Highly efficient power supplies & chargers
The power supply of the robot provides energy for all the robot actions. The big challenge in this area is that the robots have often many axes requiring multiple power supplies operating in parallel providing different voltages.
Next to supplying DC voltage for the commonly shared DC bus, rectifier stages have to generate different auxiliary supply voltages for controls, drives, brakes, and other components. Therefore the central rectifier power must exceed the nominal power consumption of all components in use.
The main difference between an AGV charger system and one for regular electric vehicles lies in the power classes used which is way smaller for AGVs and lies in the range of several kW.
The most general overview on a charger system can be seen in the block diagram below.
It consists of 3 main parts which are:
Please see following an extract of Infineon components for efficient compact power supplies and chargers as of today:
|Purpose||Technology / Product family||Product||Features / benefits|
|Isolated HV DC/DC stage Power Switches||CoolMOS™ CFD7 600 V||IPW60R055CFD7||
|PFC Power Switches||CoolMOS™ P7 600 V||
|CoolMOS™ C7 Gold 600 V||IPT60R125G7||
|PFC Gate Driver||EICEDriver™ 1EDI||
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