摘要：【中文】本发明公开了一种滚动轴承和电机，所述滚动轴承包括轴承内圈(52)、轴承外圈(51)以及设置在所述轴承外圈(51)与所述轴承内圈(52)之间的保持架(54)，该保持架(54)上保持有滚动件(53)以使得所述轴承内圈(52)能够相对所述轴承外圈(51)转动，所述保持架(54)包括至少两段沿周向方向布置的保持架分部(541)，各段所述保持架分部(541)分别形成为一体并沿所述周向方向拼接成环绕所述轴承内圈(52)的所述保持架(54)。本发明的滚动轴承能够有效地减少微动磨损导致的轴承异音。 【EN】The invention discloses a rolling bearing and a motor, wherein the rolling bearing comprises a bearing inner ring (52), a bearing outer ring (51) and a retainer (54) arranged between the bearing outer ring (51) and the bearing inner ring (52), rolling elements (53) are retained on the retainer (54) so that the bearing inner ring (52) can rotate relative to the bearing outer ring (51), the retainer (54) comprises at least two retainer sections (541) arranged along the circumferential direction, and the retainer sections (541) are respectively formed into a whole and spliced into the retainer (54) surrounding the bearing inner ring (52) along the circumferential direction. The rolling bearing can effectively reduce the abnormal sound of the bearing caused by fretting wear.

摘要：【中文】本发明涉及电器设备领域，公开了一种永磁电机，包括：转子，转子包括永磁体保持架和安装于永磁体保持架的永磁体，永磁体保持架包括主体，永磁体包括第一永磁体和第二永磁体，多个第一永磁体沿主体的周向设置，至少一个第二永磁体沿轴向方向设置在至少一个第一永磁体的至少一侧并与所述至少一个第一永磁体沿轴向方向一一对应；定子铁芯，定子铁芯包括定子轭部和多个定子齿部，多个定子齿部沿环状的定子轭部的周向间隔设置，至少一个定子齿部包括与第一永磁体间隔地对应的第一表面和与第二永磁体间隔地对应的第二表面；沿轴向方向对应的第一永磁体和第二永磁体的极性相同。本发明的永磁电机可以增加从轴向进入定子齿部的磁通，从而增加磁通总量。 【EN】The invention relates to the field of electrical equipment, and discloses a permanent magnet motor, which comprises: the rotor comprises a permanent magnet retainer and permanent magnets arranged on the permanent magnet retainer, the permanent magnet retainer comprises a main body, the permanent magnets comprise first permanent magnets and second permanent magnets, the first permanent magnets are arranged along the circumferential direction of the main body, and at least one second permanent magnet is arranged on at least one side of at least one first permanent magnet along the axial direction and corresponds to the first permanent magnets one by one along the axial direction; the stator core comprises a stator yoke part and a plurality of stator teeth, the plurality of stator teeth are arranged at intervals along the circumferential direction of the annular stator yoke part, and at least one stator tooth comprises a first surface corresponding to the first permanent magnet at intervals and a second surface corresponding to the second permanent magnet at intervals; the polarities of the first permanent magnet and the second permanent magnet which correspond to each other along the axial direction are the same. The permanent magnet motor of the invention can increase the magnetic flux entering the stator tooth part from the axial direction, thereby increasing the total magnetic flux.

摘要：【中文】本发明涉及电器设备领域，公开了一种永磁电机，其中，永磁电机包括：定子铁芯，定子铁芯包括定子轭部和多个定子齿部，多个定子齿部沿环状的定子轭部的周向间隔设置；转子，转子包括永磁体保持架和安装于永磁体保持架的多个永磁体，永磁体保持架包括沿转子的轴向方向延伸的回转体形状的主体，多个永磁体沿主体的周向间隔设置，每个永磁体具有朝向定子齿部的侧面，至少一个永磁体的侧面具有与定子齿部的轴向端部间隔地对应的部分，部分为朝向永磁体的端部渐变的锥面或朝向永磁体的端部偏离轴向方向弯曲的曲面。本发明可以通过锥面或曲面向定子齿部提供具有沿永磁电机的轴向方向的分量的磁通，从而增加进入定子齿部的磁通总量。 【EN】The invention relates to the field of electrical equipment and discloses a permanent magnet motor, wherein the permanent magnet motor comprises: the stator core comprises a stator yoke part and a plurality of stator teeth parts, and the plurality of stator teeth parts are arranged at intervals along the circumferential direction of the annular stator yoke part; the rotor comprises a permanent magnet retainer and a plurality of permanent magnets arranged on the permanent magnet retainer, the permanent magnet retainer comprises a body in the shape of a revolving body extending along the axial direction of the rotor, the permanent magnets are arranged at intervals along the circumferential direction of the body, each permanent magnet is provided with a side surface facing a stator tooth part, the side surface of at least one permanent magnet is provided with a part corresponding to the axial end part of the stator tooth part at intervals, and the part is a conical surface gradually changed towards the end part of the permanent magnet or a curved surface bent towards the end part of the permanent magnet deviating from the axial direction. The present invention can provide magnetic flux having a component in the axial direction of the permanent magnet motor to the stator teeth through the tapered surface or the curved surface, thereby increasing the total amount of magnetic flux entering the stator teeth.

