717 publications from this institution
This paper presents a DSP-controlled shunt active filter for harmonic termination of a power distribution line. The purpose of the active filter based on voltage detection is to damp out harmonic propagation caused by line inductors and shunt capacitor for power factor correction. However, time and phase delays inherent in the control circuit of the active filter might lead to poor harmonic damping performance. The hardware and software designs are important for achieving stable operation and satisfactory damping performance. This paper provides the details of design and implementation of a fully-digital controller for the active filter. Experimental results verify the viability and effectiveness of the DSP-controlled shunt active filter.
This paper presents an application of a modular multilevel cascade converter based on single-delta bridge-cells (MMCC-SDBC) to a STATic synchronous COMpensator (STATCOM), particularly for negative-sequence reactive-power control. The SDBC is characterized by cascade connection of multiple single-phase H-bridge (or full-bridge) converter cells per leg, thus leading to flexible circuit design, low voltage steps, and low EMI emissions. However, no paper has been published on such a STATCOM with experimental verification. This paper designs, constructs, and tests a 100-V 5-kVA PWM STATCOM based on the SDBC with focus on operating principle and performance. Experimental results verify that it can control not only positive-sequence reactive power but also negative-sequence reactive power and low-frequency active power intended for flicker compensation of arc furnaces.
