A simple potential balancing strategy for neutral-point-clamped inverter fed direct torque control induction machines

Alias, Nor Faezah; Jidin, Auzani; Ismail, Huzainirah; Firdaus, R. N.; Rahim, M. Khairi; Razi, Atikah; Halim, Wahidah Abd

doi:10.1109/peds.2015.7203551

Cited by 6 publications

(2 citation statements)

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“…It can be noticed that, the time taken to apply short amplitude of vector to increase (or decrease) the 𝜓 𝑠 over one sampling period (Ts) will be equally divided into two; one for selecting (211) (or ( 110)) and another one ISSN: 2088-8694  for selecting (100) (or ( 221)). In so doing, the voltage of both capacitors can be balanced without using voltage sensors, as employed in [12].…”

Section: ∆𝜑 ̅ 𝑠 = (𝑣̅ 𝑠 − 𝛽(𝑖̅ 𝑠 )) ∆𝑡mentioning

confidence: 99%

“…This problem may solve to some extent by increase the capacitance value but at the same time, the total cost of the system will increase [7]- [11]. Hysteresis-based controller [12] and space vector modulation (SVM) [13], [14] are available topologies to balance the voltages across DC-bus capacitor. The SVM approach also offers a constant switching frequency, reduction of current ripple and flexible implementation for vector control [13].…”

Section: Introductionmentioning

confidence: 99%

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Multi-carrier switching strategy for high-bandwidth potential balancing control of multilevel inverters

Tahir

Jidin

Jamil

2021

IJPEDS

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<span lang="EN-US">This paper confers on investigation of a direct torque control (DTC) of induction motor drive by 3 level neutral point clamp (NPC) multilevel inverter. The imbalance problem may deteriorate the electric drive performances which might cause a short circuit condition. Various balancing control strategies were proposed, however, most of them employed complex space vector modulation (SVM) and hysteresis-based controller that generates variable switching frequencies. The proposed method will offer a reliable balancing control strategy with a constant switching frequency, and moreover, it will provide excellent electric drive performances. This research proposed a new multi carrier switching modulation strategy that establish a high-band-width control for neutral point potential in the NPC inverter. Potency of the proposed high-bandwidth potential balancing strategy is validated through the MATLAB/SIMULINK environment.</span>

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Section: ∆𝜑 ̅ 𝑠 = (𝑣̅ 𝑠 − 𝛽(𝑖̅ 𝑠 )) ∆𝑡mentioning

confidence: 99%