This article proposed the technology of estimation common-mode noise with the energy of switching cycle and FPGA as the main component.

本文提出了用FPGA作为主要器件、以能量为指标的共模噪声评估技术。

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The duty ratios of switches in each switching cycle can be directly obtained by simple calculation using two phases source currents and dc bus capacitor voltage.

只需检测两相电源电流和直流侧电容电压，通过简单计算就可直接求出每个开关周期内各开关的占空比。

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The theory research results of one cycle controlled switching power amplifier show that the output signal follow the input signal linearly, and the control performance is decided by output filter.

理论分析结果表明，单周控制开关功率放大器的输出信号与输入信号成线性变化关系，其控制性能由输出滤波器决定。

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"The numbers suggest that as the economy changes and moves from one cycle to another, a lot of companies are switching gears, " says John Challenger, the firm's chief executive.

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