AXPERT-
i-sine Active Front-end Converter (AFC) is an intelligent device, which reduces the harmonics and improves the power
factor of utility side. AXPERT-
i-sine is the best solution for the applications which requires dynamic braking. It helps to save
energy by feeding the excess energy back to the grid.
AXPERT-
i-sine AFC can be used with AC drive(s) for the mitigation of harmonic. It can be used for multiple drives also.
some of the unique features of AXPERT-
i-sine Active Front-end Converter are as under.
Features
Very Fast Response
- The response of AFC is very fast due to its 32-bit, Floating point Digital Signal Processor based control
Low current THD at input side
- Helps to comply with IEEE 519-1992 requirements
- The control algorithm dynamically changes the switching frequency, which keep input current THD less than
5% at rated load condition.
- They reduce total Harmonic distortion (THD), improve the power factor and facilitates compliance to IEEE519 1992 standard.
Selectable Power Factor at input side
- User can select the input power factor from 0.95 lead to 0.95 lag.
Bi-directional Power Flow for regenerative braking
- No need of dynamic braking resistor
- Due to capability of Bi-directional power flow, excessive energy of DC bus can be feed back to the utility supply
Built-In Energy Meter
- AFC has inbuilt energy meter functions like energy import, energy export and energy total - Efficiency better than 98%
Operates with closed loop control for best accuracy
Total 80-Character, 4-Line LCD panel with backlit
Modbus-RTU Connectivity for Networking
Advanced programmable digital I/O interface
Benefits
- Improves power quality by reducing harmonics and improving power factor.
- Reduction in heating of power cables, electronics systems due to less current harmonics at input side.
- Elimination of nuisance tripping in circuit breakers due to reduction in harmonics.
- Energy saving by feeding excessive power of DC bus to supply grid.
- Operational reliability and high availability.
- User-friendly operation.
- Instantaneous dynamic response.
Block diagram
Low Input current Harmonics and improved Power Factor
The AXPERT-
i-sine Active Front-end Converter actively controls the input
current THD and power factor regardless of motor speed and percentage
of rated load. Even if supply voltage distortion is 5% the supply side
performance is good. The performace of AXPERT-
i-sine is less affected
by supply voltage harmonic distortion.