Delta modulated buck type PWM converter

A delta-modulated, buck-type, three-phase pulse-width modulation (PWM) rectifier is described. The rectifier is of the current source type and is intended to be used in conjunction with controlled current inverters. An outer proportional feedback loop regulates the unidirectional output current flowing through the DC link. An inner feedback loop maintains near-sinusoidal waveform currents at unity or leading power factor from the utility power supply. The inner loop controls the current indirectly by delta modulation of the voltage across the AC terminals of the converter. The converter was conceived as the circuit dual of the hysteresis current controlled boost-type rectifier. Experimental results from a laboratory model are presented.<<ETX>>

[1]  P. Ziogas.  The Delta Modulation Technique in Static PWM Inverters , 1981, IEEE Transactions on Industry Applications.

[2]  Xiaoliang Ma,et al.  High-Performance PWM Frequency Changers , 1986, IEEE Transactions on Industry Applications.

[3]  B.T. OOi,et al.  An integrated AC drive system using a controlled-current PWM rectifier/inverter link , 1986, 1986 17th Annual IEEE Power Electronics Specialists Conference.

[4]  M. Azizur Rahman,et al.  Performance Analysis of Delta Modulated PWM Inverters , 1987, IEEE Transactions on Power Electronics.

[5]  Boon-Teck Ooi,et al.  Transient Tests on a Voltage-Regulated Controlled-Current PWM Converter , 1987, IEEE Transactions on Industrial Electronics.

[6]  Atsuo Kawamura,et al.  A high frequency AC/DC converter with unity power factor and minimum harmonic distortion , 1987, IEEE Power Electronics Specialists Conference.

[7]  S. Nonaka,et al.  A PWM current source type converter-inverter system for bidirectional power flow , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[8]  Boon-Teck Ooi,et al.  Indirect current control of a unity power factor sinusoidal current boost type three-phase rectifier , 1988 .

[9]  J.W. Dixon,et al.  Dynamically stabilized indirect current controlled SPWM boost type 3-phase rectifier , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.