Series ultralow frequency high voltage generator

Abstract

The invention belongs to the technical field of electric installations and discloses a series ultralow frequency high voltage generator. The series ultralow frequency high voltage generator comprises a power source circuit, a control unit, a drive circuit, relay units, a first high voltage electronic switch, a first boosting transformer, a second high voltage electronic switch and a second boosting transformer. A primary coil of the first boosting transformer and a primary coil of the second boosting transformer are connected with a power source through the relay units. The first output end of a secondary coil of the first boosting transformer is connected with the second output end of a secondary coil of the second boosting transformer through the first high voltage electronic switch, the first output end of the secondary coil of the second boosting transformer is connected with a load through the second high voltage electronic switch, and thus a two-level transformer series boosting structure is formed. The power source circuit is connected with the power source, and the power source is switched. The control unit is connected with the power source circuit. The control unit is respectively connected with the control ends of the relay units, the control end of the first high voltage electronic switch and the control end of the second electronic switch through the drive circuit, and thus action control is achieved.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to a serial ultra-low frequency high voltage generator. Background technique [0002] High-voltage generator, also known as DC high-voltage generator, is the traditional name of high-voltage power supply, which refers to the high-voltage power supply mainly used in insulation and leakage detection. There are currently two types of ultra-low frequency high-voltage generators on the market. The working principle of the first type of ultra-low frequency high-voltage generator is to modulate an amplitude-modulated wave with an envelope of 0.1 Hz by rotating a special rotary voltage regulator, and then boost it up through a transformer. to the required voltage, and then through the rectifier silicon stack, mechanical switch, and discharge resistor to demodulate the high-voltage amplitude modulation wave to produce 0.1Hz high-voltage electricity. The output waveform distorti...

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Problems solved by technology

The output waveform distortion of this type of product is large, which leads to serious heating of the equipment during operation, and a sharp increase in safety risks, so that it cannot work continuously

The second type of ultra-low-frequency high-voltage generator uses a single-chip microcomputer to control the light-controlled high-voltage switch unit, and the discharge resistor demodulates the high-voltage amplitude modulation wave to produce 0.1Hz high-voltage electricity. Due to equipment safety restrictions, the highest output of this type of product is 0.1Hz high-voltage electricity. The maximum peak voltage is only 50kV, and the output range is too small to be widely used; at the same time, due to the limitations of the equipment itself, the low control accuracy at high voltage seriously restricts the use accuracy

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