WSEAS Transactions on Power Systems
Print ISSN: 1790-5060, E-ISSN: 2224-350X
Volume 14, 2019
Point of Common Coupling Power Factor Conditioning of Connected Loads with PWM Rectifier
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Abstract: The proliferation of poor power factor loads can deteriorate the network due to their negative impacts. In this research, a power factor conditioning of PCC is presented as another role of pulse width modulation rectifier. The main purpose of PWM rectifier is to adjust and regulate the output DC-voltage with low harmonic distortion of AC-source current. If inductive loads connected to same PCC, the PWM rectifier can also compensate for load reactive power. These two functions of PWM rectifier can improve overall system power factor and decrease added cost elaborated with equipment required for compensation. The proposed control scheme is based on d-q theory in which transformation from abc to d-q frames is carried out for both load and converter currents. Quadrature portion of load current, which represents load reactive power, will be inserted in current controller with negative phase to compensate for reactive power and improve poor power factor. The proposed control algorithm is realized by a low-cost 80C196KC microcontroller which provides multi-functions adequate for practical system implementation. Inductive load emulation is presented by a three-phase induction motor due to its widespread applications and variable power factor at different mechanical loads.
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Pages: 24-32
WSEAS Transactions on Power Systems, ISSN / E-ISSN: 1790-5060 / 2224-350X, Volume 14, 2019, Art. #3