公开(公告)号：US06534938B1

公开(公告)日：2003-03-18

申请号：US09964757

申请日：2001-09-28

申请人： Zhigan Wu ,  Jin Wang ,  Jianping Ying

发明人： Zhigan Wu ,  Jin Wang ,  Jianping Ying

IPC分类号： H02P506

CPC分类号： H02P6/182

摘要： A control system operates with a PWM speed regulation of a sensorless BLDC motor with a plurality of windings. A hybrid method is present in the invention utilizing BEMF induced in stator windings to indicate the commutation instant and a falling edge detection method to override PWM chopping and commutation noises. The present invention achieves reliable sensorless rotor position detection with relative concise and low cost circuit as well as little software expense. The control device of the present invention includes a comparator for generating the BEMF zero crossing points (ZCP), and means for deriving rotor position information by detecting the falling edge (or rising edge for low-side chopping case) of the generated ZCPs.

摘要翻译： 控制系统利用具有多个绕组的无传感器BLDC电动机的PWM调速来操作。 本发明中存在利用定子绕组中引入的BEMF来指示换向时刻的混合方法和用于覆盖PWM斩波和换向噪声的下降沿检测方法。 本发明实现了可靠的无传感器转子位置检测，具有相对简洁和低成本的电路以及很少的软件费用。 本发明的控制装置包括用于产生BEMF过零点（ZCP）的比较器，以及用于通过检测所生成的ZCP的下降沿（或低侧斩波情况的上升沿）导出转子位置信息的装置。

公开(公告)号：US06781385B2

公开(公告)日：2004-08-24

申请号：US10137619

申请日：2002-05-02

申请人： Jianping Ying ,  Jin Wang ,  Zhigan Wu

发明人： Jianping Ying ,  Jin Wang ,  Zhigan Wu

IPC分类号： G01R3108

CPC分类号： G01R19/14

摘要： The invention relates to an apparatus and a method for detecting a current direction in a PWM converter or an inverter having one or more upper and lower arms, each of which consists of a switching device with an anti-parallel diode. The voltage across the switching device presents a different value and a polarity that depend on the direction of the current flowing through the switching device, wherein the current direction is acquired by sampling this voltage in the period of the trigger signal being on. In a case of small current, this sampled voltage value is relatively large to the flowing current magnitude and is easy to be distinguished. Furthermore, this invention presents a method for obtaining the phase angle between the load current and the output voltage, and judging whether the output current is zero or includes DC component. As a result, this method presents high precision.

摘要翻译： 本发明涉及一种用于检测PWM转换器或具有一个或多个上臂和下臂的逆变器的电流方向的装置和方法，每一个由具有反并联二极管的开关装置组成。 开关器件两端的电压呈现出不同的值和极性，这取决于流过开关器件的电流的方向，其中通过在触发信号导通的时段内对该电压进行采样来获取电流方向。 在小电流的情况下，该采样电压值对于流动电流大小相对较大并且易于区分。 此外，本发明提供了一种用于获得负载电流和输出电压之间的相位角的方法，并且判断输出电流是零还是包括直流分量。 因此，该方法具有高精度。

公开(公告)号：US06535402B1

公开(公告)日：2003-03-18

申请号：US10194677

申请日：2002-07-12

申请人： Jianping Ying ,  Zhigan Wu ,  Jin Wang

发明人： Jianping Ying ,  Zhigan Wu ,  Jin Wang

IPC分类号： H02M112

CPC分类号： H02M7/5387 ,  H02M2001/0009 ,  H02M2001/385

摘要： The invention relates to the compensation of dead time effect in electronic appliances such as inverters or converters having one or more legs with two complementary switches. The invented method mainly includes following steps providing an initial pulse width modulated (PWM) reference, providing a bias current and detecting the bias current crossing points, providing a dead time compensation signal which is adjusted responsive to the crossing points, and adding the dead time compensation signal to the PWM reference. Hence an adaptive compensation is accomplished independent of types of switching elements and load conditions. A high reliable circuit with low cost is further included as a preferred embodiment of bias current crossing points detection.

摘要翻译： 本发明涉及对诸如具有两个互补开关的一个或多个支脚的逆变器或转换器的电子设备中的死区时间效应的补偿。 本发明的方法主要包括以下步骤：提供初始脉冲宽度调制（PWM）参考，提供偏置电流和检测偏置电流交叉点，提供响应于交叉点调整的死区时间补偿信号，并增加死区时间 补偿信号到PWM参考。 因此，独立于开关元件和负载条件的类型实现自适应补偿。 作为偏置电流交叉点检测的优选实施例，还包括低成本的高可靠性电路。

