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2017 Asian Conference on Energy, Power and Transportation Electrification (ACEPT), 2017
A well-known problem of three-level neutral point clamped (NPC) inverter is the voltage imbalance in the dc-link capacitors. This paper proposes the dc-link capacitor voltage balancing method where a common offset voltage is injected. The offset voltage consists of a harmonic voltage and a magnitude difference between the upper and the lower capacitors.
Kyoung-Pil Kang +4 more
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A well-known problem of three-level neutral point clamped (NPC) inverter is the voltage imbalance in the dc-link capacitors. This paper proposes the dc-link capacitor voltage balancing method where a common offset voltage is injected. The offset voltage consists of a harmonic voltage and a magnitude difference between the upper and the lower capacitors.
Kyoung-Pil Kang +4 more
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Enhanced soft-switched T-type neutral-point clamped (T-NPC) inverter with reduced component number
Review of Scientific InstrumentsThis paper presents an enhanced soft-switched T-type neutral-point clamped inverter featuring a compact active snubber cell that delivers zero-voltage transition turn-on and zero-voltage switching (ZVS) turn-off for the main switches, while auxiliary switches operate with zero-current switching turn-on and ZVS turn-off.
Mehmet Cihat Ozgenel +2 more
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IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
This paper is to study the control scheme for neutral-point-clamping three-level (NPC-3L) inverters fed dual three-phase permanent magnet synchronous motor (PMSM) drives based on vector space decomposition (VSD). The key is to propose a novel VSD based space vector modulation (SVM) strategy for the dual-three phase drives.
Zheng Wang +3 more
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This paper is to study the control scheme for neutral-point-clamping three-level (NPC-3L) inverters fed dual three-phase permanent magnet synchronous motor (PMSM) drives based on vector space decomposition (VSD). The key is to propose a novel VSD based space vector modulation (SVM) strategy for the dual-three phase drives.
Zheng Wang +3 more
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2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
A modified virtual space vector based DC-link voltage balancing strategy is proposed in this paper. The summation of the three phase currents for the virtual vector needs not to be zero and it also keeps the two capacitor voltages balanced over a wider range of load variations.
Abhijit Choudhury +2 more
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A modified virtual space vector based DC-link voltage balancing strategy is proposed in this paper. The summation of the three phase currents for the virtual vector needs not to be zero and it also keeps the two capacitor voltages balanced over a wider range of load variations.
Abhijit Choudhury +2 more
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2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
A reduced common mode voltage (CMV) based DC-link voltage balancing strategy is proposed for a neutral point clamped (NPC) three-level inverter with permanent magnet synchronous machine. Compared to the earlier proposed strategy, it completely eliminates the V dc /2 corresponding CMV by eliminating the two zero voltage vectors (PPP, NNN) from the space
Abhijit Choudhury, Pragasen Pillay
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A reduced common mode voltage (CMV) based DC-link voltage balancing strategy is proposed for a neutral point clamped (NPC) three-level inverter with permanent magnet synchronous machine. Compared to the earlier proposed strategy, it completely eliminates the V dc /2 corresponding CMV by eliminating the two zero voltage vectors (PPP, NNN) from the space
Abhijit Choudhury, Pragasen Pillay
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IEEE Transactions on Industry Applications, 2016
A modified-virtual-space-vector-based dc-link voltage balancing strategy is proposed in this paper for a three-level inverter. In the proposed strategy, the summation of the three-phase currents for virtual vector needs not to be zero and it also keeps the two capacitor voltages balanced with wider range of load variations.
Abhijit Choudhury +2 more
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A modified-virtual-space-vector-based dc-link voltage balancing strategy is proposed in this paper for a three-level inverter. In the proposed strategy, the summation of the three-phase currents for virtual vector needs not to be zero and it also keeps the two capacitor voltages balanced with wider range of load variations.
Abhijit Choudhury +2 more
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IEEE Transactions on Industry Applications, 2016
This paper presents a hybrid pulse width modulation-based discontinuous modulation (D-HPWM) strategy with dc-link voltage balancing for a three-level neutral-point-clamped (NPC) traction inverter drive. The results are then compared with continuous-hybrid-PWM (C-HPWM) to check the performance improvement.
Abhijit Choudhury +2 more
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This paper presents a hybrid pulse width modulation-based discontinuous modulation (D-HPWM) strategy with dc-link voltage balancing for a three-level neutral-point-clamped (NPC) traction inverter drive. The results are then compared with continuous-hybrid-PWM (C-HPWM) to check the performance improvement.
Abhijit Choudhury +2 more
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2015 IEEE Vehicle Power and Propulsion Conference (VPPC), 2015
A DC-link voltage balancing algorithm for a three- level neutral point clamped (NPC) traction inverter drive with interior permanent magnet synchronous machine (IPMSM) is proposed. The proposed strategy is able to reduce the neutral point potential fluctuation (NPPF) considerably compared to the conventional strategy with field weakening region, when ...
Abhijit Choudhury, Pragasen Pillay
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A DC-link voltage balancing algorithm for a three- level neutral point clamped (NPC) traction inverter drive with interior permanent magnet synchronous machine (IPMSM) is proposed. The proposed strategy is able to reduce the neutral point potential fluctuation (NPPF) considerably compared to the conventional strategy with field weakening region, when ...
Abhijit Choudhury, Pragasen Pillay
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Low leakage current single-phase PV inverters with universal neutral-point-clamping method
Applied Power Electronics Conference, 2016Liwei Zhou, F. Gao
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Improved Performance of a Neutral Point Clamp (NPC) Five -Level-Inverter
2023 9th IEEE India International Conference on Power Electronics (IICPE), 2023openaire +1 more source