Alternating current voltage stabilizer and alternating current voltage stabilizing equipment

Abstract

The utility model provides an alternating-current voltage stabilizer and alternating-current voltage stabilizing equipment. The alternating-current voltage stabilizer comprises a single-phase voltage stabilizing circuit, the single-phase voltage stabilizing circuit comprises a normal output branch, a first compensation branch and a second compensation branch; the first compensation branch comprises first compensation modules and first switches which are in one-to-one correspondence; the first end of the first first compensation module is connected with an input live wire, the second end of the N1th first compensation module is connected with the first end of the (N1 + 1) th first compensation module, and the second end of each first compensation module is connected with an output live wire through a corresponding first switch; the second compensation branch comprises a second compensation module and a second switch which are in one-to-one correspondence; the compensation voltages of the first compensation module and the second compensation module are opposite; the normal output branch comprises a third switch, and the third switch is connected between the input live wire and the output live wire. The alternating current voltage stabilizer provided by the utility model is simple in winding process, can be suitable for high-power voltage stabilizing equipment, and is easy to transform.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage stabilization, and in particular relates to an AC voltage stabilizer and an AC voltage stabilization device. Background Art

[0002] An AC voltage stabilizer is an electrical device that adjusts and controls the AC voltage. Within a specified voltage input range, it can stabilize the output voltage within a specified range through voltage regulation.

[0003] At present, AC voltage stabilizers usually use tapped compensating transformers for voltage stabilization, with multiple taps drawn from different turns of the tapped compensating transformer. However, the winding process of this type of voltage stabilizer is complicated and is not suitable for high-power voltage stabilization equipment. Moreover, it is not easy to modify after the taps are fixed. Utility Model Content

[0004] In view of this, the embodiments of the utility model provide an AC voltage stabilizer and an AC voltage stabilizing device to solve the problems that the existing AC voltage stabilizer has a complex winding process, is not suitable for high-power voltage stabilizing devices, and is not easy to modify after the tap is fixed.

[0005] The first aspect of the embodiment of the utility model provides an AC voltage stabilizer, including a single-phase voltage stabilizing circuit; the single-phase voltage stabilizing circuit includes a normal output branch, a first compensation branch and a second compensation branch;

[0006] The first compensation branch includes a first compensation module and a first switch corresponding to each other; the first end of the first first compensation module is connected to the input live wire, the second end of the N1th first compensation module is connected to the first end of the N1+1th first compensation module, and the second end of each first compensation module is connected to the output live wire through the corresponding first switch; 1≤N1≤M1-1, M1 is the number of first compensation modules;

[0007] The second compensation branch includes a one-to-one corresponding second compensation module and a second switch; the first end of the first second compensation module is connected to the input live wire, the second end of the N2th second compensation module is connected to the first end of the N2+1th second compensation module, and the second end of each second compensation module is connected to the output live wire through the corresponding second switch; 1≤N2≤M2-1, M2 is the number of second compensation modules;

[0008] The compensation voltages of the first compensation module and the second compensation module are opposite;

[0009] The normal output branch includes a third switch, a first end of the third switch is connected to the input live wire, and a second end of the third switch is connected to the output live wire.

[0010] In some possible implementations, the first compensation module includes a first compensation transformer;

[0011] A first end of the primary winding of the first compensating transformer is connected to the input live wire, and a second end of the primary winding of the first compensating transformer is connected to the neutral wire;

[0012] A first end of the secondary winding of the first compensation transformer is connected to a first end of the first compensation module, and a second end of the secondary winding of the first compensation transformer is connected to a second end of the second compensation module.

[0013] In some possible implementations, the first compensation module further includes a first reserved winding;

[0014] The first end of the first reserved winding is connected to the first end of the primary winding of the first compensation transformer, and the second end of the first reserved winding is the first reserved end.

[0015] In some possible implementations, the second compensation module includes a second compensation transformer;

[0016] A first end of the primary winding of the second compensating transformer is connected to the neutral line, and a second end of the primary winding of the second compensating transformer is connected to the input live line;

[0017] A first end of the secondary winding of the second compensation transformer is connected to a first end of the second compensation module, and a second end of the secondary winding of the second compensation transformer is connected to a second end of the second compensation module.

