An Optimal Design Method for llc Resonant Converter
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A resonant converter and optimization design technology, applied in the field of electronics, can solve the problems of LLC resonant converter design method relying on experience and inaccurate
What is AI technical title?
AI technical title is built by PatSnap AI team. It summarizes the technical point description of the patent document.
A resonant converter and optimization design technology, applied in the field of electronics, can solve the problems of LLC resonant converter design method relying on experience and inaccurate
CN108631597BActive 📅 Publication Date: 2019-10-11XI AN JIAOTONG UNIV
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0076] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0077] The LLC resonant converter design method in the present invention is suitable for both LLC half-bridge resonant converters and LLC full-bridge resonant converters, and only uses figure 1 The LLC half-bridge resonant converter in .
[0078] Among the losses of the LLC resonant converter, the conduction loss P on account for the main part. Therefore, in the optimized design method of the LLC resonant converter of the present invention, the conduction loss P is on The evaluation index designed for LLC resonant converter should be as small as possible in the design.
[0079] figure 2 It is the design flow chart of LLC resonant converter, which mainly consists of the following...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses an optimal design method of an LLC resonant converter, which includes: determining the transformation ratio of the transformer according to the design index of the LLC resonant converter; core shape, preliminarily design a transformer; measure the parasitic capacitance of the transformer; deduce the relationship between conduction loss and dead time, and obtain the optimal dead time when the conduction loss is the smallest; determine the optimal dead time according to the optimal dead time Optimal magnetizing inductance; select the inductance ratio and quality factor that can satisfy the gain condition; get the resonant inductance value and resonant capacitance value from the optimal magnetizing inductance, inductance ratio and resonant frequency; change the air gap of the transformer to make the magnetizing inductance equal to the optimal magnetizing inductance . This method solves the problem that the traditional LLC resonant converter design method relies too much on experience and is not accurate enough, makes the design result more accurate, and can be extended to various applications.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to an optimized design method of an LLC resonant converter. Background technique [0002] Since its birth, LLC resonant converter has received more and more attention due to its outstanding advantages. The LLC resonant converter can realize the soft turn-on of the primary side switch tube in the whole working range, even if the switching frequency is very high, it can still achieve high efficiency. The increase of switching frequency is beneficial to reduce the volume of the transformer and filter, and the resonant inductor and magnetizing inductor can be integrated into the transformer, so high power density can be achieved. [0003] Because of the above advantages of LLC resonant converters, how to exploit the advantages of LLC resonant converters through precise design has become a hot issue concerned by researchers in related fields. The LLC resonant converter has two degr...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More