scholarly journals Analysis and Design of Three-Level Full-Bridge LLC Resonant Converter Based on Pulse Frequency Modulation

2021 ◽  
Vol 701 (1) ◽  
pp. 012034
Author(s):  
J Z Liu ◽  
Y Zhao ◽  
P Hu ◽  
T T Chen
Keyword(s):  
Frequency Modulation ◽  
Pulse Frequency ◽  
Resonant Converter ◽  
Pulse Frequency Modulation ◽  
Analysis And Design ◽  
Llc Resonant Converter

scholarly journals Design Methodology of Tightly Regulated Dual-Output LLC Resonant Converter Using PFM-APWM Hybrid Control Method

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2146
Author(s):  
HwaPyeong Park ◽  
Mina Kim ◽  
HakSun Kim ◽  
JeeHoon Jung
Keyword(s):  
Design Methodology ◽  
Control Method ◽  
Hybrid Control ◽  
Pulse Frequency ◽  
Voltage Regulation ◽  
Resonant Converter ◽  
Pulse Frequency Modulation ◽  
Load Range ◽  
Worst Case ◽  
Llc Resonant Converter

A dual-output LLC resonant converter using pulse frequency modulation (PFM) and asymmetrical pulse width modulation (APWM) can achieve tight output voltage regulation, high power density, and high cost-effectiveness. However, an improper resonant tank design cannot achieve tight cross regulation of the dual-output channels at the worst-case load conditions. In addition, proper magnetizing inductance is required to achieve zero voltage switching (ZVS) of the power MOSFETs in the LLC resonant converter. In this paper, voltage gain of modulation methods and steady state operations are analyzed to implement the hybrid control method. In addition, the operation of the hybrid control algorithm is analyzed to achieve tight cross regulation performance. From this analysis, the design methodology of the resonant tank and the magnetizing inductance are proposed to compensate the output error of both outputs and to achieve ZVS over the entire load range. The cross regulation performance is verified with simulation and experimental results using a 190 W prototype converter.

scholarly journals Analysis and Design of High-Efficiency Bidirectional GaN-Based CLLC Resonant Converter

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3859
Author(s):  
Yuanjun Liu ◽  
Guiping Du ◽  
Xueyi Wang ◽  
Yanxiong Lei
Keyword(s):  
Design Methodology ◽  
High Efficiency ◽  
Pulse Frequency ◽  
Resonant Converter ◽  
Pulse Frequency Modulation ◽  
Zero Voltage Switching ◽  
Analysis And Design ◽  
Reverse Mode ◽  
Parasitic Parameters ◽  
Zero Voltage

A bidirectional CLLC resonant converter (CLLC-BRC) based on GaN transistors is analyzed and designed in this paper. Similar resonant topologies are listed and commented on, with the CLLC topology showing competitiveness in bidirectional energy transmission. The analysis of the aforementioned converter has been provided, including the reveal of resonant frequencies of the CLLC topology and an improved zero-voltage switching (ZVS) condition with operation principles of the reverse mode and relevant parasitic parameters taken into account. The design methodology of the aforementioned converter based on pulse frequency modulation (PFM) is further discussed in detail. A prototype with a rated power of 400 W and a maximal operating frequency that is larger than 0.5 MHz was built to verify the proposed design methodology. The highest conversion efficiency of the prototype was 97.02% in the forward mode, and it was 95.96% in the reverse mode.

Demonstration of 6-bit, 0.20-mVpp Quasi-Triangle Voltage Waveform Generator Based on Pulse-Frequency Modulation

2014 ◽  
Vol E97.C (3) ◽  
pp. 194-197 ◽  
Author(s):  
Yoshitaka TAKAHASHI ◽  
Hiroshi SHIMADA ◽  
Masaaki MAEZAWA ◽  
Yoshinao MIZUGAKI
Keyword(s):  
Frequency Modulation ◽  
Pulse Frequency ◽  
Waveform Generator ◽  
Voltage Waveform ◽  
Pulse Frequency Modulation
Sign in / Sign up

Export Citation Format

Share Document