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Journal articles on the topic 'Phase-shifted PWM'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 June 2025

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1

Vlatkovic, V., J. A. Sabate, R. B. Ridley, F. C. Lee, and B. H. Cho. "Small-signal analysis of the phase-shifted PWM converter." IEEE Transactions on Power Electronics 7, no. 1 (1992): 128–35. http://dx.doi.org/10.1109/63.124585.

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2

Naderi, R., and A. Rahmati. "Phase-Shifted Carrier PWM Technique for General Cascaded Inverters." IEEE Transactions on Power Electronics 23, no. 3 (2008): 1257–69. http://dx.doi.org/10.1109/tpel.2008.921186.

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3

Reddy, Ch Lokeshwar, P. Satish Kumar, and M. Sushama. "Performance Comparison of Star Connected Cascaded STATCOM Using Different PWM Techniques." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (2017): 1303. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1303-1319.

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<p><span>Five control algorithms are presented in this paper for STATCOM that meets the requirement of load reactive power and correspondingly voltage balancing of isolated dc capacitors for H-bridges. The control techniques used for an inverter in this paper are Sinusoidal Phase Shifted Carrier (SPSC) PWM, Sinusoidal Phase Disposition (SPD) PWM Third Harmonic Injected Phase Shifted Carrier (THIPSC) PWM, Space Vector Phase Shifted Carrier (SVPSC) PWM, and Space Vector Phase Disposition (SVPD) PWM techniques. The STATCOM performance for the different load changes is simulated in MATLAB environment. The performance parameters such as balancing the DC link voltage, THD for the STATCOM output currents, voltages, and reactive components supplied by the STATCOM to the load are compared for all the control strategies.</span></p>

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4

Xiao, Muxuan, Qianming Xu, and Honglin Ouyang. "An Improved Modulation Strategy Combining Phase Shifted PWM and Phase Disposition PWM for Cascaded H-Bridge Inverters." Energies 10, no. 9 (2017): 1327. http://dx.doi.org/10.3390/en10091327.

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5

Deekshit, K. K. C., and M. Vijaya Krishna. "Comparison of Phase Shifted PWM Techniques for Cascaded Multilevel Inverter." i-manager's Journal on Electronics Engineering 3, no. 1 (2012): 36–41. http://dx.doi.org/10.26634/jele.3.1.2036.

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6

Ghias, Amer M. Y. M., Josep Pou, Gabriel Jose Capella, Pablo Acuna, and Vassilios G. Agelidis. "On Improving Phase-Shifted PWM for Flying Capacitor Multilevel Converters." IEEE Transactions on Power Electronics 31, no. 8 (2016): 5384–88. http://dx.doi.org/10.1109/tpel.2016.2521803.

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7

Feng, Chunmei, Jun Liang, and Vassilios G. Agelidis. "Modified Phase-Shifted PWM Control for Flying Capacitor Multilevel Converters." IEEE Transactions on Power Electronics 22, no. 1 (2007): 178–85. http://dx.doi.org/10.1109/tpel.2006.886600.

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8

Tariq, Mohd, Mohammad Meraj, Abdul Azeem, Ali I. Maswood, Atif Iqbal, and Bharatiraja Chokkalingam. "Evaluation of Level-Shifted and Phase-Shifted PWM Schemes for Seven Level Single-Phase Packed U Cell Inverter." CPSS Transactions on Power Electronics and Applications 3, no. 3 (2018): 232–42. http://dx.doi.org/10.24295/cpsstpea.2018.00023.

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9

Haijun, Tao, Zhang Yiming, and Ren Xiguo. "Full-Bridge DC-DC Converter Using Asymmetric Phase-Shifted PWM Control." Open Automation and Control Systems Journal 7, no. 1 (2015): 1909–15. http://dx.doi.org/10.2174/1874444301507011909.

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10

Schutten, M. J., and D. A. Torrey. "Improved small-signal analysis for the phase-shifted PWM power converter." IEEE Transactions on Power Electronics 18, no. 2 (2003): 659–69. http://dx.doi.org/10.1109/tpel.2003.809539.

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11

Diao, Xiaoguang, Fei Liu, Yuan Song, Yizhan Zhuang, Mengyue Xu, and Xiaoming Zha. "Modified Phase-Shifted PWM for Cascaded Half-Bridges of Photovoltaic Application." IEEE Access 8 (2020): 41719–32. http://dx.doi.org/10.1109/access.2020.2977351.