[0018] In some possible implementations, the second compensation module further includes a second reserved winding;

[0019] The first end of the second reserved winding is connected to the second end of the primary winding of the second compensation transformer, and the second end of the second reserved winding is the second reserved end.

[0020] In some possible implementations, the AC voltage stabilizer also includes an isolation transformer connected to the single-phase voltage stabilization circuit; the isolation transformer is used to convert the first AC voltage of the input power supply into a second AC voltage, and the single-phase voltage stabilization circuit is used to stabilize the second AC voltage within a preset voltage range.

[0021] In some possible implementations, the AC voltage regulator further includes a fourth switch connected between the input power supply and the isolation transformer.

[0022] In some possible implementations, when the isolation transformer has at least two-phase output, each phase output of the isolation transformer is connected to a single-phase voltage stabilizing circuit.

[0023] In some possible implementations, M1≥1, M2≥1.

[0024] A second aspect of an embodiment of the utility model provides an AC voltage stabilizing device, comprising the AC voltage stabilizer as described in the first aspect or any possible implementation of the first aspect.

[0025] The AC voltage stabilizer provided in this embodiment includes a single-phase voltage stabilization circuit; the single-phase voltage stabilization circuit includes a normal output branch, a first compensation branch and a second compensation branch, the first compensation branch includes a one-to-one corresponding first compensation module and a first switch, the second compensation branch includes a one-to-one corresponding second compensation module and a second switch, the compensation voltages of the first compensation module and the second compensation module are reversed, the normal output branch includes a third switch, the normal output branch can output according to the input live wire, the first compensation branch and the second compensation branch can perform step-up compensation and step-down compensation on the voltage of the input live wire respectively, the AC voltage stabilizer of this embodiment performs voltage compensation through a separate first compensation module and a second compensation module instead of directly using a tap-type compensation transformer, which can simplify the winding process of the voltage stabilizer and can be applicable to high-power voltage stabilization equipment, and the AC voltage stabilizer of this embodiment can change the compensation ratio of the first compensation branch and / or the second compensation branch of the AC voltage stabilizer by simply modifying the first compensation module and / or the second compensation module, which is convenient to modify and can reduce the modification cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 The structure of the AC voltage stabilizer provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0028] Figure 2 The structure of the AC voltage stabilizer provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0029] Figure 3 The structure of the AC voltage stabilizer provided by the embodiment of the utility model is shown in FIG. Figure 3 ;

[0030] Figure 4 The structure of the AC voltage stabilizer provided by the embodiment of the utility model is shown in FIG. Figure 4 ;

[0031] Figure 5 The structure of the AC voltage stabilizer provided by the embodiment of the utility model is shown in FIG. Figure 5 . DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0033] In order to illustrate the technical solution of the present utility model, specific embodiments are provided below for illustration.

[0034] See also Figure 1 , the embodiment of the utility model provides an AC voltage stabilizer, including a single-phase voltage stabilizing circuit; the single-phase voltage stabilizing circuit includes a normal output branch 11, a first compensation branch 12 and a second compensation branch 13;

[0035] The first compensation branch 12 includes a first compensation module 121 and a first switch K1 corresponding to each other; the first end of the first compensation module 121 is connected to the input live wire Lin, the second end of the N1th first compensation module 121 is connected to the first end of the N1+1th first compensation module 121, and the second end of each first compensation module 121 is connected to the output live wire Lout through the corresponding first switch K1; 1≤N1≤M1-1, M1 is the number of the first compensation modules 121;

[0036] The second compensation branch 13 includes a one-to-one corresponding second compensation module 131 and a second switch K2; the first end of the first second compensation module 131 is connected to the input live wire Lin, the second end of the N2th second compensation module 131 is connected to the first end of the N2+1th second compensation module 131, and the second end of each second compensation module 131 is connected to the output live wire Lout through the corresponding second switch K2; 1≤N2≤M2-1, M2 is the number of the second compensation modules 131;

[0037] The compensation voltages of the first compensation module 121 and the second compensation module 131 are opposite;

[0038] The normal output branch 11 comprises a third switch K3 , a first end of the third switch K3 is connected to the input live wire Lin, and a second end of the third switch K3 is connected to the output live wire Lout.

[0039] Wherein, N1, M1, N2 and M2 are all positive integers. M1 and M2 may be equal or unequal. It should be noted that: Figure 1 Only an example is given in which both M1 and M2 are 2. In practical applications, the values ​​of the two can be determined according to actual usage requirements and are not specifically limited here.

