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CN105186519A 一种采用相数倍增法消除谐波的方法 无效 - 撤回

一种采用相数倍增法消除谐波的方法
摘要：
本发明提供一种采用相数倍增法消除谐波的方法。其技术方案为：高次谐波都是一些正弦交流量，其大小与相位有关，让次数相同，相位相反的谐波相互抵消，分析推导证明，对于2个三相系统，如果它们的相位相差30°时，可以消除5，7，17，19，29，31次谐波，相差15°的4组三相系统，可以消除11，13，35，37次谐波，因此，用2个整流桥组成的换流器分别接在有相位移30°的三相电路上，组成12脉冲的换流器可消除5，7，17，19，29，31次谐波。本发明的有益效果：采用上述方法后，消除了谐波，保证了供电质量，同时节约了电能。
摘要（英）：

The present invention provides a method of adopting a phase number multiplication method to eliminate harmonic. The technical scheme is that the higher harmonics are all sine AC components, the sizes of the higher harmonics are related with the phases, and the harmonics of which the times are same and the phases are reverse can offset with each other; the analytical derivation proves that for two three-phase systems, if the phase difference of the two systems is 30 degrees, the fifth, the seventh, the seventeeth, the nineteenth, the twenty-ninth and the thirty-first harmonics can be eliminated; and for four sets of three-phase system of which the phase difference is 15 degrees, the eleventh, the thirteenth, the thirty-fifth and the thirty-seventh harmonics can be eliminated, so that when a transverter composed of two rectifier bridges is connected with the three-phase circuits of which the phase displacement is 30 degrees separately to form a 12-pulse transverter, the fifth, the seventh, the seventeeth, the nineteenth, the twenty-ninth and the thirty-first harmonics can be eliminated. The beneficial effects of the present invention are that: by the above method, the harmonics are eliminated, the power supply quality is guaranteed, at the same time, the electric energy is saved.

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