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12

Capella, Gabriel J., Josep Pou, Salvador Ceballos, Georgios Konstantinou, Jordi Zaragoza, and Vassilios G. Agelidis. "Enhanced Phase-Shifted PWM Carrier Disposition for Interleaved Voltage-Source Inverters." IEEE Transactions on Power Electronics 30, no. 3 (2015): 1121–25. http://dx.doi.org/10.1109/tpel.2014.2338357.

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13

A. Subki, A. Shamsul Rahimi, Zahariah Manap, Mohd Zaidi Tumari, et al. "Analysis on three phase cascaded H-bridge multilevel inverter based on sinusoidal and third harmonic injected pulse width modulation via level shifted and phase shifted modulation technique." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (2021): 160. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp160-169.

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This work proposes a comparative analysis of sinusoidal and third harmonic injected reference signal modulation accompany with level-shifted PWM technique named as phase disposition (LSPD), phase opposition disposition (LSPOD), and alternate phase opposition disposition (LSAPOD) and phase-shifted PWM technique. Switching pulses from both reference signal and PWM technique have been fed into three phase eleven level cascaded H-bridge multilevel inverter (CHBMLI) fed on a resistive-inductive load with the modulation depth (MD) set to varied from 80% to 100%. For voltage source inverter, total harmonic distortion (THD) content is critical and must be within the allowable range. To prove the feasibility of the reference signal with carrier signal schemes, the entire simulation of the modulation techniques is established and conducted via the Simulink environment. According to the analyzed result, the performance is acceptable in terms of %THDV and %THDI values. Simulation analysis also indicates, at full modulation depth, due to higher fundamental output voltage component produces via the THIPWM modulation technique compared to the SPWM technique, this causes higher %THDV value.

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14

Sochor, Paul, and Hirofumi Akagi. "Theoretical and Experimental Comparison Between Phase-Shifted PWM and Level-Shifted PWM in a Modular Multilevel SDBC Inverter for Utility-Scale Photovoltaic Applications." IEEE Transactions on Industry Applications 53, no. 5 (2017): 4695–707. http://dx.doi.org/10.1109/tia.2017.2704539.

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15

Ilves, Kalle, Lennart Harnefors, Staffan Norrga, and Hans-Peter Nee. "Analysis and Operation of Modular Multilevel Converters With Phase-Shifted Carrier PWM." IEEE Transactions on Power Electronics 30, no. 1 (2015): 268–83. http://dx.doi.org/10.1109/tpel.2014.2321049.

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16

Akhmetov, Zhansen, Manel Hammami, Gabriele Grandi, and Alex Ruderman. "On PWM Strategies and Current THD for Single- and Three-Phase Cascade H-Bridge Inverters with Non-Equal DC Sources." Energies 12, no. 3 (2019): 441. http://dx.doi.org/10.3390/en12030441.

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Cascade H-bridge (CHB) inverter is an attractive choice for integration of DC sources of different nature, e.g., for distributed generation with energy storage, photovoltaic generation, etc. In general, non-equal DC voltage sources can affect the total harmonic distortion (THD) of the CHB by introducing undesirable low-frequency subharmonics. This paper investigates different level-shifted (LS) and phase-shifted (PS) pulse width modulation (PWM) strategies for single- and three-phase cascade H-bridge inverters with non-equal DC sources from the load current THD minimization perspective. The best current quality is provided by LS PWM, as reported in the literature. The paper provides a simple time domain explanation of LS PWM superiority. However, PS PWM may be a preferable choice for practical applications due to fair power and loss sharing across individual H-bridges. The paper explains how to obtain the best current quality by PS PWM carriers’ order arrangement (DC sources switching sequence selection).

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17

Lim, Ziyou, Ali I. Maswood, and Gabriel H. P. Ooi. "Modular-Cell Inverter Employing Reduced Flying Capacitors With Hybrid Phase-Shifted Carrier Phase-Disposition PWM." IEEE Transactions on Industrial Electronics 62, no. 7 (2015): 4086–95. http://dx.doi.org/10.1109/tie.2014.2378753.

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18

Yang, Guorun, Fei Xiao, Xuexin Fan, Ruitian Wang, and Jilong Liu. "Three-Phase Three-Level Phase-Shifted PWM DC–DC Converter for Electric Ship MVDC Application." IEEE Journal of Emerging and Selected Topics in Power Electronics 5, no. 1 (2017): 162–70. http://dx.doi.org/10.1109/jestpe.2016.2620282.

