AI Chat Paper
Discover the SciOpen Platform and Achieve Your Research Goals with Ease.
Search articles, authors, keywords, DOl and etc.
{{expandStatus?'Exit ':''}}Advanced Search
(
Dead time is necessary for the coupled power switches to prevent shoot-through, especially in the modular multilevel converters (MMCs) with a large number of power switches. This paper proposes a dead-time effect suppression strategy for MMCs with nearest level modulation. The operational principles of MMCs are first analyzed. According to the operational features of MMCs, the method that removes a switching signal from the coupled switches and the reduced switching frequency voltage balancing algorithms (RSFVBAs) are mixed in the proposed method. In the intervals that are furthest away from the zero-crossing points (ZCP) of arm currents, the single switching signal method can completely eliminate the dead-time effect (DTE). Alternatively, the DTE is suppressed by the RSFVBA in intervals that are close to the ZCP. By the combination of the two methods, the dependence of the DTE suppression method on currents is reduced and the influences of ZCP are also released without degrading the normal operation performance of MMCs. Moreover, the output performance of MMCs is improved and the voltage stress on the arm inductor dramatically decreases. Finally, the validation of the method is verified by the simulation results with the professional tool Matlab/Simulink.
M. A. Tawfik, M. S. Irfan, A. Ahmed, and J. H. Park, “Modular multilevel converter with wireless magnetic power decoupling for three-phase MV adjustable-speed drives,” CSEE Journal of Power and Energy Systems, vol. 8, no. 5, pp. 1497–1507, Sep. 2022.
Z. G. Xu, B. B. Li, S. B. Wang, S. G. Zhang, and D. G. Xu, “Generalized single-phase harmonic state space modeling of the modular multilevel converter with zero-sequence voltage compensation,” IEEE Transactions on Industrial Electronics, vol. 66, no. 8, pp. 6416–6426, Aug. 2019.
W. B. Yang, Q. Song, and B. Zhao, “Energy storage requirement and low capacitance operation of unidirectional current H-bridge modular multilevel converters,” IEEE Transactions on Power Electronics, vol. 34, no. 12, pp. 11748–11759, Dec. 2019.
C. K. Liu, F. J. Deng, Q. S. Wang, Y. B. Wang, F. Blaabjerg, and Z. Wang, “Double half-bridge submodule-based modular multilevel converters with reduced voltage sensors,” IEEE Transactions on Power Electronics, vol. 36, no. 4, pp. 3643–3648, Apr. 2021.
K. Li, L. Q. Yuan, Z. M. Zhao, S. Z. Lu, and Y. M. Zhang, “Fault-tolerant control of MMC with hot reserved submodules based on carrier phase shift modulation,” IEEE Transactions on Power Electronics, vol. 32, no. 9, pp. 6778–6791, Sep. 2017.
A. Cichowski and J. Nieznanski, “Self-tuning dead-time compensation method for voltage-source inverters,” IEEE Power Electronics Letters, vol. 3, no. 2, pp. 72–75, Jun. 2005.
T. F. Qiu, X. H. Wen, and F. Zhao, “Adaptive-linear-neuron-based dead-time effects compensation scheme for PMSM drives,” IEEE Transactions on Power Electronics, vol. 31, no. 3, pp. 2530–2538, Mar. 2016.
Y. Zhao, W. Qiao, and L. Wu, “Dead-time effect analysis and compensation for a sliding-mode position observer-based sensorless IPMSM control system,” IEEE Transactions on Industry Applications, vol. 51, no. 3, pp. 2528–2535, May/Jun. 2015.
M. A. Herran, J. R. Fischer, S. A. Gonzalez, M. G. Judewicz, and D. O. Carrica, “Adaptive dead-time compensation for grid-connected PWM inverters of single-stage PV systems,” IEEE Transactions on Power Electronics, vol. 28, no. 6, pp. 2816–2825, Jun. 2013.
