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    • 1. 发明申请
    • Motor control device
    • 电机控制装置
    • US20060290312A1
    • 2006-12-28
    • US11372216
    • 2006-03-10
    • Kazunobu NagaiTsuyoshi ShinoharaHiromi OkaToshikazu Sekihara
    • Kazunobu NagaiTsuyoshi ShinoharaHiromi OkaToshikazu Sekihara
    • G05B11/28H02P23/00
    • H02P6/182H02P25/024
    • A motor control device for controlling a permanent magnet motor includes a current detector detecting current flowing through three-phase windings, an induced voltage computing unit obtaining voltage induced at each phase from the detected three-phase winding current based on a phase voltage equation, a position detector detecting a rotational position of the rotor from the induced voltage of each phase computed by the induced current computing unit, the rotational position of the rotor having a 6n resolution where n is an integer equal to or larger than 1, an energization phase control unit determining a phase to be energized based on the rotational position of the rotor and a phase command, an energization signal forming unit forming a 6n-resolution three-phase energization signal, and an energizing unit carrying out PWM modulation for the three-phase energization signal, supplying voltage according to the modulated three-phase energization signal to each of the three-phase windings.
    • 用于控制永磁电动机的电动机控制装置包括电流检测器,其检测流过三相绕组的电流;感应电压计算单元,基于相电压方程,从检测到的三相绕组电流获得在各相感应的电压; 位置检测器,根据由感应电流计算单元计算出的各相感应电压检测转子的旋转位置,转子的旋转位置为6n分辨率,n为1以上的整数,通电相位控制 基于转子的旋转位置和相位指令确定要通电的相位,形成6n分辨率三相通电信号的通电信号形成单元和对三相通电进行PWM调制的通电单元 信号,根据调制的三相通电信号向每个三相绕组提供电压。
    • 2. 发明授权
    • Motor control device
    • 电机控制装置
    • US07304452B2
    • 2007-12-04
    • US11372216
    • 2006-03-10
    • Kazunobu NagaiTsuyoshi ShinoharaHiromi OkaToshikazu Sekihara
    • Kazunobu NagaiTsuyoshi ShinoharaHiromi OkaToshikazu Sekihara
    • H02P23/00
    • H02P6/182H02P25/024
    • A motor control device for controlling a permanent magnet motor includes a current detector detecting current flowing through three-phase windings, an induced voltage computing unit obtaining voltage induced at each phase from the detected three-phase winding current based on a phase voltage equation, a position detector detecting a rotational position of the rotor from the induced voltage of each phase computed by the induced current computing unit, the rotational position of the rotor having a 6n resolution where n is an integer equal to or larger than 1, an energization phase control unit determining a phase to be energized based on the rotational position of the rotor and a phase command, an energization signal forming unit forming a 6n-resolution three-phase energization signal, and an energizing unit carrying out PWM modulation for the three-phase energization signal, supplying voltage according to the modulated three-phase energization signal to each of the three-phase windings.
    • 用于控制永磁电动机的电动机控制装置包括电流检测器,其检测流过三相绕组的电流;感应电压计算单元,基于相电压方程,从检测到的三相绕组电流获得在各相感应的电压; 位置检测器,根据由感应电流计算单元计算出的各相感应电压检测转子的旋转位置,转子的旋转位置为6n分辨率,n为1以上的整数,通电相位控制 基于转子的旋转位置和相位指令确定要通电的相位,形成6n分辨率三相通电信号的通电信号形成单元和对三相通电进行PWM调制的通电单元 信号,根据调制的三相通电信号向每个三相绕组提供电压。
    • 5. 发明授权
    • Motor control device, motor drive system, washing machine, air conditioner and method of changing magnetization amount of permanent magnet motor
    • 电动机控制装置,电动机驱动系统,洗衣机,空调及永磁电动机磁化量变化方法
    • US08129931B2
    • 2012-03-06
    • US12428840
    • 2009-04-23
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • Sari MaekawaKazunobu NagaiIsamu Nitta
    • H02P21/00
    • H02P21/14
    • A motor control device includes a magnetization control unit energizing a motor winding to change magnetic flux content of permanent magnet motor, a current detector detecting current supplied to the motor, a vector control unit including a speed/position estimation unit carrying out an operation to estimate a motor rotational speed and rotational position, the vector control unit carrying out a vector control of the motor, an induced voltage detector detecting an induced voltage of the motor based on the rotational speed, motor currents obtained by the vector control unit, output voltages of the drive unit, a winding inductance or the motor constant and a winding resistance, an induced voltage command determining unit determining an induced voltage command based on the motor rotational speed and output torque, and a magnetization current determining unit determining an amount of energization based on the induced voltage of the motor and the induced voltage command.
