Name: GY-SVG-SiC Silicon Carbide Static Var Generator - GEYA Electrical Equipment Supply
SKU: GY-SVG-SiC

Description

The GY-SVG-SiC Silicon Carbide Static Var Generator is a next-generation power quality solution utilizing advanced SiC power devices. It delivers ultra-efficient, real-time reactive power compensation, three-phase unbalance correction, and neutral-line filtering with a peak efficiency of over 98.5%. Ideal for demanding industrial and commercial grids, it ensures dynamic voltage stabilization with a transient response under 50 µs, making it the ultimate choice for modern electrical networks.

Working Principle

Using Silicon Carbide (SiC) power devices as the core, the GY-SVG-SiC connects a voltage source converter (VSC) to the power grid via an LCL filter in parallel. Its working principle is to dynamically and accurately compensate for reactive power in the grid system by adjusting the amplitude and phase of the output voltage on the AC side of the converter. The transient response time is less than 50 µs, and the full response time is less than 10 ms, thereby completely avoiding over-compensation and under-compensation.

Key Performance Highlights

✔ SiC Power Devices & 30kHz Frequency

Utilizes the higher voltage withstand capability of SiC components. The 30kHz high switching frequency control algorithm minimizes output ripple current and maximizes dynamic response speed.

✔ DSP+CPLD Full-Digital Control

Features a three-level topology, advanced reactive power detection algorithm, and precise PWM control strategy for ultimate accuracy.

✔ High Power Density & Scalability

Reduced module losses lead to a peak efficiency of ≥ 98.5%. A single cabinet can accommodate up to 8 modules, achieving a massive maximum capacity of 800 kvar.

✔ Dual External CT Channels

Supports versatile compensation modes, including low-voltage side sampling with low-voltage side compensation, and reactive component compensation.

✔ Superior Filtering & Unbalance Correction

Neutral line zero-sequence current filtering capacity is 3 times that of the phase line. Unbalance degree after compensation is reduced to ≤ 5%.

✔ Robust Reliability & EMC Class A

Supports 100% current-limiting output for long-term stable operation. Simplifies thermal design and meets Class A test standards for both RE and CE.

Parameter	220V Model	380V Model
Operating Voltage	AC 220V (-20% ~ +20%)	AC 380V (-20% ~ +20%)
Rated Compensation Capacity	37 kvar, 50 kvar	75 kvar, 100 kvar
Altitude	< 2000 m (Above 2000 m, derate according to GB/T 3859.2)
Ambient Temperature	-10°C ~ +50°C (Above 40°C, capacity derating ≤ 30%)
Relative Humidity	≤ 90%, no condensation at a monthly minimum temperature of 25°C
Pollution Degree	Class III or below
Operating Frequency	50Hz / 60Hz (45Hz ~ 63Hz)
Grid Configuration	Three-phase three-wire (3P3W), Three-phase four-wire (3P4W)
Parallel Units	Unlimited
Efficiency	Overall efficiency ≥ 97% (Peak efficiency ≥ 98.5%)
Switching Frequency	30 kHz
Function Selection	Reactive power compensation / Reactive power + three-phase unbalance compensation
Reactive Compensation Rate	≥ 99%
Unbalance Compensation	Unbalance degree after compensation ≤ 5%
Response Time	Transient < 50 µs \| Full response < 10 ms
Noise Level	≤ 65 dB
Communication Method	2× RS485 communication ports (Wi-Fi supported)
Protection Functions	Overload, software/hardware overcurrent, grid overvoltage/undervoltage, grid voltage unbalance, power supply failure, over-temperature, frequency anomaly, short circuit, resonance protection, etc.
Overload Capability	Rated 1.2 times overload for 60 seconds
Installation Method	Rack-mounted / Wall-mounted
Cable Entry	Rear cable entry (rack-mount) / Top cable entry (wall-mount)
Protection Rating	IP20 (IP54 customizable)
Neutral Line Filtering	Neutral line filtering capacity is 3 times that of phase filtering capacity
Cooling Method	Forced air cooling
EMC	Radiated Emission (RE) and Conducted Emission (CE) meet Class A test standard

Frequently asked questions

1. What is the GY-SVG-SiC?

It is a silicon carbide (SiC) based Static Var Generator — a power-electronic reactive power compensation device that connects a voltage source converter in parallel with the grid. Using SiC power devices and a DSP+CPLD three-level control core, it dynamically generates capacitive or inductive reactive current to correct power factor, stabilize voltage and balance three-phase loads, with module peak efficiency up to 98.5% and up to 800 kvar per cabinet.

2. What functions does it provide?

Real-time reactive power compensation (rate ≥99%, power factor to ≥0.99), three-phase unbalance compensation (≤5% residual), neutral-line zero-sequence current filtering (3× phase capacity), voltage stabilization, dynamic compensation of impact/fluctuating loads (full response <10 ms, transient <50 µs), 100% current-limiting output and comprehensive protection. Two compensation modes are selectable.

3. Which parameters affect model selection?

Grid voltage (220V or 380V) and configuration (3P3W / 3P4W); required capacity in kvar (37/50 per 220V module, 75/100 per 380V module, up to 8 modules / 800 kvar per cabinet); compensation goal (reactive only vs reactive + unbalance); CT sampling scheme (LV- or HV-side); installation environment (ambient temperature, altitude derating, IP rating); form factor and cable entry; and communication / parallel-expansion needs.

4. What options are available?

Models: 220V (37/50 kvar) and 380V (75/100 kvar); form factor: wall-mounted or rack-mounte

GY-SVG-SiC Silicon Carbide Static Var Generator