SU1330671A2 - Phase-changing device - Google Patents

Abstract

The invention relates to electrical engineering H can be used in single-phase and three-phase controlled power converters, in measurement technology, automatic control devices. The purpose of the invention is to expand the range of adjustment. The device consists of a magnetic circuit I, made in the form of a magnetic bridge with an input winding 2 in one diagonal, an output winding in another diagonal controlling the winding 4 in one of the arms. The forcing winding 6 is additionally inserted into the device, which is connected to the shoulder opposite to the shoulder with the control winding {4, and connected to it in series. At the same time, the shunt winding 5 is loaded on the resistor 7, and the vertical winding 3 with its ends is connected to the load resistor 8. In the device, the angle of shift between the magnetomotive forces of the output and input diagonals is always much larger. 2 Il. S SL / R / W / 14)

Description

ten

1133067

The invention relates to electrical engineering, can be used in single-phase and three-phase controlled power converters, in measurement technology, automatic control devices, and is complementary to auth.s. No. 391618.

The purpose of the invention is to expand the range of adjustment of the output voltage phase.

Fig. 1 is a schematic diagram of the proposed device; in fig. 2 - sector diagram, according to the day of his work.15

The device consists of a magnetic conductor I, made in the form of a magnetic bridge with an input winding 2 in one diagonal, an output winding 3 in another diagonal, the control winding 4 in one of the shoulders, a shunt winding 5 in the shoulder adjacent to the shoulder containing the control winding 4, forced winding 6, includedRM J

R.

+ rl

By choosing the geometry of the shoulder ad, the number of turns of the shunt winding 5 and the size of its load resistor 7, it is possible to ensure that the active part of the complex magnetic resistance of the shoulder ad is significantly less than the reactive component, i.e. R-m4

In this case, we can assume that the magnetic resistance of the shoulder ad is a reactive number, i.e.

Z

/ I4

Jx

CO W

M4

RH,

The input harmonic voltage is applied to the input winding 2.

removed

20

Output voltage U

with the load resistor 7 output winding 3.

In the vector diagram of figure 2

In the arm opposite to arm 25, the following designations are: F, R ', with the control winding 4, and the magnetomotive force of the shoulder ac is connected;

Noah with her consistently. In this case, r RM is the magnetomotive force of the shoulder.

ev; , RMI magnetomotive force of Bd shoulder; РЦХ magneto-motive force of the shoulder ad.

Figure 2 shows for comparison two vector diagrams corresponding to the operation of the basic invention and the proposed device for changing the phase. When magnetized by the shoulder Bd, its magnetic resistance R increases, the vector P increases, and the end of the magnetomotive force vector is the output diagonal of the control winding 4 and the force 40 ™ f moves from the initial

common winding 6, with a change

control current values vary

magnetic resistances R, and R

The shunt winding 5 is loaded on the resistor 7, and the output winding 3 is connected to the load resistor 8 with its ends. The magnetic core is made of a material with losses and has technological gaps.

The device works as follows.

The phase change of the output voltage relative to the input voltage is made by applying control current to the series-connected 35

M5

shoulders ac and ad respectively.

The magnetic resistance of the shoulder R remains constant and depends only on the material and the selected shoulder geometry.

R, 1

 (U ("oS

where 1 is the length of the average line of force

the corresponding section of the magnetic bridge; S - shoulder core core area

ev;

 magnetic permeability. The magnetic resistance of the ad shoulder with the shunt winding 5 is complex and equilibrium

45

50

55

Claims (1)

points dg to point d. The phase angle between the magnetically moving forces of the output and input diagonals of the magnetic bridge varies from tp to q). In the case of control of the shoulder ac with the boost winding 6 connected in series with the control winding 4 of the shoulder Bd, the vector P, RM increases and its end moves from point c to point c. It can be seen from the vector diagram that the phase shift angle between the magnetomotive forces of the output and input diagonals is always much larger in the proposed device for changing the phase of the signal than in the main invention. "Invention Formula The device for changing the phase of the auth. No. 391618, different from RM J R. + rl By choosing the geometry of the shoulder ad, the number of turns of the shunt winding 5 and the size of its load resistor 7, it is possible to ensure that the active part of the complex magnetic resistance of the shoulder ad is significantly less than the reactive component, i.e. R-m4 In this case, we can assume that the magnetic resistance of the shoulder ad is a reactive number, i.e. Z / I4 Jx CO W M4 RH, The input harmonic voltage is applied to the input winding 2. removed Output voltage U with the load resistor 7 output winding 3. In the vector diagram of FIG. 2, f moves from the initial points dg to point d. The phase angle between the magnetically moving forces of the output and input diagonals of the magnetic bridge varies from tp to q). In the case of control of the shoulder ac with the boost winding 6 connected in series with the control winding 4 of the shoulder Bd, the vector P, RM increases and its end moves from point c to point c. It can be seen from the vector diagram that the phase shift angle between the magnetomotive forces of the output and input diagonals is always much larger in the proposed device for changing the phase of the signal than in the main invention. formula of invention The device for changing the phase on t.sv. № 391618, distinguished by 1330671 so that with the aim of expanding there is no adjustment range, the shoulder opposite to the control shoulder is additionally set to force the last ( enveloping tea connected with control .0 R Editor M.Kelemes Compiled by V.Gerih Tehred M. Khodanych Order 3586/52 Circulation 698 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Corrector S.Cherni