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19

Oleschuk, Valentin, Gabriele Grandi, and Padmanaban Sanjeevikumar. "Simulation of Processes in Dual Three-Phase System on the Base of Four Inverters with Synchronized Modulation." Advances in Power Electronics 2011 (December 14, 2011): 1–9. http://dx.doi.org/10.1155/2011/581306.

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Novel method of space-vector-based pulse-width modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive on the base of asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage-source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC sources. Detailed MATLAB-based simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.

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20

Oleschuk, Valentin, and Gabriele Grandi. "Six-phase motor drive supplied by four voltage source inverters with synchronized space-vector PWM." Archives of Electrical Engineering 60, no. 4 (2011): 445–58. http://dx.doi.org/10.2478/v10171-011-0037-0.

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Six-phase motor drive supplied by four voltage source inverters with synchronized space-vector PWMNovel method of space-vector-based pulsewidth modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive based on asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC-sources. Simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.

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21

Cheng, Qian, Chenchen Wang, and Jian Wang. "Analysis on Displacement Angle of Phase-Shifted Carrier PWM for Modular Multilevel Converter." Energies 13, no. 24 (2020): 6743. http://dx.doi.org/10.3390/en13246743.

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This paper provides theoretical and experimental discussions on the characteristics of the modular multilevel converter (MMC) when phase-shifted carrier sinusoidal pulse-width modulation (PSC-SPWM) is applied. Harmonic-cancellation characteristics of output voltage and circulating current are analyzed on the basis of a general implementation of PSC-SPWM with two freedom displacement angles. Five available PSC-SPWM schemes with different carrier displacement angles were obtained, and a detailed performance comparison about output voltage and circulating current harmonic characteristics is presented. On the basis of the equivalent circuit with ideal transformer representation of the SMs, capacitor voltages affected by PSC-SPWM schemes are also briefly analyzed. The proposed PSC-SPWM schemes can unify two different cases of odd and even SM situations for output voltage and circulating current harmonic minimization, respectively. Lastly, the optimal schemes for practical MMC application were verified by simulation and experiments on an MMC prototype.

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22

Shibano, Yuji, Joao I. Yutaka Ota, Naoto Niimura, and Hirofumi Akagi. "A Phase-Shifted PWM STATCOM Using the Modular Multilevel Cascade Converter (MMCC-SSBC)." IEEJ Transactions on Industry Applications 133, no. 9 (2013): 928–35. http://dx.doi.org/10.1541/ieejias.133.928.

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23

Shibano, Yuji, Joao I. Yutaka Ota, and Hirofumi Akagi. "A Phase-Shifted PWM STATCOM Using the Modular Multilevel Cascade Converter (MMCC-SSBC)." IEEJ Transactions on Industry Applications 133, no. 9 (2013): 936–42. http://dx.doi.org/10.1541/ieejias.133.936.

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24

Marquez, Abraham, Jose I. Leon, Sergio Vazquez, et al. "Variable-Angle Phase-Shifted PWM for Multilevel Three-Cell Cascaded H-Bridge Converters." IEEE Transactions on Industrial Electronics 64, no. 5 (2017): 3619–28. http://dx.doi.org/10.1109/tie.2017.2652406.

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25

Lee, Il-Oun, and Gun-Woo Moon. "Phase-Shifted PWM Converter With a Wide ZVS Range and Reduced Circulating Current." IEEE Transactions on Power Electronics 28, no. 2 (2013): 908–19. http://dx.doi.org/10.1109/tpel.2012.2205408.

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26

Ghias, Amer M. Y. M., Josep Pou, Mihai Ciobotaru, and Vassilios G. Agelidis. "Voltage-Balancing Method Using Phase-Shifted PWM for the Flying Capacitor Multilevel Converter." IEEE Transactions on Power Electronics 29, no. 9 (2014): 4521–31. http://dx.doi.org/10.1109/tpel.2013.2285387.

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27

Wang, Kui, Lie Xu, Zedong Zheng, and Yongdong Li. "Capacitor Voltage Balancing of a Five-Level ANPC Converter Using Phase-Shifted PWM." IEEE Transactions on Power Electronics 30, no. 3 (2015): 1147–56. http://dx.doi.org/10.1109/tpel.2014.2320985.

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28

Ghodke, D. V., K. Chatterjee, and B. G. Fernandes. "Three-Phase Three Level, Soft Switched, Phase Shifted PWM DC–DC Converter for High Power Applications." IEEE Transactions on Power Electronics 23, no. 3 (2008): 1214–27. http://dx.doi.org/10.1109/tpel.2008.920881.

