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[CN 201610400591.0] Drive system of mechanical press
[CN 201610400591.0] Title of Drive System of a Mechanical Press: Application Number of Drive System of a Mechanical Press: CN 201610400591.0 Applicant: Nanjing Eston Automation Co., Ltd. Application Date: 2016-6-8 Patent Type: Application for Invention The present invention discloses a drive system of a mechanical press. The power supply unit of electrical external power supply equipment is connected to a three-phase input reactor after passing through a pressure protection device, the output end of the three-phase input reactor is connected with the input end of the active network side module, and the active network side module converts the input alternating current into the direct current required by the system and transmits it to the energy storage device. The output end of the energy storage device is connected with the input end of the motor drive device and provides energy for it. The motor drive device realizes precision closed-loop control of the direct drive motor according to the pulse signal provided by the upper computer. The system of the invention, using the active network side module as the network side interface of the drive system, can limit the power of the drive equipment from the front-end power grid, avoid the network side peak current caused by motor overload, and reduce the front-end network side capacity of the drive equipment. It can reliably guarantee the minimum working voltage amplitude of the bus, ensure that the motor works at the required working point, and then ensure the stability of the performance of the press equipment.
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