Implementing V/F Control of Three-Phase Induction Motors without the Use of Digital Processors for Electric Propulsion Applications

A V/F control method is implemented in this paper without digital processors and only with electronic circuits. Three-phase induction motors are typically controlled using the V IF control method. Digital processors are sometimes viewed as a source of concern in some applications, such as ships, where security and reliability are of great importance. Several concerns have been raised concerning the potential for hang-ups due to poor environmental conditions, such as temperature and humidity, as well as the impact of a noise-free environment and the possibility of hacking. Accordingly, if electronic circuits for this equipment can be implemented without digital processors, the level of security and reliability in this sector will be dramatically enhanced. Specifically, the control unit of propulsion systems is the part of ships studied in this paper. Controlling the ship's engine speed and ensuring a safe start-up is the primary goal of this section. A digital processor is not used in this paper to achieve this goal. Through the PSIM software, simulations and results can be viewed. A simulation of the proposed circuit confirms its feasibility.