Power one PVI-6000 6KW高效太阳能光伏电池逆变方案

Power one 公司的PVI-6000是6KW高效太阳能光伏电池逆变器,能把太阳能光伏电池阵列所产生的直流电转换成交流电,效率高达97%.交流输出电压默认值是240V,可选择208V或227V,交流电流可高达24A. PVI-6000采用最大功率点跟踪(MPPT),两个输入端完全独立,具有多种保护特性,并可向电网送电.本文介绍了PVI-600的主要特性,性能指标以及光伏电池阵列的组成, 光伏电压系统框图, AURORA逆变器方框图, 光伏电压系统连接框图以及系统数据传输框图, 多个逆变器连接图和逆变器编程流程图等.

High-EffiCiency 5kW to 6kW Inverters
Aurora® grid-tie transformerless inverters offer a unique combination of ultra-high efficiencies, installer-friendly designs, long service life, and competitive initial acquisition costs; significantly increasing return on investment in solar-power installations.

Industry-Leading Features and Performance
High efficiencies deliver more energy – up to 97% (96,5 CEC).
Two inputs with independent MPPTs, optimize power from multiple arrays oriented in different directions.
Compact size and high power density: 6000W max of output power in a box just 38 5/8” x 12 13/16 x 7 11/16”
Unmatched Applications Flexibility
Full-rated power available up to 50°C ambient temperature.
Dual input sections with parallel option, with independent high speed MPPTs, optimize energy harvesting from multiple arrays oriented in different directions.
Wide MPPT operating range: 90 to 580VDC
Field-Proven Reliability
IP65 (NEMA 4) rated enclosure withstands the harshest environmental conditions.
Front-mounted heat sink resists contamination, enhancing cooling and increasing reliability and long-term efficiency.
Grid-connected operation according to international standards, UL1741 & CSA-C22.2 N.107.1-01
Five-year warranty, optionally extendable to twelve years.
Installer Friendly
Reverse-polarity protection minimizes potential damage caused by miswiring during installation.
Front-panel mounted LCD display provides real-time updates for all critical operating parameters.
RS-485 and USB communications interfaces.
Integrated DC switch available in compliance with NEC Standard, Article 690 “Solar Photovoltaic System” (USA)
Anti islanding protection
High Efficiencies Across a Broad Range of Operating Conditions
PVI-5000 and PVI-6000 inverters provide 208/240/277 Vac selectable outputs, at up to 97% efficiency (CEC96.5). The graph to the right demonstrates the high efficiencies, across a continuous range of input voltages and load conditions, for the PVI-6000. The graphs below depicts the industry-leading performance of all models at three discrete MPPT-voltage reference points, and a continuous range of load conditions.



图1.光伏电池阵列的组成



图2.简化的光伏电压系统框图



图3.AURORA逆变器方框图

The block diagram shows an AURORA PVI-6000-OUTD with two independent input DC-DC converters; each converter is dedicated to a separate array with independent Maximum Power Point Tracking (MPPT) control. This means that the two arrays can be installed in different positions and orientations. Each array is controlled by an MPPT control circuit.
Thanks to its high efficiency and generously sized heat sink, the AURORA inverter provides maximum power operation in a broad range of ambient temperatures.
The inverter is controlled by two independent DSPs (Digital Signal Processors) and one central microprocessor.
This way, grid connection is controlled by two independent computers in full compliance with electrical power supply and safety regulations.



图4.光伏电压系统连接框图



图5.数据传输框图



图6.多个逆变器连接图



图7.逆变器编程流程图

下表为逆变器PVI-5000和PVI-6000性能指标:







图8.逆变器电方框图



图9.PVI-5000/PVI-6000方框图