Topological circuit of four-order voltage type inverter and control method thereof

A technology of voltage-type inverter and topological circuit, which is applied in the field of topological circuit and control of fourth-order voltage-type inverter, which can solve the problem of output voltage harmonic distortion, poor anti-interference performance, parameter changes and insensitivity to external disturbances etc. to achieve the effects of reduced switching loss, fast convergence speed, and excellent control performance

Pending Publication Date: 2020-02-18
CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the method has disadvantages such as poor anti-interference performance and obvious harmonic distortion of the output voltage, while the sliding mode variable structure control

Method used

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  • Topological circuit of four-order voltage type inverter and control method thereof
  • Topological circuit of four-order voltage type inverter and control method thereof
  • Topological circuit of four-order voltage type inverter and control method thereof

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Embodiment Construction

[0059] The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0060] Such as Figure 1-2 As shown, a topological circuit of a four-stage voltage type inverter includes an input circuit (1), an inverter circuit (2) and an output circuit (3) sequentially connected from the input end to the output end.

[0061]The input circuit (1) includes a first switching device Q5, a second switching device Q6, a first diode D5, a second diode D6, a first inductor L3, a second inductor L4 and a first capacitor C3; The emitter of the first switching device Q5 is connected to the negative terminal of the DC input, and the collector is divided into two circuits, one of which is connected to the positive terminal of the DC input after being connected in series with the first inductor L3, and the other is connected to the negative terminal of the input circuit after being connected in series with the first diode...

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Abstract

The invention discloses a topological circuit of a four-order voltage type inverter and a control method thereof. The topological circuit comprises an input circuit, an inverter circuit and an outputcircuit which are sequentially connected from an input end to an output end. The input circuit comprises a first switching device Q5, a second switching device Q6, a first diode D5, a second diode D6,a first inductor L3, a second inductor L4 and a first capacitor C3. The inverter circuit commonly used by the UPS is improved, so that the output waveform of the inverter circuit is more stable, theharmonic content is reduced, and the switching loss is reduced; and meanwhile, a control method based on a state space model is adopted to control the inverter circuit, the convergence speed is high,the error is small, the robustness is high, and the method has positive guiding significance for engineering practice.

Description

technical field [0001] The invention relates to the technical field of inverters, in particular to a topology circuit of a fourth-order voltage type inverter and a control method thereof. Background technique [0002] With the development of power electronics technology, people have higher and higher requirements for power quality and safety. Therefore, it is urgent to seek a reliable power electronic processing device. As a power modulator between the DC terminal and the utility terminal, the voltage source inverter can convert DC power into AC power and provide the ideal output voltage and frequency for the output terminal. High-order voltage-source inverters have fast response and precise control, and are widely used in industrial fields. [0003] With the development of UPS technology, people have higher and higher requirements for the performance and stability of the inverter circuit. There is an urgent need to seek a new type of inverter circuit and inverter device ...

Claims

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Application Information

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IPC IPC(8): H02M7/483
CPCH02M7/483
Inventor 李大伟王宏图卢卓群田宝树郭鸷安然孟祥伟李广晨胡慧敏曲衷正贾宁王慧龙刘恬恬孙波
Owner CHAOYANG POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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