Introduction of BLDC system and system used in sea vessels (Case study of fast boat, hadi 7 and 8)

Today, due to the increasing use of electric motors in the domestic, commercial and industrial sectors, for the optimal use of electrical energy, the design and manufacture of high -efficiency electric motors and variable speed actuators have received much attention. In the meantime, brushless DC motors (BLDC) due to many advantages such as high efficiency, high power density and torque, ease of control, simple construction method, high reliability and lower maintenance, in the last two decades in various applications Have been used. This motor is similar in structure to a permanent magnet synchronous motor, but is easily controllable with a DC motor. These features have made the use of these engines very popular in a wide range of applications. This article aims to help develop and promote the use of these motors in various industrial and semi-industrial applications, a review of various aspects of BLDC motors including features, modeling, inverters used and analysis of various control methods and finally to express the points Implements BLDC engine drive. Explains the advantages and disadvantages of different control methods of BLDC engine, and then introduces the model used in diesel generators of high-speed boats of the Ports and Maritime Organization.