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公开(公告)号：US08766575B2
公开(公告)日：2014-07-01
申请号：US13816296
申请日：2011-07-26
IPC分类号： H02P6/18
摘要： A synchronous electric motor drive system capable of driving at speeds near zero is provided. An energization mode determination unit switches six energization modes successively based on a terminal potential detected of the de-energized phase of a three-phase synchronous electric motor or on a stator winding wire connection point potential (neutral point potential) detected of the three-phase synchronous transmission unit. A voltage command correction unit corrects by a correction amount ΔV an applied voltage command destined for the synchronous electric motor to supply the synchronous electric motor with a repeated waveform of a positive pulse, negative pulse, and zero voltage as a line voltage waveform of the energized phases in each of the six energization modes, the positive pulse voltage being polarized to cause the synchronous electric motor to generate a forward rotation torque, the negative pulse voltage causing the synchronous electric motor to generate a reverse rotation torque.
摘要翻译： 提供能够以接近零的速度行驶的同步电动机驱动系统。 通电模式确定单元基于检测到三相同步电动机的去电相位的终端电位或者检测到的三相同步电动机的定子绕组线连接点电位（中性点电位），连续地切换六个通电模式 同步传输单元。 电压指令校正单元通过校正量Dgr校正; V是用于同步电动机的施加电压指令，向同步电动机提供正脉冲，负脉冲和零电压的重复波形作为线电压波形 在六个通电模式中的每一个中的通电相位，正脉冲电压被极化以使同步电动机产生正向转矩，负脉冲电压引起同步电动机产生反向转矩。
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公开(公告)号：US20140077738A1
公开(公告)日：2014-03-20
申请号：US14116263
申请日：2011-05-13
IPC分类号： H02P6/18
摘要： A position sensor-less driving method is provided that can drive rotation speed/torque control of a permanent magnet motor using an inverter with an ideal sinusoidal current with the minimum number of switching, and can drive at a speed as low as an extremely low speed region close to zero speed. A neutral point potential of a permanent magnet motor is detected in synchronization with PWM waveform of the inverter. A rotor position of the permanent magnet motor is estimated from change of the neutral point potential. When the neutral point potential is detected, timing of each phase of the PWM waveform is shifted to generate three or four types of switch states of which output voltage of the inverter is not zero vector, and neutral point potentials in at least two types of switch states among them are sampled, whereby rotor position of the three-phase synchronous motor is estimated.
摘要翻译： 提供一种无位置传感器驱动方法，其可以使用具有最小切换次数的理想正弦电流的逆变器来驱动永磁电动机的转速/转矩控制，并且可以以极低速度的速度驱动 区域接近零速度。 与变频器的PWM波形同步地检测永磁电动机的中性点电位。 根据中性点电位的变化估计永磁电动机的转子位置。 当检测到中性点电位时，PWM波形的每相的定时被移位以产生三个或四种类型的开关状态，其中逆变器的输出电压不为零矢量，并且至少两种开关中的中性点电位 对其中的状态进行采样，由此估计三相同步电动机的转子位置。
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公开(公告)号：US08878480B2
公开(公告)日：2014-11-04
申请号：US13559267
申请日：2012-07-26
摘要： In sequentially selecting and driving two phases of the three-phase stator windings of a synchronous motor, detect a speed electromotive voltage of a de-energized phase, relate the speed electromotive voltage to rotor position information beforehand, then count rotor position information backward based on the detected the speed electromotive voltage to estimate rotor position; and then detect rotation speed from the change rate of the rotor position information so as to achieve highly accurate position and speed control.
摘要翻译： 在顺序地选择和驱动同步电动机的三相定子绕组的两相中，检测去电相位的速度电动势，预先将速动电压与转子位置信息相关联，然后基于 检测出速度电动势估计转子位置; 然后从转子位置信息的变化率检测转速，以实现高精度的位置和速度控制。
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公开(公告)号：US20130243625A1
公开(公告)日：2013-09-19
申请号：US13816296
申请日：2011-07-26
摘要： A synchronous electric motor drive system capable of driving at speeds near zero is provided. An energization mode determination unit switches six energization modes successively based on a terminal potential detected of the de-energized phase of a three-phase synchronous electric motor or on a stator winding wire connection point potential (neutral point potential) detected of the three-phase synchronous transmission unit. A voltage command correction unit corrects by a correction amount ΔV an applied voltage command destined for the synchronous electric motor to supply the synchronous electric motor with a repeated waveform of a positive pulse, negative pulse, and zero voltage as a line voltage waveform of the energized phases in each of the six energization modes, the positive pulse voltage being polarized to cause the synchronous electric motor to generate a forward rotation torque, the negative pulse voltage causing the synchronous electric motor to generate a reverse rotation torque.
