A Capacitive Self-Equalizing Multilevel High Frequency Inverter
A high-frequency inverter, self-balancing technology, applied in electrical components, conversion devices for converting AC power input to DC power output, and output power, etc. Low transmission efficiency and other problems, to avoid the problem of capacitor voltage imbalance, reduce harmonic content, and improve transmission efficiency
Active Publication Date: 2017-10-20
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0002] The traditional DC power distribution system (DC PDS) is no longer applicable in many occasions with high power supply requirements due to its shortcomings such as low reliability, low transmission efficiency, and slow dynamic response.
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[0014] The present invention will be further described below in conjunction with specific embodiments.
[0015] Such as figure 1 As shown, the capacitor self-balancing multi-level high-frequency inverter in this embodiment includes a switched capacitor unit X and a full bridge unit Y connected in parallel, wherein the switched capacitor unit X includes an input power source V dc , The first electrolytic capacitor C 1 , The second electrolytic capacitor C 2 , The first diode D 1 , The second diode D 2 , The third diode D 3 , The fourth diode D 4 , Ninth diode D 9 , Tenth diode D 10 , The eleventh diode D 11 , The first switch tube S 1 , The second switch tube S 2 , The third switch tube S 3 And the fourth switch tube S 4 , The full bridge unit Y includes a fifth diode D 5 , The sixth diode D 6 , The seventh diode D 7 , The eighth diode D 8 , The fifth switch tube S 5 , The sixth switch tube S 6 , The seventh switch tube S 7 , The eighth switch tube S 8 And output load Load; the fir...
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The invention discloses a capacitor self-equalizing multi-level high-frequency inverter, comprising: a switched capacitor unit, including first and second electrolytic capacitors, first, second, third, fourth, nine, ten, and eleven poles tube, first, second, third, and fourth switching tubes; full bridge unit, including fifth, sixth, seventh, and eighth diodes, and fifth, sixth, seventh, and eighth switching tubes. The first, diode, and the first switching tube are connected to the second switching tube, the first and ninth diodes are connected to the first switching tube, the third and tenth diodes, and the third switching tube are connected to the first electrolytic capacitor, and the third and eleventh diodes are connected to the first switching tube. , The third switch tube is connected to the second electrolytic capacitor, the second, fourth and tenth diodes, the second and fourth switch tubes are connected to the second electrolytic capacitor, the ninth and eleventh diodes, and the first electrolytic capacitor is connected to the fifth and seventh diodes , the fifth and seventh switch tubes, the fourth diode and the fourth switch tube are connected to the sixth and eighth diodes, the sixth and eight switch tubes. The invention has the advantages of low switching frequency, high transmission efficiency, self-balancing capacitance and the like.
Description
Technical field [0001] The invention relates to the field of High Frequency AC Power Distribution System (High Frequency AC Power Distribution System, HFAC PDS), in particular to a capacitor self-voltage multilevel high frequency inverter. Background technique [0002] The traditional direct current power distribution system (DC PDS) is no longer applicable in many occasions with high power supply requirements due to its low reliability, low transmission efficiency, and slow dynamic response. High-frequency alternating current (HFAC PDS) has received more and more attention due to its advantages of high reliability, high efficiency, high power density, and wireless transmission. Related research has also been gradually applied to computers, communications, electric vehicles, and Renewable energy micro-grid and other fields. At the same time, as the front stage of high-frequency AC power distribution systems, high-frequency inverters have also made breakthroughs in their research...
Claims
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IPC IPC(8): H02M7/483
Inventor 曾君吴佳磊刘俊峰
Owner SOUTH CHINA UNIV OF TECH