Hybrid Var Generator

A hybrid reactive power compensator is a power electronic device that combines a static var generator (SVG) and a thyristor-switched capacitor (TSC). It can achieve rapid, smooth, and continuous reactive power compensation through a combination of active and passive methods. This device combines the advantages of both, using the lower-cost TSC for coarse compensation and the higher-cost, higher-performance SVG for fine compensation, achieving the best compensation effect at a lower cost.

Your Professional Hybrid Var Generator Supplier！

Leonhard (Shanghai) Electricity Co., Ltd. (LEONHARD) established in 2017, is a high-tech enterprise in the field of power quality, specializing in modern, professional, and intelligent high-quality products and services.As a pioneer and leader in power quality solutions, LEONHARD specializes in R&D, production, and sale of Active Harmonic Filter, Static Var Generator, Hybrid Var Compensator System,Dynamic Voltage Restorer,VFD DC Link System,Unified Power Quality Conditioner.

why choose us

Professional Team

Leonhard is the first company in China to apply SiC MOSFET to the power quality industry. It has advanced manufacturing equipment and a professional R&D team. Through continuous improvement and R&D, its SiC series products have now reached the third generation.

Our Certifications

Our products are backed by CE certification, patents, and third-party testing reports. With successful projects across multiple international markets, we understand global standards and application requirements.

Sales Market

Our power quality products have been widely used in Poland, Mexico, Belarus, Cambodia, Thailand, Vietnam, Dortmund and other countries.

Our Service

We provide end-to-end service from pre-sales system design to installation, commissioning, and after-sales support. With 24/7 technical assistance and regular maintenance services, we help ensure stable system operation over time.

Product Specification

We offers the following product specifications：

Electrical properties	Rated voltage	400/690VAC
	Operating frequency	50/60Hz
	Electrical connection	Three-phase four-wire/ three-phase three-wire
	Capacity of whole cabinet	50~500kvar
	Switch of capacitors	Thyristor,compound switch, contactors
	Compensation mode	Either three-phase compensation or single-phase compensation
	Compensation effect	The system power factor is greater than 0.98 after compensation within the rated capacity.
	SVG module response time	<5ms
	Capacitor response time	<1s
	Active loss of system	<3%
	Output current limit	Automatically limited within 100% of rated capacity to output
	Number of units connected in parallel	≤10 units
	MTBT	>100,000 hours
Control characteristics	Controller	DSP+FPGA
	Switching frequency	12.8K
	Capacitor control interface	16 Ways
	Communication mode	Adopt Modbus remote communication protocol; communication interface adopts RS485 and CAN bus, supporting USB data download.
	Control connection	Fiber or electrical connection
Structural characteristics	Weight	Refer to the model selection table.
	Level of protection	IP20
	Cooling method	Air cooling
	Noise	<50db
	Installation method	Cabinet mounting.
Environmental requirements	Ambient temperature	-20~55℃
	Relative humidity	Maximum 95%, without condensation
	Mounting height above sea level	≤1,000m at rated capacity; appropriately reduce the capacity if it is greater than 1,000m

Product features

Stepless & Seemless output: No visible “steps” in the reactive power, achieving a better performance than only using capacitor bank or reactor bank steps.

Only one CT-signal input required from the system: No need for duplicated CTs.

No System Hunting. No need for extra controller for the capacitor bank or for the reactor bank.

No need for different step ratios: Capacitor banks can be built with all steps of the same rating, making the design simple and needing only one type of capacitor unit in stock. Steps can be of largest suitable rating to optimize costs and reduce layout.

Two operation modes: Ultra-fast mode for changing loads in open-loop, and PFC mode for traditional closed-loop control.

Capacitive and inductive real-time reactive power compensation: The hybrid reactive compensation can also produce inductive reactive power. This ensures that there will be no overcompensation from steps or loads.

Stable control as all power quality problems of the installation are managed by a single controller.

Application

Applications in commercial buildings:

AirportsHospitals and laboratories, Residential buildings, Shopping malls, Ski resorts, Amusement parks

Applications in infrastructure & renewable energy:

Water and wastewater treatment plants, Heating, ventilation and air conditioning systems (HVAC), Wind and solar farms, TractionMetro stations, CranesLifts & Escalators

Applications in industry:

Welding processes in automotive industry, Mining (mine winders, excavators, conveyors), Steel industry (electric arc furnaces, rolling mills), Marine vessels, Shredders, crushers and cranes

Components

Static Var Generator (SVG) Module:

The dynamic component utilizing Insulated-Gate Bipolar Transistors (IGBTs) to provide fast, continuous reactive power compensation (leading or lagging).

