STEP's new generation of EP/ET/EH intelligent flexible drivers has been launched for nearly a year, and the application features of its products have played an important role in many user sites. Starting today, we will introduce the firmware functions of the smart flexible driver in multiple phases, so that everyone can understand the new functions of the STEP driver.

As we all know, double carbon energy saving is one of the main directions of current industrial development. Customers are no longer satisfied with the application of traditional squirrel-cage three-phase asynchronous motors. Permanent magnet synchronous motors and synchronous reluctance motors with higher energy efficiency and higher control precision have become the first choice for many industries.

There are many problems when the original inverter directly controls the permanent magnet or reluctance motor. for example:

Therefore, the traditional inverter algorithm cannot control the operation of the synchronous motor well, and the synchronous motor is driven by the V/F control method, and the performance of the motor cannot be brought into play at all. STEP is a well-established elevator electric control complete set manufacturer. It has more than 20 years of experience in the application of synchronous motors in the elevator industry, and has long been familiar with it.

The parameters of the intelligent flexible drive in synchronous motor control fully reflect its product advantages. The reverse rotation of the synchronous motor is due to the fact that the permanent magnet is under the influence of the salient pole effect, because the magnetic pole position is uncertain, and the wrong current phase is input. Therefore, when starting up, the initial position of the magnetic pole must be estimated first, and the position of the magnetic pole should be detected.