摘要：【中文】本发明公开了一种永磁同步电机的堵转检测方法、堵转检测装置和控制系统，所述堵转检测方法包括以下步骤：获取永磁同步电机的相电压和相电流；根据相电压和相电流，判断永磁同步电机是否发生堵转。本发明实施例的堵转检测方法，弥补了相关技术的不足，且可以实现转矩电流控制模式或者速度控制模式下的堵转检测，实用性强，并且安全可靠性高。 【EN】The invention discloses a locked rotor detection method, a locked rotor detection device and a control system of a permanent magnet synchronous motor, wherein the locked rotor detection method comprises the following steps: acquiring phase voltage and phase current of the permanent magnet synchronous motor; and judging whether the permanent magnet synchronous motor is locked according to the phase voltage and the phase current. The locked rotor detection method disclosed by the embodiment of the invention makes up the defects of the related technology, can realize locked rotor detection in a torque current control mode or a speed control mode, and has strong practicability and high safety and reliability.

摘要：【中文】本发明公开了一种永磁同步电机的堵转检测方法、堵转检测装置和控制系统，所述堵转检测方法包括以下步骤：获取永磁同步电机的相电压和相电流；根据相电压或相电流，计算得到定子的热功率；根据热功率，判断永磁同步电机是否发生堵转。本发明实施例的堵转检测方法，弥补了相关技术的不足，且可以实现转矩电流控制模式或者速度控制模式下的堵转检测，实用性强，并且安全可靠性高。 【EN】The invention discloses a locked rotor detection method, a locked rotor detection device and a control system of a permanent magnet synchronous motor, wherein the locked rotor detection method comprises the following steps: acquiring phase voltage and phase current of the permanent magnet synchronous motor; calculating the thermal power of the stator according to the phase voltage or the phase current; and judging whether the PMSM is locked rotor or not according to the thermal power. The locked rotor detection method disclosed by the embodiment of the invention makes up the defects of the related technology, can realize locked rotor detection in a torque current control mode or a speed control mode, and has strong practicability and high safety and reliability.

摘要：【中文】本发明提出了一种永磁同步电机的掉电保护控制方法、装置及系统，该永磁同步电机的掉电保护控制方法包括：检测直流母线模块的电压值；根据电压值，判断永磁同步电机是否掉电；若是，则控制永磁同步电机进入发电状态。本发明的永磁同步电机的掉电保护控制方法、装置及系统，当永磁同步电机掉电时，控制永磁同步电机进入发电状态，可使永磁同步电机瞬间产生的反电动势在直流母线模块中形成的电压低于安全电压，避免因电压过高导致的元器件损坏。 【EN】The invention provides a power-down protection control method, a device and a system of a permanent magnet synchronous motor, wherein the power-down protection control method of the permanent magnet synchronous motor comprises the following steps: detecting a voltage value of the direct current bus module; judging whether the permanent magnet synchronous motor is powered off or not according to the voltage value; and if so, controlling the permanent magnet synchronous motor to enter a power generation state. According to the power-down protection control method, device and system for the permanent magnet synchronous motor, when the permanent magnet synchronous motor is powered down, the permanent magnet synchronous motor is controlled to enter a power generation state, so that the voltage formed by counter electromotive force instantaneously generated by the permanent magnet synchronous motor in a direct current bus module is lower than safe voltage, and component damage caused by overhigh voltage is avoided.

摘要：【中文】本发明提出了一种确定永磁同步电机转子角度位置的方法、装置及永磁同步电机。永磁同步电机设置有多个霍尔位置传感器，以及设置有极对数为永磁同步电机的极对数的二倍的霍尔磁环，霍尔位置传感器用于输出霍尔位置信号，方法包括：在永磁同步电机上电且处于停止状态时，获取霍尔位置信号电平，根据霍尔位置信号电平确定初始霍尔角度位置以及初始扇区值；在初始霍尔角度位置的q轴方向加入电流以使永磁同步电机旋转，并记录扇区变化；根据扇区变化值，确定永磁同步电机的旋转方向以及霍尔位置标志位；根据霍尔位置标志位和初始霍尔角度位置，确定永磁同步电机的转子角度位置。 【EN】The invention provides a method and a device for determining the angle position of a rotor of a permanent magnet synchronous motor and the permanent magnet synchronous motor. The permanent magnet synchronous motor is provided with a plurality of Hall position sensors and a Hall magnetic ring with the number of pole pairs being twice that of the permanent magnet synchronous motor, the Hall position sensors are used for outputting Hall position signals, and the method comprises the following steps: when the permanent magnet synchronous motor is powered on and is in a stop state, acquiring a Hall position signal level, and determining an initial Hall angle position and an initial sector value according to the Hall position signal level; adding current in the q-axis direction of the initial Hall angle position to enable the permanent magnet synchronous motor to rotate, and recording the change of a sector; determining the rotation direction of the permanent magnet synchronous motor and a Hall position zone bit according to the sector change value; and determining the rotor angle position of the permanent magnet synchronous motor according to the Hall position mark bit and the initial Hall angle position.