[0040] When M1 and M2 are both 1, the first compensation branch 12 includes a first compensation module 121 and a first switch K1, the first end of the first compensation module 121 is connected to the input live wire Lin, and the second end of the first compensation module 121 is connected to the output live wire Lout through the first switch K1; the second compensation branch 13 includes a second compensation module 131 and a second switch K2, the first end of the second compensation module 131 is connected to the input live wire Lin, and the second end of the second compensation module 131 is connected to the output live wire Lout through the second switch K2.

[0041] When M1 and M2 are both greater than 1, the first compensation branch 12 includes at least two first compensation modules 121 and at least two first switches K1, the first compensation modules 121 and the first switches K1 correspond one to one, the first end of the first first compensation module 121 is connected to the input live wire Lin, the second end of the N1th first compensation module 121 is connected to the first end of the N1+1th first compensation module 121, and the second end of each first compensation module 121 is connected to the output live wire Lout through the corresponding first switch K1; 1≤N1≤M1-1; the second compensation branch 13 includes at least two second compensation modules 131 and at least two second switches K2, the second compensation modules 131 and the second switches K2 correspond one to one, the first end of the first second compensation module 131 is connected to the input live wire Lin, the second end of the N2th second compensation module 131 is connected to the first end of the N2+1th second compensation module 131, and the second end of each second compensation module 131 is connected to the output live wire Lout through the corresponding second switch K2; 1≤N2≤M2-1.

[0042] The compensation voltage of the first compensation module 121 and the second compensation module 131 can be set according to the actual use requirements, and no specific restrictions are made here. For example, it can be determined according to the standard voltage between the input live wire Lin and the neutral wire N and the compensation ratio of the first compensation module 121 and the second compensation module 131. Exemplarily, assuming that the standard voltage between the input live wire Lin and the neutral wire N is 220V, and the compensation ratio of each first compensation module 121 is -2.5%, then the compensation voltage of the first compensation module 121 is 220*(-2.5%)=-5.5V, and the compensation voltage of the two first compensation modules 121 is -5.5*2=-11V, and the compensation ratio of the two first compensation modules 121 is -5%, and so on. Assuming that the compensation ratio of the second compensation module 131 is 2.5%, the compensation voltage of the second compensation module 131 is 220*2.5%=5.5V, the compensation voltage of the two second compensation modules 131 is 5.5V*2=11V, and the compensation ratio of the two second compensation modules 131 is 5%, and so on.

[0043] In this embodiment, the corresponding switch can be controlled to close according to the actual use requirements, so that the voltage output by the output live wire Lout is stabilized within the preset voltage range. Exemplarily, assuming that the voltage between the input live wire Lin and the neutral wire N is within the preset voltage range, the third switch K3 can be directly closed, and the first switch K1 and the second switch K2 are disconnected, so that the voltage between the output live wire Lout and the neutral wire N is the same as the voltage between the input live wire Lin and the neutral wire N; assuming that the voltage between the input live wire Lin and the neutral wire N is lower than the lower limit of the preset voltage range, a second switch K2 of the second compensation branch 13 can be controlled to close according to the corresponding calculation, so that the voltage after the compensation voltage of the second compensation branch 13 is superimposed on the voltage between the input live wire Lin and the neutral wire N is within the preset voltage range; assuming that the voltage between the input live wire Lin and the neutral wire N is higher than the upper limit of the preset voltage range, a first switch K1 of the first compensation branch 12 can be controlled to close according to the corresponding calculation, so that the voltage after the compensation voltage of the first compensation branch 12 is superimposed on the voltage between the input live wire Lin and the neutral wire N is within the preset voltage range.

