【作者】 刘真；

【导师】 黄守道；

【作者基本信息】 湖南大学 ， 电力电子与电力传动， 2006， 硕士

【摘要】 随着社会发展,越是信息化、现代化,就越依赖于电力,一旦中断供电,将造成重大的事故或经济损失。而在市电中断供电时,高性能应急电源能在各种场合为设备提供电能。因此,研究高性能应急电源有着重要意义。本文对应急电源系统的关键技术进行了较为全面的从理论到实践的深入研究,为今后高性能应急电源的产品化奠定了扎实的理论基础,并积累了一定的实践经验。论文首先较为全面地介绍了应急电源的发展现状和应急电源的发展趋势,通过比较柴油发电机组、UPS和EPS,得出研究高性能应急电源具有重要意义的结论。接着具体介绍了应急电源的工作原理和设计要求,详细制定了全数字式6kW三相应急电源的设计方案。在此基础上具体介绍了应急电源主电路的设计过程。在建立三相电压型PWM逆变器在两相同步旋转坐标系下的数学模型的基础上,提出了一种三相电压型PWM逆变器基于电压电流双闭环的控制方法,利用电压外环实现对输出电压的稳定控制,电流内环实现对输出电流的控制,仿真证明该方法有效地改善了系统的动态响应及抗干扰能力。然后给出了基于DSP的全数字式6kW三相应急电源的硬件实现方法,结合设计出来的硬件,编制了基本的DSP底层程序流程。在程序中实现模拟量采样,PWM产生,电压控制环和电流控制环等功能。本文最后介绍了系统试验情况,对于实验过程出现的问题进行了分析与总结,提出了解决问题的方案。更多还原

【Abstract】 With the rapid development of society, the more modern and informational, the more relying on the electric power. It will cause great accident or economic losses in the event of power interruption. The Emergency Power Supply can offer the electric energy for equipment in various kinds of occasions while the power interruption. So it is very important to research the high-powered Emergency Power Supply.The paper has done all-around study on the key technology of EPS from theory to practice and established stability theoretical and practical foundation for continuing study work.Firstly, the paper roundly introduced the sorts of EPS contain their developping status and developping direction. Via comparing diesel motor, UPS and EPS, the paper drew out that it had great importance to research EPS.Secondly, the paper laboured its working principle and design requests, and made its design scheme. Based on the collective structure of EPS, the paper particularly introduced the design process of the main circuit.The paper analyzed the basic theory and mathematic model of three phase voltage PWM inverter and proposed one kind of control strategy based on the voltage-current double-loop. It used the exterior loop to control the voltage the EPS outputted, and used the inner loop to control the current. Simulation testified that the control method could improve the dynamic response character and interference rejection ability. Thirdly, the paper detailedly explained the whole system’s hardware structure based on DSP, and made the flow chart of the software which realized the PWM occur, the current control loop and the voltage loop.Lastly, the paper introduced the experimentation, analyzed the problems and gave its resolve methods.更多还原