Comparison of single-sensor current control in the DC link for three-phase voltage-source PWM converters
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| Title | Comparison of single-sensor current control in the DC link for three-phase voltage-source PWM converters |
| Publication Type | Miscellaneous |
| Year of Publication | 2001 |
| Authors | Lee W-C, Lee T-K, Hyun D-seok |
| ISBN Number | 0278-0046 VO - 48 |
| Keywords | 10 kVA, 3&phi, active vectors, converter line currents reconstruction, Current control, DC link, Delay effects, electric current control, electric sensing devices, Home appliances, input currents, Motor drives, observers, predictive state observer, Pulse width modulation, Pulse width modulation converters, PWM power convertors, sampling delay compensation, Sampling methods, single current sensor, single-sensor current control, Switches, switching state modification, three-phase voltage-source PWM converters, Uninterruptible power systems, Voltage control, voltage-source pulsewidth modulation converters |
| Abstract | This paper presents a technique for reconstructing converter line currents using the information from a single current sensor in the DC link of a converter and comparative evaluation of the performance of single sensor control techniques in the DC link for voltage-source pulsewidth modulation (V-S PWM) converters. When 3φ input currents cannot be reconstructed, three methods to acquire the DC-link current are compared. Two of them are methods of modifying the switching state (I, II), and another is a method of using the predictive state observer. Also, compensation of sampling delay, and a simultaneous sample value of input currents in the center of a switching period are included. Suitable criteria for the comparison are identified, and the differences in the performance of these methods are investigated through experimental results for a typical V-S PWM converter rated at 10 kVA |
| DOI | 10.1109/41.925576 |
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