What the subject researching is that power energy should be measured with base wave ammeter to power systematic nonlinear user;And that it is high veracious by base wave AC parameters measurement method to those not bad contaminative.

A kind of fundamental wave equivalent circuit of dielectric-barrier discharge ozone generator powered by sinusoidal voltage is proposed.

In the end of 20th century,two main flowings were formed,including the algorithms based on motor s fundamental wave model with Park transformation and the high-frequency injection algorithms with high-frequency injection based on the motor s harmonic model.

This paper introduces a method of calibrating and processing angular speed fluctuation in NI sampling system—PXI-6281,it accomplishes the acquisition of angular speed fluctuation by distortion of signal,analyzing fundamental wave,high-order harmonic of angular speed feedback signal,and calculating the amplitude ratio of base-wave and high-order harmonic.

A power quadrilateral consists of apparent power S,active power P,reactive power Q,and distortion power N,or is composed of a fundamental harmonic power triangle and a harmonic power triangle.

In this paper, we make use of Fourier series to analyze the fundamental harmonic of the SPWM and make a conclusion that the larger carrier frequency ratio(N) is, the better resolution of modulation is.

Acquisition of fundamental waveforms based on neural network;

A new fundamental waveform electronic watt-hour meter was developed with its designed method proposed.

A new fundamental waveform electronic watt-hour meter is developed.

The PWM inverters are applied to produce fundamental currents, which are injected the multiple compensation secondary windings.

A practical 3 phase series active power filtering device is investigated based on the principle of the fundamental magnetic flux compensation.