Belyakova I. Simulation and calculation of piezoelectric transformers, loaded with fluorescent lamps

In this work the studies of high-frequency semiconductor starter devices, based on piezoelectric current transformers, were undertaken, and the method of calculation was devised, which takes into account both - properties of the piezoelectric transformer and its non-linear load (which is a fluorescent lamp) during launch and in operational modes, with and without starter arrangements. The experimental equipment for measuring the properties of piezoelectric transformer and currents it produces, in arrangement with and without a starter, was designed and constructed. The scheme for high-frequency transducer was devised, which provides reliable operation of piezoelectric transformer in all possible modes of operation (idling, short circuit, the regime of maximum efficiency); the method of calculation of structural and electrical properties of piezoelectric transformer was also developed, which could be recommended for calculating the properties of piezoelectric transformer with non-linear load (e.g. fluorescent lamp). Experimental studies of the impact the change in load, current, frequency of power source and ambient temperature has on the properties of piezoelectric transformer have been conducted. The mathematical model of piezoelectric transformer has been improved, which is based on the properties of non-linear quadripole that have been established by the experiment