modified static var compensator using a large value ac capacitor

to overcome some of the limitations of conventional static var compensators (svcs) which are widely used for reactive power compensation, a modified svc (msvc) has been proposed. msvc uses a large value ac capacitor. the large value ac capacitor is realized using unipolar dc capacitors and power semiconductor devices. unlike the conventional svcs, the proposed msvc does not require additional shunt passive filters for harmonic filtering. msvc has been verified through analysis and simulation. a practical implementation of msvc has been realized and tested.