摘要翻译： 提供能够以接近零的速度行驶的同步电动机驱动系统。 通电模式确定单元基于检测到三相同步电动机的去电相位的终端电位或者检测到的三相同步电动机的定子绕组线连接点电位（中性点电位），连续地切换六个通电模式 同步传输单元。 电压指令校正单元通过校正量DeltaV来校正用于同步电动机的施加电压指令，以向正向脉冲，负脉冲和零电压的重复波形供给同步电动机作为通电的线电压波形 在六个通电模式中的每一个相位中，正脉冲电压被极化以使同步电动机产生正向转矩，负脉冲电压引起同步电动机产生反向转矩。
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公开(公告)号：US20130057193A1
公开(公告)日：2013-03-07
申请号：US13559267
申请日：2012-07-26
IPC分类号： H02P6/00
摘要： In sequentially selecting and driving two phases of the three-phase stator windings of a synchronous motor, detect a speed electromotive voltage of a de-energized phase, relate the speed electromotive voltage to rotor position information beforehand, then count rotor position information backward based on the detected the speed electromotive voltage to estimate rotor position; and then detect rotation speed from the change rate of the rotor position information so as to achieve highly accurate position and speed control.
摘要翻译： 在顺序地选择和驱动同步电动机的三相定子绕组的两相中，检测去电相位的速度电动势，预先将速动电压与转子位置信息相关联，然后基于 检测出速度电动势估计转子位置; 然后从转子位置信息的变化率检测转速，以实现高精度的位置和速度控制。
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公开(公告)号：US09325264B2
公开(公告)日：2016-04-26
申请号：US14391578
申请日：2012-04-12
摘要： An electric motor drive device 1000 includes: an inverter 3 that drives a motor 4, a voltage division circuit 2 that serves as a neutral point potential detection unit that detects a neutral point potential of a stator winding of the motor 4; and a controller 1 that estimates a rotor position of the motor 4 based on the detected neutral point potential, and that controls the inverter 3 based on an estimation result. A ground potential of the controller 1 is set to a negative side potential or a positive side potential of a DC voltage that is supplied to the inverter 3. The voltage division circuit 2 detects the neutral point potential with reference to the negative side potential or the positive side potential. The controller 1 estimates the rotor position based on a difference between a first neutral point potential detected during the ON/OFF operation of the inverter 3 and a first fixed reference potential (⅔)Emax, and based on a difference between a second neutral point potential detected during the ON/OFF operation and a second fixed reference potential (⅓)Emax.
摘要翻译： 电动机驱动装置1000包括：驱动电动机4的逆变器3，用作检测电动机4的定子绕组的中性点电位的中性点电位检测单元的分压电路2; 以及控制器1，其基于检测到的中性点电位来估计电动机4的转子位置，并且基于估计结果来控制逆变器3。 控制器1的接地电位被设置为提供给逆变器3的直流电压的负侧电位或正侧电位。分压电路2参考负侧电位或 正面潜力 控制器1基于在逆变器3的接通/断开操作期间检测到的第一中性点电位与第一固定参考电位（⅔）Emax之间的差异，并且基于第二中性点电位 在ON / OFF操作期间检测到第二固定参考电位（1/3）Emax。
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公开(公告)号：US20150069941A1
公开(公告)日：2015-03-12
申请号：US14391625
申请日：2012-04-12
IPC分类号： H02P6/18
摘要： A three-phase synchronous motor drive device includes: a three-phase inverter 3 that drives a motor 4 that is as a three-phase synchronous motor, and that includes switching elements for three phases; a controller 2 that functions as a control unit that selects four switched states from a plurality of switched states that represent on/off states of the switching elements for the three phases, and that sequentially controls the three-phase inverter in the four switched states; a neutral point potential amplifier 13 that functions as a neutral point potential detection unit that detects a neutral point potential Vn0 of stator windings (Lu, Lv, Lw) of the motor 4 in each of the four switched states. It is configured that a rotor position of the three-phase synchronous motor is estimated over a full range of an electrical angle cycle based on at least three of four neutral point potentials detected in the four switched states.
摘要翻译： 三相同步电动机驱动装置包括：三相逆变器3，其驱动作为三相同步电动机的电动机4，其包括三相的开关元件; 控制器2用作控制单元，其从表示三相开关元件的开/关状态的多个开关状态中选择四个开关状态，并且以四个开关状态顺序地控制三相逆变器; 用作中性点电位检测单元的中性点电位放大器13，其检测四个切换状态中的每一个中的电机4的定子绕组（Lu，Lv，Lw）的中性点电位Vn0。 其被配置为基于四个切换状态中检测到的四个中性点电位中的至少三个，在电角度周期的全范围内估计三相同步电动机的转子位置。
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公开(公告)号：US20150155805A1
公开(公告)日：2015-06-04
申请号：US14391578
申请日：2012-04-12
IPC分类号： H02P6/18
摘要： An electric motor drive device 1000 includes: an inverter 3 that drives a motor 4, a voltage division circuit 2 that serves as a neutral point potential detection unit that detects a neutral point potential of a stator winding of the motor 4; and a controller 1 that estimates a rotor position of the motor 4 based on the detected neutral point potential, and that controls the inverter 3 based on an estimation result. A ground potential of the controller 1 is set to a negative side potential or a positive side potential of a DC voltage that is supplied to the inverter 3. The voltage division circuit 2 detects the neutral point potential with reference to the negative side potential or the positive side potential. The controller 1 estimates the rotor position based on a difference between a first neutral point potential detected during the ON/OFF operation of the inverter 3 and a first fixed reference potential (⅔)Emax, and based on a difference between a second neutral point potential detected during the ON/OFF operation and a second fixed reference potential (⅓)Emax.
