Drives
PowerFlex Common Bus
Overview
An increasing number of drive systems in a wide range of industrial applications and power ranges are being configured today in a common DC bus configuration. This drive system configuration provides users with significant advantages such as; design flexibility, higher efficiency, and cost savings.
A common rectifier can supply power to the DC bus for all the DC-AC inverters instead of individual rectifiers in the stand-alone AC drives.
The power sharing on the DC bus is possible for applications where some inverters may be motoring while others in the same process may be simultaneously generating power. The power generating inverters feed power through the DC bus to the motoring inverters. This results in less power usage from the rectifier unit. Therefore, upstream distribution equipment can be application rated since power is shared on the DC bus instead of the AC line (i.e. smaller transformers).
Cost savings are realized through the use of application rated system components such as reactors, braking units, contactors, etc. This reduces the number of parts used on the drive system as well as assembly, wiring, wiring costs, number of failures and spare parts.
PowerFlex® Common Bus products provide a wide range of modular solutions for the common DC bus application. Refer to Reference Materials for product details.
Non-Regenerative Bus Supplies
- PowerFlex® 20T Bus Supply for Common DC Bus Applications
- PowerFlex® 20S Bus Supply for Common DC Bus Applications