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首页> 外文期刊>Research journal of applied science, engineering and technology >The Design of AC Regulated Power Supply Based on PWM Chopping Series Compensation Technology
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The Design of AC Regulated Power Supply Based on PWM Chopping Series Compensation Technology

机译：基于PWM斩波串联补偿技术的交流稳压电源设计。

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摘要

Area for the fast load variation, the power grid voltage fluctuations is very serious. In order to supply stable voltage for the small power user, a unipolar chopping compensation AC regulated power supply is designed based on bidirectional H PWM chopping bridge which can realize the bidirectional flow of energy when the voltage is boosted and step-down. It adopts voltage feedback control. The initial chopping duty ratio is determined by proportion regulation according to difference of the input voltage and the standard voltage; it can improve the voltage response speed. The initial duty ratio is corrected according to digital PID regulation based on the output voltage feedback, which ensures the stability of the output voltage. The STC12C5A62AD single chip is adopted for the regulated power supply that have 8 AD inputs and PWM output, it make the system structure simple. The 12.8 kHz sampling frequency and high precision voltage sampling technology ensures the precision of sampling. The 10 kHz frequency of the chopper reduces the harmonic component and it is easy to filter. Experimental results show that dynamic response speed of the regulated power supply is fast and precision of it is high. It has great practical value.
机译：对于快速负荷变化的区域，电网电压波动非常严重。为了给小功率用户提供稳定的电压，设计了一种基于双向H PWM斩波桥的单极性斩波补偿交流稳压电源，当升压和降压时可以实现双向能量流。采用电压反馈控制。初始斩波占空比根据输入电压与标准电压之差，通过比例调节来确定。可以提高电压响应速度。初始占空比根据输出电压反馈根据数字PID调节进行校正，从而确保了输出电压的稳定性。稳压电源采用STC12C5A62AD单片机，具有8个AD输入和PWM输出，使系统结构简单。 12.8 kHz采样频率和高精度电压采样技术确保了采样的精度。斩波器的10 kHz频率降低了谐波分量，并且易于滤波。实验结果表明，稳压电源的动态响应速度快，精度高。具有很大的实用价值。

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