In Single-phase half wave converters, either the negative or positive half AC wave is blocked or the remaining half is allowed to pass. The means that only one-half of the input reaches in the output, which indicates that, the resulting voltage is lower. A half wave converter requires just single diode in case of single-phase supply and in case of three-phase supply, it needs three diodes. Converters or rectifiers yield pulsating and unidirectional direct current. However, half wave single-phase converter produces far more ripple compared to the full wave rectifier. In addition, increased filtering is required for eliminating the harmonics associated with AC frequency of the output.
ADVANTAGES OF SINGLE PHASE HALF WAVE UNCONTROLLED CONVERTER:
The current flow through the circuit and its output voltage are highly influenced by the type of load.
DISADVANTAGES OF SINGLE PHASE HALF WAVE UNCONTROLLED CONVERTER:
Only half amount of power is delivered at one time, which result in low rectification and power output.
Current is magnetized by the DC saturation associated with the transformer core. It also results in harmonies generation and loss of hysteresis.
The simplest single phase half wave uncontrolled circuit converter is not suitable for industrial use mainly due to poor performance.
Single-phase half wave controlled circuit converter is widely used in the industrial applications of different types.
They have the capacity to operate in the form of an inverter or a controlled rectifier.
The single-phase half wave controlled circuit has poor voltage and current from both input and power factors.
The ripple current and ripple voltage of such converters are high.
These converters have low utilization of transformer factor.
Single-phase half wave controlled circuit is rarely used in the practical life due to their extremely low output and dc output power.
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