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Vector quantized signal dependant Delta-Sigma modulator based high performance three-phase switching converter
2009
IEICE Electronics Express
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This paper proposes three-phase signal dependant DSM based switching converter with vector quantizer. The proposed three-phase SC increases the input signal to full scale and maintains its stability. ...
The conventional second-order Delta-Sigma modulator (DSM) based switching converter (SC) cannot be used for full range (−1 to +1) of input signal. ...
Introduction Delta-Sigma Modulators (DSMs) are over sampled analog-to digital converters that achieve the performance of high resolution quantizer by using low resolution quantizer and linear filter in ...
doi:10.1587/elex.6.1259
fatcat:a4gdal3tdre3jmap67qm5tibme
Space vector based pulse density modulation scheme for multilevel inverter control with zero voltage switching
2014
2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)
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First order sigma delta modulator is used to obtain Pulse Density Modulation. The vector space is divided into 18 segments for spatial quantization. ...
Space Vector Based Pulse Density Modulated scheme for multilevel inverter is proposed in this paper. ...
The space vector quantizer consists of two parts, m-n to three phase voltage converter and a space vector quantizer. ...
doi:10.1109/aicera.2014.6908191
fatcat:u7ljjjbygvdapc2fyukxb5q2k4
Methods of Modulation for Current-Source Single-Phase Isolated Matrix Converter in a Grid-Connected Battery Application
2020
Energies
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This paper discusses three methods of modulation for a single-phase isolated matrix converter. ...
The matrix converter is combined with a transformer integration to perform power decoupling control in order to reduce the number of component and capacitor volumes. ...
Delta-Sigma Conversion with Pulse Density Modulation (PDM) In order to eliminate the voltage error, a delta-sigma conversion which is based on pulse density was discussed. ...
doi:10.3390/en13153845
fatcat:f5offknjrbblxhovv7wbtmilai
Several-hundred-kHz single-phase to commercial frequency three-phase matrix converter using delta-sigma modulation with space vector
2014
2014 IEEE Energy Conversion Congress and Exposition (ECCE)
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This paper discusses the pulse density modulation (PDM) control methods for a single-phase to three-phase matrix converter (MC) in the high-frequency application. ...
a delta-sigma conversion. ...
PDM Control based on Space Vector Modulation combined with Delta-Sigma Conversion In this section, a proposed PDM method, which is combined with SVM and delta-sigma conversion, is proposed in order to ...
doi:10.1109/ecce.2014.6953445
fatcat:yky3p624l5a4bk2dpl42a4lgei
An Investigation on the Performance of Random PWM Controlled Converters
2015
Engineering, Technology & Applied Science Research
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renewable energy sources, for two level as well as three level inverter. ...
Among others, it may be implemented to achieve switching loss equalization in power switches for cascaded H-Bridge multilevel inverters. ...
Harmonics spikes at multiples of switching frequency are reduced by using a sigma delta modulator where switching frequency is varied randomly using a vector quantization technique [10] . ...
doi:10.48084/etasr.599
fatcat:jnft52o6bzbbfnlwyujf3fcdd4
A fundamental verification of a single-phase to three-phase matrix converter with a PDM control based on space vector modulation
2014
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA)
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This paper discusses pulse density modulation (PDM) control methods for a single-phase to three-phase matrix converter for high-frequency applications such as the grid interface converter for a wireless ...
As a result, the THD of the output voltage with delta-sigma conversion and PDM pattern method based on SVM are 5.96% and 2.15% respectively in the experiment using IMC. ...
Fig. 5 5 shows a frame format of PDM control waveform for the single-phase to three-phase CMC.
(a) PDM signals generation block diagram based on SVM.(b) Space vector diagram. ...
doi:10.1109/ipec.2014.6869571
fatcat:q5qhlk4gdfctbjywulld7eemiy
A Low-Noise Delta-Sigma Phase Modulator for Polar Transmitters
2014
The Scientific World Journal
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A low-noise phase modulator, using finite-impulse-response (FIR) filtering embedded delta-sigma (ΔΣ) fractional-N phase-locked loop (PLL), is fabricated in 0.18 μm CMOS for GSM/EDGE polar transmitters. ...
Experimental results show that the presented architecture performs RF phase modulation well with 20 mW power dissipation from 1.6 V supply and achieves the root-mean-square (rms) and peak phase errors ...
the signal fidelity while phase modulation is performed: Figure 3 gives the proposed low-noise delta-sigma phase modulator for polar transmitters, based on the discussion above. / components of GSM/ ...
doi:10.1155/2014/521717
pmid:24719578
pmcid:PMC3956518
fatcat:cdbfu2vebjbife4yuqcuaw7iem
Noise Minimization for Ultra-High SNR Class-D Power Amplifiers
2018
CPSS Transactions on Power Electronics and Applications
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Delta-Sigma Modulation Noise shaping delta-sigma modulation comprises different methods that can alter the frequency distribution of quantization noise [38] . ...
