SU237983A1 - CONTROLLED TWO-PHASE STATIC CONVERTER - Google Patents

Description

The well-known two-phase static converter on transistors consists of two generators, the output voltages of which

shifted by angle + -, synchronizedZi

Phase-shifting devices containing a choke and a capacitor, forming a series resonant circuit connected to the auxiliary winding of the output transformer of the master oscillator, and a matching transformer.

These devices are complex, have an insufficiently stable synchronization system to obtain an angle of + - phase shift

between output voltages as load changes.

The difference with the proposed converter is that the output transformer of the master generator is equipped with a Correction winding connected in series with the secondary windings of the throttle of the resonant circuit and the primary windings of the matching transformer.

This ensures the stability of the phase angle between the output voltages.

The drawing shows a diagram of the proposed Converter.

impact

depending on the winding device - - or can be shifted by an angle

 . One of

Geerators is Vedu (Tz, T).

, Go), another slave

schim. (T sihikhroizatsii BS with, Block

gives a phase shift voltage. between weekends

CR and condensation: r - and consists of chokes

torus C, which form a series resonant LC coitur, connected to the secondary winding W of the output T / JI transformer of the master oscillator, and the matching transformer Tr.2, the primary windings W2, s and IV-j, Ws of which are connected to successively corrective signals MOTKoii Wo transformer Tpi and secondary) are equipped with throttles of a serial resonant circuit. The master generator of the ciui chron 3 regs LC-coiturol 1 operates at a frequency that is resonant. It is removed from the secondary circuits of the resonant circuit and is corrected; it is connected to the windings of the WoW, the bridge is suspended from the Isodey1 of the switch I iodine ia one of two on the opposite winding pairs Wj, or 14, Ws of the matching transformer. The second of this transformer is a node 0 of the center to the base circuits of the slaves of the driven generator. The parameters of the elements of the slave generator are chosen such that its own frequency is lower than the frequency of the master generator. The synchronization of the slave generator is carried out by forcing the open transistor to bias with a synchronization voltage. Depending on the switch position P, the synchronizing voltage changes its phase by 180 °. As a result, the output is shifted.

voltage of the lead generator by j :;

relative to the output voltage of the slave generator.

The controlled two-phase static converter generates stabilized loads that are shifted by an angle of + when the load and voltage of the power vary over a wide range.

It is designed to work in harsh operating conditions (shock, vibration, and increasing intensity, wide 1M range of variation of ambient temperature), is not critical to the variation of parameters of transistors, with an output power of 2 0g has an efficiency of 85Vo.

Subject invention

A controlled two-phase static converter containing a master and slave generators, made on transistor, a synchronization unit that creates a phase shift between the output winding voltages

transformers generators at an angle H; -; -,

consisting of droplets and a capacitor, forming a series resonant circuit connected to the auxiliary winding of the output transformer of the master generator, and a matching transformer, characterized in that, in order to stabilize the phase angle between the output voltages, the output transformer of the master generator is additionally equipped with a correction winding connected in series with the secondary windings of the specified throttle resonant circuit and the primary windings of the matching transformer.