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公开(公告)号：US08222856B2
公开(公告)日：2012-07-17
申请号：US12666665
申请日：2008-06-24
IPC分类号： H02P1/46
CPC分类号： H02P6/182 , H02P1/465 , H02P6/26 , H02P27/024 , H02P2207/05
摘要： A control system for a motor, including a first detector providing signals indicative of the sign and zero-crossings of a supply voltage, and a second detector providing signals indicative of the sign and the zero-crossings of BEMF developed in the stator winding. A switch is driven to cause a first current pulse through the winding at a first delay relative to the zero-crossing of the supply voltage. The system checks if the BEMF has a first zero-crossing within a predetermined period of time preceding a third zero-crossing of the voltage, and if so, causes an opposite second current pulse through the winding with a second delay relative to the third zero-crossing of the supply. If not, the first current pulse is repeated, reducing or increasing the duration of the first delay if the first zero-crossing of the BEMF took place after or before the predetermined period of time.
摘要翻译： 一种用于电动机的控制系统，包括提供指示电源电压的符号和过零点的信号的第一检测器，以及提供指示在定子绕组中产生的BEMF的符号和过零点的信号的第二检测器。 驱动开关以相对于电源电压的过零点以第一延迟使第一电流脉冲通过绕组。 系统检查BEMF是否在电压的第三过零点之前的预定时间段内具有第一过零，如果是，则相对于第三零点以相对于第二延迟的相对的第二电流脉冲通过绕组 交货的供应。 如果不是，则如果BEMF的第一个过零点在预定时间段之后或之前发生，则重复第一电流脉冲，减少或增加第一延迟的持续时间。
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2.发明授权System for controlling the steady-state rotation of a synchronous electric motor 有权用于控制同步电动机的稳态旋转的系统公开(公告)号：US08183805B2
公开(公告)日：2012-05-22
申请号：US12666667
申请日：2008-06-23
CPC分类号： H02P25/04 , H02P1/465 , H02P6/26 , H02P27/024 , H02P2207/05
摘要： The control system comprises a switch (TR) in series with a stator winding (W) between two terminals (A, B) connected to an alternating supply voltage source (V), a first detector circuit (2) capable of providing a signal (Voi) indicating when the current (I) in that winding (W) is zero, a second detector circuit (1) capable of providing a signal (Vw) indicating the magnitude of the supply voltage (V), and a control unit (MC) connected to the first and second detection circuits (2; 1) and designed to control the switch (TR) in such a way as to cause an alternating current (I) of the same frequency as the supply voltage (V) and having alternating positive and negative phases (11, 12) to pass through the winding (W), separated by intervals during which it remains at zero, of a duration (tp) which varies according to an increasing function of the magnitude of the supply voltage (V).
摘要翻译： 控制系统包括与连接到交流电源电压（V）的两个端子（A，B）之间的定子绕组（W）串联的开关（TR），能够提供信号的第一检测器电路（2） Vo），指示该绕组（W）中的电流（I）何时为零，能够提供指示电源电压（V）的大小的信号（Vw）的第二检测器电路（1），以及控制单元 ）连接到第一和第二检测电路（2; 1）并且被设计成以这样的方式控制开关（TR），以便产生与电源电压（V）相同频率的交流电流（I）并具有交替 正和负相（11,12）通过绕组（W）的间隔，其间保持在零的间隔，持续时间（tp）根据电源电压幅度（V ）。
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公开(公告)号：US20100188037A1
公开(公告)日：2010-07-29
申请号：US12666665
申请日：2008-06-24
IPC分类号： H02P1/46
CPC分类号： H02P6/182 , H02P1/465 , H02P6/26 , H02P27/024 , H02P2207/05
摘要： The control system comprises: a switch (TR) in series with a winding (W) of the motor (M) between two terminals (A, B) which are connected to a supply of an alternating voltage (V), a first detector circuit (1) suitable for providing a signal (Vzc) indicative of the sign and of the zero-crossings of the alternating supply voltage (V), a second detector means (2, 3) suitable for providing signals indicative of the sign and of the zero-crossings of the BEMF which is developed in the stator winding (W), and a control unit (MC) arranged to bring about the starting of the rotation of the rotor (R), starting from an initial position (θ0), in accordance with a procedure comprising the steps of: a) driving the switch (TR) in a manner such as to bring about the passage through the winding (W) of a first current pulse (I1) which starts with a first delay (t1) relative to the immediately preceding zero-crossing of the supply voltage (V), b) checking if the BEMF (E) consequently developed in the winding (W) has a first zero-crossing within a predetermined period of time (T) which immediately precedes the third zero-crossing of the voltage (V) after the start of the first current pulse (I1), c) when the check provides a positive outcome, driving the switch (TR) in a manner such as to bring about the passage through the winding (W) of a second current pulse (I2) of opposite sign or direction to the first (I1), with a second predetermined delay (t2) relative to the third zero-crossing of the voltage (V), and then supplying to the winding (W) a voltage at the frequency of the supply, and d) when the check provides a negative outcome, repeating the procedure from the beginning starting from step a), reducing the duration of the first delay (t1) if the first zero-crossing of the BEMF (E) took place after the period of time (T) and increasing the duration of the first delay (t1) if the first zero-crossing of the BEMF (E) took place before the period of time (T).
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