仿真和实验结果表明：所提出的变换器输入电流和输出电压为正弦，谐波小且输入功率因数可控，并可实现零电压换流。
Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation.
实验结果证明了提出的技术能有效降低开关变换器的谐波峰值和应用于开关变换器的可行性。
The experimental results have confirmed the advantage of the proposed method and its applicability for switching converters.
分析了变换器低频电感电流的次谐波振荡问题，并提出了抑制措施，实验验证了理论分析的正确性。
Especially, the sub-harmonic oscillation of the low frequency inductor current is analyzed and the method to solve this problem is proposed.
传统AC/DC变换器往往具有电流谐波高、网络功率因数低等缺点。
There are many disadvantages for the conventional AC/DC convert, such as higher current harmonic and lower power factor.
电流模pwm集成dc - DC变换器设计中，为了防止亚谐波振荡而普遍采用的斜坡补偿，会在占空比较大时严重影响芯片的带载能力。
In the design of current-mode PWM DC-DC converters, the slope compensation method widely used to prevent sub-harmonic oscillation can significantly weaken the load capacity under a high duty cycle.
SPWM变换器中的死区设置使变换器输出电压谐波含量增加、电压利用率和可靠性降低。
The dead time control in SPWM converter increases the harmonic component in voltage output and decreases the voltage utilization and reliability of converters.
为了简化ac - DC - AC变换器复杂的谐波计算过程，采用直接谐波计算对变换器进行了谐波分析。
A direct harmonic analysis approach for AC-DC-AC conversion system was presented to simplify the complicated harmonic calculation process.
在开关频率较低的情况下，大功率PWM变换器的谐波可能会更大，并对电力电子设备造成损坏或产生电磁干扰影响通讯。
The harmonic distortions of the high power PWM converters increase more with low switching frequency, which may destroy the devices used in the system and result in electromagnetic interference (EMI).
在电力变换器中，不平衡会产生不希望的直流波动以及交流侧无特征的谐波。
In power converters, unbalances generate undesirable DC ripple and non characteristical harmonics in the AC side.
介绍了PWM开关功率变换器电路的统一建模方法，并将谐波分析方法应用于电路分析中。
This paper introduces the method of unified modeling for PWM switched converter, and draws the analytic method of harmonic balance into the analysis of the circuit.
这种调制方法使用基于人工智能优化算法产生脉冲信号的调制方法，对大功率三相PWM变换器进行谐波优化。
This modulation control method applies modern heuristic optimization technique to generate PWM signals which can achieve harmonic optimization of three phase high power PWM converters.
传统二极管箝位变换器的电压变化率和共模电压较高，且波形谐波含量较大，使得输出滤波器的设计变得复杂。
Traditional diode-clamped converters have high voltage variation rate, common-mode voltage and harmonics, which make the design of its output filter complicated.
传统二极管箝位变换器的电压变化率和共模电压较高，且波形谐波含量较大，使得输出滤波器的设计变得复杂。
Traditional diode-clamped converters have high voltage variation rate, common-mode voltage and harmonics, which make the design of its output filter complicated.
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