Introduction of six phase half wave rectifier
The connection diagram for six phase half wave uncontrolled rectifier is shown in the figure A. The primary winding of the transformer is connected in delta whereas the secondary winding consists of centre taped star winding. The point N is common point at which the centre tap of each winding is connected. The voltage across R phase, Y phase and B phase are 120o phase displacement with each other whereas the voltage across R and R’, Y and Y’ and B and B’ is 180o.
Circuit diagram of six phase half wave rectifier
Working of six phase half wave rectifier
The waveform of the six phase and conduction of diodes are
shown in the figure B.
Point a
The voltage of
the phase Y’ becomes maximum with respect to other phases therefore the diode
D6 conducts and current flows through path phase Y’ – D6 – Load – N.
Point B
The voltage of
the phase R becomes maximum with respect to other phases therefore the diode D1
conducts and current flows through path phase R – D1 – Load – N.
Point C
The voltage of the phase B’ becomes
maximum with respect to other phases therefore the diode D2 conducts and current flows
through path phase B’ – D2 – Load – N. Similarly the diode D3,
D4 and D5 conducts for specific time interval.
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