摘要
介绍了风光互补逆变器串联发电系统的拓扑结构,采用载波移相正弦波脉宽调制(CPS-SPWM)技术控制各个发电单元逆变器的通断,该调制方式下系统输出电压为多电平,且电压、电流的谐波含量大大降低。在功率预测和功率分配的基础上对发电系统进行能量管理,根据负载功率需求分别通过调节发电单元DC/DC变换器和蓄电池双向DC/DC变换器,控制各个发电单元以及蓄电池的输出功率,达到系统功率平衡控制的目的。仿真结果表明,该功率平衡控制策略能够保证系统功率平衡,满足系统在独立运行时负载功率跟踪控制的要求。
The scenery complementary cascaded multilevel inverter topology of the inverter was introduced using carrier phase shift pulse width modulation （CPS-SPWM） technology. The output voltage level could be increased and the voltage and current harmonic content could be greatly reduced. The power generation system was managed on the basis of power prediction and power al ocation. Scenery power units and battery output power were control ed by adjusting respectively scenery power generation unit DC/DC converter and battery two-way DC/DC converter. The purpose of system power balance control was achieved. Simulation results show that power balance of the system can be kept by the control strategy, and the system independent operation load power tracking control requirements can be satisfied.
出处
《电源技术》
CAS
CSCD
北大核心
2014年第11期2152-2154,2191,共4页
Chinese Journal of Power Sources
基金
国家自然科学基金项目(51047010)
甘肃省科技支撑计划(1204GKCA003)
