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This paper presents some controllers based on the concept of charge control for a converter used in an application of power factor correction. The converter is composed by the interleaved connection of two or more boost converters connected to the grid by means of a non controlled diode rectifier. Charge control represents a cheap solution to guarantee current sharing among the different converters...
A new very high efficiency 10 kW isolated R4 boost converter for low-voltage high-power fuel cell applications is presented. Using a new concept for partially paralleling of isolated boost converters, only the critical high ac-current parts are paralleled. Four 2.5 kW power stages, consisting of full-bridge switching stages and power transformers, operate in parallel on primary side and in series...
The working principle and design method of wide range and wide band alternate current measurement device are introduced in this paper. In this device, two-stage current transformer is used as a shunt to solve the problem of large current input, non-inverting composite amplifier technology is employed to improve the accuracy of amplified audio signal, the log and anti-log amplifiers are adopted to...
A new simple and low cost method for paralleling multiple power stages in high-power high-gain isolated full-bridge boost converters is presented. A small current balancing transformer and serial connection of transformer secondary windings provides ideal current sharing between paralleled power stages. Effective and safe parallel operation of multiple switching stages can thus be performed. By splitting...
Energy harvesting or scavenging from environment is being researched intensively. The main motivation of the research is to develop a maintenance free energy source for ubiquitous electronics, such as wireless sensors or sensor networks. The on-line condition monitoring of electric motors requires also sensors that are installed at the motor. In this case, the energy required by sensors could be harvested...
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