Low-temperature rise power transformer of inverter power supply

Abstract

The invention discloses a low-temperature rise power transformer of an inverter power supply. The low-temperature rise power transformer structurally comprises a high-voltage bushing, a low-voltage bushing, an oil storage tank, an oil level gauge, an internal thermometer, a movable underframe, a transformer main body, an oil discharge pipe and an internal window, wherein the internal window is arranged at the right side of the internal window; the oil discharge pipe is embedded into the left side of the transformer main body; the transformer main body comprises an inverter bridge, a tap switch, a respirator, an intelligent radiator, a connection plate, an iron core, a winding, a transformer housing, an oil purifier and an oil cylinder; the tap switch is arranged at the upper part of the inverter bridge; the respirator is embedded into the upper surface of the intelligent radiator; the winding is arranged at the right side of the transformer housing; and the oil cylinder is arranged atthe right side of the oil purifier. The low-temperature rise power transformer of the inverter power supply is provided with the transformer main body in structure, so that the temperature rise rate of the power transformer is reduced through the intelligent radiator and the winding, the heat can be timely dissipated, the internal temperature does not reach an over-high state and the service lifeof the transformer is not shortened.

Description

technical field [0001] The invention relates to a low-temperature rise inverter power transformer, which belongs to the field of transformers. Background technique [0002] In recent years, the accident rate of damage to power transformers and related equipment due to short-circuit faults is relatively high, and the resulting losses are also very serious. In the prior art, the effect of reducing short-circuit current by increasing short-circuit impedance and thereby reducing short-circuit faults is very obvious, but , the existing high-impedance transformers are usually equipped with positive and negative voltage regulating coils, and the positive and negative voltage regulating switches are used for voltage regulation. The magnetic field of the coil is opposite, and the leakage magnetic field strength is very large, resulting in a much larger leakage loss than the rated tap. The resistance loss includes the resistance loss of the high voltage coil and the resistance loss of...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a power transformer with a low-temperature rise inverter power supply, so as to solve the problem that the heating speed of the existing power transformer is too fast, the heat dissipation is not timely enough, and the internal temperature is too high, which may easily lead to the failure of the transformer. The problem of shortened service life

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