Zhongshan Broad-Ocean Motor Co., Ltd.

Xiaosan Xu

Hairong Sun

Yunsheng Chen

Wei Lei

Jianhui Li

Chao Guan

Pengyuan Chen

Jie Zhang

Gui Zhang

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 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

Growing community of inventors

Zhongshan, China

Xiaosan Xu