Matching and control method of high-capacity adjustable simulated RLC test load

Abstract

The invention discloses a matching and control method of a high-capacity adjustable simulated RLC test load. The matching and control method comprises the steps of: connecting a high-capacity adjustable simulated combined resistor, a capacitor and an inductive load into a test circuit in parallel, wherein the resistor, the capacitor and the inductive load are of a matrix structure; conducting grid-connected switching on the resistor, the capacitor and the inductive load by means of selection of switches; and realizing real-time matching and control. According to the matching and control method, the problem of precise loading of the high-capacity adjustable simulated RLC test load is solved, and loading of a pure resistive load, a pure inductive load and a pure capacitive load can be realized; the problem of constant-power loading under the condition that an actual alternating-current voltage value is not equal to rated voltage of a load component can be solved; and when three phases are unbalanced, a matrix structure is adopted, so that constant power of each phase is precisely matched and loaded. The matching and control method can be widely applied to test of various large-capacity power supply equipment.

Description

technical field [0001] The invention belongs to the technical field of power system control, and relates to a matching and control method for a large-capacity adjustable simulated RLC test load. Background technique [0002] Large-capacity adjustable simulated RLC test load is a device used to simulate the actual load operating characteristics on site, and is widely used in high-power AC power supplies, diesel generator sets, transformers, communication power supplies, uninterruptible power supplies (UPS), inverters and other equipment The fields of power test, electrical test, aging test and reliability test are used to test the electrical performance indicators of the above-mentioned equipment. [0003] The existing large-capacity adjustable analog RLC test loads include resistive loads, inductive loads, and capacitive loads and their combinations. The matching method of load capacity is usually by determining the resistance value and capacitance of each power consumption ...

AI Technical Summary

Problems solved by technology

[0004] This load control method has the following deficiencies: 1. The performance of most components requires the components to reach the inherent design parameters under the rated voltage and rated load conditions, especially the load conditions have a greater impact on the electrical performance and function of the components, but this A large supporting simulated RLC test load is required, and a large-capacity simulated RLC test load is not only costly but also bulky

2. The traditional large-capacity adjustable analog RLC test load is manually adjusted, which cannot achieve automatic adjustment and precise control. The accuracy of loading is not high, and the calculation is large and time-consuming when matching.

In order to reduce the difficulty of work, a simplified mixed load is usually used, that is, there are inductance or capacitance in the resistance components, which cannot realize the simulation of real pure resistive, pure capacitive and pure inductive loads, which affects the simulation test. Accuracy and Credibility

[0005] At present, for large-capacity adjustable analog combined loads that require precise real-time matching and control, an effective solution has not been proposed, nor is there any published patent

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