無停電電源装置

Uninterruptive power supply

Abstract

PROBLEM TO BE SOLVED: To make it possible to operate an inverter always with the highest modulation factor and design a transformer with a high primary voltage by separating a converter input from a commercial power supply and connecting it to a battery during commercial power interruption and operating the converter as a booster chopper using a battery voltage as a power source. SOLUTION: First switching means 7 which opens the circuit in response to a detection signal from power interruption detection means 12 is provided at the input side of a commercial power supply 1 and a converter 2. And second switching means 8 is provided constituting a booster chopper circuit, which is closed in response to a detection signal of power interruption detection means 12 and connects a positive terminal of a battery 6 to at least one input terminal of the converter 2 and also connects a negative terminal of the battery 6 to a negative terminal of the converter 2. In this way, a control voltage range of the inverter 3 can take a higher primary voltage of a transformer accordingly, thereby permitting a decrease in a current applied to a semiconductor during normal operation. COPYRIGHT: (C)1997,JPO
(57)【要約】 【課題】 蓄電池からの給電期間に、蓄電池の電圧低下 の影響を除去し、インバータ入力直流電圧を一定に保持 する。 【解決手段】 商用電源1の停電時にコンバータ2と商 用電源1の間を第1の開閉手段7で解放し、蓄電池6を コンバータ2の出力側からコンバータ2の入力側に第2 の開閉手段8を介して接続変更して、コンバータ2を昇 圧チヨッパとして動作させ、蓄電池6の電圧が低下して もインバータ3の入力直流電圧を一定に保持する。

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Cited By (7)

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    CN-104024029-BMarch 01, 2017株式会社东芝电动车控制装置以及电动车
    JP-2010142085-AJune 24, 2010Omron Corp, オムロン株式会社パワーコンディショナ
    JP-2013158232-AAugust 15, 2013Toshiba Corp, 株式会社東芝Control device for electric vehicle
    JP-2015226428-ADecember 14, 2015日本電信電話株式会社, Nippon Telegr & Teleph Corp Power supply switching circuit
    US-9327604-B2May 03, 2016Kabushiki Kaisha ToshibaElectric vehicle control apparatus and electric vehicle
    US-9548630-B2January 17, 2017Toshiba Mitsubishi-Electric Industrial Systems CorporationCompact uninterruptible power supply apparatus with cooling units
    US-9775266-B2September 26, 2017Toshiba Mitsubishi-Electric Industrial Systems CorporationModular uninterruptible power supply apparatus