Results 221 to 230 of about 56,128 (237)
Some of the next articles are maybe not open access.
An analysis of delta modulated PWM inverter
1985 IEEE Power Electronics Specialists Conference, 1985This paper presents an analysis of a voltage source delta modulation (DM) inverter. The delta modulation method provides several advantageous characteristics over commonly used sine modulation process. It is relatively easy to implement and provides low harmonics at the inverter output.
M. A. Rahman +2 more
openaire +1 more source
A class of optimal multilevel inverters based on sectionalized PWM (S-PWM) modulation strategy
2009 52nd IEEE International Midwest Symposium on Circuits and Systems, 2009The paper extends previous work on a novel multilevel PWM strategy to design and implement an optimal inverter for a stand-alone PV application. This modulation strategy produces a much higher fundamental output compared to conventional SPWM without any pulse dropping. Phase-shifted carriers have been used to produce a harmonically superior SPWM signal.
Hirak Patangia, Dennis Gregory
openaire +1 more source
2020 International Symposium on Computer, Consumer and Control (IS3C), 2020
This paper proposes a method to successfully embedded three control waveforms, PWM (Pulse Width Modulation), PFM (Pulse Frequency Modulation), and PWM-PFM (pulse width frequency modulation), into an FPGA (Field-Programmable Gate Array) chip. The three types of control modulation are generally used in power supply design.
openaire +1 more source
This paper proposes a method to successfully embedded three control waveforms, PWM (Pulse Width Modulation), PFM (Pulse Frequency Modulation), and PWM-PFM (pulse width frequency modulation), into an FPGA (Field-Programmable Gate Array) chip. The three types of control modulation are generally used in power supply design.
openaire +1 more source
PWM modulator with increased reliability in FPGA circuit
2012 ELEKTRO, 2012This paper deals with the design and simulation of PWM modulator with increased reliability implemented in FPGA circuit Spartan-3A DSP-1800th. The proposal and design has been made in the simulation program ISE from Xilinx. Quantification of the reliability of single, double and three — module system is also discussed in paper.
Ondrej Hock, Peter Drgona
openaire +1 more source
Quasi-dual modulation of three-phase PWM converters
IEEE Transactions on Industry Applications, 1993The possibility of transferring the modulation method developed for a pulse width modulated (PWM) power converter with a DC voltage link (VLC) to a PWM converter with a DC current link (CLC) based on the inverse current and voltage behavior of these two systems is evaluated.
J.W. Kolar, H. Ertl, F. Zach
openaire +1 more source
RANCANG BAGUN ALAT GEOLISTRIK BERBASIS PULSE - WIDTH MODULATION (PWM)
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016 UNJ, 2016Kebutuhan alat survai geofisika sangat tinggi, terutama alat geolistrik. Tinggi kebutuhan tersebut membuat alat geolistrik menjadi sangat mahal. Untuk memecahkan masalah tersebut, maka muncul ide pembuatan geolistrik. Alat geolistrik adalah suatu alat geofisika untuk mengetahui aliran arus listrik kedalam tanah.
Muhammad, Akbar, Gunawan, Handayani
openaire +2 more sources
Hybrid-Frequency Modulation for PWM-Integrated Resonant Converters
IEEE Transactions on Power Electronics, 2013This paper presents a unique modulation method for extending the input range of pulse-width modulation (PWM)-integrated resonant converters, such as the isolated boost resonant converter, while maintaining high conversion efficiency. The technique includes primarily the hybridizing of constant-on, constant-off, and fixed-frequency control depending ...
Ben York, Wensong Yu, Jih-Sheng Lai
openaire +1 more source
Small-signal modeling of three-phase PWM modulators
PESC Record. 27th Annual IEEE Power Electronics Specialists Conference, 2002The paper presents new small-signal modeling of uniformly-sampled three-phase PWM modulators. The models reveal that the uniformly-sampled modulators, which are commonly used in three-phase power conversion, introduce delays and additional coupling between the power converter control inputs, as well as time-variation of the power converters' small ...
S. Hiti, D. Boroyevich
openaire +1 more source
An on-line PC-based converter PWM modulator
Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting, 2003Developments in power control techniques for pulsewidth-modulated (PWM) inverters are often ignored because of lack of time for adequate testing and evaluation. The programmable PC-based PWM described is designed to alleviate this problem. The modulator is capable of generating, in ready-to-use form, gating signals for any type of PWM scheme and most ...
D. Vincenti, P.D. Ziogas, R.V. Patel
openaire +1 more source
A hybrid PWM modulation scheme for PV inverter
2013 1st International Future Energy Electronics Conference (IFEEC), 2013A hybrid PWM scheme for three-level PV inverter is presented. Firstly, modulation schemes are compared with respect to conversion loss with loss breakdown analysis. Then a hybrid PWM scheme is investigated for the PV inverter. The swapping of the PWM scheme is discussed.
Cheng Yan +4 more
openaire +1 more source