ABB UDK-04-109 DC link module

ABB UDK-04-109 DC link module

The main circuit of the UDK-04-109 consists of a rectifier, a DC link and an inverter. The rectifier (input bridge) converts the alternating current and voltage to direct current and voltage for the DC link. The DC capacitors in the DC link smooth the ripple and form a steady energy and power supply for the inverter. The inverter converts the intermediate circuit DC power to AC power for the motor. From a common DC system point of view, the motor has two main operation modes: the motoring mode and the generating mode. In the motoring mode, the motor rotates the machinery. 

The energy flows from the AC power line to the motor through the rectifier, DC link and the inverter. In the generating mode, the machinery rotates the motor. This is the case for example when a hoist motor of a crane lowers a load (overhauling load). To keep the rotation speed steady, the motor brakes. During the braking, the motor generates energy back to the inverter which then conveys the energy further to the DC link. 

In the generating mode the DC capacitors are charged by the inverters and the DC link voltage starts to rise. To prevent an excessive voltage rise, the drive must convey the surplus energy away from the DC link. There are three options: to convey the energy to the AC power line, to a brake resistor or to another drive. For the first option you need to have a special type of drive in use, a regenerative drive. If you have an ordinary drive with a rectifier (diode input bridge), regeneration is not possible so only the two other options remain. If you connect a brake chopper and resistor to the DC link, you can dissipate the energy in the resistor as heat. If you connect the DC link of the drive to another drive, you can use the surplus energy for charging the DC capacitors of the other drive and use the energy to rotate its motor. This is a common DC system.

The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

• Contact: manager ye

• E-mail: xiamen2018@foxmail.com

• Company: Rui Chang Ming sheng automation equipment co., LTD

• Telephone: +86 15270269218

Reproduced please attach this link: http://www.stockdcs.com/  

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