Rectificier

The rotating rectifier assembly (rectifier bridge) in self-excited brushless synchronous AC generators converts induced AC from the exciter rotor windings into DC current to energize the main generator field. Mounted on the rotor shaft, this diode-based bridge eliminates brushes/slip rings, enabling brushless operation. Key advantages include:

• Utilizes stator-induced AC rectified to DC for excitation
• Enables reliable zero-speed excitation during engine start
• Critical for aviation/industrial systems requiring maintenance-free operation.