The LCL filter is designed to solve the problem of harmonic voltage in the connection to the power grid. This filter reduces the amount of noise and interference in the power grid by converting the PWM voltage waveform to a pure sine wave. Its main purpose is to ensure the correct operation of the entire system. Also, the LCL filter has limitations in managing current harmonics.
The LCL filter is designed to solve the problem of harmonic voltage in the connection to the grid, converting the PWM voltage waveform to a pure sine wave, reducing distortion to the power grid.
The LCL filter also has limitations on current harmonics.
LCL filter features:
- Improved power quality for active input converter (AC)
- High attenuation of pulse frequency to the grid
- Integrated damping resistors to suppress current oscillation
- Protection degree: IP00
- Changes are possible according to customer-specific requirements
- Design complies with CE certification
Technical data and measurement conditions of the LCL filter
Rated voltage: 400 V AC
Rated current: Refers to a rated temperature of 50 ° C
Test voltage: 2240 V DC
Overload capability: 1.5 x rated current for 3 minutes per hour
Active input converter (AIC)/ frequency inverter carrier frequency: 2 kHz … ۸ kHz
Motor frequency: 0 Hz … ۱۰۰ Hz
Motor cable length: less than 150 m
Noise: approx. 72 dB
Weather classification: IEC 60068-1
Terminals
Finger-safe terminal blocks A66- A16
Busbar for AC reactors and line reactors A400- A100
LCL filter application
- Active input converter (AIC)
- Four-quadrant frequency inverter
- PV
- Other new energy applications requiring grid-type converters.
