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发明公开
CN105594111A 功率转换装置和空调装置 有权

功率转换装置和空调装置
摘要：
本发明的目的在于当发生了瞬时电压下降或瞬时停电时，防止功率因数改善部中所含的开关元件故障。在当功率因数改善部(25)通过使输入电压(V1)升压来进行功率因数改善动作之际商用电源(91)发生了瞬时电压下降或瞬时停电的情况下，瞬时停电控制部(31g)使功率因数改善部(25)中所含的开关元件(Q25a、Q25b、Q25c)断开，从而使功率因数改善动作停止。当商用电源(91)复原时，功率因数改善部(25)仍使功率因数改善动作保持停止。
摘要（英）：

This invention prevents switching elements in a power-factor correction unit from failing due to a momentary voltage drop or a momentary power failure. If utility power (91) exhibits a momentary voltage drop or a momentary power failure while said power-factor correction unit (25) is operating to improve a power factor by increasing an input voltage (V1), a momentary-power-failure control unit (31g) stops power-failure correction by turning off switching elements (Q25a, Q25b, Q25c) in the power-factor correction unit (25). Power-factor correction performed by the power-factor correction unit (25) remains stopped until after utility power (91) is restored.

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