[0044] The AC voltage stabilizer provided in this embodiment includes a single-phase voltage stabilizing circuit; the single-phase voltage stabilizing circuit includes a normal output branch 11, a first compensation branch 12 and a second compensation branch 13, the first compensation branch 12 includes a one-to-one corresponding first compensation module 121 and a first switch K1, the second compensation branch 13 includes a one-to-one corresponding second compensation module 131 and a second switch K2, the compensation voltages of the first compensation module 121 and the second compensation module 131 are reversed, the normal output branch 11 includes a third switch K3, the normal output branch 11 can output according to the input live wire Lin, the first compensation branch 12 and the second compensation branch 13 are connected to each other. The voltage of the input live wire Lin can be compensated for by boosting and by bucking, respectively. The AC voltage stabilizer of this embodiment performs voltage compensation through a separate first compensation module 121 and a second compensation module 131, instead of directly using a tapped compensation transformer, which can simplify the winding process of the voltage stabilizer and can be applied to high-power voltage stabilizing equipment. The AC voltage stabilizer of this embodiment can change the compensation ratio of the first compensation branch 12 and / or the second compensation branch 13 of the AC voltage stabilizer by simply modifying the first compensation module 121 and / or the second compensation module 131, which is convenient for modification and can reduce the modification cost.

[0045] In some embodiments, see Figure 2 , the first compensation module 121 includes a first compensation transformer T1;

[0046] A first end of the primary winding of the first compensation transformer T1 is connected to the input live wire Lin, and a second end of the primary winding of the first compensation transformer T1 is connected to the neutral wire N;

[0047] A first end of the secondary winding of the first compensation transformer T1 is connected to a first end of the first compensation module 121 , and a second end of the secondary winding of the first compensation transformer T1 is connected to a second end of the second compensation module 131 .

[0048] In some embodiments, see Figure 2 , the second compensation module 131 includes a second compensation transformer T2;

[0049] A first end of the primary winding of the second compensation transformer T2 is connected to the neutral line N, and a second end of the primary winding of the second compensation transformer T2 is connected to the input live line Lin;

[0050] A first end of the secondary winding of the second compensation transformer T2 is connected to a first end of the second compensation module 131 , and a second end of the secondary winding of the second compensation transformer T2 is connected to a second end of the second compensation module 131 .

[0051] See also Figure 2 , the first compensation branch 12 may include a one-to-one corresponding first compensation transformer T1 and a first switch K1; the first end of the primary winding of each first compensation transformer T1 is connected to the input live wire Lin, and the second end of the primary winding of each first compensation transformer T1 is connected to the neutral wire N; the first end of the secondary winding of the first first compensation transformer T1 is connected to the input live wire Lin, the second end of the secondary winding of the N1th first compensation transformer T1 is connected to the first end of the secondary winding of the N1+1th first compensation transformer T1, the second end of the secondary winding of the M1th first compensation transformer T1 is connected to the output live wire Lout through the M1th first switch K1, and the second end of the secondary winding of the N1th first compensation transformer T1 is also connected to the output live wire Lout through the N1th first switch K1; 1≤N1≤M1-1.

[0052] The second compensation branch 13 includes a one-to-one corresponding second compensation transformer T2 and a second switch K2; the first end of the primary winding of each second compensation transformer T2 is connected to the neutral line N, and the second end of the primary winding of each second compensation transformer T2 is connected to the input live line Lin; the first end of the secondary winding of the first second compensation transformer T2 is connected to the input live line Lin, the second end of the secondary winding of the N2th second compensation transformer T2 is connected to the first end of the secondary winding of the N2+1th second compensation transformer T2, the second end of the secondary winding of the M2th second compensation transformer T2 is connected to the output live line Lout through the M2th second switch K2, and the second end of the secondary winding of the N2th second compensation transformer T2 is also connected to the output live line Lout through the N2th second switch K2.

[0053] Among them, the compensation voltage of the first compensation transformer T1 and the second compensation transformer T2 can be set according to actual use requirements. The absolute values ​​of the compensation voltages of the first compensation transformer T1 and the second compensation transformer T2 can be the same or different. The compensation voltages of each first compensation transformer T1 can be the same or different. The compensation voltages of each second compensation transformer T2 can be the same or different.

[0054] The embodiment of the present application compensates the voltage through a separate smaller first compensation transformer T1 and a second compensation transformer T2, thereby achieving the purpose of voltage stabilization, which can reduce the complexity of the winding process, can be applicable to high-power voltage stabilization equipment, and is easy to modify.

[0055] In some embodiments, see Figure 3 , the first compensation module 121 also includes a first reserved winding L1;

[0056] A first end of the first reserved winding L1 is connected to a first end of the primary winding of the first compensation transformer T1 , and a second end of the first reserved winding L1 is a first reserved end.

