Three-phase pure sinusoidal wave inverse power supply system with digital control
Title：
Three-phase pure sinusoidal wave inverse power supply system with digital control
Application Number：
 200310121704
Application Date：
 2003/12/19
Announcement Date：
 2004/12/08
Pub. Date：
Publication Number：
 1553562
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H02M 7/42H02M 7/48
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Yu Qingguang, Wang Hao
Key Words：
 Three-phase, sinusoidal wave, power supply system, digital control
Abstract：
 The three phases pure sine wave inverter power supply system under total numerical control belongs to inverter power supply field. Its main feature is: the chips of SA4828 for PWM generator, EXB840 for driving circuit and MiniSkip for main circuit are connected in turn under the MPU control; the protective circuit adopts bridge arm parallel connection for resistance, capacitance, diode and inverter; the driving power supply can be gotten from the rectified and filtered output of the high frequency transformer; the MPU employs high volume onchip program and data memory; the high frequency switch IGBT reaches 100KHZ; the driving signal is isolated by opt-couple, the feedback signal is isolated by mutual inductor and transformer; it has test control terminal and can connect to remote computers. It can provide pure sine wave output for communication and power equipment.
Claim：
Priority：
PCT：
LegalStatus：
 2008-2-6Date of deemed withdrawal

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