公开(公告)号：US08497651B2

公开(公告)日：2013-07-30

申请号：US13408445

申请日：2012-02-29

Applicant: Xiaohua Tang ,  Zhiyong Du ,  Yongzhuang Zhou ,  Cong Xia ,  Lipin Cheng ,  Hui Ma

Inventor： Xiaohua Tang ,  Zhiyong Du ,  Yongzhuang Zhou ,  Cong Xia ,  Lipin Cheng ,  Hui Ma

IPC: G05B5/00 ,  H02H7/08 ,  H02P1/04 ,  H02P3/00

CPC classification number: H02H7/09 ,  G01R31/026 ,  G01R31/343 ,  H02P29/0243

Abstract: An open phase detection system and method for a three-phase motor is provided. The open phase detection system comprises: a signal generating unit coupled to the three-phase motor and configured to generate a driving signal for driving the three-phase motor; a detecting unit coupled to the signal generating unit, and configured to detect whether the signal generating unit generates the driving signal and to detect three-phase current values of the three-phase motor; and a determining unit coupled to the detecting unit, and configured to determine whether the three-phase motor has open phase according to the three phase current values detected by the detecting unit when the driving signal is detected.

Abstract translation: 提供了一种用于三相电动机的开放相位检测系统和方法。 开放相位检测系统包括：信号发生单元，耦合到三相电动机并且被配置为产生用于驱动三相电动机的驱动信号; 检测单元，耦合到所述信号产生单元，并且被配置为检测所述信号产生单元是否产生所述驱动信号并检测所述三相电动机的三相电流值; 以及确定单元，其耦合到所述检测单元，并且被配置为根据在检测到所述驱动信号时由所述检测单元检测到的三相电流值来确定所述三相电动机是否具有断开相位。

公开(公告)号：US08183808B2

公开(公告)日：2012-05-22

申请号：US12683623

申请日：2010-01-07

Applicant: Xiaohua Tang ,  Zhiyong Du ,  Ting Luo

Inventor： Xiaohua Tang ,  Zhiyong Du ,  Ting Luo

IPC: H02H7/085

CPC classification number: H02P29/02 ,  H02H7/085

Abstract: A motor overload protecting method includes (a) detecting an instantaneous motor current value in real-time, calculating a current integral value in each of a corresponding integral period, and resetting the current integral value to 0 at an end of the integral period, (b) obtaining an overload coefficient according to the current integral value, which is greater than or equal to 0 and less than 1 when the current integral value is greater than or equal to a maximum motor current value, and is equal to 1 when the current integral value is less than the maximum motor current value, wherein the maximum motor current value is a maximum current integral value when the motor is in a non-overload condition; and (c) multiplying the instantaneous motor current value by the overload coefficient to obtain a new input current value, and operating the motor according to the new input current value.

Abstract translation: 电动机过载保护方法包括：（a）实时检测瞬时电动机电流值，计算相应积分期间内的电流积分值，并在积分期结束时将电流积分值复位为0（ b）当电流积分值大于或等于最大电动机电流值时，根据当前积分值获得大于等于0且小于1的过载系数，当电流积分值等于1时 积分值小于最大电动机电流值，其中最大电动机电流值是当电动机处于非过载状态时的最大电流积分值; 和（c）将瞬时电动机电流值乘以过载系数以获得新的输入电流值，并根据新的输入电流值操作电动机。

公开(公告)号：US20120217919A1

公开(公告)日：2012-08-30

申请号：US13408445

申请日：2012-02-29

Applicant: Xiaohua TANG ,  Zhiyong DU ,  Yongzhuang ZHOU ,  Cong XIA ,  Lipin CHENG ,  Hui MA

Inventor： Xiaohua TANG ,  Zhiyong DU ,  Yongzhuang ZHOU ,  Cong XIA ,  Lipin CHENG ,  Hui MA

IPC: H02P23/00 ,  H02P3/00

CPC classification number: H02H7/09 ,  G01R31/026 ,  G01R31/343 ,  H02P29/0243

Abstract: An open phase detection system and method for a three-phase motor is provided. The open phase detection system comprises: a signal generating unit coupled to the three-phase motor and configured to generate a driving signal for driving the three-phase motor; a detecting unit coupled to the signal generating unit, and configured to detect whether the signal generating unit generates the driving signal and to detect three-phase current values of the three-phase motor; and a determining unit coupled to the detecting unit, and configured to determine whether the three-phase motor has open phase according to the three phase current values detected by the detecting unit when the driving signal is detected.

Abstract translation: 提供了一种用于三相电动机的开放相位检测系统和方法。 开放相位检测系统包括：信号发生单元，耦合到三相电动机并且被配置为产生用于驱动三相电动机的驱动信号; 检测单元，耦合到所述信号产生单元，并且被配置为检测所述信号产生单元是否产生所述驱动信号并检测所述三相电动机的三相电流值; 以及确定单元，其耦合到所述检测单元，并且被配置为根据在检测到所述驱动信号时由所述检测单元检测到的三相电流值来确定所述三相电动机是否具有断开相位。

公开(公告)号：US20100177451A1

公开(公告)日：2010-07-15

申请号：US12683623

申请日：2010-01-07

Applicant: Xiaohua Tang ,  Zhiyong Du ,  Ting Luo

Inventor： Xiaohua Tang ,  Zhiyong Du ,  Ting Luo

IPC: H02H7/08

CPC classification number: H02P29/02 ,  H02H7/085

Abstract: A motor overload protecting method includes (a) detecting an instantaneous motor current value in real-time, calculating a current integral value in each of a corresponding integral period, and resetting the current integral value to 0 at an end of the integral period, (b) obtaining an overload coefficient according to the current integral value, which is greater than or equal to 0 and less than 1 when the current integral value is greater than or equal to a maximum motor current value, and is equal to 1 when the current integral value is less than the maximum motor current value, wherein the maximum motor current value is a maximum current integral value when the motor is in a non-overload condition; and (c) multiplying the instantaneous motor current value by the overload coefficient to obtain a new input current value, and operating the motor according to the new input current value.

Abstract translation: 电动机过载保护方法包括：（a）实时检测瞬时电动机电流值，计算相应积分期间内的电流积分值，并在积分期结束时将电流积分值复位为0（ b）当电流积分值大于或等于最大电动机电流值时，根据当前积分值获得大于等于0且小于1的过载系数，当电流积分值等于1时 积分值小于最大电动机电流值，其中最大电动机电流值是当电动机处于非过载状态时的最大电流积分值; 和（c）将瞬时电动机电流值乘以过载系数以获得新的输入电流值，并根据新的输入电流值操作电动机。