Basics of Cycloconverter

• It is AC to AC converter without using any DC link.

• It converts AC signal of fixed frequency to AC signal with variable frequency.

• It is also referred as frequency changer. This conversion is done by using switches like thyristor and controlling mechanism of it.

Need of Cycloconverter

• To Control the speed of motor.

• Frequency can be reduced to drive heavy load.

• Frequency can be increased to drive light load.

• Extensively used for driving large motors like rolling mills, Cement, Water pump industries etc.

Classification of Cycloconverter

Based on output frequency

• Step up Cycloconverter

• Step down Cycloconverter

Based on Phase input and phase output

• 1 Phase to 1 Phase Cycloconverter

• 3 Phase to 1 Phase Cycloconverter

• 3 Phase to 3 Phase Cycloconverter

Applications Cycloconverter

• Cement mill drives

• Rolling mills

• Water pumps

• Washing machine

• Mine winders

• Many industrial applications.