Power converter for correcting power factor

A power converter, comprising:

• a first converting circuit, said first converting circuit having
• a switch assembly alternatively turning on and off for converting a direct current (DC) to a first alternating current (AC);
• a transformer coupled to said switch assembly for transforming said first alternating current to a second alternating current;
• a major switch coupled in parallel with said switch assembly and a first switch device;
• and
• a series-couple boosting switch and a first capacitor coupled in parallel with said switch assembly and said boosting switch couple in parallel with a second switch device;
• a current-limiting inductor coupled in series between said transformer and said switch assembly.

A power converter, comprising:

• a first converting circuit, said first converting circuit having
• a switch assembly alternatively turning on and off for converting a direct current (DC) to a first alternating current (AC);
• a transformer coupled to said switch assembly for transforming said first alternating current to a second alternating current;
• a major switch coupled in parallel with said switch assembly, and a first switch device couple in parallel with said major switch;
• a series-couple boosting switch and a first capacitor coupled in parallel with said switch assembly, said boosting switch couple in parallel with a second switch device;
• a first rectifying circuit coupled in parallel with said switch assembly and said major switch;
• a second rectifying circuit coupled to said transformer;
• and
• a LC wave-filter coupled to said second rectifying circuit.