Thyristor Switched Capacitor (TSC) / Capacitor Banks:

Provides large-capacity, step-based reactive power compensation to handle stable load requirements.

Switching Devices:

China Unicom manpower is specialized in the work of foreign personnel in China,business,tourism,visiting relatives and other document services.

Detuned Reactors:

Iron-core reactors paired with capacitors to prevent resonance with the power grid and reduce harmonic amplification.

Intelligent Controller (HMI):

Centralized unit that manages the coordination between the SVG (fast) and TSC (large capacity) to maximize performance and equipment life.

Power Components:

Including breakers, fuses, and Surge Protection Devices (SPD) for electrical safety.

Certifications

Other Services

All of our machines will be fully checked by our quality control department before the shipment. We guarantee all of our have a one-year warranty (quick-wear parts not included).

Training details: Operation principles, system, and structure, safety and maintenance, software processing technique, etc.

Numerous feedback from our clients have proven that our machines are stable in performance with rare malfunction.However, we would like to handle it as follows once malfunction occurs:

We guarantee that we will give you a clear reply within 24 hours.

Customer service staff will assist you in analyzing the malfunction to locate the cause.

If the malfunction is caused by improper operation of software and other soft faults, we will help solve the problem online.

We will offer plenty of online support, like detailed technical and installation instructions via email, video, and telephone.

Package & Delivery

1. Package: Standard export package or Custom

2. Delivery: By air express, by sea

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FAQ

Q: What is a Hybrid Var Generator (HVG)?

A: A Hybrid Var Generator combines the advantages of a Static Var Generator (SVG) and traditional capacitor banks to provide both dynamic and cost-effective reactive power compensation.

Q: How does an HVG differ from a standard SVG?

A: While SVG delivers fast and continuous compensation, HVG integrates capacitor banks to handle base reactive power demand, reducing overall system cost while maintaining dynamic performance.

Q: What are the key benefits of using an HVG?

A: HVG offers a balance of high efficiency, fast response, reduced investment cost, and improved power factor correction in systems with varying load conditions.

Q: What types of applications are suitable for HVG systems?

A: HVG is ideal for industrial facilities, utilities, and commercial buildings where both steady and fluctuating reactive power compensation are required.

Q: How does HVG improve power factor?

A: HVG continuously adjusts reactive power output by combining step-based capacitor compensation with real-time SVG control, maintaining a stable and near-unity power factor.

Q: What response time can HVG achieve?

A: The SVG component provides rapid response, typically within milliseconds, while capacitor banks handle steady-state compensation.

Q: Can HVG operate in harmonic-rich environments?

A: Yes, HVG systems are designed to perform reliably in environments with harmonics and can be configured with filtering functions if required.

Q: What voltage levels are supported?

A: HVG solutions are available for low-voltage and medium-voltage systems, depending on project requirements.

Q: Does HVG help reduce energy costs?

A: Yes, by improving power factor and reducing reactive power penalties, HVG can lower electricity costs and improve overall system efficiency.

Q: What installation options are available?

A: HVG systems are typically provided as floor-standing cabinets, with modular designs available for flexible integration.

Q: What communication protocols are supported?

A: Standard communication options include RS485 and Modbus, enabling integration with SCADA and energy management systems.

Q: What protection features are included?

A: HVG systems include protections such as overvoltage, undervoltage, overcurrent, capacitor protection, and temperature monitoring.

Q: What maintenance is required for HVG systems?

A: Maintenance is minimal and typically includes periodic inspection of capacitors, cooling systems, and electrical connections.

Q: Can HVG be customized for specific projects?

A: Yes, HVG systems can be tailored based on load characteristics, compensation capacity (kVar), voltage level, and site conditions.

Q: What information is needed to select an HVG system?

A: Buyers should provide load profiles, reactive power demand, harmonic conditions, system voltage, and target power factor to ensure proper system sizing.

As one of the most professional hybrid var generator manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale custom made hybrid var generator from our factory. For more information, contact us now.

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