| Title |
Comparison of Three-Phase Voltage-Source PWM Converters Using a Single Current Sensor |
| Authors |
이우철(Lee, Woo-Cheol) ; 이택기(Lee, Taeck-Kie) ; 현동석(Hyun, Dong-Seok) |
| Keywords |
Minimum time ; reconstruction ; modifying the switching state ; predictive state observer ; sampling delay |
| Abstract |
This paper presents a technique for reconstructing converter line currents using the information from a single current sensor in the DC-link for voltage-source PWM converters. When three-Phase input currents cannot be reconstructed, three methods to acquire the input current are compared. Two of them are methods of modifying the switching state (I, II), 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 10kVA. |