磁增强正负电晕放电比较

磁增强电晕放电是指将小块永磁铁置于放电极附近形成一个局部磁场,从而使自由电子发生拉莫运动,在电晕区中自由电子通过拉莫运动提高空气分子的电离,使电晕放电电流增加。磁增强放电技术是一种新的有效的放电技术,具有广泛的应用前景。本文对磁增强正电晕和磁增强负电晕的独特性质进行了对比和分析。通过试验发现:在磁场磁通量密度一定的情况下,由于电场强度的增加所引起的放电电流的增加存在一个增长的最大值,即得出了电场和磁场的最佳搭配问题。

Comparison Between Magnetism Enhanced Positive and Negative Corona Discharges

The magnetic enhanced corona discharge involves a local magnetic field formed near the discharge electrode by using small permanent magnets so that the corona discharge current is enhanced due to the Larmor movements of free electrons, which enhance ionization of the gas molecules in the corona region. The magnetism enhancement electric discharge technology is an effective new electric discharge technology, with wide applications. The paper discusses the unique features of the magnetism enhanced positive and negative electronic coronas. It is found in experiments that with a fixed magnetic-flux density, with the increase of the electric-field intensity, the discharging current increases until a maximum value is reached, where have a good match of the electric field and the magnetic field.