External CT detects the load current, DSP as CPU has advanced logic control arithmetic, could quickly track the instruction current, divides the load current into active power and reactive power by using the intelligent FFT, and calculates the harmonic content rapidly and accurately. Then it sends PWM signal to internal IGBT's driver board to control IGBT on and off at 20KHZ frequency. Finally generates opposite phase compensation current on inverter induction, at the same time CT also detects the output current and negative feedback goes to DSP. Then DSP proceeds the next logical control to achieve more accurate and stable system.
Technical Specifications
TYPE
220V Series
400V Series
500V Series
690V Series
Rated compensation current
23A
15A、25A、50A 75A、100A、150A
100A
100A
Nominal voltage
AC220V (-20%~+15%)
AC400V (-40%~+15%)
AC500V (-20%~+15%)
AC690V (-20%~+15%)
Rated frequency
50/60Hz±5%
Network
Single phase
3 phase 3 wire/3 phase 4 wire
Response time
<40ms
Harmonics filtering
2nd to 50th Harmonics,The number of compensation can be selected,and the range of single compensation can be adjusted
Harmonic compensation rate
>92%
Neutral line filtering capability
/
The filtering capacity of 3 phase 4 wire neutral line is 3 times of that of phase fiitering
Machine efficiency
>97%
Switching frequency
32kHz
16kHz
12.8kHz
12.8kHz
Function
Deal with harmonics
Numbers in parallel
No limitation.A single centralized monitoring module can be equipped with up to 8 power modules
Communication methods
Two-channel RS485 communication interface (support GPRS/WIFI wireless communication)
Alfitude without derating
<2000m
Temperature
-20~+50℃
Humidity
<90%RH,The average monthly minimum temperature is 25°C without condensation on the surface
Harmonic source: rectifier, inverter Harmonic equipment: switching power supply, air conditioning, elevator, LED
