Charge-Equalizer Snubber Circuit for Rectifier Ringing

The patent employs periodic action by using a controlled switching element that operates in periodic cycles to transfer energy from the resonant circuit to a storage capacitor. The switch periodically connects and disconnects to move energy during specific time intervals, replacing the continuous energy dissipation of traditional snubbers with periodic energy transfer, thereby reducing power loss while maintaining voltage protection.

The patent applies discarding and recovering by capturing the energy that would otherwise be dissipated in traditional snubber circuits. The controlled switching element transfers this energy to a storage capacitor where it is recovered and stored for later reuse, such as for zero voltage switching or other power converter functions, converting what was previously wasted energy into a useful resource.

The patent converts the harmful resonant energy into a beneficial resource. Instead of dissipating the ringing energy as heat through heavy damping, the controlled switching element captures this energy and transfers it to a storage capacitor. The previously harmful oscillations become a source of recoverable energy that can be reused for zero voltage switching or other functions, improving overall converter efficiency while still suppressing voltage spikes.

The patent introduces an intermediary energy storage capacitor between the resonant circuit and the rest of the system. This capacitor acts as a mediator that temporarily holds the energy from the resonant circuit, allowing the ringing to be suppressed without directly dissipating it through resistive damping. The intermediary capacitor enables energy transfer and recovery, maintaining productivity while achieving ringing suppression.