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700924 NEW Differential Probe Capable of Wide-Band, High-Voltage Floating Measurements
700924 NEW Differential Probe Capable of Wide-Band, High-Voltage Floating Measurements

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J.W. Phinney, D.J. Perreault, and J.H. Lang, Radio-Frequency Inverters with Transmission-Line Input Networks, 2006 IEEE Power Electronics Specialists Conference , Jeju, Korea, June 2006, pp. 3211-3219.
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... With the aid of the voltage and current symmetries described in the previous section, the steady-state waveforms of the Class Φ in Fig. 1 can be readily derived (see Fig. 3). The switch imposes a constant voltage (Vin ) along the length of the line during the first portion of the switching cycle (wh ...
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... ability. Power quality is more about consumer driven issues and dynamic performance. In this paper control strategies are proposed for STATCOM to address these issues and moreover tested in a grid connected PV system. The simulation results confirm the same [11]. (ii) Optimal utilization of PV syste ...
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Variable-frequency drive



A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable-speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.VFDs are used in applications ranging from small appliances to the largest of mine mill drives and compressors. However, around 25% of the world's electrical energy is consumed by electric motors in industrial applications, which are especially conducive for energy savings using VFDs in centrifugal load service, and VFDs' global market penetration for all applications is still relatively small. That lack of penetration highlights significant energy efficiency improvement opportunities for retrofitted and new VFD installations.Over the last four decades, power electronics technology has reduced VFD cost and size and has improved performance through advances in semiconductor switching devices, drive topologies, simulation and control techniques, and control hardware and software.VFDs are available in a number of different low- and medium-voltage AC-AC and DC-AC topologies.
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