    • 一种电动机控制装置,包括对电动机绕组通电以改变永磁电动机的磁通量的磁化控制装置,电流检测器检测供给电动机的电流;矢量控制单元,包括执行估计的操作的速度/位置估计单元 马达旋转速度和旋转位置,矢量控制单元执行马达的矢量控制,感测电压检测器,基于转速检测马达的感应电压,由矢量控制单元获得的马达电流,输出电压 驱动单元,绕组电感或电动机常数和绕组电阻,感应电压指令确定单元,基于电动机转速和输出转矩来确定感应电压指令;以及磁化电流确定单元,其基于 电机的感应电压和感应电压指令。
    • 6. 发明授权
    • Motor controller, control system, and control method
    • 电机控制器,控制系统和控制方法
    • US07859215B2
    • 2010-12-28
    • US12053823
    • 2008-03-24
    • Kazunobu NagaiSari Maekawa
    • Kazunobu NagaiSari Maekawa
    • G05B19/31
    • H02P21/22
    • A motor controller includes a reference signal generator; an A/D converter performing A/D conversion of the cosine and the sine signals outputted from a resolver; a first amplitude calculator calculating cosine and sine signal amplitudes based on twice-A/D converted cosine and sine signals respectively; a second amplitude calculator calculating averages of the cosine and the sine signals, and that calculates the amplitude of the cosine signal from a difference between the cosine signal average and a latest A/D converted cosine signal, and that calculates the amplitude of the sine signal from a difference between the sine signal average and a latest A/D converted sine signal; a synthesizer synthesizing the cosine and sine signal amplitudes obtained by the first and the second amplitude calculators respectively; a rotational angle calculator calculating a rotational angle based on the synthesized cosine and sine signal amplitudes; and a PWM controller.
    • 电机控制器包括参考信号发生器; A / D转换器执行从解析器输出的余弦和正弦信号的A / D转换; 第一幅度计算器分别基于两倍A / D转换的余弦和正弦信号来计算余弦和正弦信号幅度; 计算余弦和正弦信号的平均值的第二幅度计算器,并且根据余弦信号平均值与最新的A / D转换余弦信号之间的差计算余弦信号的幅度,并计算正弦信号的幅度 从正弦信号平均和最新的A / D转换正弦信号之间的差异; 合成器分别合成由第一和第二振幅计算器获得的余弦和正弦信号幅度; 旋转角度计算器,基于所述合成余弦和正弦信号幅度来计算旋转角度; 和PWM控制器。
    • 9. 发明授权
    • Inverter and air conditioner controlled by the same
    • 变频器和空调由相同控制
    • US5486743A
    • 1996-01-23
    • US153525
    • 1993-11-16
    • Kazunobu Nagai
    • Kazunobu Nagai
    • H02P6/06H02P6/08
    • H02P6/06H02P6/085
    • An inverter controlling a brushless motor includes a microcomputer detecting a rotational position of a motor rotor on the basis of comparison signals obtained by comparison of terminal voltages of respective windings of the brushless motor with a reference voltage, determining a commutation timing. The current flowing through a DC power line is detected by a shunt resistor and the detected current is sampled and compared sequentially by the microcomputer. The microcomputer obtains a compensation time period in accordance with the result of comparison. The commutation timing of each of switching transistors of the inverter is compensated with respect to a reference commutation timing by the obtained compensation time period. Alternatively, the microcomputer detects energization time periods of diodes as the commutation time periods on the basis of the comparison signals and determine the commutation timing from the detected commutation time periods. The commutation timing is compensated by the compensation time period with respect to the reference commutation timing.
    • 控制无刷电动机的逆变器包括微型计算机,其基于通过将无刷电动机的各个绕组的端子电压与参考电压进行比较而获得的比较信号来检测电动机转子的旋转位置,确定换向定时。 通过分流电阻检测流过直流电源线的电流,并且由微型计算机依次对检测到的电流进行采样和比较。 微型计算机根据比较结果获得补偿时间。 逆变器的每个开关晶体管的换向定时相对于基准换向定时被补偿所获得的补偿时间段。 或者,微计算机根据比较信号来检测作为换流时间的二极管的通电时间周期,并根据检测到的换流时间确定换流定时。 通过相对于参考换向定时的补偿时间段来补偿换向定时。
    • 10. 发明授权
    • Washer dryer
    • 洗衣机烘干机
    • US08424347B2
    • 2013-04-23
    • US12548914
    • 2009-08-27
    • Sari MaekawaKazunobu NagaiTsuyoshi Hosoito
    • Sari MaekawaKazunobu NagaiTsuyoshi Hosoito
    • D06F37/30D06F25/00
    • D06F33/02D06F25/00D06F37/304D06F39/006D06F58/206D06F58/28D06F2058/287H02P3/18H02P3/22H02P21/36Y02B30/52Y02B40/52
    • A washer dryer including a DC power supply generator that generates a DC power supply from an AC power supply; a heat pump that circulates refrigerant between a compressor, a condenser and an evaporator; an air circulatory path that circulates air between the condenser and the evaporator; a first inverter circuit that receives the DC power supply to drive a compressor motor; a rotary tub disposed rotatably within an exterior tub; a rotary tub motor that directly drives the rotary tub at least during dehydration; a second inverter circuit that receives the DC power supply having an output terminal connected to windings of the rotary tub motor; a voltage detector that detects DC voltage occurring between the second inverter circuit and a power supply bus; a brake controller that controls the DC voltage within a predetermined range by controlling a regenerative electric power when braking is applied.
    • 一种洗衣机干燥机,包括从AC电源产生直流电源的直流电源发生器; 使制冷剂在压缩机,冷凝器和蒸发器之间循环的热泵; 在冷凝器和蒸发器之间循环空气的空气循环路径; 第一逆变器电路,其接收直流电源以驱动压缩机电动机; 可旋转地设置在外桶内的旋转桶; 至少在脱水期间直接驱动旋转桶的旋转桶马达; 第二逆变器电路,其接收具有连接到旋转桶电动机的绕组的输出端子的直流电源; 电压检测器,其检测在所述第二逆变器电路和电源总线之间发生的直流电压; 制动控制器,其通过在施加制动时控制再生电力来将DC电压控制在预定范围内。