[0057] Exemplarily, the standard voltage between the input live wire Lin and the neutral wire N may be 220V or 230V. In order to adapt to this situation, each first compensation module 121 may be provided with a first reserved winding L1, and the first reserved winding L1 is connected in series with the primary winding of the first compensation transformer T1. When the standard voltage between the input live wire Lin and the neutral wire N is 220V, the first end of the primary winding of the first compensation transformer T1 is connected to the input live wire Lin, and the first reserved end is idle. When the standard voltage between the input live wire Lin and the neutral wire N is 230V, the second end of the first reserved winding L1, i.e., the first reserved end, is connected to the input live wire Lin, and the first end of the primary winding of the first compensation transformer T1 is no longer connected to the input live wire Lin.

[0058] In order to accommodate more possible situations of the standard voltage between the input live wire Lin and the neutral wire N, the number of the first reserved windings L1 can be at least two, the first reserved windings L1 are connected in series, the first end of the first first reserved winding L1 is connected to the first end of the primary winding of the first compensation transformer T1, the first ends of the other first reserved windings L1 are connected to the second end of the previous first reserved winding L1, and the second end of each first reserved winding L1 is a first reserved end.

[0059] In some embodiments, see Figure 3 , the second compensation module 131 also includes a second reserved winding L2;

[0060] A first end of the second reserved winding L2 is connected to a second end of the primary winding of the second compensation transformer T2 , and a second end of the second reserved winding L2 is a second reserved end.

[0061] Exemplarily, the standard voltage between the input live wire Lin and the neutral wire N may be 220V or 230V. In order to adapt to this situation, each second compensation module 131 may be provided with a second reserved winding L2, and the second reserved winding L2 is connected in series with the primary winding of the second compensation transformer T2. When the standard voltage between the input live wire Lin and the neutral wire N is 220V, the second end of the primary winding of the second compensation transformer T2 is connected to the input live wire Lin, and the second reserved end is idle. When the standard voltage between the input live wire Lin and the neutral wire N is 230V, the second end of the second reserved winding L2, i.e., the second reserved end, is connected to the input live wire Lin, and the second end of the primary winding of the second compensation transformer T2 is no longer connected to the input live wire Lin.

[0062] In order to accommodate more possible situations of the standard voltage between the input live wire Lin and the neutral wire N, the number of the second reserved windings L2 can be at least two, the second reserved windings L2 are connected in series, the first end of the first second reserved winding L2 is connected to the second end of the primary winding of the second compensation transformer T2, the first ends of the other second reserved windings L2 are connected to the second end of the previous second reserved winding L2, and the second end of each second reserved winding L2 is a second reserved end.

[0063] In some embodiments, see Figure 4 The AC voltage stabilizer also includes an isolation transformer T3 connected to the single-phase voltage stabilizing circuit; the isolation transformer T3 is used to convert the first AC voltage of the input power supply into a second AC voltage, and the single-phase voltage stabilizing circuit is used to stabilize the second AC voltage within a preset voltage range.

[0064] The preset voltage range can be set according to actual needs and is not specifically limited here.

[0065] In some embodiments, see Figure 4 The AC voltage stabilizer further includes a fourth switch K4 connected between the input power supply and the isolation transformer T3.

[0066] In some embodiments, when the isolation transformer has at least two-phase output, each phase output of the isolation transformer is connected to a single-phase voltage stabilizing circuit.

[0067] Exemplarily, the isolation transformer may have a single-phase output, a two-phase output, a three-phase output, or any possible number of phases, and each phase output of the isolation transformer is connected to a single-phase voltage stabilizing circuit.

[0068] See also Figure 5, which shows an AC voltage stabilizer when the isolation transformer is a three-phase output. Among them, LA, LB and LC are the A phase, B phase and C phase of the input power supply respectively. LinA, LinB and LinC are the A phase input live wire, B phase input live wire and C phase input live wire respectively. LoutA, LoutB and LoutC are the A phase output live wire, B phase output live wire and C phase output live wire respectively. The A phase output of the isolation transformer is connected to the A phase input live wire LinA, the B phase output of the isolation transformer is connected to the B phase input live wire LinB, and the C phase output of the isolation transformer is connected to the C phase input live wire LinC.

[0069] exist Figure 5 In the example, each phase output of the isolation transformer is connected to a single-phase voltage stabilizing circuit to achieve three-phase voltage stabilization.

[0070] In some embodiments, M1≥1, M2≥1.

