The possibility analysis of power increase efficiency in generating devices for onboard radio-electronic means

In the issues of space development there is an important one of power supply maintenance for independent objects; these objects are intended for long-term presence in orbit or in interplanetary space. One of the working capacity maintenance ways of long-term space objects is the increase in power efficiency for the basic consumers – onboard electronic systems. This particularly concerns powerful generating devices for communication purposes. For powerful radio devices the biharmonic mode generator had been widely used. With the advent of powerful solid-state electronics application, duple schemes of consecutive resonant inverters (class generators “D”) [1] came into exploitation. The possibility of energy conversion efficiency increase with an upset loading, was discovered by E. P. Khmelnitskiy in the 1960s [2]. In foreign sources, generators of such type were known as class generators, as in Russian they were identified as key generators with a forming contour [3]. Despite the fact that class E generators provide high energy conversion efficiency for limited key modes frequencies, in a variety of causes their application is limited, and they are still on the stage of experiment. The scheme analysis for a wide range of frequencies and scheme parameters generally, has a lower result. A simplified scheme of the generator is presented in figure 1, where AE is the active element (transistor, lamp) working in the key mode; VD is a diode that provides recuperation of energy of jet elements in an opened key; L, C are the elements of a contour, defining the form of pressure on AE; Lk, Ck are the loading contours, which have been adjusted to the frequency of operating pressure.