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29

Wang, Hui, Ren Bin Feng, and Xiao Long Zhao. "The Circuit Design of the DC/DC Stage of Aviation Static Converter." Applied Mechanics and Materials 513-517 (February 2014): 4449–53. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.4449.

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This paper reviews the state of development of aviation power and aviation static converter. Considering the urgent need of planes to aviation static converter of high voltage, large current and high power output, this paper mainly studied the DC/DC stage of high voltage dc aviation static converter, and designed the phase shifted ZVS PWM full-bridge converter with two clamping diodes as the basic topological cell of the first stage of the two-stage static converter. Meanwhile the paper analyzed the working principle of the phase shifted ZVS PWM full-bridge converter with two clamping diodes, and then a simulation was run by using the software Saber, which proved theoretical analysis right.

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30

Choi, Jong-Yun, and Byung-Moon Han. "An Improved Phase-Shifted Carrier PWM for Modular Multilevel Converters with Redundancy Sub-Modules." Journal of Power Electronics 16, no. 2 (2016): 473–79. http://dx.doi.org/10.6113/jpe.2016.16.2.473.

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31

PADMANABHAN, S., Y. SUKHI, and Y. JEYASHREE. "Quasi-Square Wave Mode Phase-Shifted PWM LCC Resonant Converter for Regulated Power Supply." Engineering 01, no. 03 (2009): 201–10. http://dx.doi.org/10.4236/eng.2009.13024.

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32

Zhang, Jianzhong, Shuai Xu, Xing Hu, and Yaodong Zhu. "Voltage Balancing Control of Hybrid Stacked Multicell Converters Based on Modified Phase-Shifted PWM." IEEE Access 7 (2019): 25589–602. http://dx.doi.org/10.1109/access.2019.2900333.

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33

Lee, Eui-Jae, Seok-Min Kim, and Kyo-Beum Lee. "Modified Phase-Shifted PWM Scheme for Reliability Improvement in Cascaded H-Bridge Multilevel Inverters." IEEE Access 8 (2020): 78130–39. http://dx.doi.org/10.1109/access.2020.2989694.

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34

Fukuda, Hiroya, Hiroshi Takano, Takanobu Hatakeyama, and Mutsuo Nakaoka. "Application of Repetitive Learning Control Scheme to Phase-shifted PWM Resonant DC-DC Converter." IEEJ Transactions on Electronics, Information and Systems 116, no. 11 (1996): 1267–75. http://dx.doi.org/10.1541/ieejeiss1987.116.11_1267.

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35

Chen, Chih-Chieh, Cheng-Lun Chen, Jing-Xie Chang, and Cheng-Fu Yang. "LPV Gain-scheduling Control for a Phase-shifted PWM Full-bridge Soft Switched Converter." IFAC Proceedings Volumes 47, no. 3 (2014): 6135–40. http://dx.doi.org/10.3182/20140824-6-za-1003.02377.

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36

Ghias, Amer M. Y. M., Josep Pou, and Vassilios G. Agelidis. "An Active Voltage-Balancing Method Based on Phase-Shifted PWM for Stacked Multicell Converters." IEEE Transactions on Power Electronics 31, no. 3 (2016): 1921–30. http://dx.doi.org/10.1109/tpel.2015.2439280.

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37

Choi, J., B. Han, and H. Kim. "New Scheme of Phase-Shifted Carrier PWM for Modular Multilevel Converter With Redundancy Submodules." IEEE Transactions on Power Delivery 31, no. 1 (2016): 407–9. http://dx.doi.org/10.1109/tpwrd.2015.2473101.

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38

Cheng, Qian, Chenchen Wang, and Zhuo Chen. "A Dual Modulation Waveform PWM Combined With Phase-Shifted Carriers in Stacked Multicell Converter." IEEE Transactions on Power Electronics 36, no. 12 (2021): 14456–65. http://dx.doi.org/10.1109/tpel.2021.3088463.

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39

Hasabelrasul, Hashim, and Xiangwu Yan. "Comparison of Multicarrier PWM Techniques for Cascaded H-Bridge Multilevel Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 861. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp861-868.