Fig. 16 . 16 Experimentally analyzed effects of delta-sigma modulation on SNR with closed-loop converter operation. ...
He has proposed numerous novel PWM converter topologies, and modulation and control concepts and has supervised over 70 Ph.D. students. ...
doi:10.24295/cpsstpea.2018.00033
fatcat:nngcpeemvrdgnoklaq7qbjjdem
An overview of sigma-delta converters
1996
IEEE Signal Processing Magazine
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Sigma-delta techniques are also applicable to the high resolution A/D conversion of narrowband band-pass signals using band-pass sigma-delta modulators. ...
This section very briefly discusses several schemes that use architectural parallelism to improve the performance of sigma-delta modulators AD converters. ...
doi:10.1109/79.482138
fatcat:jtzozmecavdfdhonq6vnm65v7e
Multifunctional RF Transmitters for Next Generation Wireless Transceivers
2007
2007 IEEE International Symposium on Circuits and Systems
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This has implications for the design of transmitters in portable/mobile devices as well as base stations and access points. ...
This paper will summarize the digital techniques that can be employed to improve the performance of wireless power amplifiers. ...
(b) Implementation of bandpass delta-sigma modulator [9] , (c) lower-speed baseband delta-sigma modulation of switching-mode amplifiers [10] . ...
doi:10.1109/iscas.2007.377995
dblp:conf/iscas/LarsonAK07
fatcat:lsjrayth5jftjn7tunmzjpn5da
Brush-DC equivalent control based delta modulation for a PWM inverter-fed nine phase induction machine drive
2015
2015 IEEE International Conference on Industrial Technology (ICIT)
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Scalar control, direct torque control and vector control methods work well in three-phase machines. ...
The delta modulation technique is proposed because it gives good inverter performance characteristics and reduces torque and current ripples. ...
Sigma-Delta Modulation The alternative linear delta modulator can be modified to produce the sigma-delta modulator. ...
doi:10.1109/icit.2015.7125171
dblp:conf/icit2/GundaG15
fatcat:m6wec7xfybbprp2qzt3kbcw67u
A $\Delta\Sigma$-Digitized Polar RF Transmitter
2007
IEEE transactions on microwave theory and techniques
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Index Terms-Code division multiple access (CDMA), constant envelope modulator, efficiency, IS-95A, linearity, multibit, polar modulator, power amplifier (PA), RF transmitter, sigma-delta, DS -to-phase ...
The overall efficiency is improved to 48.6% with a three-level quantized 16 modulator. ...
The 1 quantization can be used for ease of combining the envelope and phase signals, which enables just flipping the up-converted phase signal. ...
doi:10.1109/tmtt.2007.907137
fatcat:zequ4muhbzfpllzzar2ph4kjoq
Polar Transmitter with Differential DSM Phase and Digital PWM Envelope
2014
JSTS Journal of Semiconductor Technology and Science
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A differential delta-sigma modulator (DSM) tunes a three-terminal voltage-controlled oscillator (VCO) to perform RF phase modulation, where the VCO tuning curve is digitally pre-compensated for high linearity ...
A digital intermediate-frequency (IF) pulse-width modulator (PWM) drives a complementary power-switch followed by an LC filter to achieve envelope modulation with high efficiency. ...
In this work, with the phase path based on a differential delta-sigma modulated three-terminal voltage-controlled oscillator (VCO) where the carrier frequency is calibrated by a dual-mode frequency-locked ...
doi:10.5573/jsts.2014.14.3.313
fatcat:gwsitp54vzfcpmb6hbkuvenaxi
Design of an FPGA Based Controller for Delta Modulated Single-Phase Matrix Converters
2012
Journal of Power Electronics (JPE)
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A FPGA based delta modulated single phase matrix converter has been developed that may be used in both cyclo-converters and cyclo-inverters. ...
The peripheral input-output and FPGA interfacing have been developed through Xilinx 9.2i, to generate delta modulated trigger pulses for the converter. ...
This delta modulation scheme is popularly known as sigma delta modulation [30] . For a single phase cyclo-inverter a sine wave having the desired output frequency, is the input to the modulator. ...
doi:10.6113/jpe.2012.12.6.974
fatcat:7rpdoufvovamxfhnmomaj4bsxm
Noise Floor Reduction in Frequency Delta-Sigma Modulation Microphone Sensors
2021
Sensors
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Frequency delta-sigma modulator (FDSM) employing a variable frequency oscillator is a novel replacement of the classical delta-sigma modulators. ...
However, the signal-to-noise ratio was significantly degraded by noise floor, in the previous papers. ...
Delta-Sigma ADCs and Delta-Sigma Modulators
Frequency Delta-Sigma Modulators The FDSM is a novel delta-sigma modulation technique using a VCO [4, 5, 7] . ...
doi:10.3390/s21103470
pmid:34065732
fatcat:yppczdir5rfdzixj32ettt7xza
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