Resarch Developemtn of the parallel power processed solar cell power supply system using the bidirectional power converter

1.提出了一种新型的Solat电池直流电源系统，该系统采用Boost式双向DC-DC转换器和太阳电池阵列输出功率并行处理的方式。新系统在总功率效率上优于传统系统。提出了一种新型的太阳能电池供电系统最大功率跟踪器，该跟踪器以监测太阳电池的短路电流作为参考输入，检测出主阵的最大功率点。从理论和实验结果两方面进行了分析。结果表明，新的最大功率跟踪器具有较高的跟踪运算性能。提出了一种新型Solat电池交流供电系统，该系统由新型双向PWM逆变器、太阳能电池阵列、蓄电池、商用交流线路和交流负载组成。为了实现太阳能电池供电系统的高可靠性，对DC-DC转换器的数字控制电路进行了研究。为了改善变流器在过流限制模式下的动态特性，提出了一种既有积分补偿器又有导数补偿器的新型过流控制电路。

1. A new solat cell dc power supply system is presented, in which the boost type bidirectional dc-dc converter and the solar array output power is processed in paralled. The new system is superior to the conventional one in the total power efficiency.2. A new maximum power tracker of the solar cell power supply system is presented, in which the short circuit current of the monitor solar cell is employed as a reference input to detect the maximum power point og the main solar array. From the theoretical and experimental resuts. it is revealed that the new maximum power tracker has a high degree of tracking operation performance.3. A new solat cell ac power supply system is presented, which is composed of the new bidirectional pwm inverter, the solar array, the storage battery, the commercial ac line and ac load.4. A digital control circuit of the dc-dc converter is examined, which is used in order to realize the high reliability of the solar cell power supply system.5. A new overcurrent limiting control circuit is presented, which is composed of not only the intergral compensator but also the derivative one in order to improve the dynamic characteristics in the overcurent limited mode of the converter.