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Frequency conversion control method, device, shore power system and storage medium

A frequency conversion control and power supply system technology, applied in the field of frequency conversion control, can solve the problem that the frequency converter cannot independently and freely adjust the output voltage and its frequency

Active Publication Date: 2020-12-25
SIEMENS ELECTRICAL DRIVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] This application provides a frequency conversion control method, device, shore power system and storage medium, which solves the technical problem that the frequency converter cannot independently and freely adjust the output voltage and its frequency in the prior art

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  • Frequency conversion control method, device, shore power system and storage medium
  • Frequency conversion control method, device, shore power system and storage medium
  • Frequency conversion control method, device, shore power system and storage medium

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Embodiment Construction

[0077] The applicant found that in the prior art, a frequency converter is used for frequency conversion, and the frequency converter is designed according to the proportional relationship between the motor frequency and voltage. It is not applicable in many scenarios. For example, the frequency conversion of onshore power generation equipment requires the frequency to remain constant and the voltage to be adjusted according to the working conditions.

[0078] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals represent the same parts. In the drawings showing the respective embodiments, the same last two digits represent components with the same structure or similar structures but the same function.

[0079] In order to make the drawing concise, the parts rela...

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Abstract

The invention discloses a frequency conversion control method, an apparatus, a shore power system and a storage medium. The method includes collecting a first voltage value of a first power supply source. A real-time voltage amplitude and a real-time voltage frequency of each phase voltage and a real-time voltage waveform phase of each phase voltage are calculated according to the first voltage value. Adjusting the real-time voltage amplitude and the real-time voltage frequency independently; The output voltage is obtained according to the adjusted real-time voltage amplitude and real-time voltage frequency and the phase modulation of the real-time voltage waveform. By regulating the frequency and the voltage of each phase of the multi-phase voltage separately, the technical problem that the voltage and the frequency need to guarantee the specific proportional relation limitation by adopting the frequency converter in the prior art is solved.

Description

technical field [0001] The invention relates to the field of frequency conversion control, in particular to a frequency conversion control method, device, shore power system and storage medium. Background technique [0002] Frequency conversion control is one of the most widely used technologies in the field of electronic control. The frequency conversion in the prior art is realized by a frequency converter, but when the frequency converter converts the frequency of the motor, due to its own design limitations, the voltage and frequency need to be adjusted according to a fixed ratio. However, in some scenarios, such as onshore power supply and grid connection, it is necessary to independently adjust the voltage and frequency of the power generation equipment. The above-mentioned technical problems of frequency conversion are especially widely used in the field of shore power. [0003] In the field of frequency conversion of shore power, the onshore power supply system and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458H02J3/38H02J3/26
CPCH02J3/26H02J3/38H02M5/458Y02E40/50
Inventor 吕海英吴玉红
Owner SIEMENS ELECTRICAL DRIVES