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    • 2. 发明授权
    • Synchronous electric motor
    • 同步电动机
    • US08519592B2
    • 2013-08-27
    • US13054074
    • 2009-07-27
    • Noriyoshi NishiyamaMasaki TagomeYasuhiro KondoMakoto KitabatakeShun Kazama
    • Noriyoshi NishiyamaMasaki TagomeYasuhiro KondoMakoto KitabatakeShun Kazama
    • H02K3/04H02K1/00
    • H02K29/03H02K3/28H02K21/222H02K2213/03
    • A synchronous electric motor includes rotor having a plurality of radially-oriented magnetic dipoles and a stator. Stator teeth group with a plurality of sets of stator teeth are arranged in the same position in terms of an electrical angle with another stator teeth group to provide rotational symmetry about an axis of the rotor. In each of the stator teeth groups a predetermined number of stator teeth are arranged at intervals different from intervals of the rotor magnetic dipoles. A main coil is wound about a predetermined number of stator teeth with a sub-coil further wound around one or more a teeth. Phase and magnitude of a resulting magnetic field is adjusted by the number of loops of the main coil and sub-coil. A given stator tooth can produce maximum torque despite any difference between an alignment of the stator tooth and an inter-polar interval of the stator.
    • 同步电动机包括具有多个径向取向的磁偶极子和定子的转子。 具有多组定子齿的定子齿组以与另一个定子齿组的电角度相同的位置布置,以提供围绕转子的轴线的旋转对称。 在每个定子齿组中,以与转子磁偶极子的间隔不同的间隔布置预定数量的定子齿。 主线圈围绕预定数量的定子齿缠绕,子线圈进一步缠绕在一个或多个齿上。 所得到的磁场的相位和幅度通过主线圈和次线圈的回路数来调节。 给定的定子齿可以产生最大扭矩,尽管定子齿的对准和定子的极间间隔有任何差异。
    • 7. 发明授权
    • Electric power converting apparatus and induction heating apparatus
    • 电力转换装置和感应加热装置
    • US09179504B2
    • 2015-11-03
    • US13062302
    • 2010-07-30
    • Shun KazamaMasaki TagomeMakoto Kitabatake
    • Shun KazamaMasaki TagomeMakoto Kitabatake
    • H05B6/04H05B6/06H02M1/14
    • H05B6/062H02M1/14H05B6/04
    • To aim to reduce ripple current flowing through a capacitor in a power converter apparatus including a converter, the capacitor and an inverter. A current sensor 6 is connected between a capacitor 5 and an inverter circuit 7 for detecting current Iinv flowing from the capacitor 5 to the inverter circuit 7. A frequency detecting subunit 11 performs fast Fourier transform on a waveform of the current Iinv to detect a frequency of a frequency component having the largest amplitude. Also, the frequency detecting subunit 12 detects a zero-cross point of the frequency component having the largest amplitude. Then a carrier signal control subunit 13 performs control such that a frequency and a rise time of a PWM carrier signal for driving the converter circuit 4 match the frequency and the zero-cross point that have been detected by the frequency detecting subunit 11 and the phase detecting subunit 12.
    • 旨在减少在包括转换器,电容器和逆变器的功率转换器装置中流过电容器的纹波电流。 电流传感器6连接在电容器5和逆变器电路7之间,用于检测从电容器5流向逆变器电路7的电流Iinv。频率检测子单元11对电流Iinv的波形执行快速傅里叶变换,以检测频率 具有最大振幅的频率分量。 此外,频率检测子单元12检测具有最大振幅的频率分量的零交叉点。 然后,载波信号控制子单元13执行控制,使得用于驱动转换器电路4的PWM载波信号的频率和上升时间与由频率检测子单元11检测到的频率和零交叉点相匹配, 检测子单元12。
    • 8. 发明授权
    • Power conversion circuit having off-voltage control circuit
    • 电源转换电路具有断电控制电路
    • US08363440B2
    • 2013-01-29
    • US12864856
    • 2009-12-16
    • Masaki TagomeMakoto KitabatakeShun Kazama
    • Masaki TagomeMakoto KitabatakeShun Kazama
    • H02M7/537H02P1/00
    • H02M1/28
    • In a power conversion circuit operating with high frequency, an off-voltage control circuit 101u of a lower-arm gate drive circuit 24u controls the output voltage of a gate drive power supply 103u to change the output voltage to a voltage lower than a predetermined off voltage during a time period from termination of turn-off operation of a lower arm 22u until start of turn-on operation of an upper arm 21u, and thereafter return the output voltage to the predetermined off voltage immediately after termination of the turn-on operation of the upper arm 21u. With this control, short-circuiting through the upper and lower arms occurring due to a high voltage change dv/dt can be avoided, and the life of a switching element constituting the power conversion circuit improves, increasing the reliability of the power conversion circuit.
    • 在以高频工作的电力转换电路中,下臂栅极驱动电路24u的截止电压控制电路101u控制栅极驱动电源103u的输出电压,将输出电压变更为低于预定的电压 在从下臂22u的关断动作结束到上臂21u的接通动作开始的期间的电压,然后在接通动作结束后立即将输出电压返回到规定的关闭电压 的上臂21u。 通过该控制,可以避免由于高电压变化dv / dt而产生的上臂和下臂的短路,并且构成功率转换电路的开关元件的寿命提高,从而提高了电力转换电路的可靠性。
    • 10. 发明申请
    • POWER CONVERSION CIRCUIT
    • 电源转换电路
    • US20100301784A1
    • 2010-12-02
    • US12864856
    • 2009-12-16
    • Masaki TagomeMakoto KitabatakeShun Kazama
    • Masaki TagomeMakoto KitabatakeShun Kazama
    • H02P1/02
    • H02M1/28
    • In a power conversion circuit operating with high frequency, an off-voltage control circuit 101u of a lower-arm gate drive circuit 24u controls the output voltage of a gate drive power supply 103u to change the output voltage to a voltage lower than a predetermined off voltage during a time period from termination of turn-off operation of a lower arm 22u until start of turn-on operation of an upper arm 21u, and thereafter return the output voltage to the predetermined off voltage immediately after termination of the turn-on operation of the upper arm 21u. With this control, short-circuiting through the upper and lower arms occurring due to a high voltage change dv/dt can be avoided, and the life of a switching element constituting the power conversion circuit improves, increasing the reliability of the power conversion circuit.
    • 在以高频工作的电力转换电路中,下臂栅极驱动电路24u的截止电压控制电路101u控制栅极驱动电源103u的输出电压,将输出电压变更为低于预定的电压 在从下臂22u的关断动作结束到上臂21u的接通动作开始的期间的电压,然后在接通动作结束后立即将输出电压返回到规定的关闭电压 的上臂21u。 通过该控制,可以避免由于高电压变化dv / dt而产生的上臂和下臂的短路,并且构成功率转换电路的开关元件的寿命提高,从而提高了电力转换电路的可靠性。