Eaton Intelligent Power Limited

Johnson Electric International Ag

Xiaoyuan Hong

Kevin Lee

Hao Luo

Xiaojun Yan

Youqing Xiang

Qingliang Lang

Huabo Li

A connecting device for motor and supply network is provided, comprising: a Variable Frequency Drive (VFD), a first switch (S) and a second switch (S), wherein the Variable Frequency Drive (VFD) is connected in series to the first switch (S), and the second switch (S) is connected in parallel to the series circuit composed of the Variable Frequency Drive (VFD) and the first switch (S). The connecting device of the invention further comprises a bidirectional Silicon Controlled Rectifier (SCR) or two anti-parallel single-directional Silicon Controlled Rectifiers (SCR,SCR), wherein the bidirectional Silicon Controlled Rectifier (SCR) or the two anti-parallel single-directional Silicon Controlled Rectifiers (SCR,SCR) is/are connected in parallel to the second switch (S). The connecting device of the present invention would not be subject to high current surge when VFD bypassing, avoids the high cost for the overrating of the cable and the bypassing switch, and is easy to be implemented.

Connecting device for motor and supply network

An integrated electrical pump comprises a motor, an oil pump driven by the motor, and a pressure control system. The pressure control system controls a hydraulic pressure of the oil pump according to a motor speed of the motor, an oil temperature and a pressure command. An oil pressure control method of the integrated electrical pump is also provided.

Integrated electrical pump and oil pressure control method thereof

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Shenzhen, China

Xiaoyuan Hong