Power class E inverter and rectifier.pptx

Describes the construction and working of a class E inverter and rectifier so that any one can understand its operation and use it for various applications like power supply, and other engineering fields

1. CLASS E RESONANT INVERTERS AND RECTIFIERS

2. Class E Resonant Inverters are theoretically capable of delivering any power to a load and achieve 100% efficiency at any frequency of operation. In practice efficiency in the “high 90's” can be achieved into megahertz frequencies regardless of inverter output powers. The topology also allows the manipulation of output power through sub-optimal operation, with a negligible efficiency penalty. Class E topology for use in the growing market for portable, battery powered lighting. It exhibits a peak recorded power efficiently of over 98%, and a conservatively measured efficiency of 95% across a range of dimming settings.

3. Class E Zero Voltage Switching (ZVS) Inverter exploits LCR resonance to deliver AC power to a load. A series resonant circuit is excited from a DC source via a large inductance Lf through a switching IGBT . Provided Lf is large enough, the input to the IGBT and resonant circuit appears as a current source. The series resonant circuit generates voltage gain of magnitude equal to its quality factor. A load may make up any part of the LCR circuit, as do the parasitic characteristics inherent in the switching device. The body diode of the IGBT is exploited to allow for so-called sub-optimum mode operation for a load with a a variable resistance. Describes and derives many circuit networks to match an inverter to any load.