The Enneagram, however, is ultimately subtle and complex, as you will appreciate the more you use it in your life. As you will see, only a few simple concepts are needed to begin your journey of self-discovery. The three phase balanced system is a special case of a general three-phase system in which zero and negative sequence components are zero.This explanation covers the basics that you will need to understand how the Enneagram works, and will be especially helpful for beginners. The zero phase sequence component is shown in the figure below. In zero phase sequence components, the set of three phasors is equal in magnitude to zero phase displacement from each other. The negative phase sequence is shown in the figure below
In negative phase sequence component, the set of the three phasors are equal in magnitude, spaced 120° apart from each other and having the phase sequence opposite to that of the original phasors. The positive sequence component of the unbalanced three phase system is shown below. In positive phase sequence component, the set of three phasors are equal in magnitude, spaced 120° apart from each other and having the same phase sequence as the original unbalanced phasors. The phase sequence of the positive component is V a, V b and V c and the phase sequence of negative components is V a, V c, and V b. Suppose that the phasors are represented by V a, V b and V c and their phase sequence is V a, V b, and V c.
The balanced set of components can be given as a positive sequence component, negative sequence component, and zero phase sequence component.Ĭonsider an unbalanced voltage phasor system shown in the figure below. The unbalanced three phase system is solved regarding symmetrical components, and then it can be transferred back to the actual circuit.
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