Power converter with low common mode noise

A power converter with low common mode noise, comprising:

• a ground terminal;
• a power converting unit, including a first DC terminal, a second DC terminal, a first AC terminal, a second AC terminal, and a third AC terminal;
• a capacitor unit of common DC bus, coupled to the first DC terminal and the second DC terminal;
• a filtering capacitor unit, comprising a first filtering capacitor, a second filtering capacitor and a third filtering capacitor, wherein one end of the first filtering capacitor, the second filtering capacitor and the third filtering capacitor are respectively coupled to a first phase terminal, a second phase terminal and a third phase terminal, and the other end of the first filtering capacitor, the second filtering capacitor and the third filtering capacitor are coupled to each other for forming a neutral terminal;
• and
• a filtering inductor unit, comprising:
• a first primary winding, including a first primary winding low-frequency end and a first primary winding high-frequency end, wherein the first primary winding low-frequency end is coupled to the first phase terminal and the first filtering capacitor, and the first primary winding high-frequency end being coupled to the first AC terminal;
• a first auxiliary winding, being magnetic coupled to the first primary winding, and including a first auxiliary winding high-frequency end and a first auxiliary winding low-frequency end coupling to the neutral terminal;
• a second primary winding, including a second primary winding low-frequency end and a second primary winding high-frequency end, wherein the second primary winding low-frequency end is coupled to the second phase terminal and the second filtering capacitor, and the second primary winding high-frequency end being coupled to the second AC terminal;
• a second auxiliary winding, being magnetic coupled to the second primary winding, and including a second auxiliary winding high-frequency end and a second auxiliary winding low-frequency end coupling to the first auxiliary winding high-frequency end;
• a third primary winding, including a third primary winding low-frequency end and a third primary winding high-frequency end, wherein the third primary winding low-frequency end is coupled to the third phase terminal and the third filtering capacitor, and the third primary winding high-frequency end being coupled to the third AC terminal;
• and
• a third auxiliary winding, being magnetic coupled to the third primary winding, and including a third auxiliary winding low-frequency end coupling to the second auxiliary winding high-frequency end and a third auxiliary winding high-frequency end coupling to the ground terminal.