Operation principle of harmonic balance method is explained through the input of single frequency and multiple harmonic.
通过单频输入和多谐波输入说明了谐波平衡法的工作原理。
Harmonic measure method is the key of the measurement. In this paper, the harmonic measure method which based on the multiple frequency rotate transform theory is researched and analyzed.
谐波测量方法是谐波测量的核心环节，本文对基于倍频旋转变换理论的谐波测量方法进行了研究分析。
The incremental harmonic balance method was extended to analyze the flutter of systems with multiple structural strong nonlinearities.
扩展到系统的多个结构强非线性颤振分析的增量谐波平衡法。
The harmonic compensation currents proportional to the harmonic current in the primary winding, which is detected real-timely, are injected to the multiple secondary winding of the transformer.
实时检测变压器原方绕组的谐波电流，通过逆变器产生与原方绕组谐波电流成比例的谐波补偿电流注入变压器副方多补偿绕组中。
Under the simple harmonic vibration, the stable forced vibration of multiple-degree-of-freedom system is analysed by using ANSYS software.
运用ANSYS软件分析多自由度系统在简谐激励作用下的稳态受迫振动。
For multiple back-to-back four-quadrant converter, a modified SPWM technique is combined with carrier phase-shifting control, which reduces current harmonic and enhances power exchange ability.
针对多重化的背靠背四象限变流器，采用了载波移相控制与改进的SPWM调制相结合的方法，减小了电流谐波，提高了功率交换能力。
For multiple back-to-back four-quadrant converter, a modified SPWM technique is combined with carrier phase-shifting control, which reduces current harmonic and enhances power exchange ability.
针对多重化的背靠背四象限变流器，采用了载波移相控制与改进的SPWM调制相结合的方法，减小了电流谐波，提高了功率交换能力。
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