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Accurate and fast detection of harmonics is the basis for active filters to work regularly. Propose an improved generalized IP-IQ harmonic detection algorithm. Analyzed generalized IP-IQ harmonic detection algorithm, pointed out two advantages of this algorithm: It can separate any order of harmonic and detect harmonic correctly even if the voltage of grid is distorted. But the generalized IP-IQ algorithm...
In response to industry power motor cannot directly starting and stopping issues, a new type intelligent design of soft starter is proposed in this paper. Intelligent soft starter design principles based on 89LV52 single chip is articulated. The hardware circuit design, software flow design and test data analysis are given in details. By producting in Zibo Galaxy high-technology development co., Ltd...
In response to industry power motor cannot directly starting and stopping issues, a high power motor intelligent protection controller based on PIC singlechip is proposed in this paper. Intelligent soft starter design principles based on PIC singlechip is articulated. The hardware circuit design, software flow design and test data analysis are given in details. By producting in Zibo Galaxy high-technology...
The principle of a new type field irrigation intelligent controller that based on on AT89LV52 singlechip is introduced in this paper. The low pressure electrical energy reactive compensation control and the management integration of IC card prepaid multi-user three-phase watt-hour meter is realized by the controller. The energy conservation control using the low pressure electrical energy reactive...
The pricinple of field irrigation energy conservation and saving water integration control system is introduced in this paper. The low pressure electrical energy reactive compensation control and the management integration of IC card prepaid multi-user three-phase watt-hour meter is realized in the system. The energy conservation control using the low pressure electrical energy reactive compensation,...
This paper introduces the multiple sensing mechanism of online moisture test for grain and improved BP neural network, and gives hardware structure of moisture test system for grain centering on TMS320F2812. In this paper, dielectric loss factor is measured by the method of orthogonal separation on phase-sensitive detection. Though measuring three parameters of dielectric loss factor, power fluctuations...
The multiple sensing mechanism of online moisture test for corn and improved BP neural network was introduced, and hardware structure of moisture test system for corn centering on TMS320F2812 was given. In this paper, dielectric loss factor is measured by the method of orthogonal separation on phase-sensitive detection. Though measuring three parameters of dielectric loss factor, power fluctuations...
With the development of the society, the demand of electric power becomes bigger and bigger. The phenomenon of unbalanced electricity in different time is worse and worse. In order to adjust electric power burthen with reason and save energy, we put forward the design of a novel multi-rate three-phase watt-hour meter. The design principle of a novel multi-rate three-phase watt-hour meter based on...
In order to adjust electric power burthen with reason and save energy, we put forward the design of a novel multi-rate three-phase watt-hour meter aiming at the phenomena of bigger demand of electric power and unbalanced electricity in different time. The design principle of a novel multi-rate three-phase watt-hour meter based on AT89S52 is proposed in this paper. The designs of hardware and software...
This paper introduces the design principle of a new insulation monitoring device on DC system based on AT89S52. The method of measuring insulation resistance between ground and DC power supply using switch-controlled is proposed, by which the state of combination switch can be changed though programming, a variety of effective circuit structure can be produced, linear equations of voltage sampling...
The design principle of a new insulation monitoring device on DC system based on AT89LV52 has proposed in this paper. The method of measuring insulation resistance between ground and DC power supply using switch-controlled is introduced, by which the state of combination switch can be changed though programming, a variety of effective circuit structure can be produced, linear equations of voltage...
This paper introduces the multiple sensing mechanism of online moisture test for grain and improved BP neural network. Using BP neural network to construct multi-input single-output model, applying gradient descent method with forgetting factor for parameters adjustment of BP neural network, utilizing the nonlinear mapping ability and learning generalization ability of the BP neural network, and using...
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