External, parallel and divided selection switch voltage-type monopole multi-input high-frequency link inverter
A technology of time-sharing selection and switching voltage, applied in the direction of converting DC power input to DC power output, AC power input converting to DC power output, adjusting electrical variables, etc., which can solve the problem of low power density, practical limitations, and low conversion efficiency. and other problems, to achieve the effect of small output voltage ripple, simple circuit topology, and wide application prospects.
Active Publication Date: 2018-06-22
QINGDAO UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The distributed power generation system realizes multiple input sources simultaneously supplying power to loads and prioritizing the utilization of energy, which improves the stability and flexibility of the system, but there are defects such as two-stage power conversion, low power density, low conversion efficiency, and high cost. Its practicality is limited to a large extent
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
[0033]The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments of the specification.
[0034] The external parallel time-sharing selectable switching voltage type single-stage multi-input high-frequency link inverter is a multi-input single-output high-frequency inverter circuit that converts multiple common-ground input filters and a common output high-frequency isolation transformer. The voltage cycle conversion filter circuit is connected to form, each input terminal of the multi-input single-output high-frequency inverter circuit is connected to the output end of each input filter in one-to-one correspondence, and the output terminal of the multi-input single-output high-frequency inverter circuit is connected to all The high-frequency transformer input terminals of the output high-frequency isolation transformer cycle conversion filter circuit are connected, and the multi-input single-outp...
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 relates to an external, parallel and divided selection switch voltage-type monopole multi-input high-frequency link inverter. The circuit structure is formed by connecting a plurality ofinput filters which are in common ground and a shared output high-frequency isolation transformation cycle conversion filtering circuit through a multi-input and single-output high-frequency inversion circuit of an external, parallel and divided selection four-quadrant power switch, each input end of the multi-input and single-output high-frequency inversion circuit is connected with an output end of each input filter in one-to-one correspondence, and an output end of the multi-input and single-output high-frequency inversion circuit is connected with an input end of the output high-frequencyisolation transformation cycle conversion filtering circuit. The inverter has the characteristics of divided power supply, simple circuit, monopole power conversion, high power density, high conversion efficiency, small ripple output voltage, wide application prospect and the like, multiple input sources are in common ground, an output and an input are in high-frequency isolation, and a key technology is laid for an intermediate- and small-capacity distributed power supply system for achieving combined power supply of various new energy sources.
Description
technical field [0001] The external parallel connection time-division selective switching voltage type single-stage multi-input high-frequency link inverter involved in the present invention belongs to the power electronic conversion technology. Background technique [0002] The inverter is a static converter device that uses power semiconductor devices to convert an unstable and inferior DC power into a stable and high-quality AC power for AC loads or AC grid connection. Inverters with low-frequency electrical isolation (including no electrical isolation) or high-frequency electrical isolation between the output AC load or the AC grid and the input DC power supply are called low-frequency link and high-frequency link inverters, respectively. The electrical isolation components mainly play the following roles in the inverter: (1) realize the electrical isolation between the output and input of the inverter, and improve the safety, reliability and electromagnetic compatibilit...
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): H02M7/5387H02M7/5395H02M3/335H02M3/337H02M1/12
CPCH02M1/126H02M3/3353H02M3/33576H02M3/337H02M7/493H02M7/5387H02M7/5395H02M1/007
Inventor 陈道炼
Owner QINGDAO UNIV