CAJ | 학술논문

为了充分发挥交交变频原理优于交直交变频原理的优势,详细分析了交交变频技术的现状,提出了基于斩波控制的脉冲阻塞式交交变频原理.通过对传统交流调压电路的合理改造,利用单个功率器件实现了交交变频变压的目的.根据面积等效原理,对等脉宽控制方式进行了详细的理论分析,根据输出电压的不同频率和幅值,推导出了等脉宽控制方式中相应占空比的数学表达式.在PSPICE环境下进行了单相系统的等脉宽控制方式仿真研究,并设计了基于FPGA的系统主电路和控制电路.最后,采用VHDL完成了系统软件设计,并结合系统硬件电路完成了相关实验,获得了有效实验结果.仿真和实验结果一致,并且与文中的理论分析结果也完全一致,从而验证了提出的脉冲阻塞式斩波控制交交变频原理的正确性及可行性.
위료충분발휘교교변빈원리우우교직교변빈원리적우세,상세분석료교교변빈기술적현상,제출료기우참파공제적맥충조새식교교변빈원리.통과대전통교류조압전로적합리개조,이용단개공솔기건실현료교교변빈변압적목적.근거면적등효원리,대등맥관공제방식진행료상세적이론분석,근거수출전압적불동빈솔화폭치,추도출료등맥관공제방식중상응점공비적수학표체식.재PSPICE배경하진행료단상계통적등맥관공제방식방진연구,병설계료기우FPGA적계통주전로화공제전로.최후,채용VHDL완성료계통연건설계,병결합계통경건전로완성료상관실험,획득료유효실험결과.방진화실험결과일치,병차여문중적이론분석결과야완전일치,종이험증료제출적맥충조새식참파공제교교변빈원리적정학성급가행성.
To exert well the advantage that the principle of AC/AC converter was superior to AC/DC/AC converter,the situation of AC/AC converter technology was analyzed in detail, and the operation principle of AC/AC converter adopting plugged pulse fashion based on the chopping control was presented. The traditional circuit of AC voltage adjusted was altered properly, thus, the aim of AC/AC converter was realized which only required one power device in the system. The equal pulse width control method was theoretically analyzed according to the area equivalent rule, and the algorithmic expression of duty cycle was deduced from the different frequency and amplitude of anticipant output voltage. On the basis of the new principle and control method produced in the above contents, the single phase AC/AC converter system, which applied the equal pulse width control method, was simulated under the environment of PSPICE, then the main circuit based on the chip of FPGA and control circuit of the system were designed. Finally, the VHDL language was used to program the system, some experiments were done combined with the hardware circuit of system, and the valid results were obtained. The simulation results are in consistent with experimental ones, and are the same as those from the theory analysis. So the new principle presented in this paper is verified to be proper and feasible.