Reactive Power (VAR) Compensation using Photovoltaic (PV) Inverter Assignment

Reactive Power (VAR) Compensation using Photovoltaic (PV) Inverter - Assignment Example The error is sent via PI controller and summed to the grid’s voltage in order in order to get a voltage amplitude equivalent to that of the inverter. Active power generated by the inverter is compared with reference active power signal to produce error. Error passes via PI controller, giving rise to a loading angle. This loading angle is then summed to grid’s voltage phase angle, hence resulting to an increased inverter phase angle. The Phase Locked Loop will still recognize the fundamental positive sequence of the source voltage even at the worst cases scenarios of voltage harmonic distortion.   At these conditions, the active filter absorbs balanced and sinusoidal currents from the source, which are in phase with corresponding fundamental positive sequence of the source voltages. The development of this regulation structure for active power filter is employed when combining with other structures that are to be connected in dc link bus. The structures are static converters that are capable of exchanging active power between an energy source or an energy storage device (capacitor at night). The inverter easily transfers this active power to the grid.   A Power Conditioner with energy storage capability is a viable solution in improving the reliability and the qual ­ity of an electric energy supply. There are several tasks that are performed at a single time, for example current harmonic reduction, smoothing of pulsating loads and reactive power com ­pensation. Moreover, the Power Condioner should work as Uninterruptible Power Supply (UPS) at a short time during interruptions of the grid supply. The Power Compensator is a flexible that is coupled to energy storage device like supercapacitor and battery. At the inverter’s dc side, there is a capacitor that stabilizes proper voltage level for better operation of the inverter that acts current source. The rectifier delivers dc power

Human Resource Management PT 1 Essay Example | Topics and Well Written Essays - 500 words

Human Resource Management PT 1 - Essay Example as emphasized by Mueller & Baum (2011), â€Å"labor, like all organizational resources, is highly dependent on supply and demand of human talent in different occupations, professions and industries† (p. 140). The current discourse hereby aims to identify and discuss HRM concerns, such as organizational restructuring, staffing and selection, and other relevant HR issues in the healthcare setting. Restructuring in organizations are undertaken for varied purposes. Some organizations restructure to accommodate increased or specialized functions, departments, or divisions. Others deem that restructuring is needed to address inefficiencies and to minimize costs. In the study on restructuring, the authors revealed that it has the potential effects of leading to repercussive resignations, low morale from remaining staff, perceptions of insecurity, mistrust to management, low performance and productivty (Duffield and OBrien-Pallas 2002; Duffield, Kearin, Johnson, & Leonard, 2007). measured in terms of apparent effects on cost versus performance or productivity of the remaining workers, in the long-run (Bowes, 2009). According to Cascio (2009), downsizing has the following effects: â€Å"lost business as a result of fewer salespeople; lack of new products since there are fewer R&D staff members; (and) reduced productivity when high performers leave as morale decreases† (p. 1). As such, decreasing the number of employees does not always save an organization money because the organization would be incurring additional costs associated with hiring, training new personnel, and maintaining the current pool of human resources in a motivated and highly productive manner through the use of motivational techniques. Selecting a qualified person for a position necessitates application of acquisition strategies. The organization should have a well-designed job organization system that defines job positions according to qualifications of potential candidates versus the tasks and