Simulated voltage generation device for inverter grid-connection experiment

A technology for simulating voltage and generating devices, applied in measuring devices, parts and instruments of electrical measuring instruments, etc., can solve problems such as the inability to accurately and truly reflect the characteristics of grid-connected inverters and the inability to continuously adjust the voltage.
CN104730299AInactive Publication Date: 2015-06-24XIAN XINWEI INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIAN XINWEI INFORMATION TECH
Publication Date
2015-06-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a simulated voltage generation device for inverter grid-connection experiment. The simulated voltage generation device comprises a square-wave generator, a pre-value frequency divider, a phase-locked loop, a programmable address generator, a dual-port RAM, a main control unit, a D / A and voltage forming circuit, a D / A and waveform reference forming circuit, a precision voltage stabilization source, and a man-machine interface. The simulated voltage generation device is characterized in that a square-wave signal generated by the square-wave generator enters the pre-value frequency divider controlled by the main control unit and then enters the phase-locked loop controlled by the main control unit so as to generate a needed frequency signal which is then sent to the dual-port RAM by the address generator; a signal generated by the dual-port RAM enters the D / A and waveform reference forming circuit, and a waveform reference generated by the precision voltage stabilization source enters the D / A and voltage forming circuit so as to generate a needed voltage waveform; and the man-machine interface is connected with the main control unit, and comprises keys and a display.
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Description

technical field

[0001] The invention belongs to the technical field of power electronics and relates to a power supply device, in particular to an analog voltage generating device used for grid-connected experiments of inverters. Background technique

[0002] An inverter is a device that converts DC power into AC power. The most widely used device that converts DC power into power frequency AC power.

[0003] The solar photovoltaic power generation system produces direct current power. In order to meet the requirements of users, the inverter needs to convert the direct current power into power frequency alternating current power to meet the power supply requirements of many AC appliances. The AC power output by the inverter is connected to the public grid, and must meet the conditions of the same frequency and the same phase, and the purpose of transmitting power to the grid is achieved by adjusting the voltage. Therefore, the function and performance requirements of photo...

Claims

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