SEMI CONVERTER

A semiconverter, also known as a half-controlled converter, is a type of power electronic device commonly used in DC motor drives.

A semiconverter, also known as a half-controlled converter, is a type of power electronic device commonly used in DC motor drives and power supply applications. It is a bridge configuration of rectifiers that combines controlled devices (such as thyristors) with uncontrolled devices (like diodes). This design allows for partial control of the output voltage, enabling a balance between performance and cost.

Half-Controlled Operation:

• Thyristors provide control over the firing angle and, hence, regulate the output voltage.
• Diodes ensure conduction in specific parts of the AC input cycle.

A single-phase semiconverter consists of:

• Two Thyristors (SCRs): Provide control over the output voltage.
• Two Diodes: Conduct naturally during their respective half-cycles of the AC waveform.