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RISS 인기검색어
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- 저자 : Huang LiangDong (검색결과 1 건)
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Liu Ying,Li Bing,Song FangFang,Gao HanYu,Huang LiangDong,Chen XuXuan 한국전기전자재료학회 2022 Transactions on Electrical and Electronic Material Vol.23 No.6
High quality power is the prerequisite for high precision measurement of an electronic voltage transformer. In order to ensure a compact structure and stable operation of the transformer, this paper proposes a circuit and high voltage energy harvest of high precision electronic voltage transformer based on coupling capacitance. The energy extraction circuit is directly connected with the high voltage terminal through a capacitor, and the low DC voltage is obtained through the diode rectifier bridge. A self-holding duty cycle regulating circuit is installed on the DC side, and the power required by the load can be automatically adjusted to match the load. Because the overall load of the power extraction circuit is capacitive, there is no ferro-resonance problem. Furthermore, there is also no MCU in the device, so that the whole circuit has the advantages of small power loss, small volume, strong anti-interference ability, and can provide a stable DC power for the metering device. The proposed method is verifi ed in simulations using PSCAD/EMTDC.
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