公开(公告)号：US20050225272A1

公开(公告)日：2005-10-13

申请号：US10823214

申请日：2004-04-12

申请人： Zhigan Wu ,  Genfu Zhou ,  Jianping Ying

发明人： Zhigan Wu ,  Genfu Zhou ,  Jianping Ying

IPC分类号： H02P6/18 ,  H02P5/06

CPC分类号： H02P6/182

摘要： A circuit for controlling a brushless permanent magnet motor is provided. The circuit comprises windings, each of the windings having a first end connected at a common node and each of the windings having a second end connectable directly to supply voltages by switches, the second end connected to an upper supply voltage or connected to a lower supply voltage or disconnected from the supply voltages; blocking circuitry connectable with the second ends, the blocking circuitry producing a blocked voltage; a comparator receiving the blocked voltage on one input and a reference voltage on another input, the comparator result indicating polarity of a back emf voltage in the associated winding; and a latch providing control signals for the circuit, an input of the latch enabled by an enable signal, an output of the latch comprising a back emf voltage detection signal. The blocking circuitry and the comparator are duplicated for each of the windings.

摘要翻译： 提供一种用于控制无刷永磁电动机的电路。 电路包括绕组，每个绕组具有连接在公共节点处的第一端，并且每个绕组具有可直接连接的第二端，以便通过开关提供电压，第二端连接到较高电源电压或连接到较低电源 电压或与电源电压断开; 阻塞电路可与第二端连接，阻塞电路产生阻塞电压; 一个比较器，在一个输入端接收阻塞电压，在另一个输入上接收参考电压，比较器结果指示相关绕组中的反电动势电压的极性; 以及锁存器，其提供用于所述电路的控制信号，由使能信号使能的所述锁存器的输入，所述锁存器的输出包括反电动势电压检测信号。 对于每个绕组，阻塞电路和比较器被复制。

公开(公告)号：US07202623B2

公开(公告)日：2007-04-10

申请号：US10708876

申请日：2004-03-30

申请人： Genfu Zhou ,  Zhigan Wu ,  Jianping Ying

发明人： Genfu Zhou ,  Zhigan Wu ,  Jianping Ying

IPC分类号： H01K39/41

CPC分类号： H02P6/22

摘要： A method for starting-up a motor having multiple stator windings and a rotor contains first providing current to two of the windings to excite a predefined phase and allowing one of the windings floating, Then, the back electromotive force (BEMF) induced in the floating winding is monitored. If a zero crossing of BEMF occurs in the floating winding within the maximum startup time, then it commutates to the next phase, which is adjacent to the first initial phase in the predetermined sequence of excitation phases. If no zero crossing of BEMF occurs in the floating winding within the maximum startup time, then it commutates to the next phase, which is functionally shifted by two phase-intervals from the predefined phase.

摘要翻译： 用于启动具有多个定子绕组和转子的电动机的方法包括首先向两个绕组提供电流以激励预定相位并允许其中一个绕组浮动，然后，在浮动中引起的反电动势（BEMF） 绕组受到监控。 如果在最大启动时间内在浮动绕组中发生BEMF的零交叉，则它转换到与预定的励磁阶段序列中的第一初始相邻近的下一相。 如果在最大启动时间内在浮动绕组中没有发生BEMF过零，则它将转换到从预定义相位功能上移位两个相位间隔的下一相位。

公开(公告)号：US20060220602A1

公开(公告)日：2006-10-05

申请号：US11284018

申请日：2005-11-21

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P1/18

CPC分类号： H02P6/20 ,  H02P6/185 ,  H02P6/26

摘要： The methods for starting a Hall-less single-phase BLDCM having an asymmetrical air gap are proposed. The provided methods are employed to input a specific amount of current impulse and stop the current impulse at a specific time such that the rotor of the single-phase BLDCM having an asymmetrical air gap can be realized to rotate in the pre-determined direction through one of the cogging torque and the rotor inertia after that specific time so as to accomplish the normal starting of a motor without the Hall-effect sensor.

摘要翻译： 提出了启动具有不对称气隙的无霍尔单相BLDCM的方法。 所提供的方法用于输入特定量的电流脉冲并在特定时间停止电流脉冲，使得具有不对称气隙的单相BLDCM的转子可以实现为沿预定方向旋转通过一个 的齿槽转矩和转子惯性之间的差别，以便在没有霍尔效应传感器的情况下实现马达的正常启动。

公开(公告)号：US07345440B2

公开(公告)日：2008-03-18

申请号：US11284167

申请日：2005-11-21

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Qiong Yuan ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Qiong Yuan ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P1/00

CPC分类号： H02P6/22 ,  H02K29/03 ,  H02P1/46 ,  H02P1/465 ,  H02P6/182 ,  H02P6/185 ,  H02P6/26

摘要： A method for starting a motor having a stator, a rotor, a winding and an asymmetrical air gap is accomplished using several steps. The steps include: (a) providing the motor at standstill; (b) exciting the winding for a specific time period with a current impulse having a first amplitude to obtain a first specific position of the rotor with respect to the stator; (c) decreasing the first amplitude down to a second amplitude gradually by a controller to make the rotor to be positioned at a second specific position with respect to the stator after the specific time period, wherein the second amplitude is one of zero ampere and a specific value close to zero ampere, and the rotor is rotating close to the second specific position with an almost zero rotating speed when the second amplitude is reached.