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<p>One of the preferred choices of electronic power conversion for high power applications are multilevel inverters topologies finding increased attention in industry. Cascaded H-Bridge multilevel inverter is one of these topologies reaching the higher output voltage, power level and higher reliability due to its modular topology. Level Shifted Carrier Pulse Width Modulation (LSCPWM) and Phase Shifted Carrier Pulse Width Modulation are used generally for switching cascaded H-bridge (CHB) multilevel inverters. This paper compares LSCPWM and PSCPWM in terms of total harmonics distortion (THD) and output voltage among inverter cells. Simulation for 21-level CHB inverter is carried out in MATLAB/SIMULINK and simulation results are presented.</p>

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40

Lare, Pakedam, Byamakesh Nayak, Srikanta Dash, and Jiban Ballav Sahu. "Adaptive Phase-Shifted PWM based on Particle Swarm Optimization for Cascaded H-Bridge Inverter with Unequal Dc-link Voltages." International Journal of Engineering & Technology 7, no. 4.15 (2018): 469. http://dx.doi.org/10.14419/ijet.v7i4.15.25756.

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The cascaded H-Bridge Multilevel Inverter has been found a promising technology in industrial applications because of its higher voltage with less distortion production. Various PWMs techniques have been proposed to push the harmonics frequencies higher than the switching frequency and thus reduces the THD as compared to non-carrier control technique based upon grid frequency. The Phase-Shifted PWM technique has an advantage over others PWM techniques because its harmonics orders are multiples of switching frequency and also depend on the number of levels of the inverter. The phase shifting angle is uniform when the equal voltage sources are adopted. However, in applications where sets of different voltage source levels feed the H-Bridge cells, the Phase Shifted PWM suffers its high order harmonics elimination capability. As a solution to alleviate this problem, an adaptive variable angle approach is proposed in this paper using Particle Swarm Optimization (PSO) algorithm to eliminate desired higher order harmonics. The algorithm is used to minimize the cost function based on high order sideband harmonics elimination equations. The results through MATLAB/Simulink environment shown in this paper confirm the reduction of sideband harmonics of higher orders, and the overall THD.

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41

Suroso, Suroso, Daru Tri Nugroho, Abdullah Nur Azis, and Toshihiko Noguchi. "Simplified five-level voltage source inverter with level-phase-shifted carriers based modulation technique." Indonesian Journal of Electrical Engineering and Computer Science 13, no. 2 (2019): 461. http://dx.doi.org/10.11591/ijeecs.v13.i2.pp461-468.

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<p>A simplified circuit topology of the five-level pulse width modulation (PWM) inverter for DC-AC power conversion with no-isolated DC voltage sources and reduced switching device number is presented in this paper. The inverter circuit is based on the three-level H-bridge inverter configuration. The developed five-level inverter needs only five controlled power switches and four isolated gate drive circuits. Furthermore, the proposed topology does not require bidirectional power semiconductor controlled switches, hence a conventional discrete power MOSFETs or IGBTs can be used to build the inverter circuits. To obtain a better quality output voltage waveform, the level-phase-shifted carriers based sinusoidal pulse width modulation control was applied to produce a five-level PWM voltage waveform. The proposed inverter circuit was examined by using computer simulation with Power PSIM software. The basic principle operation of the inverter circuit was verified experimentally in laboratory using two non-isolated DC voltage sources as the inputs of the inverter’s prototype circuit. Some analysis of inverter’s output waveforms are provided and discussed. <em></em></p>

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42

Tsunoda, Asuka, Youhei Hinago, and Hirotaka Koizumi. "Level- and Phase-Shifted PWM for Seven-Level Switched-Capacitor Inverter Using Series/Parallel Conversion." IEEE Transactions on Industrial Electronics 61, no. 8 (2014): 4011–21. http://dx.doi.org/10.1109/tie.2013.2286559.

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43

Sahoo, Saroj Kumar, and Tanmoy Bhattacharya. "Phase-Shifted Carrier-Based Synchronized Sinusoidal PWM Techniques for a Cascaded H-Bridge Multilevel Inverter." IEEE Transactions on Power Electronics 33, no. 1 (2018): 513–24. http://dx.doi.org/10.1109/tpel.2017.2669084.

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44

Wang, Kui, Zedong Zheng, Nianzhou Liu, and Yongdong Li. "An Improved Phase-Shifted PWM for a Five-Level Hybrid-Clamped Converter With Optimized THD." IEEE Transactions on Industry Applications 56, no. 1 (2020): 455–64. http://dx.doi.org/10.1109/tia.2019.2948805.