摘要：【中文】本发明提出了一种确定永磁同步电机转子角度位置的方法、装置及永磁同步电机。电机设置有极对数为电机的极对数的二倍的霍尔磁环，方法包括：在永磁同步电机上电且处于停止状态时，获取霍尔位置信号电平，根据霍尔位置信号电平确定初始霍尔角度位置以及初始扇区值；在初始霍尔角度位置的q轴方向加入电流，判断初始扇区值是否发生变化；当发生变化时，记录扇区变化值，并根据扇区变化值确定永磁同步电机的旋转方向以及霍尔位置标志位；当未发生变化时，在初始霍尔角度位置分别加入正电压脉冲和负电压脉冲，获取并比较正电流峰值和负电流峰值，以确定霍尔位置标志位；根据霍尔位置标志位和初始霍尔角度位置，确定永磁同步电机的转子角度位置。 【EN】The invention provides a method and a device for determining the angle position of a rotor of a permanent magnet synchronous motor and the permanent magnet synchronous motor. The motor is provided with a Hall magnetic ring with the number of pole pairs being twice that of the motor, and the method comprises the following steps: when the permanent magnet synchronous motor is powered on and is in a stop state, acquiring a Hall position signal level, and determining an initial Hall angle position and an initial sector value according to the Hall position signal level; adding current in the q-axis direction of the initial Hall angle position, and judging whether the initial sector value changes or not; when the change occurs, recording a sector change value, and determining the rotation direction of the permanent magnet synchronous motor and the Hall position zone bit according to the sector change value; when the Hall position marker bit is not changed, respectively adding a positive voltage pulse and a negative voltage pulse at the initial Hall angle position, and acquiring and comparing a positive current peak value and a negative current peak value to determine the Hall position marker bit; and determining the rotor angle position of the permanent magnet synchronous motor according to the Hall position mark bit and the initial Hall angle position.

摘要：【中文】本发明提供了一种用于永磁同步电机控制系统的掉电保护控制方法、控制模块、计算机可读存储介质以及永磁同步电机控制系统。其中，掉电保护控制方法包括：实时统计直流母线模块的电压值；根据电压值判断是否掉电；当判定掉电时，进入恒压制动模式，以控制永磁同步电机按预设加速度减速制动以令电压值小于等于第一预设电压值。本发明提供的掉电保护控制方法，通过恒压制动控制永磁同步电机按预设加速度减速制动，可缓解永磁同步电机的减速速度，使得永磁同步电机瞬间产生的反电动势在直流母线模块形成的电压低于安全电压，避免因为掉电致使永磁同步电机产生的反电动势在直流母线模块形成较高电压，造成元器件损坏。 【EN】The invention provides a power failure protection control method for a permanent magnet synchronous motor control system, a control module, a computer readable storage medium and the permanent magnet synchronous motor control system. The power failure protection control method comprises the following steps: counting the voltage value of the direct current bus module in real time; judging whether power is lost or not according to the voltage value; and when power failure is judged, entering a constant voltage braking mode to control the permanent magnet synchronous motor to decelerate and brake according to a preset acceleration so as to enable the voltage value to be smaller than or equal to a first preset voltage value. According to the power failure protection control method provided by the invention, the permanent magnet synchronous motor is controlled to decelerate and brake according to the preset acceleration through constant-voltage braking, so that the deceleration speed of the permanent magnet synchronous motor can be relieved, the voltage formed by the counter electromotive force instantaneously generated by the permanent magnet synchronous motor in the direct current bus module is lower than the safe voltage, and the damage of components caused by the fact that the counter electromotive force generated by the permanent magnet synchronous motor forms higher voltage in the direct current bus module due to power failure is avoided.

摘要：【中文】本发明提供了一种堵转检测方法、堵转检测装置、计算机可读存储介质及电机驱动装置，其中，堵转检测方法包括：实时获取电机的输入功率；计算输入功率的波动值；比较波动值和波动阈值，当波动值在预设时长内持续小于波动阈值时，判定电机发生堵转。本发明提供的堵转检测方法，尤其适用于无位置传感器的交流电机，通过监测不受位置角影响的输入功率的波动值，可准确检测电机是否发生了堵转，该方案在对电机的转矩电流控制模式或者速度控制模式中均可应用，弥补了现有技术的不足，实用性强，并且安全可靠性高。 【EN】The invention provides a locked rotor detection method, a locked rotor detection device, a computer readable storage medium and a motor driving device, wherein the locked rotor detection method comprises the following steps: acquiring the input power of a motor in real time; calculating a fluctuation value of the input power; and comparing the fluctuation value with a fluctuation threshold value, and judging that the motor is locked when the fluctuation value is continuously smaller than the fluctuation threshold value within a preset time length. The locked rotor detection method provided by the invention is particularly suitable for an alternating current motor without a position sensor, and can accurately detect whether the motor is locked rotor or not by monitoring the fluctuation value of the input power which is not influenced by the position angle.