After giving a summary of investigated passive and active schemes to mitigate common mode problems a modeling approach for the common mode voltage (CM voltage) is presented for three-level rectifiers. A novel Active Common-mode Voltage Cancellation (ACC) scheme is proposed, utilizing the reconstructed CM voltage to derive a simpler driving scheme as presented by previous contributions. The ACC scheme function based on switched mode operation is explained, modeling and design of the power circuitry including a 5-winding transformer is outlined and simulation results prove its viability and effectiveness in eliminating CM voltage in a 3-phase / 3-level rectifier for telecom systems. A verification of the physical implemented circuitry is obtained from selected measured results on mentioned overall system.
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Chonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South KoreaChonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
Tran, Tan-Tai
Nguyen, Minh-Khai
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Wayne State Univ, Dept Elect & Comp Engn, Detroit, MI 48202 USA
Ho Chi Minh City Univ Technol & Educ, Fac Elect & Elect Engn, Ho Chi Minh City 700000, VietnamChonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
Nguyen, Minh-Khai
Ngo, Van-Quang-Binh
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Duy Tan Univ, Inst Res & Dev, Da Nang 550000, Vietnam
Hue Univ, Univ Educ, Fac Phys, Thua Thien Hue 530000, VietnamChonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
Ngo, Van-Quang-Binh
Nguyen, Huu-Nhan
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Chonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
Duy Tan Univ, Inst Res & Dev, Da Nang 550000, VietnamChonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea
Nguyen, Huu-Nhan
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Duong, Truong-Duy
Lim, Young-Cheol
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Chonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South KoreaChonnam Natl Univ, Dept Elect Engn, Gwangju 500757, South Korea