System and method for detecting control box of AC power supply system
A technology of AC power supply and control box, applied in the direction of frequency measurement device, etc., can solve the problems of high requirements of test equipment, complex operation, high energy consumption, etc., and achieve the effect of low requirements, simple operation and low energy consumption
Inactive Publication Date: 2016-02-03
CHINA HANGFA SOUTH IND CO LTD
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[0007] This application provides a detection system and method for the control box of an AC power supply system, which solves the problems of high requirements for testing equipment, complicated operation, high energy consumption, and low efficiency when testing the control box
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[0024] The AC motor of the aircraft AC power system mainly outputs two signals, one is the main power signal, and the other is the auxiliary exciter signal. The frequencies of the two signals are proportional, and the proportional coefficient is determined by the characteristics of the AC motor itself. The current transformer of the AC power system outputs a voltage signal (current transformer signal) with the same frequency as the main power signal.
[0025] The relationship between the voltage of the main power supply signal and the voltage of the current transformer signal is Umain: Umutual=FR, where F is the mutual inductance coefficient of the current transformer, and R is the load resistance connected to the main power supply of the AC motor.
[0026] The adjustment performance of the control box refers to: the control box samples the main power signal and the auxiliary exciter signal output by the AC motor, and after processing by the internal circuit, forms an excitatio...
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The present invention provides a system and method for detecting a control box of an AC power supply system. The system for detecting the control box of the AC power supply system includes a programmable AC power supply, a signal adapter, and a testing instrument. The programmable AC power supply is used to simulate a primary power supply signal, a pilot exciter signal, and a current transformer signal by utilizing the programmable AC power supply, then the signals are outputted to the control box, and an adjusting signal outputted by the control box is acquired through the testing instrument. The adjusting signal outputted by the control box is compared with a standard value after the change of parameters of one or more signals of the primary power supply signal, the pilot exciter signal, and the current transformer signal so that the adjusting performance of the control box is detected. The system for detecting the control box of the AC power supply system is convenient to operate, and the method for detecting the control box of the AC power supply system is simple. The system and method for detecting the control box of the AC power supply system has low requirements for testing equipment, less consumption and high efficiency.
Description
technical field [0001] The present application relates to the field of aircraft equipment detection, in particular to a detection system and method for an AC power system control box of an aircraft. Background technique [0002] The AC power system in an aircraft is generally composed of an AC motor, a control box and a current transformer, and its function is to supply power to airborne equipment. The control box is the core component of the system. It is used to adjust the output voltage of the AC motor, protect the generator and the electrical equipment on the carrier aircraft. It directly determines the power supply status of the equipment on the aircraft and is an important guarantee for the normal operation of the electrical equipment. . [0003] At present, the detection method of the control box generally adopts the system detection method, that is, a special test bench is built, and a physical AC motor and a current transformer are used for testing. There are foll...
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Inventor 高昆林开平吴志平李明戎元昌阳吾明
Owner CHINA HANGFA SOUTH IND CO LTD