PWM) schemes for three-level (3 L) inverter fed motor drive for low-speed operation.
Greeshma Nadh, A. Rahul S
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A New Three-Level Active Neutral-Point-Clamped (A-NPC) Multilevel Converter Topology
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019This paper proposes a new three-level active neutral-point-clamped (A-NPC) converter topology. The classic three-level A-NPC converter's phase-leg (per-phase) comprises the four line-frequency (LF) and two full-cycle-switched high-frequency (HF) pulse-width-modulation (PWM) power switches such as the insulated-gate bipolar transistors (IGBTs).
Vahid Dargahi +2 more
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Model of three level neutral point clamped converter (NPC) for grid connected photovoltaic systems
2015 38th International Convention on Information and Communication Technology, Electronics and Microelectronics (MIPRO), 2015Photovoltaic modules as direct converters of solar energy into electrical energy are typically connected to the power grid trough standard two level converters. A photovoltaic system can be connected to the power grid if it can satisfy the IEEE standardized conditions set by the power grid operator.
Novak, Mateja +2 more
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A soft commutated neutral-point-clamped (NPC) inverter: theory and experimentation
APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition, 2002A soft commutation circuit aimed to substitute for the conventional snubber in a GTO NPC inverter is presented in this paper. The small rating lossless auxiliary branch creates soft switching conditions for the main devices without having to subject them to extra voltage/current spikes or any modulation constraints.
null Xiaoming Yuan, I. Barbi
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IEEE transactions on power electronics, 2019
In this paper, a novel discontinuous pulsewidth modulation (DPWM) modulation strategy for a neutral-point-clamped (NPC) three-level converter (TLC) is proposed to reduce the switching loss, reduce common-mode voltage (CMV), and remove dc offset from the ...
Jinping Wang +6 more
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In this paper, a novel discontinuous pulsewidth modulation (DPWM) modulation strategy for a neutral-point-clamped (NPC) three-level converter (TLC) is proposed to reduce the switching loss, reduce common-mode voltage (CMV), and remove dc offset from the ...
Jinping Wang +6 more
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Evaluation of soft switching techniques for the neutral-point-clamped (NPC) inverter
30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321), 2003This paper evaluates the topological variants of the soft switching NPC inverter based on the resonant pole techniques. Conventional dissipative and regenerative snubbers as well as soft switching techniques for NPC inverter discussed in the past decade are reviewed first.
X. Yuan, H. Stemmler, I. Barbi
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IEEE transactions on power electronics, 2019
In order to reduce switching loss of neutral point clamped three-level inverter (NPC TLI), generally discontinuous pulsewidth modulation (DPWM) is used. But it can result in dc offset and ac ripple on neutral point (NP) voltage. So a novel pulse sequence
Weidong Jiang +5 more
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In order to reduce switching loss of neutral point clamped three-level inverter (NPC TLI), generally discontinuous pulsewidth modulation (DPWM) is used. But it can result in dc offset and ac ripple on neutral point (NP) voltage. So a novel pulse sequence
Weidong Jiang +5 more
semanticscholar +1 more source