VisSim Case Studies

In this chapter three VisSim based industrial sensorless drive examples will be discussed which are ‘FAST’ prepared. This implies that the required voltage/current measurement structure has been put in place in these converters to allow sensorless operation using InstaSPIN technology. The aim is to show the reader the developmental steps needed to arrive at a fully operational drive. In all three cases the starting point is a given industrial drive concept, of which relevant circuit aspects will be shown as needed to achieve commissioning and subsequently, sensorless operation of either a permanent magnet or induction machine. It is hoped that the content of this chapter will assist the reader in making the transition from the laboratory examples given in the previous two chapters to his or her specific sensorless drive implementation. Each case consists of two subsections, which describe the commissioning and sensorless implementation process. These steps have been discussed in previous chapters (for different drives), hence only the key steps needed to achieve the desired tasks will be discussed. The reader should refer to the previous two chapters for a more in depth analysis of the topics discussed in this ‘case study’ chapter. Most importantly, the examples shown in this chapter underline specific topics, which go beyond the material presented in the previous chapters. Consequently, the solutions provided are tailored to the applications to be discussed.