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1.发明公开公开(公告)号：US20240178777A1
公开(公告)日：2024-05-30
申请号：US18221869
申请日：2023-07-13
CPC分类号： H02P21/34 , H02P21/18 , H02K2213/03 , H02P2207/05
摘要： A method for pre-positioning a rotor of an outdoor fan in a counter-rotation state before operation includes: 1) during a counter-operation state, sending, by a microprocessor, a signal to the inverter circuit to turn off all upper electronic switching tubes and turn on all lower electronic switching tubes; 2) measuring a phase current of each phase coil winding in the stator assembly; 3) calculating a back electromotive force of each phase coil winding in the stator; 4) calculating a position angle of the rotor assembly; 5) checking if the phase current of each phase coil winding is all smaller than a preset threshold current; if not, return to 1); if yes, proceed to 6); and 6) calculating a resistance torque to stop the rotor assembly based on the position angle of the rotor assembly, and then stopping the rotor assembly to achieve pre-positioning of the rotor before starting.
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2.发明公开公开(公告)号：US20240056009A1
公开(公告)日：2024-02-15
申请号：US18382039
申请日：2023-10-19
发明人： Jinghao LAN , Wenqing BIAN
IPC分类号： H02P21/24 , H02P25/022 , H02P27/08 , H02P3/18
CPC分类号： H02P21/24 , H02P25/022 , H02P27/08 , H02P3/18
摘要： A method for controlling operation of a permanent-magnet synchronous motor includes: during operation of the permanent-magnet synchronous motor, receiving, by the permanent-magnet synchronous motor, a shutdown signal from an external device; uninterruptedly outputting, by a microcontroller unit (MCU), a deceleration pulse to an inverter, instead of directly blocking a PWM pulse to the inverter, and constantly monitoring a control signal sent by the external device; during a deceleration process, when the MCU receives a new startup signal and a real-time speed Vi of the permanent-magnet synchronous motor is greater than or equal to a reference speed Vref, controlling the permanent-magnet synchronous motor to rotate at a parameter approaching to a target torque T or a target speed V corresponding to the new startup signal; and blocking, by the MCU, the PWM pulse when the real-time speed Vi of the permanent-magnet synchronous motor is lower than the reference speed Vref.
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公开(公告)号：US11843337B2
公开(公告)日：2023-12-12
申请号：US17517658
申请日：2021-11-02
发明人： Ge Garrett James Hu , Wenqing Bian , Hairong Sun
CPC分类号： H02P27/08 , H02K5/225 , H02K11/33 , H04L12/40 , H02K2211/03 , H04L2012/40215
摘要： A combined motor controller, including: a first function module, including at least one power module powered by the mains supply to output a VDC power supply to power other modules; a second function module, including at least one motor control module including a microprocessor control unit (MCU) and an IGBT inverter; and a third function module, including at least one I/O module configured to transmit signals between a system main control board or a peripheral device and the motor control module. Each function module is provided with an independent metal or plastic shell and a first circuit board located in the shell, and the first function module, the second function module and the third function module are connected by mutually matched connectors for power supply or control signal transmission between the function modules.
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公开(公告)号：US11616242B2
公开(公告)日：2023-03-28
申请号：US17970640
申请日：2022-10-21
发明人： Jia Deng , Dongdong Wei , Tairong Zhu , Yongfu Zhao
IPC分类号： H01M8/04302 , H01M8/0432 , H01M8/04701 , H01M8/04746
摘要： A method for controlling a fuel cell that includes an electrochemical reactor; a cooling circuit; a controller; a coolant circuit; a first temperature sensor; and a second temperature sensor. The cooling circuit includes a cooling pipe and is configured to cool the electrochemical reactor; the controller is configured to control operations of the electrochemical reactor and the cooling circuit; the cooling pipe includes a first water inlet and a first water outlet; and the coolant circuit is connected to the first water inlet and the first water outlet. The method includes comparing the first temperature of the coolant at the first water inlet to the second temperature at the first water outlet; and controlling operations of the heater and the electrochemical reactor based on the comparison result.
