Comparison between two-stage and three-stage Peltier thermoelectric coolers driven by pulse width modulation

This paper offers a two-stage boost converter for a single-phase inverter without transformer for PV systems. Each stage of the converter is separately controlled by a pulse width modulated signal. A Simulink model of the converter using efficient voltage control topology is developed. The proposed circuit performance characteristics are explained and the obtained simulation results are confirmed through the applied experiments. Moreover, this paper has examined the control circuit of a single-phase inverter that delivers a pure sine wave with an output voltage that has the identical value and frequency as a grid voltage. A microcontroller supported an innovative technology is utilized to come up with a sine wave with fewer harmonics, much less price and an easier outline. A sinusoidal pulse width modulation (SPWM) technique is used by a microcontroller. The developed inverter integrated with the two-stage boost converter has improved the output waveform quality and controlled the dead time as it decreased to 63 µs compared to 180 µs in conventional methods. The system design is reproduced in Proteus and PSIM Software to analyze its operation principle that is confirmed practically.

Download Full-text

Two-stage converter with remote state pulse width modulation for transformerless photovoltaic systems

Electric Power Systems Research ◽

10.1016/j.epsr.2013.11.022 ◽

2014 ◽

Vol 108 ◽

pp. 260-268 ◽

Cited By ~ 10

Author(s):

M.C. Cavalcanti ◽

F. Bradaschia ◽

P.E.P. Ferraz ◽

L.R. Limongi

Keyword(s):

Pulse Width ◽

Pulse Width Modulation ◽

Photovoltaic Systems ◽

Two Stage

Download Full-text

Design and analysis of pulse-width modulation-based two-stage current-mode multi-phase voltage doubler

IET Circuits Devices & Systems ◽

10.1049/iet-cds.2009.0111 ◽

2010 ◽

Vol 4 (4) ◽

pp. 269 ◽

Cited By ~ 11

Author(s):

Y.-H. Chang

Keyword(s):

Pulse Width ◽

Pulse Width Modulation ◽

Current Mode ◽

Phase Voltage ◽

Two Stage ◽

Voltage Doubler ◽

Multi Phase

Download Full-text

Research on Limit-Trajectory Over-Modulation Strategy of Two Stage Matrix Converter

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.599-601.1648 ◽

2014 ◽

Vol 599-601 ◽

pp. 1648-1651

Author(s):

Jing Lu ◽

Ming Shen

Keyword(s):

Pulse Width ◽

Control Algorithm ◽

Pulse Width Modulation ◽

Poor Quality ◽

Matrix Converter ◽

Two Stage ◽

Memory Space ◽

Look Up Table ◽

Linear Modulation

Aim at solving the problem is poor quality of waveforms and that of complicated modulation strategy in two stage matrix converter. The method is that Limit-Trajectory over-modulation strategy is adopted in inverter to ensure linear modulation in all over-modulation regions and space vector pulse width modulation is adopted in rectifier. This simpler control algorithm reduces memory space and linear calculation is instead of look-up table. Simulation show that the voltage transfer ratio can be improved from 0.866 to 0.95 and the quality of output waveforms is greatly enhanced.

Download Full-text

The 1-Bit Instrument

Journal of Sound and Music in Games ◽

10.1525/jsmg.2020.1.1.44 ◽

2020 ◽

Vol 1 (1) ◽

pp. 44-74

Author(s):

Blake Troise

Keyword(s):

Pulse Width ◽

Pulse Width Modulation ◽

Interleaving Techniques ◽

Sonic Environment

The 1-bit sonic environment (perhaps most famously musically employed on the ZX Spectrum) is defined by extreme limitation. Yet, belying these restrictions, there is a surprisingly expressive instrumental versatility. This article explores the theory behind the primary, idiosyncratically 1-bit techniques available to the composer-programmer, those that are essential when designing “instruments” in 1-bit environments. These techniques include pulse width modulation for timbral manipulation and means of generating virtual polyphony in software, such as the pin pulse and pulse interleaving techniques. These methodologies are considered in respect to their compositional implications and instrumental applications.

Download Full-text