Paralleled DSP-based soft switching-mode rectifiers with robust voltage regulation control

This paper presents the current sharing and robust voltage regulation controls for paralleled digital signal processor-based soft switching-mode rectifiers (SSMRs). First, the design and implementation of single-module SSMRs are made. In dealing with the current control loop design of each SSMR module, the small-signal model is derived and used to design the current-controlled pulse-width modulation (PWM) scheme. As to the common voltage control loop, its dynamic model is estimated from measurements. Then, a quantitative design procedure is developed to find the parameters of the voltage controller according to the prescribed control specifications. As the changes of parallel number and operating condition occur, the robust control is added to reduce the voltage regulation control performance degradation. The proposed multimodule operation control scheme consists of a master controller and N slave controllers. The former further consists of a common voltage controller and a current distribution unit, and the latter are the current-controlled PWM schemes of all SSMRs. Each slave controller receives the weighted sinusoidal current command from the master controller and regulates the feedback current of SSMR. The results confirm that the designed parallel SSMR system possesses good line drawn current power quality, module current sharing and voltage regulation control performances.

[1]  Gene Moriarty,et al.  Digital Control Using Digital Signal Processing , 1998 .

[2]  C. M. Liaw,et al.  Operation control of paralleled three-phase battery energy storage system , 1996 .

[3]  H. Jin,et al.  Digital controller design for switchmode power converters , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[4]  Paolo Mattavelli,et al.  Power factor preregulators with improved dynamic response , 1995 .

[5]  Tamotsu Ninomiya,et al.  Static and dynamic response of a parallel-module high power-factor converter system with current-balancing controllers , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[6]  C. Liaw,et al.  Parameter estimation of excitation systems from sampled data , 1992 .

[7]  Fred C. Lee,et al.  Novel zero-voltage-transition PWM converters , 1992 .

[8]  K.W.E. Cheng,et al.  A fully soft-switched extended-period quasi-resonant power-factor-correction circuit , 1997 .

[9]  S. Huth.  DC/DC-converters in parallel operation with digital load distribution control , 1996, Proceedings of IEEE International Symposium on Industrial Electronics.

[10]  George C. Verghese,et al.  Fast controller for a unity-power-factor PWM rectifier , 1996 .

[11]  H. F. Vanlandingham,et al.  Improved large-signal performance of paralleled DC-DC converters current sharing , 1999 .

[12]  Simone Buso,et al.  Simple digital control improving dynamic performance of power factor preregulators , 1997 .

[13]  Fred C. Lee,et al.  A classification and evaluation of paralleling methods for power supply modules , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[14]  George C. Verghese,et al.  An adaptive digital controller for a unity power factor converter , 1996 .

[15]  Chang-Ming Liaw,et al.  A soft-switching mode rectifier with power factor correction and high frequency transformer link , 2000 .

[16]  Chang Jun Seo,et al.  Deadbeat controller design for a soft-switched high-frequency resonant rectifier , 1998 .

[17]  I. Batarseh,et al.  Closed-loop design for two parallel connected converters with power factor correction , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[18]  J. Sebastian,et al.  An overview of power factor correction in single-phase off-line power supply systems , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.

[19]  S. J. Chiang,et al.  Robust control of multimodule current-mode controlled converters , 1993 .

[20]  Seppo J. Ovaska,et al.  Digital control of power supplies-opportunities and constraints , 1998, IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200).