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公开(公告)号：US20230043468A1
公开(公告)日：2023-02-09
申请号：US17970640
申请日：2022-10-21
发明人： Jia DENG , Dongdong WEI , Tairong ZHU , Yongfu ZHAO
IPC分类号： H01M8/04302 , H01M8/0432 , H01M8/04701 , H01M8/04746
摘要： A method for controlling a fuel cell that includes an electrochemical reactor; a cooling circuit; a controller; a coolant circuit; a first temperature sensor; and a second temperature sensor. The cooling circuit includes a cooling pipe and is configured to cool the electrochemical reactor; the controller is configured to control operations of the electrochemical reactor and the cooling circuit; the cooling pipe includes a first water inlet and a first water outlet; and the coolant circuit is connected to the first water inlet and the first water outlet. The method includes comparing the first temperature of the coolant at the first water inlet to the second temperature at the first water outlet; and controlling operations of the heater and the electrochemical reactor based on the comparison result.
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公开(公告)号：US20220213901A1
公开(公告)日：2022-07-07
申请号：US17518563
申请日：2021-11-03
发明人： Hongyu JIA , Huijun ZHAN , Shaner ZHANG , Xuanfeng WEN , Wei LEI
摘要： An air blower, including a volute, a centrifugal wind wheel, and a motor. The volute includes an end plate, a side plate extending from an edge of the end plate, and a cavity formed by the end plate and the side plate; the centrifugal wind wheel is disposed in the cavity; the end plate includes an air inlet, and two ends of the side plate are disposed side by side to form an air outlet; the end plate further includes a support beam opposite to the air inlet, and the motor is disposed on the support beam.
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公开(公告)号：US11371524B2
公开(公告)日：2022-06-28
申请号：US16903353
申请日：2020-06-16
发明人： Yanhu Lin , Miao Zhang , Wei Lei
摘要： A windmill, including a first end plate, a second end plate, and a plurality of primary blades disposed between the first end plate and the second end plate. The first end plate includes a central part provided with a base connected to a motor shaft. The second end plate includes a central part provided with an air inlet; the space between every two adjacent blades forms an air channel. The plurality of primary blades each includes an outmost end with respect to the central part of the first end plate, and the outmost end extends out of an outer edge of the second end plate. The connection line of every two adjacent outmost ends of the plurality of primary blades forms a circle, and the diameter D1 of the circle is larger than the diameter D2 of the second end plate.
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公开(公告)号：US11286946B2
公开(公告)日：2022-03-29
申请号：US16702496
申请日：2019-12-03
发明人： Hongbin Wang , Fengqi Wang
摘要： A wind wheel including a plurality of blades and a hub. The plurality of blades each includes an inner edge, an outer edge, a leading edge, and a trailing edge. In a top view of the orthographic projection of the wind wheel, the maximum distance between the center O of the hub and the outer edge of the plurality of blades refers to the outer diameter R; the distance between the center O and the cross point A1 of the inner edge and the leading edge is named R1; the outer edge is connected to the leading edge via an arc; the distance between the center O and a joint A2 of the arc and the leading edge is named R2; and the distances R1, R2, and the outer diameter R satisfy the following conditions: 0.35R≤R1≤0.45R; 0.8R≤R2≤0.9R.
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公开(公告)号：US20220060135A1
公开(公告)日：2022-02-24
申请号：US17517658
申请日：2021-11-02
发明人： Ge Garrett James HU , Wenqing BIAN , Hairong SUN
摘要： A combined motor controller, including: a first function module, including at least one power module powered by the mains supply to output a VDC power supply to power other modules; a second function module, including at least one motor control module including a microprocessor control unit (MCU) and an IGBT inverter; and a third function module, including at least one I/O module configured to transmit signals between a system main control board or a peripheral device and the motor control module. Each function module is provided with an independent metal or plastic shell and a first circuit board located in the shell, and the first function module, the second function module and the third function module are connected by mutually matched connectors for power supply or control signal transmission between the function modules.
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公开(公告)号：USRE48231E1
公开(公告)日：2020-09-29
申请号：US15385838
申请日：2016-12-20
发明人： Zheng Zhang , Jizhong Wang , Mingpan Pan , Yong Zhao , Yiqiao Zhou , Ronghua Bi
摘要： A blower system, including a permanent magnet motor and a wind wheel. The permanent magnet motor includes a stator assembly, a rotor assembly, and a motor controller. The rotor assembly includes a salient pole rotor including a rotor core and magnets embedded in the rotor core. The motor controller includes a microprocessor, a frequency inverter, and a sensor unit. The sensor unit inputs a phase current or phase currents, a phase voltage, and a DC bus voltage into the microprocessor. The microprocessor outputs a signal to control the frequency inverter which is connected to a winding of the stator assembly. The ratio between an air gap of the motor and the thickness of the magnets ranges from 0.03 to 0.065, and the ratio between the length of a pole arc and the length of the magnets ranges from 0.8 to 1.0.
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