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Partitioned self-coupling compensation type three-phase AC voltage stabilizing device

A technology of three-phase AC and voltage stabilizing devices, which is applied in the direction of instruments, control/regulation systems, and electrical variable adjustments, to achieve the effects of reducing the frequency of shifting, reducing the frequency of shifting voltage shocks, and strengthening protection

Active Publication Date: 2020-11-13
中电科瑞志电源技术(西安)有限公司
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Problems solved by technology

[0004] In order to solve the problems existing in the existing compensating AC voltage stabilizer, the present invention provides a three-phase AC voltage stabilizing device with self-coupling compensation in partitions, including an auto-compensating three-phase main circuit unit, a compensation control unit, and a trigger unit , Protect the drive unit

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  • Partitioned self-coupling compensation type three-phase AC voltage stabilizing device
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  • Partitioned self-coupling compensation type three-phase AC voltage stabilizing device

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with accompanying drawing.

[0041] figure 1 It is a block diagram of the system composition of the partitioned self-coupling compensation type three-phase AC voltage stabilizing device. The compensation control unit outputs the three-phase trigger control signal P5 to the trigger unit, and the three-phase trigger control signal P5 is triggered by the A phase, B phase, and C phase control signal P5A , P5B, and P5C; the trigger unit sends a trigger signal P6 to the auto-compensated three-phase main circuit unit according to the input three-phase trigger control signal to control the on-off of the bidirectional thyristor in the three-phase thyristor switch group. The compensation control unit simultaneously outputs the three-phase non-trigger zone control signal P4 and the three-phase trigger gating control value discrimination signal P7 to the protection drive unit, and the three-phase non-trigger zone ...

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Abstract

The invention relates to a zonal self-coupling compensation type three-phase alternating current voltage stabilizer, which comprises a self-coupling compensation type three-phase main circuit unit, acompensation control unit, a trigger unit and a protection driving unit; the compensation control unit consists of three compensation control circuits which comprise an analog-to-digital conversion coding circuit, a decoding gating circuit, a delay protection circuit, a trigger gating configuration circuit and an error detecting and judging circuit respectively, the compensation control unit respectively samples three-phase phase voltages and outputs corresponding three phase trigger control signals, three phase non-trigger area control signals and three phase trigger gating control value judgment signals; and the protection driving unit controls whether a three-phase thyristor switch group is protected or not according to the input three phase trigger gating control value judgment signals. The voltage stabilizer can adjust the number of subareas of the alternating current voltage in the input fluctuation range and change the compensation mode and the compensation precision; while interlocking control is achieved, whether a logic error occurs in the control circuit or not is used for protecting the thyristor switch group, so that the protection force aiming at the abnormal workingprocess is effectively strengthened.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a partition auto-compensation three-phase AC voltage stabilizing device. Background technique [0002] The existing compensating single-phase and three-phase AC voltage stabilizers have the advantages of wide range of voltage regulation, almost no distortion of the waveform, high overall efficiency and strong load adaptability. The principle is to automatically control the switching of different winding coils of the primary winding on the compensation transformer according to the level of the input voltage, using the ratio relationship between the primary side working winding and the secondary winding, or by adjusting the voltage applied to the primary winding , providing bidirectional and multi-level voltage compensation, so as to achieve the purpose of voltage regulation and stabilization. [0003] The disadvantage of the existing compensated AC voltage stabilizer is th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/30
CPCG05F1/30
Inventor 欧伟明凌云周维龙肖会芹
Owner 中电科瑞志电源技术(西安)有限公司
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