Solar Inverter Power Solution

Application

Description

High-efficiency solar inverter solution using Xinleineng SiC and IGBT modules for residential and commercial PV systems.

Core Advantages

SiC Technology Advantage Utilizes Xinleineng SiC MOSFET modules for 98.5%+ peak efficiency and reduced cooling requirements
Wide MPPT Range Supports 200-1000V DC input with optimized maximum power point tracking algorithm
Grid Compliance Meets IEEE 1547 and IEC 61727 standards with reactive power support and anti-islanding protection
Compact Design High power density enabled by high-frequency SiC switching and reduced passive components
25-Year Lifetime Designed for long-term reliability with film capacitors and robust thermal management

Recommended Bill of Materials (BOM)

Item Part Number Description Quantity Datasheet
1 📄 Download
2 📄 Download

Applications

Residential solar systems
Commercial PV installations
Energy storage systems
Grid-tie inverters
Off-grid systems
Solar pumping

Technical Specifications

power Range
5kW - 100kW
efficiency
>96%
switching Frequency
5-20kHz

Customer Success Stories

Renewable Energy |

Challenge

A solar EPC company needed a 50kW three-phase inverter solution for commercial rooftop installations. Requirements included 98.5%+ efficiency, wide MPPT voltage range (250-850V), compact size for rooftop mounting, and compliance with local grid codes including reactive power support.

Solution

Designed a three-phase inverter using XLN40M120-SiC modules for the DC-AC stage and XLN-RECT35A modules for the active front-end boost converter. The SiC-based design achieved target efficiency while reducing heatsink size by 50% compared to IGBT alternatives.

Results

  • Peak efficiency of 98.7% measured at full load
  • 50% reduction in heatsink volume compared to previous IGBT design
  • MPPT efficiency >99.5% across full voltage range
  • THD <1.5% at rated power, meeting strict grid codes
  • Passed all grid compliance tests including ride-through

Energy Storage |

Challenge

An energy storage company needed a 10kW hybrid inverter for residential battery systems. The inverter needed to support both solar PV input and battery bidirectional operation, with silent operation (no fans) and high efficiency across wide load range.

Solution

Developed a hybrid inverter using XLN80M120-SiC modules for the bidirectional DC-AC stage. The high efficiency of SiC enabled passive cooling up to 8kW, with a low-speed fan only activating above 8kW or high ambient temperatures.

Results

  • Round-trip efficiency (battery to AC) of 96.5%
  • Silent operation below 8kW output (no fans)
  • European efficiency of 97.8% across typical load profile
  • Compact wall-mount design (60% smaller than competitors)
  • Zero fan noise complaints from homeowners

FAE Expert Insights

S

Senior FAE

Applications Engineer

10+ years

Professional Insights

Key considerations: Optimized for target applications; Integrated design reduces BOM cost; Comprehensive technical support available.

Key Takeaways

  • Optimized for target applications
  • Integrated design reduces BOM cost
  • Comprehensive technical support available

Decision Framework

Decision Framework
Steps:
  1. Evaluate requirements
  2. Compare solutions
  3. Consult FAE

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Frequently Asked Questions

What efficiency levels can be achieved with this solar inverter solution?

Using Xinleineng SiC modules in the DC-AC inverter stage, peak efficiency reaches 98.5% with CEC weighted efficiency above 98%. The low switching losses of SiC technology enable high switching frequencies (up to 50kHz) while maintaining high efficiency, reducing magnetic component size and cost.

Contact our FAE team for detailed application guidance.

What MPPT voltage range is supported by this solution?

The solution supports wide MPPT voltage ranges: 200-850VDC for residential single-phase inverters and 200-1000VDC for commercial three-phase inverters. Using 1200V rated power modules ensures safe operation with adequate voltage margin even at maximum DC input voltage and temperature.

Contact our FAE team for detailed application guidance.

How does the solution handle reactive power and grid support functions?

The inverter solution supports reactive power injection (leading and lagging) from 0.8 leading to 0.8 lagging power factor. Grid support functions include active anti-islanding, voltage ride-through, frequency ride-through, and dynamic reactive power support per IEEE 1547 and IEC 61727 standards. Fast current control loops enable rapid response to grid voltage changes.

Contact our FAE team for detailed application guidance.

What are the thermal design considerations for outdoor installation?

For outdoor installations, the solution uses IP65-rated enclosures with passive cooling (no fans) for residential units or forced air cooling with IP54-rated fans for commercial units. Power modules are derated above 45C ambient temperature. Heatsinks are anodized aluminum with thermal interface materials rated for 25-year outdoor exposure.

Contact our FAE team for detailed application guidance.

Can this solution be used for energy storage inverter applications?

Yes, with modifications to the control software, the solution supports bidirectional power flow for battery energy storage systems (BESS). The same SiC and IGBT power stages can operate in both inverter (DC to AC) and rectifier (AC to DC) modes. Battery voltage ranges of 400-800VDC are supported with appropriate DC-DC converter stages.

Contact our FAE team for detailed application guidance.

What is the expected service life of the power modules in solar inverter applications?

Xinleineng power modules are designed for 25-year service life in solar applications. With proper thermal design keeping junction temperatures below 100C under normal operating conditions, the modules exceed IEC 61215 thermal cycling requirements. Accelerated life testing predicts less than 0.1% annual failure rate over 25 years.

Contact our FAE team for detailed application guidance.