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1. 发明授权

US08031446B2 Method of detecting output phase loss for motor driver 有权
标题翻译：检测电机驱动器输出相位损耗的方法
公开(公告)号：US08031446B2
公开(公告)日：2011-10-04
申请号：US12200073
申请日：2008-08-28
申请人： Ting-Chung Hsieh , Shih-Chieh Liao , Jen-Hsiang Huang , Lung-Jay Cheng
发明人： Ting-Chung Hsieh , Shih-Chieh Liao , Jen-Hsiang Huang , Lung-Jay Cheng
IPC分类号： H02H7/08 , H02H7/10
CPC分类号： H02H7/09
摘要： A method of detecting an output phase loss (OPHL) for a motor drive detects an abnormal OPHL operation when at least one phase of a three-phase current is continually zero. Each phase of the three-phase current is acquired, sampled, filtered, and compared. Hence, a corresponding zero-current counter value is continually added, and a corresponding abnormal current value is set as logic 1 when a zero-phase current of the three-phase current is continually zero. Finally, an OPHL certified value is set as logic 1 to confirm that the motor driver is operated in the abnormal OPHL operation. Therefore, a direct-current and an alternating-current OPHL can be detected before and after the motor driver is operated, respectively.
摘要翻译：当三相电流的至少一相连续为零时，检测电机驱动器的输出相位损耗（OPHL）的方法检测异常的OPHL操作。三相电流的每相被采集，采样，滤波和比较。因此，当三相电流的零相电流连续为零时，连续添加对应的零电流计数器值，并将相应的异常电流值设置为逻辑1。最后，将OPHL认证值设置为逻辑1，以确认电机驱动器在异常OPHL操作中运行。因此，可以分别在电动机驱动器操作之前和之后检测直流和交流的OPHL。

2. 发明申请

US20100052589A1 METHOD OF DETECTING OUTPUT PHASE LOSS FOR MOTOR DRIVER 有权
标题翻译：检测电机驱动器输出相位损失的方法
公开(公告)号：US20100052589A1
公开(公告)日：2010-03-04
申请号：US12200073
申请日：2008-08-28
申请人： Ting-Chung HSIEH , Shih-Chieh Liao , Jen-Hsiang Huang , Lung-Jay Cheng
发明人： Ting-Chung HSIEH , Shih-Chieh Liao , Jen-Hsiang Huang , Lung-Jay Cheng
IPC分类号： H02H7/122
CPC分类号： H02H7/09
摘要： A method of detecting an output phase loss (OPHL) for a motor drive detects an abnormal OPHL operation when at lease one phase of a three-phase current is continually zero. Each phase of the three-phase current is acquired, sampled, filtered, and compared. Hence, a corresponding zero-current counter value is continually added, and a corresponding abnormal current value is set as logic 1 when a zero-phase current of the three-phase current is continually zero. Finally, an OPHL certified value is set as logic 1 to confirm that the motor driver is operated in the abnormal OPHL operation. Therefore, a direct-current and an alternating-current OPHL can be detected before and after the motor driver is operated, respectively.
摘要翻译：检测电机驱动器的输出相位损耗（OPHL）的方法在三相电流的至少一相连续为零时检测异常OPHL运行。三相电流的每相被采集，采样，滤波和比较。因此，当三相电流的零相电流连续为零时，连续添加对应的零电流计数器值，并将相应的异常电流值设置为逻辑1。最后，将OPHL认证值设置为逻辑1，以确认电机驱动器在异常OPHL操作中运行。因此，可以分别在电动机驱动器操作之前和之后检测直流和交流的OPHL。

3. 发明授权

US08135529B2 Method for controlling constant-pressure fluid 有权
标题翻译：控制恒压流体的方法
公开(公告)号：US08135529B2
公开(公告)日：2012-03-13
申请号：US12235705
申请日：2008-09-23
申请人： Shih-Chieh Liao , Jen-Hsiang Huang
发明人： Shih-Chieh Liao , Jen-Hsiang Huang
IPC分类号： F04B49/00
CPC分类号： F04D15/0066
摘要： A method for controlling a constant-pressure fluid enables an inverter with a build-in controller to control rotation speed of a pump to achieve constant-pressure control thereof. In the control method, a pressure feedback value of output flow of the pump is measured and is compared with a pressure reference value to produce an error pressure value. Afterward, an operation condition of the pump, such as an abnormal handling condition, a deceleration standby handling condition, or an acceleration condition, is determined according to the pressure error value to shut down or re-start up the pump after a delay time. Hence, the control method can avoid frequently starting up or shutting down the inverter. Therefore, the power consumption and the operation cost are reduced. The use life of the pump prolongs and constant-pressure control for the pump can be implemented.
摘要翻译：用于控制恒压流体的方法使得具有内置控制器的逆变器能够控制泵的转速以实现其恒压控制。在控制方法中，测量泵的输出流量的压力反馈值，并将其与压力参考值进行比较以产生误差压力值。此后，根据压力误差值来确定泵的运转状态，例如异常处理条件，减速待机运转状态或加速条件，以在延迟时间之后关闭或重新启动泵。因此，控制方式可以避免频繁启动或关闭变频器。因此，功耗和运行成本降低。泵的使用寿命延长，可实现泵的恒压控制。

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