DEFINITION PARAMETERS OF INDUCTION MOTORS WITH USING PCEUDOSIGNALS VOLTAGE AND CURRENT

Electromagnetic induction motor parameters needed to determine the losses in the steel and copper, the overload capacity of the engine, as well as calculating and performance. Change the electromagnetic parameters induction motors may be caused by manufacturing defects, intensive exploitation or renovations. Thus, there is a need for an accurate determination of the parameters with predetermined accuracy. However, there is no universal method suitable for different motor capacities, especially on the job. One of the modern methods is that, based on the balance of instantaneous power components for each of the T-shaped equivalent circuit. In turn, a variety of components of instantaneous power allows to make a sufficient number of identification equations. A significant drawback of this method is the need to use an additional source of polyharmonic voltage that causes an increase in the cost of the complex. Thus, to solve this problem, in the article the possibility and efficiency pseudosignals shows current and voltage, which are called "pseudopolyharmonic". Shown various ways of forming pseudosignals and principles on which construction the signal. Alternatively pseudopolyharmonic signals proposed method using the dummy low-frequency power source. The efficiency of determining blood pressure using EMF pceudosources for different fre-quencies of the supply voltage.