N. Urasaki, T. Senjyu, K. Uezato, and T. Funabashi, “An adaptive dead-time compensation strategy for voltage source inverter fed motor drives,” IEEE Transactions on Power Electronics, vol. 20, no. 5, pp. 1150–1160, Sep. 2005.
Z. Y. Tang and B. Akin, “Suppression of dead-time distortion through revised repetitive controller in PMSM drives,” IEEE Transactions on Energy Conversion, vol. 32, no. 3, pp. 918–930, Sep. 2017.
L. H. Chen and F. Z. Peng, “Dead-time elimination for voltage source inverters,” IEEE Transactions on Power Electronics, vol. 23, no. 2, pp. 574–580, Mar. 2008.
Y. K. Lin and Y. S. Lai, “Dead-time elimination of PWM-controlled inverter/converter without separate power sources for current polarity detection circuit,” IEEE Transactions on Industrial Electronics, vol. 56, no. 6, pp. 2121–2127, Jun. 2009.
Y. Wang, Q. Gao, and X. Cai, “Mixed PWM for dead-time elimination and compensation in a grid-tied inverter,” IEEE Transactions on Industrial Electronics, vol. 58, no. 10, pp. 4797–4803, Oct. 2011.
J. X. Yuan, Z. Zhao, B. C. Chen, C. Li, J. Wang, C. H. Tian, and Y. J. Chen, “An immune-algorithm-based dead-time elimination PWM control strategy in a single-phase inverter,” IEEE Transactions on Power Electronics, vol. 30, no. 7, pp. 3964–3975, Jul. 2015.
Q. Z. Yan, L. T. Xiao, X. B. Yuan, X. C. Zhang, C. Yuan, R. D. Zhao, and H. L. Xu, “A double-modulation-wave PWM with reduced dependency on current polarities for dead-time-effect elimination in three-level T-type converters,” IEEE Transactions on Power Electronics, vol. 36, no. 7, pp. 8413–8427, Jul. 2021.
N. Z. Diao, X. R. Sun, C. H. Song, Q. Zhang, and Z. K. Zhang, “A multimodulation times SVPWM for dead-time effect elimination in three-level neutral point clamped converters,” IEEE Transactions on Industrial Electronics, vol. 68, no. 7, pp. 5476–5485, Jul. 2021.
F. Chierchie, L. Stefanazzi, E. E. Paolini, and A. R. Oliva, “Frequency analysis of PWM inverters with dead-time for arbitrary modulating signals,” IEEE Transactions on Power Electronics, vol. 29, no. 6, pp. 2850–2860, Jun. 2014.
F. Chierchie, E. E. Paolini, and L. Stefanazzi, “Dead-time distortion shaping,” IEEE Transactions on Power Electronics, vol. 34, no. 1, pp. 53–63, Jan. 2019.
J. Ye, S. T. Huang, L. G. Liu, L. X. Li, J. B. Xu, and A. W. Shen, “Accurate harmonic calculation for digital SPWM of VSI with dead-time effect,” IEEE Transactions on Power Electronics, vol. 36, no. 7, pp. 7892–7902, Jul. 2021.
Z. X. Li, F. Q. Gao, F. Xu, X. Ma, Z. F. Chu, P. Wang, R. F. Gou, and Y. H. Li, “Power module capacitor voltage balancing method for a ±350-kV/1000-MW modular multilevel converter,” IEEE Transactions on Power Electronics, vol. 31, no. 6, pp. 3977–3984, Jun. 2016.
Q. R. Tu, Z. Xu, and L. Xu, “Reduced switching-frequency modulation and circulating current suppression for modular multilevel converters,” IEEE Transactions on Power Delivery, vol. 26, no. 3, pp. 2009–2017, Jul. 2011.
Z. Geng, M. X. Han, C. J. Xia, and L. Z. Kou, “A switching times reassignment-based voltage balancing strategy for submodule capacitors in modular multilevel HVDC converters,” IEEE Transactions on Power Delivery, vol. 37, no. 2, pp. 1215–1225, Apr. 2022.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
京公网安备11010802044758号