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45

Pattanaik, Balachandra, and S. Murugan. "Cascaded H-Bridge Seven Level Inverter using Carrier Phase Shifted PWM with Reduced DC sources." International Journal of MC Square Scientific Research 9, no. 3 (2017): 30–39. http://dx.doi.org/10.20894/ijmsr.117.009.003.005.

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46

Moisseev, S., S. Hamada, and M. Nakaoka. "Full-bridge soft-switching phase-shifted PWM DC–DC power converter using tapped inductor filter." Electronics Letters 39, no. 12 (2003): 924. http://dx.doi.org/10.1049/el:20030604.

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47

Awalludin, A., and C. L. Toh. "Harmonic Mitigation in Traction Supply Substation Using Cascaded H-Bridge Converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 4 (2018): 1745. http://dx.doi.org/10.11591/ijpeds.v9.i4.pp1745-1754.

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<span lang="EN-US">The conventional three-level inverter has been proposed to act as a recuperating converter in Traction Supply Substation. This converter is mainly used to feed back the regenerative braking energy to the grid. However, passive filter is desired to mitigate the current and voltage harmonics. Therefore, this paper investigates the possibility to use a seven-level Cascaded H-Bridge (CHB) converter as the recuperating converter without additional filtering. The proposed converter is modeled with MATLAB/Simulink simulation software. It is then simulated with two potential modulation schemes, namely Phase-Shifted PWM (PS-PWM) and Phase-Disposition PWM (PD-PWM). The quality of AC waveforms produced by these two modulation methods is compared and studied. The results show that PS-PWM technique is preferable for this application as it offered a clean AC current waveform with less than 5% harmonic distortion. However, a twenty-one-level CHB was predicted to comply with the 8% voltage harmonic requirement.</span>

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48

Xu, Guo Hua, Ying Zhang, Ming Dong, and Qing De Meng. "The Output Researching of a Cascaded Multilevel Class-D Power Amplifier." Advanced Materials Research 482-484 (February 2012): 3–10. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.3.

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A high efficiency switch-mode power amplifier based on a cascaded multicell multilevel circuit topology is introduced in the paper. A multicell topology being operated in a unipolar phase-shifted PWM control to switch-mode amplifier system is introduced. After analysising a single-phase H-bridge unipolar PWM inverter’s output, the paper emphasis on the researching of the output of a Cascaded Multilevel Class-D Power Amplifier. The paper analyzes the advanced characteristic of the cascaded multilevel technique. Then a cascaded multilevel class-D power amplifier is built in the laboratory. The result of measurement shows a good following performance and stability.

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49

Su, Jian Yong, Jin Bo Yang, and Gui Jie Yang. "Research on Vector Control and PWM Technique of Six-Phase PMSM." Advanced Materials Research 516-517 (May 2012): 1626–31. http://dx.doi.org/10.4028/www.scientific.net/amr.516-517.1626.

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The mathematic model that based on decoupling vector space for six-phase permanent magnet synchronous motor (PMSM) is established. The six-phase PMSM is designed with two sets of Y-connected windings phase shifted by 30 electrical degrees. In the model, the variables of the motor are mapped to the α-β subspace associated with the electromechanical energy conversion and z1-z2 o1-o2 subspace that has nothing to do with the energy conversion subspace in the model. The model implies that different current harmonics have different effects on electromechanical energy conversion. The vector control scheme for six-phase PMSM is presented, in which the currents in the subspace α-β and z1-z2 are controlled in closed loop. A space vector pulse width modulation (SVPWM) algorithm of six-phase voltage-source inverter based on adjacent four largest voltage vectors is discussed. The voltage in α-β and z1-z2 can be modulated simultaneously. Through the simulation and experiment analysis, the vector control method and PWM technique for six-phase PMSM are proved to be feasible and effective.

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Li, Yi Dan, Wen Sheng Lu, Ming Liang Guo, and Hong Yang Liu. "Application of Carrier-Wave PWM Scheme on CHB-Based STATCOM." Advanced Materials Research 433-440 (January 2012): 5767–74. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.5767.

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Abstract:

Two kinds of multiple carrier-wave PWM schemes are analyzed and compared in detail. The phase-shifted PWM method is proved to be suitable to the cascaded H-bridge (CHB) inverter-based STATCOM because of the same device switching frequency and conduction time. More harmonics can be eliminated and device power losses can be reduced. Based on this modulation scheme, a novel dc capacitor voltage detection and balance control is developed. The simulation is performed in Simulink environment and the experiment prototype based on DSP is built. The simulation and experiment results show the correctness and feasibility of the proposed methods.

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