[0071] In a specific application scenario, see Figure 5 , M1 = 2, M2 = 2. The compensation voltage of the first compensation transformer T1 is -5.5V, and the compensation voltage of the second compensation transformer T2 is 5.5V.

[0072] It should be noted that the embodiment of the present application does not impose any specific restrictions on the switch types of the first switch K1 , the second switch K2 , the third switch K3 , and the fourth switch K4 , and any switch that can achieve the corresponding function may be used.

[0073] It should be noted that Figures 2 to 5 Only an example is given in which both M1 and M2 are 2. In practical applications, the values ​​of the two can be determined according to actual usage requirements and are not specifically limited here.

[0074] Corresponding to the above-mentioned AC voltage stabilizer, an embodiment of the utility model provides an AC voltage stabilizing device, including any of the above-mentioned AC voltage stabilizers, and having the beneficial effects of any of the above-mentioned AC voltage stabilizers.

[0075] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. An AC voltage stabilizer, characterized in that: It includes a single-phase voltage stabilizing circuit; the single-phase voltage stabilizing circuit includes a normal output branch, a first compensation branch and a second compensation branch; The first compensation branch includes a one-to-one corresponding first compensation module and a first switch; the first end of the first first compensation module is connected to the input live wire, the second end of the N1th first compensation module is connected to the first end of the N1+1th first compensation module, and the second end of each first compensation module is connected to the output live wire through the corresponding first switch; 1≤N1≤M1-1, M1 is the number of first compensation modules; The second compensation branch includes a one-to-one corresponding second compensation module and a second switch; the first end of the first second compensation module is connected to the input live wire, the second end of the N2th second compensation module is connected to the first end of the N2+1th second compensation module, and the second end of each second compensation module is connected to the output live wire through the corresponding second switch; 1≤N2≤M2-1, M2 is the number of second compensation modules; The compensation voltages of the first compensation module and the second compensation module are opposite; The normal output branch includes a third switch, a first end of the third switch is connected to the input live line, and a second end of the third switch is connected to the output live line.

2. The AC voltage stabilizer according to claim 1, characterized in that: The first compensation module includes a first compensation transformer; A first end of the primary winding of the first compensating transformer is connected to the input live wire, and a second end of the primary winding of the first compensating transformer is connected to the neutral wire; A first end of the secondary winding of the first compensation transformer is connected to a first end of the first compensation module, and a second end of the secondary winding of the first compensation transformer is connected to a second end of the second compensation module.

3. The AC voltage stabilizer according to claim 2, characterized in that: The first compensation module also includes a first reserved winding; The first end of the first reserved winding is connected to the first end of the primary winding of the first compensation transformer, and the second end of the first reserved winding is the first reserved end.

4. The AC voltage stabilizer according to claim 1, characterized in that: The second compensation module includes a second compensation transformer; A first end of the primary winding of the second compensating transformer is connected to the neutral line, and a second end of the primary winding of the second compensating transformer is connected to the input live line; A first end of the secondary winding of the second compensation transformer is connected to a first end of the second compensation module, and a second end of the secondary winding of the second compensation transformer is connected to a second end of the second compensation module.

5. The AC voltage stabilizer according to claim 4, characterized in that: The second compensation module also includes a second reserved winding; The first end of the second reserved winding is connected to the second end of the primary winding of the second compensation transformer, and the second end of the second reserved winding is a second reserved end.

6. The AC voltage stabilizer according to any one of claims 1 to 5, characterized in that: The AC voltage stabilizer also includes an isolation transformer connected to the single-phase voltage stabilization circuit; the isolation transformer is used to convert the first AC voltage of the input power supply into a second AC voltage, and the single-phase voltage stabilization circuit is used to stabilize the second AC voltage within a preset voltage range.

7. The AC voltage stabilizer according to claim 6, characterized in that: The AC voltage regulator further includes a fourth switch connected between the input power source and the isolation transformer.

8. The AC voltage stabilizer according to claim 6, characterized in that: When the isolation transformer has at least two-phase output, each phase output of the isolation transformer is connected to one of the single-phase voltage stabilizing circuits.

9. The AC voltage stabilizer according to any one of claims 1 to 5, characterized in that: M1≥1, M2≥1.

10. An AC voltage stabilizing device, characterized in that: It comprises the AC voltage stabilizer as claimed in any one of claims 1 to 9.

Images