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    MOTOR POWER FACTOR CORRECTION APPARATUS AND METHOD
    111.
    发明公开
    MOTOR POWER FACTOR CORRECTION APPARATUS AND METHOD 审中-公开
    DEVICE AND METHOD FOR电动机的功率因数校正

    公开(公告)号：EP2179494A1

    公开(公告)日：2010-04-28

    申请号：EP08795263.6

    申请日：2008-08-13

    Applicant: Ramu, Inc.

    Inventor： RAMU, Krishnan

    IPC: H02P1/24

    CPC classification number: H02P25/092 ,  H02P2201/15 ,  Y02P80/112

    Abstract: A power factor correction system includes a rectifier that rectifies the voltage of an alternating current (ac) power source to produce a voltage waveform that transitions, in a half sinusoid, from a minimum amplitude to a maximum amplitude and back to the minimum amplitude twice in the period of the ac power source. A phase winding of a motor conveys current induced by the voltage waveform, and a regulator regulates the flow of the current conveyed by the phase winding for storage as energy in a storage component.

    Driver circuit
    112.
    发明专利
    Driver circuit 有权

    公开(公告)号：JP5337663B2

    公开(公告)日：2013-11-06

    申请号：JP2009238482

    申请日：2009-10-15

    Applicant: 株式会社東芝

    Inventor： 田 雄 喜 鎌 ,  本 博 増 ,  井 洋 永 ,  田 貞 男 池

    IPC: H02P27/06 ,  H02M7/48

    CPC classification number: H02P21/50 ,  H02P2201/09 ,  H02P2201/15

    Abstract: A driver includes a sensor sensing a driving current and a driving voltage for an external device including a capacitor, a PWM, a PFC, and a controller. The PFC includes a phase angle estimation unit estimating a phase angle variation of an input voltage to the PFC based on a parameter regarding the driving current, a voltage compensator compensating an error of the driving voltage, a first current estimation unit estimating a variation of a charge of the capacitor based on the charge current and the phase angle variation estimated by the phase angle estimation unit, a second current estimation unit estimating a driving current variation, and a calculator calculating a duty ratio for the PWM based on the variation of the charge current estimated by the first current estimation unit and the driving current variation estimated by the second current estimation unit.

    Power conversion circuit
    117.
    发明专利
    Power conversion circuit 有权
    电源转换电路

    公开(公告)号：JP2013158096A

    公开(公告)日：2013-08-15

    申请号：JP2012015255

    申请日：2012-01-27

    Applicant: Daikin Ind Ltd ,  ダイキン工業株式会社

    Inventor： TAGUCHI YASUTAKA

    IPC: H02M7/12

    CPC classification number: H02M5/458 ,  H02M1/12 ,  H02M1/4225 ,  H02M7/48 ,  H02M7/537 ,  H02M2001/0048 ,  H02M2001/123 ,  H02P27/06 ,  H02P2201/15 ,  Y02B70/126 ,  Y02B70/1491

    Abstract: PROBLEM TO BE SOLVED: To reduce loss due to passing of a compensation current by outputting the compensation current to a section other than a section where a leakage current is not remarkable.SOLUTION: A diode bridge 11 has a pair of input terminals receiving an alternate current from an AC power supply 3 and a pair of output terminals 111 and 112 outputting a direct current. A step-up chopper circuit 12 is connected to the pair of output terminals 111 and 112 and steps-up a DC voltage inputted thereto. The step-up chopper circuit 12 functions as a power-factor improvement circuit. A smoothing capacitor 13 is connected to an output side of the step-up chopper circuit 12 and smooths a voltage across both the terminals. An inverter 14 receives the voltage across both the terminals of the smoothing capacitor 13 and provides an AC power to a load 4. A leakage-current reduction device 2 outputs a compensation current Ic that compensates a leakage current Ia leaking from the load 4. The leakage current reduction device 2 outputs the compensation current Ic at a point other than the neighborhood of the zero cross of the alternate current inputted from the AC power supply 3.