摘要翻译： 用于启动具有定子，转子，绕组和不对称气隙的电动机的方法通过几个步骤完成。 步骤包括：（a）停止提供电机; （b）用具有第一幅度的电流脉冲激励所述绕组达特定时间段以获得所述转子相对于所述定子的第一特定位置; （c）通过控制器逐渐将第一振幅降低到第二幅度，使得转子在特定时间段之后相对于定子定位在第二特定位置，其中第二幅度是零安培和 特定值接近零安培，并且当达到第二幅度时，转子以几乎为零的转速旋转接近第二特定位置。

公开(公告)号：US07242160B2

公开(公告)日：2007-07-10

申请号：US11284018

申请日：2005-11-21

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Lijian Wu ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02K21/00

CPC分类号： H02P6/20 ,  H02P6/185 ,  H02P6/26

摘要： The methods for starting a Hall-less single-phase BLDCM having an asymmetrical air gap are proposed. The provided methods are employed to input a specific amount of current impulse and stop the current impulse at a specific time such that the rotor of the single-phase BLDCM having an asymmetrical air gap can be realized to rotate in the pre-determined direction through one of the cogging torque and the rotor inertia after that specific time so as to accomplish the normal starting of a motor without the Hall-effect sensor.

摘要翻译： 提出了启动具有不对称气隙的无霍尔单相BLDCM的方法。 所提供的方法用于输入特定量的电流脉冲并在特定时间停止电流脉冲，使得具有不对称气隙的单相BLDCM的转子可以实现为沿预定方向旋转通过一个 的齿槽转矩和转子惯性之间的差别，以便在没有霍尔效应传感器的情况下实现马达的正常启动。

公开(公告)号：US20060214611A1

公开(公告)日：2006-09-28

申请号：US11328975

申请日：2006-01-10

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P7/06

CPC分类号： H02P6/182

摘要： The method and circuit for controlling a sensorless single-phase BLDCM having a stator with a winding are proposed. The provided controlling circuit includes a power supply circuit, an inverter coupled to the winding and the power supply circuit, a BEMF detecting circuit coupled to the winding and the inverter and measuring a BEMF of the winding, and a controller coupled to the power supply circuit, the inverter and the BEMF detecting circuit and analyzing a status of the BEMF to control the BLDCM accordingly. The provided method is based on the motor winding time-sharing theory, and the controller controls the inverter to make the winding used as a driving element with loading current when the absolute value of the BEMF is relatively large and as a sensing element when the absolute value of the BEMF is relatively small.

摘要翻译： 提出了一种用于控制具有带绕组的定子的无传感器单相BLDCM的方法和电路。 所提供的控制电路包括电源电路，耦合到绕组和电源电路的反相器，耦合到绕组和逆变器并测量绕组的BEMF的BEMF检测电路，以及耦合到电源电路的控制器 ，逆变器和BEMF检测电路，并分析BEMF的状态以相应地控制BLDCM。 所提供的方法是基于电机绕组分时理论，控制器控制逆变器使绕组用作具有负载电流的驱动元件，当BEMF的绝对值相对较大时，作为传感元件，当绝对值 BEMF的价值相对较小。

公开(公告)号：US07459878B2

公开(公告)日：2008-12-02

申请号：US11328975

申请日：2006-01-10

申请人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

发明人： Weizi Wang ,  Zhigan Wu ,  Wanbing Jin ,  Jianping Ying ,  Shih-Ming Huang ,  Wen-Shi Huang

IPC分类号： H02P23/00

CPC分类号： H02P6/182

摘要： The method and circuit for controlling a sensorless single-phase BLDCM having a stator with a winding are proposed. The provided controlling circuit includes a power supply circuit, an inverter coupled to the winding and the power supply circuit, a BEMF detecting circuit coupled to the winding and the inverter and measuring a BEMF of the winding, and a controller coupled to the power supply circuit, the inverter and the BEMF detecting circuit and analyzing a status of the BEMF to control the BLDCM accordingly. The provided method is based on the motor winding time-sharing theory, and the controller controls the inverter to make the winding used as a driving element with loading current when the absolute value of the BEMF is relatively large and as a sensing element when the absolute value of the BEMF is relatively small.

摘要翻译： 提出了一种用于控制具有带绕组的定子的无传感器单相BLDCM的方法和电路。 所提供的控制电路包括电源电路，耦合到绕组和电源电路的反相器，耦合到绕组和逆变器并测量绕组的BEMF的BEMF检测电路，以及耦合到电源电路的控制器 ，逆变器和BEMF检测电路，并分析BEMF的状态以相应地控制BLDCM。 所提供的方法是基于电机绕组分时理论，控制器控制逆变器使绕组用作具有负载电流的驱动元件，当BEMF的绝对值相对较大时，作为传感元件，当绝对值 BEMF的价值相对较小。