Patent ID: 6191564
Filing Date: 2001-02-20
Classification: H02M,Y02B,Y02P

Abstract:
A power factor correcting electrical converter apparatus comprising:a rectifying device, said rectifying device receiving an alternating input signal and generating a rectified input signal;a filtering device connected with said rectifying device; said filtering device smoothing said rectified input signal;an input voltage sensing device connected with said filtering device; said input voltage sensing device generating an input-voltage-indicating signal at an input-voltage-indicating node;an output device connected with said filtering device; said output device delivering power to a load; said output device sensing at least one first electrical parameter associated with said load to produce a first output-indicating signal at a first output-indicating node;a load parameter-sensing device coupled with said load; said load-parameter sensing device sensing at least one second electrical parameter associated with said load to produce a second output-indicating signal at a second output-indicating node;a feedback device; said feedback device being connected with said input-voltage-indicating node, with said first output-indicating node and with said second output-indicating node; said feedback device receiving said input-voltage-indicating signal, said first output-indicating signal and said second output-indicating signal; said feedback device employing said first output-indicating signal and said second output-indicating signal to generate a reference signal; said feedback device employing said reference signal and said input-voltage-indicating signal to generate a control signal; said feedback device employing said control signal to generate a gating signal at a gating node;said output device being connected with said gating node and responding to said gating signal to switchingly control connection between said output device and said load;said input voltage sensing device being configured to impose a delay, said delay causing said input-voltage-indicating signal to be out of phase with said rectified input signal.