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公开(公告)号：US20140271272A1
公开(公告)日：2014-09-18
申请号：US14205614
申请日：2014-03-12
Applicant: LG Electronics Inc.
Inventor： Jonghyun JEON , Taeyoung PARK , Jungsong MOON , Sangyoung KIM , Joonsik AN
CPC classification number: H02P27/06 , F24F11/89 , H02M7/06 , H02M7/1552
Abstract: A power converter and an air conditioner having the same, in which the power converter includes a rectifying unit configured to rectify an input AC current and an interleave converter that has a plurality of converters and that is configured to convert rectified output from the rectifying unit to DC power and output the converted DC power. The power converter also includes a capacitor connected to an output terminal of the interleave converter, and a converter controller configured to control the interleave converter. The converter controller controls the interleave converter by calculating a load level of both terminals of the capacitor and changing a number of operating converters in the plurality of converters of the interleave converter based on the determined load level of both terminals of the capacitor.
Abstract translation: 一种功率转换器和具有该功率变换器的空调机，其特征在于，所述功率转换器包括：整流单元，被配置为对输入的交流电流进行整流;以及整流单元，具有多个转换器，并且被配置为将整流单元的整流输出转换为 直流电源并输出转换的直流电源。 功率转换器还包括连接到交织转换器的输出端的电容器和被配置为控制交错转换器的转换器控制器。 转换器控制器通过计算电容器的两端的负载电平并根据确定的电容器的两端的负载水平来改变交错转换器的多个转换器中的工作转换器的数量来控制交错转换器。
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公开(公告)号：US20210247120A1
公开(公告)日：2021-08-12
申请号：US17173679
申请日：2021-02-11
Applicant: LG Electronics Inc.
Inventor： Jinho CHO , Taeyoung PARK , Jongwon HEO
Abstract: A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.
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公开(公告)号：US20230052725A1
公开(公告)日：2023-02-16
申请号：US17791016
申请日：2021-01-05
Applicant: LG Electronics Inc.
Inventor： Seungwoo CHAE , Taeyoung PARK , Jinho CHO
Abstract: The present disclosure relates to a converter for an air conditioner. The converter includes a substrate; an inductor disposed in one side of the substrate, and comprising a core and a coil wound around the core; a switching element disposed in one side of the substrate, and selectively controlling a flow of a circuit; and a heat sink for absorbing heat generated from the switching element by contacting the switching element, wherein a lead-in hole is formed in one side of the substrate, and at least a portion of the inductor is disposed in the lead-in hole, thereby quickly discharging the heat generated by the inverter and more efficiently using a space.
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公开(公告)号：US20180062551A1
公开(公告)日：2018-03-01
申请号：US15692029
申请日：2017-08-31
Applicant: LG ELECTRONICS INC.
Inventor： Jungsong MOON , Taeyoung PARK , Sangyoung KIM
CPC classification number: H02P21/24 , H02M7/44 , H02M7/5387 , H02M2001/0054 , H02M2007/53876 , H02P21/12 , H03K2217/0036 , Y02B70/1491
Abstract: The present disclosure relates to a motor driving apparatus and a home appliance including the same. The motor driving apparatus in accordance with an embodiment of the present disclosure, comprises a DC-stage capacitor, a three-phase upper arm and lower arm switching element, an inverter to convert DC power from the DC-stage capacitor to an AC power by a switching operation and output the converted AC power to a motor, and a controller to control the inverter, wherein the controller controls the switching elements in the inverter based on a space vector-based pulse width variable, and controls a turn-on time of the switching elements to be shifted, wherein continuous first and second switching periods of the switching elements is changed to one switching period by shifting the a turn-on time of the switching elements. Accordingly, when the inverter is switched, noise can be reduced while reducing switching loss.
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