Grid-Connected Power Stage
Grid Tie Inverters (GTI)
High-efficiency solar grid-tied power conversion platforms with high-speed DSP phase synchronization, dynamic MPPT tracking, active anti-islanding, and ultra-low grid current distortion.
Active Anti-Islanding Protection: Instantaneous frequency-shift detection shutting down feed within 20 milliseconds during grid outage.
Ultra-Low Harmonic Injection: Total Harmonic Current Distortion (THDi) < 2.5%, satisfying IEEE 519 and IEC 61000 standards.
98.6% Peak Conversion: SiC and high-speed IGBT power bridge with optimized multi-stage LCL filter.
Grid Compliance Data
Grid Tie Inverter Specifications
Single-phase (3 kW to 6 kW) and three-phase commercial (10 kW to 50 kW) platforms.
| Specification | VQN-GTI-5K (1-Phase) | VQN-GTI-15K (3-Phase) | VQN-GTI-50K (3-Phase Commercial) |
|---|---|---|---|
| Nominal AC Power | 5,000 W | 15,000 W | 50,000 W |
| Max PV Input Voltage (Voc) | 600V DC | 1000V DC | 1100V DC |
| MPPT Operating Voltage | 120V - 550V DC | 200V - 850V DC (Dual MPPT) | 200V - 1000V DC (Quad MPPT) |
| Nominal Grid Voltage | 230V AC (180V - 275V) | 400V / 415V AC (320V - 480V) | 400V / 415V AC 3P+N+PE |
| Grid Frequency Range | 50 Hz / 60 Hz (47 Hz - 53 Hz) | 50 Hz / 60 Hz (47 Hz - 53 Hz) | 50 Hz / 60 Hz (47 Hz - 53 Hz) |
| Total Harmonic Distortion | < 2.5% at rated power | < 2.0% at rated power | < 1.8% at rated power |
| Max Efficiency | 97.8% (Euro 97.2%) | 98.4% (Euro 98.0%) | 98.7% (Euro 98.4%) |
| Protections | DC reverse polarity, DC switch, AC short circuit, anti-islanding, insulation resistance monitoring, AC/DC Type II surge arresters | ||
| Telemetry Interfaces | RS485 Modbus RTU, Wi-Fi / 4G IoT Gateway, Ethernet, SunSpec compatible | ||