A time-domain stability analysis method for LLC resonant converter based on Floquet theory

Li, Hong; Zou, Ying; Jiang, Xiaheng; Liu, Chen

doi:10.1016/j.microrel.2020.113850

Cited by 6 publications

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main power circuit features of a half bridge LLC resonant converter are illustrated in Figure 2. The switching bridge generates a high-frequency square wave by switching and converting the DC voltage to excite the LLC resonant tank, this last then enters the resonant tank, which eliminates the square wave harmonics and gives the output as a sine wave of the fundamental frequency [20].…”

Section: Circuit Descriptionmentioning

confidence: 99%

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Houam¹,

Zaamouche²,

Daouadi³

et al. 2022

EJEE

View full text Add to dashboard Cite

Due to the high efficiency, high power density and low EMI provided by the LLc resonant converter, it has been widely used by researchers in many fields such as induction heating (IH). This converter is based on a resonant circuit consisting of a capacitor (Cr) and two inductors Lr, Lm operating in wide output load regulating ranges for the purpose of achieving good efficiency for very high power systems using a high operating frequency. This paper aims to present a half-bridge LLC resonant converter based on power supplies for IH applications. The analysis contains five components: half bridge inverter, resonant tank, high frequency transformer, rectifier and coil. The switching bridge generates a square waveform to excite the LLC resonant tank, which will produce a resonant sinusoidal current which is transferred to the secondary of the converter through a high-frequency transformer. as it scales the voltage up or down according to the output requirements. The load represented by the equivalent circuit of the coil and work-piece is fed by the current transformed by the rectifiers. This paper provides an improved knowledge of the control of the output power for high-temperature applications through numerical simulation Considering that the load parameters and resonant frequency vary substantially throughout the system operation. The results of testing demonstrated that the proposed scheme and assembly has good efficiency, and it is well suited for magnetic induction heating systems.

show abstract

Section: Circuit Descriptionmentioning

confidence: 99%

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Houam¹,

Zaamouche²,

Daouadi³

et al. 2022

EJEE

View full text Add to dashboard Cite

show abstract

Dynamic Modeling of LLC Resonant Converter Using Extracted Two‐Harmonic Approximation and Comparative Analysis With Other Approaches

Abbasi,

Ghayebloo

2024

Circuit Theory & Apps

View full text Add to dashboard Cite

Resonant converters are widely used in various applications due to their wide input voltage range, high efficiency, and high power density. The mathematical modeling of these converters has great importance because they have both AC and DC states, simultaneously, which poses challenges for controller design. In this paper, a dynamic mathematical model of the LLC resonant converter is extracted by developing the common first harmonic approximation (FHA) model to a two‐harmonic approximation (THA) model, and its accuracy is compared with other conventional models, including the FHA, the dynamic pharos (DP), non‐linear mathematical models. As a reference model, circuit experimental model has been used for comparison. The comparison metric is the sum of squared errors in transient and steady‐state modes, expressed as a percentage of the steady‐state peak value. Furthermore, the output of the mathematical models and simulations is evaluated against practical results from a prototype.

show abstract

Optimal Control Strategy of CLLC Bidirectional Resonant Converter under Light Load

Guan

Zhang

et al. 2022

2022 9th International Forum on Electrical Engineering and Automation (IFEEA)

View full text Add to dashboard Cite

A time-domain stability analysis method for LLC resonant converter based on Floquet theory

Cited by 6 publications

References 2 publications

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Efficiency Considerations of LLC Resonant Converter for Induction Heating Application

Dynamic Modeling of LLC Resonant Converter Using Extracted Two‐Harmonic Approximation and Comparative Analysis With Other Approaches

Optimal Control Strategy of CLLC Bidirectional Resonant Converter under Light Load

Contact Info

Product

Resources

About