Showing papers on "Power optimizer published in 1984"
Patent•
17 Apr 1984
TL;DR: In this article, a rectifier circuit is added at the output of a Class E dc/ac power inverter to shape the waveforms of switch voltage and current so that the transitions of those two waveforms are displaced in time from each other.
Abstract: A Class E switching-mode dc/dc power converter is obtained by adding a rectifier circuit at the output of a Class E dc/ac power inverter. It can operate at high efficiency at high switching frequencies. Further, the power switch is not subjected to high power dissipation or high second-breakdown stress while it is switching between the "on" and "off" states, even if the dc load on the power converter varies over a very wide range, e.g., from open-circuit to short-circuit. The high efficiency is achieved by shaping the waveforms of switch voltage and switch current so that the transitions of those two waveforms are displaced in time from each other. Then the power switch does not experience simultaneously high voltage and high current while switching. High efficiency and low stress on the switch are achieved under all load conditions by interposing a matching network between the output of the Class E dc/ac inverter and the input of the rectifier circuit. That matching network transforms the rectifier input impedance in such a way that the impedance presented to the output of the Class E dc/ac inverter is always in the range which generates switch voltage and current waveforms that yield low power dissipation and low second-breakdown stress during switching, for any value of dc load resistance at the output of the rectifier.
56 citations
TL;DR: The economic viability of a wind energy conversion system is strongly influenced by the wind regime since its power output varies in proportion to the cube of the wind velocity Other factors, such as the time distribution of wind velocity, the cost of the system and its reliability, also play an important part in the overall value of wind energy to the user.
8 citations
Patent•
23 Oct 1984
TL;DR: In this article, the authors propose to continuously operate an inverter even when an AC power source is interrupted by providing power interruption time DC power supply means for supplying and circulating power from a battery to the inverter when the power source interruption is detected.
Abstract: PURPOSE: To continuously operate an inverter even when an AC power source is interrupted by providing power interruption time DC power supply means for supplying and circulating power from a battery to the inverter when the AC power source interruption is detected. CONSTITUTION: A battery 11 is connected through a contactor 11 in the intermediate between a converter 3 and an input terminal capacitor 2, and an AC power source 1 is connected through a contactor 9. An inverter 51 of a load 5 is connected through a DC reactor 4 with the output of the converter 3, which is controlled by a circuit 8 which has a power interruption detector 6 and a controller 7. The battery 11 is connected with the converter 3 at the power interruption time to control the converter 3, thereby continuously operating the inverter 51. COPYRIGHT: (C)1986,JPO&Japio
4 citations