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A single-phase seven-level switched capacitor with common ground inverter and improved phase-shift modulation technique. [PDF]
Sci RepSaif B +4 more
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"If everyone comes together, many things can be changed": A qualitative study on men's perspectives on menstrual health and equity in the Barcelona area (Spain). [PDF]
PLoS OneGarcía-Egea A +11 more
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Analysis of PWM Frequency Control to Improve the Lifetime of PWM Inverter
IEEE Transactions on Industry Applications, 2009Studies have shown that the power cycling Mean Time to Failure (MTTF) of the IGBT bond wire in an adjustable speed drive (ASD) may be very short under some very common conditions. This paper proposes a switching frequency reduction method based on junction temperature variation (ΔTj) of the inverter IGBT. It has the following advantages.
Richard A. Lukaszewski +2 more
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FPGA implementation of PWM pattern generators [for PWM invertors]
Canadian Conference on Electrical and Computer Engineering 2001. Conference Proceedings (Cat. No.01TH8555), 2002Pulse width modulation is used in power converters to modulate a reference signal into gating pulses for IGBT switches. This conversion can be carried out using analog circuits or digital circuits, such as DSPs and microcontrollers. A more efficient and faster solution is the use of field programmable gate arrays (FPGA).
Geza Joos, Dan Deng, Su Chen
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Sectionalized PWM (S-PWM): A new multilevel modulation strategy
2008 IEEE International Symposium on Circuits and Systems, 2008The paper presents a novel multilevel PWM strategy that employs a split section reference waveform with phase-shifted carriers to produce harmonically superior PWM signals. The multilevel PWM switching patterns provide a higher dynamic range than what has been reported in the literature.
Hirak Patangia, Dennis Gregory
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Optimized modulation for PWM rectifiers
2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309), 2003An optimized set-up for controlling PWM rectifiers is proposed in this paper. In particular, the control part is based on a predictive estimation algorithm which guarantees the imposed value of the DC link output voltage and, at the same time, a unity power factor behavior at the mains.
ATTAIANESE C, G. TOMASSO
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Microcomputer Control of PWM Inverters
IEEE Transactions on Industrial Electronics, 1982A method is proposed for implementing on a microcomputer the control of inverters modulated with a digital technique. It consists of storing in the microcomputer memory the switching patterns relative to a limited number of levels of the first harmonics of the inverter output voltage and of computing on line the actual pattern by interpolating the ...
BUJA, GIUSEPPE, FIORINI P.
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