公开(公告)号：EP2290784A2

公开(公告)日：2011-03-02

申请号：EP10166273.2

申请日：2010-06-17

Applicant: STMicroelectronics S.r.l.

Inventor： Ruà, Francesco ,  Privitera, Salvatore Giuseppe ,  Signorelli, Tiziana Teresa ,  Pulvirenti, Francesco

IPC: H02J7/35 ,  G05F1/67

CPC classification number: H02J7/35 ,  Y02E10/566 ,  Y02E10/58 ,  Y10T307/593

Abstract: An outstandingly effective method of maximum power point tracking (MPPT) in operating a photovoltaic power plant that includes at least a DC-DC converter of the output voltage ( V PV ) of a single panel or of a plurality of series-parallel interconnected panels, having a power switch driven by a PWM control signal ( V PWM ) of variable duty-cycle (D) generated by a PWM control circuit, in discontinuous conduction mode (DCM) or continuous conduction mode (CCM) depending on the current load of the converter, is implemented by simple low cost analog circuits. The method does not require the use of any analog to digital conversion, digital processing or storage resources and requires only a single voltage sensor, in other words, no dissipative sensing resistance needs to be introduced.

Abstract translation: 一种用于操作光伏发电厂的最大功率点跟踪（MPPT）的非常有效的方法，该光伏发电厂至少包括单个面板或多个串并联互连面板的输出电压（V PV）的DC-DC转换器， 具有由PWM控制电路产生的可变占空比（D）的PWM控制信号（V PWM）驱动的电力开关，其具有不连续导通模式（DCM）或连续导通模式（CCM），这取决于电流负载的当前负载 转换器，由简单的低成本模拟电路实现。 该方法不需要使用任何模数转换，数字处理或存储资源，并且仅需要单个电压传感器，换句话说，不需要引入耗散的感测电阻。