Evaluation of Power Factor Corrected AC - DC Converters and Controllers to meet UPS Performance Index
Harmonic pollution and low power factor in power
systems caused by power converters have been of great concern. To
overcome these problems several converter topologies using
advanced semiconductor devices and control schemes have been
proposed. This investigation is to identify a low cost, small size,
efficient and reliable ac to dc converter to meet the input performance
index of UPS. The performance of single phase and three phase ac to
dc converter along with various control techniques are studied and
compared. The half bridge converter topology with linear current
control is identified as most suitable. It is simple, energy efficient
because of single switch power loss and transformer-less operation of
UPS. The results are validated practically using a prototype built
using IGBT and analog controller. The performance for both single
and three-phase system is verified. Digital implementation of closed
loop control achieves higher reliability. Its cost largely depends on
chosen bit precision. The minimal bit precision for optimum
converter performance is identified as 16-bit with fixed-point
operation. From the investigation and practical implementation it is
concluded that half bridge ac – dc converter along with digital linear
controller meets the performance index of UPS for single and three
phase systems.
[1] Singh B, Singh BN, Chandra A, AL-Haddad A, Pandey A and Kothari
DP, "A review of three phase improved power quality AC- DC
converters", IEEE transactions on industrial electronics, Vol.51, No. 3,
pp. 641-659, June 2004.
[2] Pandey A, Singh B and Kothari DP, "Comparative study of Single phase
Unity power factor ac-dc boost converter topologies", IE (I) Journal
_EL, pp.102-109, July 2003,
[3] Gui-Jia Su, Donald J. Adems and Leon M. Tolbert, "Comparative study
of power factor correction converters for single phase half-bridge
inverters" IEEE IECON 2001, pp. 995-1000.
[4] Mohan, Underland, Robbins, "Power Electronics Converters,
Applications and Design", John Wiley & Sons, 2004.
[5] Muthuramalingam, A, Madivanan R and Kalpana R, "Comparative
study of High Performance Rectifier", IEEE IICPE, pp.216-221,
December 2006, Chennai, India.
[6] Nishida Y and Nakoka M, "Simplified predictive instantaneous current
control for single phase and three phase voltage-fed PFC converters"
IEE proceedings, Electr. Power Appl., Vol. 144. No.1, Jan 1997.
[7] Hirachi K, Sakane M, Matsui T, Kojima A and Nakaoka M, "Costeffective
practical developments of high-Performance and multifunctional
UPS with new system configurations and their specific
control implementations", IEEE PESC 1995, pp.480-485.
[8] Malesani L and Tomasin P, "PWM current control techniques of voltage
source converters - a survey", Proceedings of the IEEE IECON 1991,
pp. 670-675.
[1] Singh B, Singh BN, Chandra A, AL-Haddad A, Pandey A and Kothari
DP, "A review of three phase improved power quality AC- DC
converters", IEEE transactions on industrial electronics, Vol.51, No. 3,
pp. 641-659, June 2004.
[2] Pandey A, Singh B and Kothari DP, "Comparative study of Single phase
Unity power factor ac-dc boost converter topologies", IE (I) Journal
_EL, pp.102-109, July 2003,
[3] Gui-Jia Su, Donald J. Adems and Leon M. Tolbert, "Comparative study
of power factor correction converters for single phase half-bridge
inverters" IEEE IECON 2001, pp. 995-1000.
[4] Mohan, Underland, Robbins, "Power Electronics Converters,
Applications and Design", John Wiley & Sons, 2004.
[5] Muthuramalingam, A, Madivanan R and Kalpana R, "Comparative
study of High Performance Rectifier", IEEE IICPE, pp.216-221,
December 2006, Chennai, India.
[6] Nishida Y and Nakoka M, "Simplified predictive instantaneous current
control for single phase and three phase voltage-fed PFC converters"
IEE proceedings, Electr. Power Appl., Vol. 144. No.1, Jan 1997.
[7] Hirachi K, Sakane M, Matsui T, Kojima A and Nakaoka M, "Costeffective
practical developments of high-Performance and multifunctional
UPS with new system configurations and their specific
control implementations", IEEE PESC 1995, pp.480-485.
[8] Malesani L and Tomasin P, "PWM current control techniques of voltage
source converters - a survey", Proceedings of the IEEE IECON 1991,
pp. 670-675.
@article{"International Journal of Electrical, Electronic and Communication Sciences:63462", author = "A. Muthuramalingam and S. Himavathi", title = "Evaluation of Power Factor Corrected AC - DC Converters and Controllers to meet UPS Performance Index", abstract = "Harmonic pollution and low power factor in power
systems caused by power converters have been of great concern. To
overcome these problems several converter topologies using
advanced semiconductor devices and control schemes have been
proposed. This investigation is to identify a low cost, small size,
efficient and reliable ac to dc converter to meet the input performance
index of UPS. The performance of single phase and three phase ac to
dc converter along with various control techniques are studied and
compared. The half bridge converter topology with linear current
control is identified as most suitable. It is simple, energy efficient
because of single switch power loss and transformer-less operation of
UPS. The results are validated practically using a prototype built
using IGBT and analog controller. The performance for both single
and three-phase system is verified. Digital implementation of closed
loop control achieves higher reliability. Its cost largely depends on
chosen bit precision. The minimal bit precision for optimum
converter performance is identified as 16-bit with fixed-point
operation. From the investigation and practical implementation it is
concluded that half bridge ac – dc converter along with digital linear
controller meets the performance index of UPS for single and three
phase systems.", keywords = "PFC, energy efficient, half bridge, ac-dc converter,boost topology, linear current control, digital bit precision.", volume = "3", number = "4", pages = "1033-9", }