High voltage frequency conversion power supply device

Abstract

The invention provides a high voltage frequency conversion power supply device, which is characterized by comprising a high voltage incoming cabinet and a transformer. A high voltage cable is connected into the high voltage incoming cabinet and connected to the transformer, the high voltage incoming cabinet is provided with a plurality of stages of current limiting resistors, the transformer is connected with a transducer through the high voltage cable, the transducer is formed by series connection and parallel connection of a plurality of pulse width modulation (PWM) power units, the transducer is connected with a sine filter through the high voltage cable, and the sine filter is connected with a high voltage outgoing cabinet through the high voltage cable. The high voltage frequency conversion power supply device is further provided with a programmable logic controller (PLC), and the PLC is connected with the transducer through a signal wire. The high voltage frequency conversion power supply device is reasonable in structure, good in reliability, convenient to use and control and capable of achieving high voltage frequency conversion output effectively.

Description

technical field [0001] The invention relates to a frequency converter, in particular to a high-voltage variable frequency power supply device. Background technique [0002] The shore power variable frequency power supply devices in the prior art are all low-voltage variable frequency power supply devices, and their disadvantages are that they have high requirements for power supply; low power factor; low frequency stability accuracy; High frequency, large harmonic coefficient and poor output waveform have a certain impact on the safe use of marine equipment. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-voltage variable-frequency power supply device with a more reasonable structure, good stability, and convenient use and control for the deficiencies of the prior art. [0004] The technical problem to be solved by the present invention is achieved through the following technical solutions. The present i...

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Problems solved by technology

[0002] The shore power variable frequency power supply devices in the prior art are all low-voltage variable frequency power supply devices, and their disadvantages are that they have high requirements for power supply; low power factor; low frequency stability accuracy; High frequency, large harmonic coefficient and poor output waveform, which have a certain impact on the safe use of marine equipment

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