摘要翻译： 电动机驱动装置1000包括：驱动电动机4的逆变器3，用作检测电动机4的定子绕组的中性点电位的中性点电位检测单元的分压电路2; 以及控制器1，其基于检测到的中性点电位来估计电动机4的转子位置，并且基于估计结果来控制逆变器3。 控制器1的接地电位被设置为提供给逆变器3的直流电压的负侧电位或正侧电位。分压电路2参考负侧电位或 正面潜力 控制器1基于在逆变器3的接通/断开操作期间检测到的第一中性点电位与第一固定参考电位（⅔）Emax之间的差异，并且基于第二中性点电位 在ON / OFF操作期间检测到第二固定参考电位（1/3）Emax。
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公开(公告)号：US06759777B2
公开(公告)日：2004-07-06
申请号：US10207264
申请日：2002-07-30
IPC分类号： H02K2114
CPC分类号： F04B35/04 , F25B49/025 , F25B2600/021 , H02K1/187 , H02K1/2733 , H02K1/2766 , H02K7/14 , H02K21/14 , H02K29/06 , Y02B30/741
摘要： A permanent magnetic type electric rotating machine includes: a stator having armature winding arranged in several slots formed in a stator core; and a rotor having permanent magnets held in several permanent magnetic insertion holes formed in a rotor core, in which a peripheral surface of the rotor core is configured to be a combination of arcs around two points different from a center of the rotor core for each magnetic pole in such a manner that when an axis extending in a central direction of a magnetic pole of the rotor is a d axis, and an axis extending in a direction between magnetic poles that is offset from the central direction of the magnetic pole by 90 electrical degrees is a q axis, a radial distance from a center of the rotor core to a periphery of the rotor is reduced gradually from the d axis to the q axis.
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公开(公告)号：US5446018A
公开(公告)日：1995-08-29
申请号：US117089
申请日：1993-09-15
IPC分类号： F16C19/30 , F16C32/00 , F16C32/04 , F16C39/02 , F16C39/06 , H02J15/00 , B60L13/04 , H02K7/09
CPC分类号： F16C32/0438 , F16C39/02 , Y10S505/903
摘要： A superconducting bearing device for supporting a rotary shaft (rotary body) 2 in a noncontact state for rotation at a high speed. A superconducting bearing 4 for supporting the rotary shaft 2 in a noncontact state relative to a housing 1 comprises permanent magnets 14 mounted on the rotary shaft 2, and Type II superconductors 17 attached to the housing 1 and opposed to the magnets as vertically spaced apart therefrom. A mechanical catcher bearing 21 comprising a thrust ball bearing is disposed between the housing 1 and the rotary shaft 2 at opposed portions thereof. An initial position determining mechanism is provided for lifting a bearing ring 23 of the catcher bearing 21 on the housing 1 to position the housing 1 and the rotary shaft 2 in place relative to each other, whereby the superconductors 17 and the permanent magnets 14 on the shaft 2 can be positioned in place relative to each other. The superconducting bearing 4 can be operated efficiently by suitably determining the relative position. The catcher bearing 21 prevents damage to the rotary shaft 2 and parts therearound when the superconductors 17 of the bearing 4 become normally conductive.
摘要翻译： PCT No.PCT / JP92 / 00302 Sec。 371日期：1993年11月19日 102（e）日期1993年11月19日PCT 1991年3月13日PCT公布。 公开号WO92 / 16761 日期：1992年10月1日。一种用于以非接触状态支撑高速旋转的旋转轴（旋转体）2的超导轴承装置。 用于相对于壳体1以非接触状态支撑旋转轴2的超导轴承4包括安装在旋转轴2上的永磁体14和附接到壳体1并与其垂直间隔开的磁体相对的II型超导体17 。 包括推力球轴承的机械捕集器轴承21在其相对的部分处设置在壳体1和旋转轴2之间。 提供初始位置确定机构用于将夹持器21的轴承环23提升到壳体1上，以将壳体1和旋转轴2相对于彼此定位就位，由此超导体17和永磁体14 轴2可以相对于彼此定位在适当位置。 通过适当地确定相对位置，可以有效地操作超导轴承4。 当轴承4的超导体17变得正常导电时，捕获器轴承21防止损坏旋转轴2及其周围的部件。
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