SU1265949A1 - Polyphase converter of electric power - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used as a secondary source of electrical power. The purpose of the invention is to improve the reliability, the improvement of the quality of energy conversion and the expansion of the field of application. The converter contains an electromagnetic apparatus with sectioned winding windings and a multi-cell valve bridge including valves 1-24. The valve windings are divided into sections and are connected in an unexpected way, in series, to form a closed polygonal star. Each section of valve windings is provided with Qj-4, b, -t, c, -c. The taps are connected with lines to the AC terminals of the valve bridge, to the DC output of which the load 25 is connected. Thanks to the supply of winding sections from -. water and the implementation of the valve bridge with the number of arms equal to the number of taps between the taps of two different sections of this phase, located about S opposite to the center of the star of the valve windings, forms (L with the largest potential difference creating a diagonal EMF, under the action of which it opens a pair of multi-cell gate valves. The remaining bridge gates at this time are closed by the reverse voltage generated by ira. As a result, a load 25 is provided with a current of each g hc g t f t to a 4iii2 ii2 2kiii m $ mMMM $ / 3 5 7 f tf 1} fS 17 a tt a Fig1

Description

the house of the contour of the tOK intersection, cyclic loading currents with simultaneous interchange of the periodically ensured high quality convertible ferrules. This allows the conversion of energy and the use of a converter with improved reliability. 2 hp f-ly, 5 ill.

1265949

The invention relates to electrical engineering and can be used as a secondary power supply (VIP) mainly with a voltage of 1 and x consumers exceeding by about the order of the voltage of the valves, i.e. at tens of hundreds of volts and above, in the case of the silicon structure of a semiconductor, with increased load currents and at the same time ensuring high quality energy conversion.

The purpose of the invention is to increase reliability, improve the quality of the energy conversion and the range of application.

FIG. 1 shows a circuit diagram of a converter when connecting valve coils to a hexagonal star; in fig. 2 is a vector diagram of current-generating EMF S, (j 1.12) l), or Н output voltage pulses. Voltage U, n clarifying in the phase plane the principle of operation of the converter in FIG. 3 -5 - converter circuit when connecting the windings in two, four and octagonal star.

The converter (fig.) Contains twelve cell valve bridge, with twenty-four converting elements - valves 1-24, to the DC terminals of which the load 25 is connected, and the AC outputs are connected through twelve lines with taps 4- uIi, bj-bj ,,, c ,, - C4, valve windings of phases C1, 6 and: C, divided in each phase into four sections Oi, Qi, Clj, Cl4, bi bj ji, Bl1, s, jCj Cj j and C. Sections are connected in series with themselves and topologically form a regular closed hexagonal star (Jl 6 where L is the number of lines).

The converter works as follows.

Between the taps of two different sections of this phase, located opposite to the center of the star (for example, between the taps bj and bj), the largest potential difference is formed from the total number of L - 1 possible combinations of pairs of taps relative to this one. This largest potential difference forms a diagonal EMF (DEDS), under the action of which a corresponding pair of gates 1-24 opens - one each from the anode (odd numbers) and cathode (even numbers) of their groups. As a result, the load 25 is provided with a current in each JA - M current-passing circuit, cyclically changing within the period of the converted EMF (, P, P V / 2, where P is the frequency ratio of P, B is the number of gates).

In particular, under the action of a DEDS, formed between the taps Lg and Lz, valves 1 and 2 are opened, while the remaining valves are closed by the reverse voltage applied on them, the switching phenomenon is not taken into account).

Similarly, the rest of the P – 1 pulses of the decode voltage and, fig 2, are shown as Sju vectors, with Sj4 the numbers of the corresponding open valves and the taps between which the currently-formed DEDS are indicated are shown similarly.

Claims (3)

When performing taps with the number of turns of parts, each winding section in the ratio sin (29 -up): sinlp syp (ЗСн + 30) °: sin 1 when - counting the first of them adjacent to the top of the star (for example, parts ai , ci, and cif, Fig. 1), the device provides on the load a series of signed impulses with equal amplitudes and a phase shift of 29 2f / n 30 el.grad. relative to each other (fig, 2), while H is half the angle at the top of the star, O J / n half of the envelope period of the output voltage in idle mode P (frequency ratio of this voltage pulsation). For other values of L, i.e. when the valve windings are connected to inins l-coal stars (, fig.Z;, fig. 4, l 8, fig. 5), the processes occurring in the device and the positive effect produced in this case are similar to those described. Claim 1. Multiphase electrical energy converter containing an electromagnetic apparatus with valve windings divided into sections, which are interconnected in series and topologically, a closed central L. star and l lines connected to the AC output terminals of a cell. tilting bridge, the DC outputs of which form the output pins, differing in those. / "X; dgsh;, g ,, 2;    11.12} Uo P12 , ffJ.  ., w., i7, d) /  Sslcics-.d.Wj Fig.2494 that, in order to increase reliability, improve the quality of energy conversion and spread the field of application, it is equipped with a L-valve bridge with L-line connected to it, the DC terminals of which are connected unipolarly in parallel with the terminals of the cell-bridge, the image of L is the cell valve bridge, l), and the free terminals of the L-lines are connected to the taps additionally inserted into each section of the valve windings and form the basic conversion structure. 2. The converter according to claim 1, characterized in that an analogous converter structure is additionally introduced into the circuit, the direct current terminals are connected in parallel or in series with the direct current output of the main structure. 3. The converter according to claim 2, about t and h and y and the fact that the findings of the direct current of the main and additional converter structures are autonomous.