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Content Provider | IET Digital Library |
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Author | Maiti, Dipten Biswas, Sujit K. |
Abstract | A new inverter topology is presented in the paper, which produces a reduced low-order harmonic voltage waveform because of a natural harmonic cancellation process. Two switches of each limb operate at low switching frequency, whereas the other two switches of the same limb operate at higher switching frequency in conjunction with two additional capacitors. The four switches in each limb are controlled in such a way that the sequence of switching along with the voltage of two additional capacitors cancels out the low-frequency harmonics, thereby creating a pulse-width modulation (PWM) voltage with reduced low-order harmonics at the output with respect to the dc midpoint. By selection of the PWM pattern, the magnitude of fundamental voltage produced at the output can be higher than what would be achieved using sinusoidal PWM from the same dc bus voltage, without bothering about its inherent lower-order harmonics as they would be anyway cancelled. It is thus possible to achieve maximum possible dc bus utilisation theoretically. |
Starting Page | 1851 |
Ending Page | 1861 |
Page Count | 11 |
ISSN | 17554535 |
Volume Number | 6 |
e-ISSN | 17554543 |
Issue Number | Issue 9, Nov (2013) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/6/9 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0756 |
Journal | IET Power Electronics |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Capacitor Dc Bus Utilisation Dc Bus Voltage Harmonics Suppression Low Switching Frequency Low-frequency Harmonics Natural Harmonic Cancellation Process Power Electronics Power Supply Pulse-width Modulation Voltage PWM Invertors PWM Pattern PWM Voltage Reduced Low-order Harmonic Voltage Waveform Sinusoidal PWM Supervisory Circuit X-connected Inverter Topology |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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