2020
DOI: 10.3390/electronics9091395
|View full text |Cite
|
Sign up to set email alerts
|

Hybrid Current-Mode Control of PSFB Converter to Compensate Slew Interval and Prevent Magnetic Saturation of Transformers

Abstract: This paper proposes a newly developed hybrid current-mode control (HCMC) method for phase-shifted full-bridge (PSFB) converters. Generally, PSFB converters have been widely used in various DC-DC power applications owing to their ease of control and low switching losses. However, the transformer can be saturated by volt-second imbalance of the magnetizing inductance. Therefore, a blocking capacitor can be used in series with the transformer, or peak current-mode control methods with slope compensation can be ap… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
10
0

Year Published

2020
2020
2022
2022

Publication Types

Select...
3

Relationship

0
3

Authors

Journals

citations
Cited by 3 publications
(10 citation statements)
references
References 26 publications
0
10
0
Order By: Relevance
“…Unfortunately, various inevitable effects can cause a small asymmetrical voltage-second product on primary side of transformer [14]. One transient reason is the unbalanced duty cycle between power cycle PC 1 for the lagging leg and PC 2 for the leading leg due to ZVS-operation or the change of d eff for regulating the output current I B of the PSFB [12]. Even in steady state operation manufacturing tolerances of devices as well as circuit board layout (PCB) cause different voltage drops and apply different voltages to the magnetizing inductor L h and increase I h,DC [10].…”
Section: Transformer Dc-offset Currentmentioning
confidence: 99%
See 2 more Smart Citations
“…Unfortunately, various inevitable effects can cause a small asymmetrical voltage-second product on primary side of transformer [14]. One transient reason is the unbalanced duty cycle between power cycle PC 1 for the lagging leg and PC 2 for the leading leg due to ZVS-operation or the change of d eff for regulating the output current I B of the PSFB [12]. Even in steady state operation manufacturing tolerances of devices as well as circuit board layout (PCB) cause different voltage drops and apply different voltages to the magnetizing inductor L h and increase I h,DC [10].…”
Section: Transformer Dc-offset Currentmentioning
confidence: 99%
“…Considering bidirectional operation, a blocking capacitor must be placed in series to primary and secondary side of transformer. is method needs several additional power devices compared to controller-based methods and therefore results in increased size of power stage and overall system costs [12,13].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…The current mode control has also been shown to eliminate the flux symmetry problem associated with isolated topologies 9 . As comparison of a number of newest peak current mode control methods, references 3,10,11 are studied. In Ko et al, 10 hybrid current mode control for a phase‐shifted full‐bridge converter is presented, but the effect of sub‐harmonic oscillation on the controller performance and mitigating its effect has not been studied.…”
Section: Introductionmentioning
confidence: 99%
“…As comparison of a number of newest peak current mode control methods, references 3,10,11 are studied. In Ko et al, 10 hybrid current mode control for a phase‐shifted full‐bridge converter is presented, but the effect of sub‐harmonic oscillation on the controller performance and mitigating its effect has not been studied. In Ma et al, 3 secondary‐side peak current mode control on isolated buck forward converter is studied; however, duty cycle greater than 0.5 and its effect on converter stability are not considered.…”
Section: Introductionmentioning
confidence: 99%