A DC power supply system stability device and method based on virtual resistance compensation

A technology of power supply system and virtual resistor, which is applied in the field of aviation electrical system, can solve the problems of large weight and volume of equipment, low power density, and no consideration of system stability, so as to achieve the effect of maintaining the stability of power supply system.

Inactive Publication Date: 2018-12-18
BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the design of the power system of traditional aircraft, only the voltage, current, capacity, power quality and other performance indicators of the equipment are considered. In order to prevent the occurrence of oscillation instability, generators and converters with large redundancy are used as primary and secondary power sources. , which makes the design margin of

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  • A DC power supply system stability device and method based on virtual resistance compensation
  • A DC power supply system stability device and method based on virtual resistance compensation
  • A DC power supply system stability device and method based on virtual resistance compensation

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0037] The technical solution proposed by this application takes the future multi-electric aircraft DC power supply architecture as the analysis object, first gives the object model, and then based on the principle of impedance matching, designs and uses AC current reference signal compensation with low-pass filter to improve system stability.

[0038] Such as figure 1 As shown, the three-stage synchronous motor includes...

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Abstract

A DC power supply system stability compensation device and method based on virtual resistance comprise a three-stage synchronous motor, a rectifier and a rectifier control unit; The three-stage synchronous motor is connected with a rectifier, and the alternating current emitted by the three-stage synchronous motor is changed into direct current after passing through the rectifier and is loaded onboth ends of the load to supply power for the load. The rectifier control unit is connected with the rectifier, and the rectifier control unit includes a compensation signal module, and the compensation signal module generates a dummy resistance equivalent compensation AC voltage signal to be compensated to the rectifier control unit. The device and the method can maintain the stability of the power supply system when the load of the DC power supply system is suddenly increased, and the instability phenomenon does not occur.

Description

technical field [0001] The invention relates to the field of aviation electrical systems, in particular to a device and method for compensating the stability of a DC power supply system based on virtual resistance. Background technique [0002] Power system stability analysis is a necessary part of the overall design of aircraft power system. At present, with the increase of aircraft on-board electrical equipment, especially the extensive use of power electronic converters and motor-driven equipment, the electrical load capacity, type, and grid complexity of multi-electric aircraft are greatly improved compared with traditional aircraft power systems. In multi-electric aircraft, a large number of new electrical loads, such as electric environmental control, electric actuation, and electric anti-icing, are essentially motors controlled by power electronic converters or resistive loads controlled by power electronic converters. The load of a single power electronic converter ...

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Application Information

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IPC IPC(8): H02P9/38H02P9/48H02P21/16H02P21/14
CPCH02P9/38H02P9/48H02P21/141H02P21/16
Inventor 马跃回彦年康元丽章玄许烈王奎
Owner BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC
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