Application of FGI frequency converter on biological fermenters

1.Overview

Biological fermentation in the early stage of the production process of fermentation tank mostly use constant speed mixer stirring liquid, production characteristics and reference production bacteria oxygen consumption in different metabolic stages of the highest speed set, but the different stages in the fermentation process of the oxygen consumption is not constant, because the constant turn stirring has certain energy waste. Therefore, the frequency conversion control method can realize the speed regulation pr  ocess, reduce the electric energy, reduce the impact, and extend the life span.

2.Implementation plans

This paper explains the 380V / 250KW permanent magnet synchronous motor of large domestic pharmaceutical companies, using the permanent magnet motor direct drive mixing system, cancel the reducer device, simple structure, small volume, lower loss, simple and convenient maintenance and installation.

According to the system scheme of the inverter demand, choose new scenery FD 300 series a new generation of high performance vector inverter, in order to cope with the complex grid environment, add input and output reactor, through high performance permanent magnet synchronous motor control algorithm, solve the problem of the reversal of the starting process of shaft, at the same time realize stepless speed regulation, improve production process.

3.Application advantage

The pharmaceutical mixing project, the new scenery provides FD 300 high performance vector inverter can fully meet the requirements of frequency speed control load control system, ensure reliable and efficient operation of biological pharmaceutical equipment, marks the new scenery company practice national "carbon peak carbon neutral" strategy, promote the localization of Chinese intelligent manufacturing alternative process, realize the product technology innovation, market development.

1) The frequency conversion speed regulation increases the controllability of process and quality, and has good research value for the pharmacology and quality regulation of drug manufacturing;

2) The soft start function of the frequency converter will make the start current start from zero, and the maximum value will not exceed the rated current, which reduces the impact on the power grid and the requirements for power supply capacity.

3) Reduce the mechanical shock and vibration, greatly reduce the mechanical damage and wear caused by the mechanical shock and vibration, but also reduce the maintenance workload and maintenance cost of the equipment, and prolong the service life of the equipment.

4) Make the stirring and fermentation process flexible and master, and promote the research of the pharmaceutical process.