STEVAL-ISV003V1 250 W microinverter for plug-in PV panels demonstration board
The STEVAL-ISV003V1 is a demonstration board which implements the microinverter concept and is designed to optimize the power production of each single solar panel by means of DC/AC conversion. The conversion system is capable of both grid synchronization and Maximum Power Point Tracking (MPPT) thanks to the use of an advanced control algorithm implemented in the 32-bit STM32 microcontroller. The MPPT function is based on the perturb and observe (P & O) concept which seeks the best operating point of the panel, thus maximizing the energy produced under any environmental condition. The grid synchronization algorithm has the advantage over standard solutions of a decoupled control of active and reactive power. The STEVAL-ISV003V1 demonstration board uses a high-frequency (HF) isolated DC/DC converter with interleaved current and an optimized full-bridge DC/AC inverter. The typical solar panel voltage is first stepped up to about 400 V and then converted into AC to create a sinusoidal output.
An LED display provides a user-friendly interface for the end user which allows monitoring and/or modifying some of the main operating parameters. Two modes of operation are available and can be selected to allow either open-loop operation or closed-loop operation in synchronization with the grid.
In open-loop mode the sinusoidal reference is created internally by means of a standard lookup table, while in closed-loop mode, a sinusoidal voltage feedback, proportional to the grid voltage, is used. The system can be connected to either a 50 Hz or 60 Hz network, depending on local requirements. Finally, the RS-232 interface can be used for serial data transfer of specified voltage, current and current signals.
技术特性
- Input voltage range from 18 V to 45 V
- Output voltage range from 110 V to 240 V AC, 50/60 Hz
- Grid connection algorithm and MPPT capability
- Digital control section managed by the STM32
- Reactive power management
- RS-232 for communication
- RoHS compliant
| 功能框图
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STEVAL-ISV003V1 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEVAL-ISV003V1 |
Preview |
|
1000 |
|
|
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DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISV003V1 : DB1458: 250 W microinverter for plug-in PV panels demonstration board |
2 |
553KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2787: Monolithic VR demonstration board for chipset and DDR2/3 supply for ultramobile PC (UMPC) applications |
1 |
2594KB |
| AN2936: 10 W SMPS with HV power MOSFET and the L6565 for three-phase industrial applications |
1 |
303KB |
BILL OF MATERIALS
SCHEMATIC PACKS
PCB LAYOUTS
