harmonics造句
121. To design an L-band low harmonics distortion power amplifier, this paper simulates and optimizes linear and nonlinear circuits.
122. Traditional diode-clamped converters have high voltage variation rate, common-mode voltage and harmonics, which make the design of its output filter complicated.
123. The more harmonics, the more rich and tonally interesting the wave becomes.
124. So, it will be reasonable and effective to analyze power harmonics with the probabilistic method.
125. In this paper the barotropic vorticity equation, expanded with spherical harmonics is integrated.
126. And by the means of simulation, the error range of the two algorithms to the frequencies, amplitude and phase of all times harmonics is given, which is valuable to the power harmonic analysis.
127. At the same time, an auxiliary repetitive controller is added to eliminate periodic current harmonics caused by switching.
128. This paper was directed against analysing of harmonics to electric net and electric equipment to do harm and find out harmonic filter method.
129. The results show that the amplitude of fundamental voltage linearly increases with the modulation factor and that the harmonics of the output voltage are markedly reduced.
130. Large coal mine has adopted many different types of converter and large scale changing load, causes the power distribution grid with plenty of harmonics and lack of reactive power.
131. The dependent variables are expanded in series of spherical harmonics truncated rhomboidally at wavenumber 15.
132. Then, the paper analyzes the excitation control of VSCF wind power generation. The dual PWM converters have better input and output performances, less harmonics and bidirectional energy-transform.
133. Higher harmonics may also be of importance in practical deflection system analysis.
134. We have stated a rule for consonance in terms of the coincidence of harmonics.
135. An average-current-mode control is employed in the rectifier side of proposed converter to detect the transition time and synthesize a suitable low harmonics sinusoidal waveform for the input current.
136. Because of its nonlinear characteristics, the APU output current wave contains much more harmonics.
137. The SAPF prototype can compensate harmonics and reactive well under varies load conditions, especially in the case of a distorted or unbalanced current of power supply.
138. Comparision with the ECRM of cylindrical waveguide shows that it has some advantage and characters, especially for operating at high harmonics.
139. Theinfluence of electron energy spread on gain and efficiency of higher harmonics is also studied.
140. In addition, the ray effect in the spherical harmonics approximation mitigates with increasing optical thickness within gray medium.
141. The odd harmonics increment mainly results from the diode - conduction asymmetry.
142. The results show that the model can simulate the higher harmonics generated on the front slope and the wave decomposition behind the breakwater to analyze the strongly nonlinear wave characteristics.
143. This dissertation pointed out some problems in existing harmonics detection used in three-phase unbalanced system by investigating and studying different kinds of harmonics detection methods.
144. Finally, the fundamental frequency estimation under different PQ disturbances condition , such as harmonics , voltage.
145. This paper studies and designs a single tuned filter based on a controllable reactor, it could filter odd harmonics such as 3rd or 5th or 7th and so on.
146. Power system equipment and loads which are more sensitive to harmonics.
147. The total antisymmetric basis functions are constructed for irreducible representation of S3 permutation group from nine- dimensional hyperspherical harmonics.
148. Whittle has also managed to tease out the fundamental (a physics term that describes a component of lowest frequency of a periodic wave) and harmonics of the big bang.
149. According as the expanding of spherical harmonics of the gravitational potential, the radial correction formula and the estimating error model are given.
150. The influence of harmonics on electric energy measurement is discussed.
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