Zhongshan Broad-ocean Motor Co., Ltd.

Zhongshan Broad-ocean Motor Manufacturing Co., Ltd.

Hairong Sun

Xiaosan Xu

Yong Zhao

Zheng Zhang

Xiansheng Zhang

Jizhong Wang

Yiqiao Zhou

Yunsheng Chen

Wenqing Bian

Wei Lei

Hui Hu

Jianhui Li

Jipeng Wu

Pengyuan Chen

Ge Garrett James Hu

Jie Zhang

Gui Zhang

Chao Guan

A method for protecting a motor from overheating, includes: running a motor in a given parameter P and detecting a real-time temperature R of the motor; comparing the real-time temperature R with a plurality of set temperatures, the plurality of set temperatures including an overheating protection temperature Rm, shutdown temperature Rmax and recovery operation temperature Rmin, Rmin<Rm<Rmax; according to a comparison result, controlling the motor to operate at an initial current value I, or operate in a reduced current value with respect to the initial current value I, or stop running; and when the real-time temperature R meets the condition: Rm<R<Rmax, running the motor in an overheating protection mode, where the motor operates in a current value I lower than the initial current value I, and the current value I decreases with the increase of the real-time temperature R.

Method for protecting motor from overheating

A motor controller includes a housing, a power circuit board, and a control circuit board. The housing includes a first mounting platform, a second mounting platform, and a side wall. There is a height difference between the first mounting platform and the second mounting platform. The first mounting platform is disposed on an upper part of the side wall, and the second mounting platform is disposed on a middle part of the side wall. The second mounting platform is disposed on one side of the first mounting platform. The first mounting platform and the side wall form an upper chamber, and the control circuit board and the power circuit board are disposed in the upper chamber. The control circuit board is closer to the first mounting platform than the power circuit board. The second mounting platform and the side wall form a lower chamber communicating with the upper chamber.

Motor controller and outer rotor motor comprising the same

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.

Combined motor controller and combination method thereof

A motor controller includes a rectifier module, an inverter circuit, an energy storage capacitor C, a DC inductor L, a microprocessor, and a lightning protection and surge protection circuit. The rectifier module includes an output end connected to the energy storage capacitor Cto charge the energy storage capacitor C; two ends of the energy storage capacitor Care connected to the inverter circuit to supply power to the energy storage capacitor C. The DC inductor Lis in series connection between a positive output end A of the rectifier module and a positive end B of the energy storage capacitor C. The lightning protection and surge protection circuit is disposed between the rectifier module and the energy storage capacitor C. The lightning protection and surge protection circuit includes a differential mode protection circuit and a primary common mode protection circuit.

DC brushless motor controller comprising lightning protection and surge protection circuit

A method for outputting constant air volume by a fan system including at least two brushless DC (BLDC) motors, the method including: storing a constant air volume control function Q=F (n, C) in a data processor, where Q indicates an air volume, n indicates a rotational speed of the BLDC motors, and C indicates an operating parameter of the BLDC motors; transmitting, by the data processor, identical speed signal commands to the BLDC motors, and allowing the BLDC motors to operate at equal or approximately equal rotational speeds; and feedbacking, by the BLDC motors, motor operating parameters C to the data processor, calculating, by the data processor, a motor speed n for outputting and maintaining a constant air volume, and transmitting the motor speed to the BLDC motors.

Method for outputting constant air volume by multi-motor driving system

A method for measuring an air volume of a blower motor, including: a) establishing M constant air volume control functions Qi=F(n) corresponding to M air volume points CFMin a microprocessor of a motor controller; b) starting the motor, measuring a real-time rotational speed nand a parameter Qof the motor after the motor runs in a stable state, putting the parameter Qinto the functions Qi=F(n) to obtain multiple rotational speeds n, comparing the real-time rotational speed nwith the multiple rotational speeds ncorresponding to the multiple air volume points CFM, and determining a real-time detected air volume CFMwhich falls within two air volumes CFMand CFM; and c) calculating the real-time detected air volume CFMaccording to the two air volumes CFMand CFMand the rotational speeds nand nusing an interpolation method.

Method for measuring air volume of blower motor

A device for detecting blockage of an air filter mesh, including: an air inlet, an air outlet, an air duct, a fan or a wind wheel, a blower motor, an air filter mesh, and a controller. The controller includes a main control board including: a microprocessor, an inverter circuit, and a motor operation parameter detecting circuit. The air filter mesh is disposed in the air duct. The motor operation parameter detecting circuit inputs a real time operation parameter into the microprocessor, and the output terminal of the microprocessor controls the inverter circuit. A function module of the microprocessor calculates a detected air volume according to the real time operation parameter. When the detected air volume is smaller than a preset air volume, the microprocessor determines that the air filter mesh is obstructed and outputs a signal to an alarm circuit to trigger an alarm.

Device for detecting blockage of air filter mesh

A protection circuit for brushed DC motors connected between an AC power supply input and a rectifier circuit, including a power supply line, a power supply circuit, an AC detection circuit, a rectifier/filter voltage-stabilizing circuit, a microprocessor, a drive circuit, and a switching unit. The switching unit is connected to the power supply line in series. An input terminal of the power supply circuit is connected with the AC power supply input. The AC detection circuit receives current signals from the power supply line. The current signals are processed by the rectifier/filter voltage-stabilizing circuit and sent to the microprocessor. An output terminal of the microprocessor is connected to an input terminal of the drive circuit, and the drive circuit controls the switching unit to connect or disconnect the power supply circuit.

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Zhongshan, China

Hairong Sun