Full-bridge inverter phase-shifted PWM (FBPS-PWM) zero voltage switching (ZVS) and high frequency transformer as part of DC-DC converter 311/100V 300W

Toni,; Wijaya, F. Danang; Firmansyah, Eka

doi:10.1109/iceecs.2014.7045266

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Another way to reduce switching loss is to employ PWM soft switching technology, particularly the primary-side phase shifted (PPS) full-bridge (FB) DC-DC converter, which is extensively used. [12][13][14][15][16][17][18] It adopts the phase shift control approach to produce soft switching by leveraging the circuit's inherent resonance settings, reducing the switching loss to a minimum. It is extensively adopted in applications like vehicle chargers due to its continuous frequency-based duty cycle adjustment, but because it is challenging to produce ZVS at a light load, the converter's efficiency is significantly reduced in this situation.…”

Section: Introductionmentioning

confidence: 99%

“…However, these converters have significant voltage and current stresses in the switches and considerable circulating losses. Another way to reduce switching loss is to employ PWM soft switching technology, particularly the primary‐side phase shifted (PPS) full‐bridge (FB) DC‐DC converter, which is extensively used 12–18 . It adopts the phase shift control approach to produce soft switching by leveraging the circuit's inherent resonance settings, reducing the switching loss to a minimum.…”

Section: Introductionmentioning

confidence: 99%

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Real time online efficiency optimization of buck converter against variable voltage and load change

Chen

Tang

et al. 2022

Circuit Theory & Apps

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In order to address the issue of keeping the converter operating at a high efficiency level under different conditions, this paper suggests an adaptive step frequency adjustment online optimization search algorithm, which achieves the goal of fast adjustment and real‐time response to parameter changes. The converter is quickly adjusted to operate at a high efficiency by sampling the input and output current values and modulating the switching frequency utilizing the algorithm. Additionally, the algorithm shifts between two working models to finish the search for the best switching frequency while the converter's characteristics do not change. Moreover, it accomplishes the objective of instantly resynchronizing the algorithm after a change in the converter's parameters and starting a search for the best switching frequency in the new converter state. For various input voltages and output loads, the operating principle, optimal frequency, and efficiency are given. In addition, the principle analysis when the converter parameters are changed is provided, and the choice of two algorithm models is compared. Finally, a prototype buck converter with adjustable input voltage and load is constructed to test the algorithm's efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Real time online efficiency optimization of buck converter against variable voltage and load change

Chen

Tang

et al. 2022

Circuit Theory & Apps

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“…The modulation control system is used to control a two-level AI, which is part of an electric drive control system, on the algorithms of which the energy characteristics of the frequency converter (FC) and the whole electric drive as well. The most widely used algorithms are sinusoidal PWM, which can be modified by changing the shape of the carrier signal [11][12][13][14][15]. The study of this topic allows us to formulate recommendations on the choice of the form and frequency of the carrier signal.…”

Section: Introductionmentioning

confidence: 99%

Analysis and improvement of the efficiency of frequency converters with pulse width modulation

Vasilev

2019

IJECE

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In order to identify the best control algorithm, the effects of modulation control algorithms on the energy characteristics of a two-level autonomous frequency converter inverter were studied. The research was carried out by the methods of mathematical and simulation modeling. The equa-tions of mathematical description were compiled taking into account a number of generally accepted assumptions. An equivalent circuit of a two-level autonomous inverter was created. Comparisons of pulse-width modulation algorithms with carrier signals of various shapes and frequencies were made. Three different forms of carrier signal were used: triangular, sawtooth with a falling edge and sawtooth with a leading edge. Studies were conducted at frequencies of 3,000, 6,000 and 9,000 Hz. Conclusions were made about the identity of the spectral composition of the front and rear edges of the sawtooth signal, it was also noted that with the triangular waveform, being the part of the har-monics, present in the sawtooth form is removed, so, the triangular shape provides the best result of the autonomous inverter. Also, by increasing in the carrier frequency, it was noted that pulse packets appear at different harmonic numbers, shift, and the amplitude and distortion factor decrease, that means, the best performance was obtained at the maximum frequency studied. In the study of the voltage at the output of the chokes at different frequencies of the carrier signal, it was noted that at a higher frequency, the ripple of the output voltage decreases. Throttles do not eliminate harmonics, but only reduce their amplitude. Based on the results, it was concluded that the algorithm with a triangular carrier signal and the maximum frequency provides the best harmonic composition of the output voltage of the frequency converter.

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A Study on High Frequency Smart Inverter Incorporating Supercapacitor and Solar MPPT

Athavale¹,

Chinni²,

Saketh³

et al. 2020

2020 International Conference on Smart Electronics and Communication (ICOSEC)

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Full-bridge inverter phase-shifted PWM (FBPS-PWM) zero voltage switching (ZVS) and high frequency transformer as part of DC-DC converter 311/100V 300W

Cited by 3 publications

References 2 publications

Real time online efficiency optimization of buck converter against variable voltage and load change

Real time online efficiency optimization of buck converter against variable voltage and load change

Analysis and improvement of the efficiency of frequency converters with pulse width modulation

A Study on High Frequency Smart Inverter Incorporating Supercapacitor and Solar MPPT

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