Active Power Quality Filters

Active Harmonics Filters(APF), Load balancing(SPC) and Reactive compensation on LV networks

The cost of poor power quality

Power quality affects the smooth functioning of a business. Issues like disturbances or harmonic pollution cause downtime, equipment malfunction, and damage which impact the financial bottom line. Prioritize power quality to ensure uninterrupted business functioning.

Poor power quality sources:

There are three significant sources of power power quality caused by variety of loads in customer installations:

Harmonic solution due to non-linear loads
Loads imbalance resulting in voltage imbalance and phase to neutral voltage
Poor power factor due to lagging and leading currents

Poor power quality costs money due to:

Frequency failures of equipment, nuisance tripping, etc.
Reduce lifetime of equipment
Production loss due to unschedule downtime
Reduced safety levels of installations
Increased carbon footprint
Non-compliance with utility regulations

In addition, there are costs incurred due to extra kWh losses in typical network components such as transformers, cables and motors. These losses cascaded back to the utility power plants result in increased CO2 emissions. The emissions can be significant or marginal depending on the process and the fuel type from which the electrical power is generated.

The power Quality Filter types

Active Harmonic Filters
Reactive Power Control
Load Balancing

An CBC PQF, Active Power Filter (APF) is a power electronics based electrical equipment that is installed parallel to the polluting loads. It monitors the line current harmonics, as well as the customer requirements programmed by the user. It can then generate for each harmonic frequency a compensation current in perfect phase opposition to the polluting current.
The use of a closed loop control system in combination with the selection capability of individual harmonic components makes the CBC PQF Active Power Filter the most precise active filter in the market:

The closed loop control system measures the line current for
each harmonic and reactive power component and compares this with the target set by the customer. Any deviation is automatically eliminated.

Our closed-loop control concept, Static Var Compensation (SVC) or Static Var Generator (SVG), operates by obtaining current samples from the load side. The controller then computes the necessary reactive power compensation and sends commands to the IGBT drives. We extend our sincere gratitude to the team for their exceptional work in designing the topology. As a result, the system achieves the target Power Factor (PF) as defined.

The closed loop control concept allows the Power Quality Filter to showcase exceptional performance in achieving the target power factor.
This can be attributed to the 3 levels IGBT Inverter topology of CBC Active Power Quality Filter (PQF), which enables the balancing of power sources or Smart Power Correction (SPC) from unbalanced loads at the point of common connection (PCC).
It is crucial to take note that an increase in load unbalance can lead to a rise in neutral current and voltage unbalance at the load side.

Modularity

The CBC Active Power Quality Filters (PQF) is a modular system that can be easily connected in parallel with up to 12 modules. It delivers a maximum power of 1800kVAR or 2400A, making it an efficient and dependable solution for different applications. Enhance your facility’s power quality, save energy costs and extend the lifespan of your equipment by choosing CBC Active PQF, which offers exceptional performance and a feature-rich design. Trust CBC Active PQF for superior power quality and efficiency.

PQ monitoring

When a module is placed in a cabinet, an external touch screen can be installed on the front door panel of the cabinet body to facilitate setting and viewing parameters. The external touch screen can be divided into 7 inches large screen. You can learn more about the operation of the 7-inch screen.