Comparative analysis of PWM techniques: Simulation and DSP implementation

Rus, D. C.; Preda, Nicola; Incze, Ioan Iov; Imecs, Mária; Szabo, Cs.

doi:10.1109/aqtr.2010.5520764

Cited by 17 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generally the NS-PWM techniques in the past was im plemented by using analog devices [2], nowadays up-to date digital devices are used making possible the accurate imple mentation of the NS-PWM [4], [3], [8], [9], [10], [11]. In most cases the reference signals are multisampled during a carrier signal period by utilizing the parallel computing properties of the FPGA [4], [3], [12] In this section a practical implementation method is pre sented which is capable to realize accurately all NS-PWM techniques.…”

Section: Digital Implementation Of Ns-pwmmentioning

confidence: 99%

DC components and subharmonics generated by naturally sampled PWM techniques

Stumpf

Jardan

Nágy

2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

View full text Add to dashboard Cite

One possible implementation form of Pulse Width Modulation is the naturally sampled one (NS-PWM). Its favourable properties are that no distortion or delayed response are introduced by it. The paper compares three different realiza tions of NS-PWM techniques by simulations and experimental measurements when the carrier over reference frequency ratio m f is small number as in inverters supplying ultrahigh speed induction motor (USIM). The three NS-PWM techniques are the Sinusoidal, Sinusoidal and third-harmonic reference injection and the Space Vector Modulation. The paper verifies both by simulation and laboratory results that the three techniques gen erate DC voltage component in the output voltage of the inverter contrary to many previous publications. In addition subharmonic currents and fluxes with considerable amplitudes are produced as well due to the small m f and very low sub harmonic frequency even though the subharmonic voltage component is very small.

show abstract

Section: Digital Implementation Of Ns-pwmmentioning

confidence: 99%

DC components and subharmonics generated by naturally sampled PWM techniques

Stumpf

Jardan

Nágy

2012

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

View full text Add to dashboard Cite

show abstract

“…"An intrinsic advantage of modulation using a triangle carrier wave is that the odd harmonic sideband components around odd multiples of the carrier fundamental and even harmonic sideband components around even multiples of the carrier fundamental are eliminated." [13] In close loop circuit the voltage regulation done by PI controller. The feedback loop is shown in the following diagram.…”

Section: Pwm Genration For Gate Signalmentioning

confidence: 99%

Design High Gain Dc-Dc Boost Converter With Coupling Inductor and Simulation in Psim

Tyagi¹

2014

IJRET

View full text Add to dashboard Cite

show abstract

“…The synchronous sampling method is commonly applied to digitally controlled power converter in various applications (19) . However, as shown in Fig.…”

Section: Digital Control Current-mode Power Convertermentioning

confidence: 99%

A Highly Reliable Digital Current Control using an Adaptive Sampling Method

et al. 2014

View full text Add to dashboard Cite

A sampling algorithm to immunize digital control power converters with triangular carrier waveforms against switching noise is introduced. Many converter circuits employ a sawtooth carrier waveform; however, no optimal sampling method has been presented that avoids switching noise. As demonstrated by the experiments conducted in this research, there are cases where converter circuits are not correctly controlled and sample values are affected by switching noise via current sensors or AD converters. As a result, the output is unstable and inaccurate thus reducing the reliability of the converter.This paper proposes an adaptive sampling method for a digital control current-mode power converter circuit on an FPGA (Field Programmable Gate Array) with the PWM (Pulse Width Modulator) sawtooth carrier waveform. To avoid noise overshoot and undershoot during the MOSFET's switching process, the sampling timing of the AD converter is adaptively tuned according to the duty ratio of each switching cycle. We further introduce a random phase noise generator, to conduct simulations as realistic as practical experiments. We also present simulation and experimental results of the proposed methodology illustrating cases of successful noise avoidance. Thus, we verify that the proposed sampling method improves the reliability of power converter circuits.

show abstract

Comparative analysis of PWM techniques: Simulation and DSP implementation

Cited by 17 publications

References 6 publications

DC components and subharmonics generated by naturally sampled PWM techniques

DC components and subharmonics generated by naturally sampled PWM techniques

Design High Gain Dc-Dc Boost Converter With Coupling Inductor and Simulation in Psim

A Highly Reliable Digital Current Control using an Adaptive Sampling Method

Contact Info

Product

Resources

About