Inverter module offers higher efficiency

Paul Boughton
Vincotech is releasing a new member of the Flowpim 1 product family, namely the P589-A31, which consists of an input rectifier and an inverter circuit to match the requirements of fast-switching motor drives. These are often seen in audible noise-sensitive environments, such as air conditioning, fans and pumps. A common feature of all these application areas is a switching frequency of >16kHz, which is above the audible range. Further application areas include highly dynamic motor drives such as servo drives.

Disadvantages of fast switching include the increased switching losses and therefore lower energy efficiency. In times of increasing energy costs and the growing importance of environmentally conscious behaviour, energy efficiency is becoming increasingly important. The new power module P589-A31, however, uses special semiconductors that have significantly lower switching losses compared to the standard components.

The new module features the 'phantom speed' IGBTs. These components have much lower switching losses at higher frequencies than standard IGBTs. For switching frequencies >8kHz, the 25A phantom speed chips are more efficient than 35A IGBT4 chips. At 20 kHz, the power loss is lower by 24 per cent, making an output power of 10kW possible, which could only be achieved using 50A to 75A standard IGBT4 components. Because the power losses are much lower, the heat sink can also be smaller. By choosing the P589-A31, the application will not only have much higher energy efficiency, but can also save component costs.

Vincotech's P589-A31 is part of the Flowpim 1 product family and is mechanically fully compatible with all other family members. This means the module is suitable for existing applications that use other Flowpim 1 products without the need for a mechanical redesign.

For more information, visit www.vincotech.com

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