    Abstract translation: 要解决的问题：通过将补偿电流输出到除了漏电流不显着的部分以外的部分，减少由于补偿电流的通过而导致的损耗。解决方案：二极管电桥11具有一对输入端子， 来自交流电源3的电流和输出直流电流的一对输出端子111和112。 升压斩波电路12连接到一对输出端子111和112，并且升压输入的直流电压。 升压斩波电路12用作功率因数改善电路。 平滑电容器13连接到升压斩波电路12的输出侧，并平滑两端的电压。 反相器14接收平滑电容器13的两端的电压，并向负载4提供AC电力。漏电流降低装置2输出补偿电流Ic，补偿从负载4漏出的漏电流Ia。 泄漏电流降低装置2在从交流电源3输入的交流电流的零交叉点以外的点输出补偿电流Ic。

    Power converter circuit
    118.
    发明专利
    Power converter circuit 有权

    公开(公告)号：JP5201276B1

    公开(公告)日：2013-06-05

    申请号：JP2012015255

    申请日：2012-01-27

    Applicant: ダイキン工業株式会社

    Inventor： 泰貴 田口

    IPC: H02M7/12

    CPC classification number: H02M5/458 ,  H02M1/12 ,  H02M1/4225 ,  H02M7/48 ,  H02M7/537 ,  H02M2001/0048 ,  H02M2001/123 ,  H02P27/06 ,  H02P2201/15 ,  Y02B70/126 ,  Y02B70/1491

    Abstract: By outputting a compensation current in segments other than those during which leakage current is not prominent, this power conversion circuit reduces loss due to providing a compensation current. A diode bridge (11) has a pair of input terminals which input an alternating current from an AC source (3), and a pair of output terminals (111, 112) which output a direct current. A step-up chopper circuit (12) is connected to the pair of output terminals (111, 112), and steps up the inputted direct current voltage. The step-up chopper circuit (12) functions as a power factor correction circuit. A smoothing capacitor (13) is connected to the output side of the step-up chopper circuit (12) and smooths the voltage between the two terminals. An inverter (14) inputs the voltage between both terminals of the smoothing capacitor (13) and applies the AC power to the load (4). A leakage current reduction device (2) outputs a compensation current (Ic) which compensates for the leakage current (Ia) leaked from the load (4). The leakage current reduction device (2) outputs a compensation voltage (Ic) outside of the vicinity of the zero-cross points of the alternating current inputted from the AC source (3).

    Motor of the power factor correction device and method
    119.
    发明专利
    Motor of the power factor correction device and method 有权

    公开(公告)号：JP2010537616A

    公开(公告)日：2010-12-02

    申请号：JP2010521013

    申请日：2008-08-13

    Applicant: ラム インク

    Inventor： クリシュナン ラム

    IPC: H02P25/08 ,  H02M3/155 ,  H02M7/12

    CPC classification number: H02P25/092 ,  H02P2201/15 ,  Y02P80/112

    Abstract: 力率補正システムは、交流電流（ＡＣ）電源の電圧を整流して、ＡＣ電源の周期において２回にわたり半正弦波として最小振幅から最大振幅に遷移して最小振幅に戻る電圧波形、を発生させる整流器、を含んでいる。 モーターの相巻線が、電圧波形によって誘起される電流を伝え、レギュレータが、相巻線によって伝えられる電流の流れを調整して、蓄電コンポーネントにエネルギとして蓄える。

    ELECTRIC MOTOR DRIVE APPARATUS AND METHOD THEREFOR
    120.
    发明申请
    ELECTRIC MOTOR DRIVE APPARATUS AND METHOD THEREFOR 审中-公开

    公开(公告)号：US20180091075A1

    公开(公告)日：2018-03-29

    申请号：US15481608

    申请日：2017-04-07

    Applicant: NXP USA Inc.

    Inventor： Jaroslav MUSIL

    IPC: H02P6/28 ,  H02P6/08 ,  H02P21/00

    CPC classification number: H02P6/28 ,  H02P6/08 ,  H02P21/0085 ,  H02P27/08 ,  H02P2201/03 ,  H02P2201/09 ,  H02P2201/15

    Abstract: An electric motor drive apparatus comprising a voltage converter component arranged to receive a supply voltage signal and output a bus voltage signal, and a motor driver component arranged to receive the bus voltage signal and generate at least one drive signal for an electric motor from the bus voltage signal. The motor driver component is arranged to output a bus voltage feedback signal to the voltage converter component. The voltage converter component is arranged to regulate a voltage level of the bus voltage signal based at least partly on the bus voltage feedback signal output by the motor driver component.

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