A design method of intrinsically safe Buck converter
An intrinsically safe, design method, applied in the direction of converting DC power input to DC power output, instruments, adjusting electrical variables, etc., can solve the problems of low conversion efficiency, large loss, power supply reliability impact, etc., and achieve good dynamic characteristics. , the effect of high conversion efficiency
Active Publication Date: 2019-01-08
CHINA UNIV OF MINING & TECH
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The existing intrinsically safe switching power supply is mostly realized by linear power supply, which has low conversion efficiency, narrow input dynamic range and large loss
A problem accompanied by high loss is the need to install a radiator, and the increase in temperature has many adverse effects on the reliability of the power supply.
The current research on intrinsically safe power supplies is mainly focused on various non-isolated converters, which cannot take into account various design requirements
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0028] The design of intrinsically safe converters is carried out under the premise of given input voltage and load dynamic range, output voltage and maximum allowable ripple voltage.
[0029] When the Buck converter works in the discontinuous conduction mode (DCM) compared with the continuous conduction mode (CCM), the inductor peak current is larger. In order to reduce the current stress of the device and obtain better dynamic regulation characteristics, the converter output is generally The working range with larger power is designed as CCM mode.
[0030] figure 1 It is a schematic diagram of the Buck converter of the present invention. Such as figure 1 As shown, U i is the input voltage, Q is the main switching tube, u b Control the driving signal of the main switch tube, D is the freewheeling diode, L is the energy storage inductance,...
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 intrinsically safe Buck converter design method, which comprises the following steps: step 1, setting corresponding parameters and indexes according to design requirements;The set parameters include an input voltage, an output voltage, an output current, a ripple voltage, a maximum output resistance and a minimum output resistance. 2, set that switching frequency of thebuck convert; 3, calculate that total energy of the discharge gap at the output end of the Buck converter under the most dangerous working condition of the output short circuit and the most dangerousworking condition of the output open circuit; Step 4: Judging the designed Buck converter output intrinsic safety performance, if the Buck converter meets the output intrinsic safety requirements, the design is finished, otherwise returning to step 2 for re-implementation. The intrinsically safe Buck converter design method provided by the invention can be applied to meet requirements of DC / DC converters in anti-explosion occasions, at the same time, have good dynamic characteristics, high conversion efficiency.
Description
technical field [0001] The invention relates to a DC-DC converter for explosion-proof occasions, in particular to a design method for an intrinsically safe Buck converter. Background technique [0002] Electrical hazards are mainly caused by factors such as electric sparks, arcs, high temperature exposure, and static electricity. When short circuits, overloads, poor contacts, and heat occur in the circuit, the above phenomena will occur. Therefore, electrical equipment, electronic devices and other products used in hazardous locations must meet explosion-proof requirements. Intrinsic safety is the best form of explosion protection, that is, neither the electric spark nor the thermal effect generated under normal operation or specified fault conditions can ignite the specified explosive gas mixture. Intrinsically safe power supply, as a power supply equipment widely used in coal mines, petroleum, chemical and other occasions, has been widely used due to its good explosion-pr...
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 Application Information
Patent Timeline
Login to View More IPC IPC(8): H02M3/156
CPCH02M3/156
Inventor 于月森夏远哲黄煜茹张吉阳吕晓彬张亚男张圆明刘天宁张帆石蒙柳军停修俊瑞伍葵
Owner CHINA UNIV OF MINING & TECH