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    • 3. 发明授权
    • Inverter device
    • 变频器
    • US07181923B2
    • 2007-02-27
    • US10832297
    • 2004-04-27
    • Yoshiaki KuritaKuniaki TakatukaTatsuo AndoNoriaki YamadaSatoshi Furusawa
    • Yoshiaki KuritaKuniaki TakatukaTatsuo AndoNoriaki YamadaSatoshi Furusawa
    • F25D25/00
    • H02M1/4225F25B49/025F25B2600/021F25B2700/151H02M7/003H02M2001/007Y02B30/741Y02B70/126
    • An inverter device for variably controlling an operating frequency of an electric motor, which drives a compressor in a refrigerating cycle. the inverter includes a box-like resin case, having a metal film for shielding being applied or plated on a surface thereof and having a step portion on which a terminal block for the motor is arranged. A first substrate having mounted thereon power semiconductor devices constituting a converter and an inverter so as to be immersed in gel, and the first substrate is mounted in the case and brought into proximity of radiation fins at a reverse surface thereof. A second substrate having mounted thereon interface connectors into which signals from detection sensors for temperatures and pressures in the refrigerating cycle are input and photo-couplers for transmitting the input signals, and the second substrate is mounted in the case above the first substrate.
    • 一种逆变器装置,用于可变地控制在制冷循环中驱动压缩机的电动机的工作频率。 逆变器包括盒形树脂壳体,其具有用于屏蔽的金属膜被施加或镀在其表面上,并具有设置有用于电动机的端子块的台阶部分。 第一基板,其上安装有构成转换器的功率半导体器件和逆变器以便浸入凝胶中,并且第一基板安装在壳体中并且在其反面附近被接近散热片。 第二基板,其上安装有界面连接器,输入来自检测传感器的温度和制冷循环中的温度和压力的信号,以及用于传输输入信号的光耦合器,第二基板安装在第一基板上方的壳体中。
    • 9. 发明授权
    • Driving system of AC motor
    • US06531843B2
    • 2003-03-11
    • US09941791
    • 2001-08-30
    • Yoshitaka IwajiTsunehiro EndoHiroshi FujiiTatsuo Ando
    • Yoshitaka IwajiTsunehiro EndoHiroshi FujiiTatsuo Ando
    • H02P124
    • H02P6/085H02P6/18
    • The present invention provides a control algorithm which instantaneously detects magnetic pole positions in the inside of a motor including polarities of the motor. A controller 1 applies a minute voltage change vhd to a voltage command on a dc axis which constitutes an estimation magnetic pole axis of the motor 3, detects electric currents Idc, Iqc of a motor 3 and discriminates the polarities of the magnetic pole axes by making use of the difference between a cycle in which ripple components of the electric currents Idc, Iqc become positive and a cycle in which the ripple components become negative or the difference between positive-side and negative-side current change rates. Further, the minute voltage change vhd with respect to the above-mentioned voltage command is generated on both of the dc axis and the qc axis rectangular thereto, and the magnetic pole positions of the motor are directly estimated based on the current ripple components on the respective axes. Without separately providing a cycle for discriminating the polarities of the magnetic poles, the cycle from the turning-on of a power source to the starting of the motor can be shortened so that the high-speed starting of the motor can be realized.