Drive technology - the dispatcher of the intermediate circuit, power modules

Are you interested in drive technology and technology — power drives and modules from the supplier company AvecGlob? Here you will find interesting information on this topic

Essence and problems

Drive technology and technology refers to the field of development, design and maintenance of various drives, mainly electrical. There are two main applications in which electric motors are used. The first application is where the motors are connected to the mains and operate at a fixed rotor speed. The second is a wide application, when the engines have to work at different speeds and different torques.

This application requires that the power conversion unit be located between the power supply and the motor. Such a unit is called a frequency converter.

The final application determines whether the motor should be controlled by a converter or only from a network with a fixed AC frequency.

Examples of applications with a fixed frequency grid are pumps or fans that move the medium without having to adjust the speed of the medium. Some of the conveyor systems used in the mining industry also apply here.

In some applications, the medium must travel at different speeds or the pressure of the medium must be adjusted. Some of these parameters can adjust valves, dampers or gears, but such regulation is not of high quality. A motor with a fixed frequency network always provides full power in this case, and a significant portion of the power is converted into heat.

Therefore, in many applications, most of the power is lost, such engines do not work at the optimum speed and torque, which is determined by the load or the work.

The supplier — the company AvekGlob — offers at affordable prices services associated with the introduction of drive technologies and power modules designed for circular dispatching.

Methods of implementing drive technologies

Frequency-adjustable drives are used to overcome power losses. With these power conversion devices, the speed and torque of the engine can be adjusted over a wide range to suit the needs of different applications. The most important two parameters from a technical point of view are the frequency of the voltage, which determines the motor speed and the current maintained, which leads to a given torque of the motor. Energy and cost savings are the main reasons for increasing the popularity of frequency converters, which are usually characterized by short payback periods.

The sequence of operation of the power module:

inversion of DC to AC with obtaining a modulated voltage;

start and subsequent control of the engine by means of a corresponding change in frequency, current and voltage;

controlled stop or deceleration of the engine;

The main components of the drive technology system are the power rectifier diodes used to correct the AC input voltage and the brake chopper that is used to dissipate the regenerated energy from the motor during braking and protects the DC capacitor from damage. This also includes power semiconductor switches used to convert the rectified input voltage back to the regulated AC voltage and the output of the variable frequency.

Supplier — AvecGlob Company — offers at affordable prices services related to the design, production, testing, distribution and servicing of modern drive technologies by supplying the appropriate power modules. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.