Three Phase to Six Phase Transformation of Electrical Transformer -Electronicsinfos

What is a Three Phase to Six Phase Transformation?

    Three Phase to Six Phase Transformation

    Three-phase to six-phase transformation means we use 6 windings on the secondary side of the transformer. We use the exact nature of windings in a phase transformer. we connected primary winding to three three-phase supply and obtained a six-phase output from six secondary windings.

    There are different methods used to obtain the three-phase to the six-phase transformation including

    • Double Delta Connection
    • Double Star Connection
    • Diametrical Connection 

    Double Delta Connection

    Double Delta connection in which we connect the secondary of the transformer in such a way that generates two sets of delta circuits. 

    The first delta connection points are taken from 1,3,5 and the second delta connection points are taken from 2,4,6. Every Transformer secondary consists of two different coils. 

    one set of delta connections is connected in the normal way and another set is connected in a reverse way. Remember in three phases to six-phase transformation the primary windings are either in delta or star.

    Three Phase to Six Phase Transformation of Electrical Transformer -Electronicsinfos

    Double delta connection, also known as "closed delta" or "bipolar" connection. In This connection each phase has two windings connected in a delta (triangular) configuration.

    In a double delta connection, each winding is connected in a closed loop or circular configuration, forming two separate delta connections. The three ends of the two delta connections are then connected together, creating three terminals for the three-phase system.

    A double delta connection is used in situations where a three-phase system is required, but only two phases are available. It is also used in applications where the load is not balanced, such as in electric locomotives.

    A double delta connection has the advantage of providing a higher voltage and /4725power output than a single delta connection. it can also provide a more balanced voltage output than other configurations. However, it requires a larger number of windings and can be more difficult to implement than other types of connections.

    Double Star Connection

    A double Star connection is a type of six-phase transformation in which the secondary winding of the transformers is arranged in two sets of star connections. The neutral points have  0 and 0 potential and act like a neutral in DC circuits.

    Three Phase to Six Phase Transformation of Electrical Transformer -Electronicsinfos

    Double star connection, also known as "Double Wye" connection, is a method of connecting three-phase electrical equipment, such as transformers or motors, where each phase has two windings connected in a "Y" or "star" configuration.

    In a double-star connection, the terminals of each phase are connected to two separate "Y" configurations, resulting in a total of six terminals. This creates two parallel paths for the flow of current in each phase and allows for flexibility in the choice of voltage and current levels.

    A double star connection is also known as an "open-delta" connection, as it is formed by connecting the three phases in a delta (triangular) configuration and leaving one point open. The remaining points form the three-phase system, with the open point serving as a reference for measuring the voltage and current.

    Double star connection is commonly used in applications where a three-phase system is required, but the load is not large enough to justify the use of a full three-phase transformer or motor. It is also used in situations where a three-phase system is required, but only a limited number of phases are available, such as in remote locations where the power supply is limited.

    Diametrical Connection 

    Diametric connection is an advanced form of delta connection in which Only Three Windings are used and each winding has two terminals making six terminal transformations. we also obtained neutral wire in this system.

    Three Phase to Six Phase Transformation of Electrical Transformer -Electronicsinfos

    Diametrical connection refers to a specific configuration used in electrical engineering for connecting certain types of electrical machines, such as generators and transformers.

    In a diametrical connection, the windings of the electrical machine are arranged so that they are circularly connected in series, with the ends of adjacent coils connected together to form a closed loop.

    This means that the winding terminals are located on opposite sides of the machine and are separated by the diameter of the machine.

    The purpose of the diametrical connection is to reduce the effects of circulating current, which can occur when multiple windings are connected in parallel. Circulating current can cause unwanted heating and inefficiencies in the machine, which can reduce its performance and lifespan.

    By connecting the windings in a diametrical configuration, the circulating current is reduced because the windings are effectively connected in series. This can improve the efficiency and performance of the machine, particularly in high-voltage applications.

    Diametrical connections are commonly used in electrical generators and transformers, particularly those with high voltages and power ratings. They are also used in some types of electric motors, although other types of connections are more commonly used in motor applications.


    Faqs(Frequently Asked Questions)

    Post a Comment