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System optimization method for parallel resonance medium-frequency power supply inverter

An intermediate frequency power supply and system optimization technology, which is applied in the system optimization of power inverters and the system optimization field of parallel resonant intermediate frequency power inverters, can solve the problems of high economic cost, achieve higher current frequency, prolong life, and shut down time zoom out effect

Inactive Publication Date: 2016-05-04
XIAN AOBANG TECH
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Problems solved by technology

Although multiple parallel connections can be used to solve the problem to a certain extent, for high-power intermediate frequency equipment, the economic cost is too high, and the cost of other power devices, such as IGBT, is also several times that of thyristors.

Method used

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  • System optimization method for parallel resonance medium-frequency power supply inverter
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  • System optimization method for parallel resonance medium-frequency power supply inverter

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Embodiment Construction

[0032] Combined with the manual image 3 , with Figure 7 , to further elaborate the circuit optimization method described in the present invention.

[0033] 1. According to the attached image 3 The schematic diagram of the main circuit of the optimized parallel inverter of the present invention can be installed in the main circuit by adding filter capacitors and linear inductors to the conventional parallel inverter main circuit; On the busbar, the linear inductance is connected in series at the rear end of the filter reactor, and at the front end of the parallel inverter.

[0034] Since the parallel inverter has added a filter reactor in the main circuit, the rated voltage of the above filter capacitor only needs to be equal to or slightly higher than the DC voltage of the main circuit; the above linear inductor can be wound with copper tubes, and the current is only It is enough to meet the main circuit current.

[0035] 2. In order to realize the control circuit that ...

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Abstract

The invention relates to a system optimization method for a power supply inverter, and in particularly to a system optimization method for a parallel resonance medium-frequency power supply inverter. The main technical scheme of the system optimization method mainly comprises the aspects of 1, a filter capacitor and a linear inductor are added on a parallel inverter for changing waveform of current passing through a power device; and 2, for adapting the improved tracking control for the parallel inverter, a corresponding operation is carried out. The system optimization method has the beneficial effects that the optimized inverter takes full advantage of the power of the power device, so that the current frequency of the device in use is improved; the application contradiction between high power and high frequency of the parallel inverter in the actual application is solved; and meanwhile, and an RC phase-shifting control circuit is adopted for automatically changing a trigger pulse advanced angle along with changes of working states.

Description

technical field [0001] The invention relates to a system optimization method of a power inverter, in particular to a system optimization method of a parallel resonant intermediate frequency power inverter, which is mainly used in the electrical technical field of metallurgy and heat treatment applications. Background technique [0002] In the prior art, the common parallel resonant intermediate frequency power supply has the characteristics of simple main circuit, convenient control, low economic cost, and adaptability to various types of loads, etc., and thus has been more widely used. However, due to the rapid development of modern machinery manufacturing and metallurgical industries, the requirements for high-quality products, refinement, energy saving, environmental protection, and economy are more high-end. With the development of production, higher frequency and high-power intermediate frequency devices are required. The need becomes more urgent. Therefore, the requir...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/44
CPCH02M7/44
Inventor 罗来卫罗来军梁兵乾张靖韵
Owner XIAN AOBANG TECH
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