Product Features | ||||
Harmonic Mitigation: | i - Sine AHF assures the plant current THD to stay below the limits specified by the IEEE 519-1992 with full dynamic compensation. | |||
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Power Factor Control: | i - Sine AHF ensures unity power factor operation of the plant. Fully dynamic compensation adaptive to the load changes. | |||
Current Balancing: | i - Sine AHF assures the plant current drawn from the EB to be balanced and sinusoidal. | |||
Neutral Current Compensation: | A 3P4W i - Sine AHF fully supports the load neutral current locally, and assures zero neutral current on the source/EB side. | |||
No prerequisite: | i - Sine AHF in general, does not require the installation of input chokes with VFDs, as long as the load current THD is below 40%. | |||
Energy Efficiency: | i - Sine AHF consists of an intelligent On-The-Fly real-time internal switching loss minimization technique to further enhance the internal energy efficiency. | |||
Optimum Design: | Light in weight, compact in size, quieter in operation, and best in the performance. | |||
Wide Range of Harmonic Selection: | Ability to cancel all odd harmonics up to 71st order. These harmonics are individually selectable/programmable with no limitation. |
i - Sine AHF Specifications | ||||
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Plant Input Conditions | ||||
System Voltage (RMS) | 350 - 450 V | |||
Fundamental Frequency (Hz) | 50 ± 5% | |||
System Configuration | 3P3W and 3P4W (single-phase option available) | |||
Product Specification | ||||
Power Semiconductor Devices | IGBTs | |||
Output Current Ratings (RMS) | 25A/ 50A/ 100A/ 150A/ 200/ 300A | |||
Continuous Peak Compensating Current Rating | 2.2 times RMS Value “No need of oversizing with VFD loads” # | |||
Harmonic Compensation Range | All odd harmonics up to 71st order “Widest range and fasted harmonic filtering available in India”# | |||
Selective Harmonic Compensation | From 0 to 100% for all 71 Harmonics “No limit on the number of harmonics selection at a time” # | |||
Reactive Power Compensation | Yes | |||
Harmonic Attenuation Factor | More than 97% at rated load | |||
Load Current Balancing | Yes | |||
Cooling | Forced Air Cooling | |||
Cable Entry | Bottom | |||
Mounting | Wall mounting/ Floor mounting | |||
i - Sine AHF Control System | ||||
Controller type | Digital control | |||
Control Method | Based on Adaptive Artificial Neural Networks (ANN) “Ultra-fast computation” # | |||
Dynamic Response Time | 100 microseconds | |||
User Interface | ||||
Monitoring (Waveform and Parameters) | Through InstaVIEW software on USB port | |||
User Parameter Setting | Using InstaVIEW software | |||
Additional Details | ||||
Operating Temperature Range | 0 to 50o C “No derating required in the entire operating range”# | |||
Active Power Loss | Less than 3% | |||
Parallel Operation | Yes | |||
Short-circuit Protection | Yes | |||
Color | Standard | |||
Noise Level | 65dB |
i - Sine AHF Sizing | ||||
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Plant Harmonic and Reactive Current Calculations | ||||
The i - Sine AHF should be sized properly to compensate both the harmonics and fundamental reactive currents simultaneously. Following procedure can be used to compute the required i - Sine AHF rating. The knowledge of three basic parameters required to size the i - Sine AHF are: | ||||
Parameter | Symbol | |||
Total RMS current drawn by the plant at full load | I rated | |||
Total current harmonic distortion at full load | THDi* | |||
Fundamental power factor (either leading or lagging) | PF | |||
* Absolute value (i.e., percentage/100). | ||||
Once the above parameters are known, the plant total harmonic current (IH) in amperes can be calculated as: $$IH = Irated { \sqrt{{THDi^2} \over 1 + THDi^2}}$$ | ||||
While, the plant total fundamental reactive current (IQ) in amperes can be determined as: $$IQ = Irated { \sqrt{{1- THDi^2} } \sqrt{ 1 - PF^2}}$$ | ||||
i - Sine AHF Rating Selection
The RMS current rating (IF) of i - Sine AHF can be selected as per the compensation requirement. |
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Purpose of AHF | ||||
Harmonics Cancellation Only Compliant to EB harmonic requirements (or IEEE standards, such as, IEEE 519-2014) |
$$IF = IH $$ | |||
Unity Power Factor Operation Only For maximizing power factor incentives only |
$$IF = IQ $$ | |||
Simultaneous Harmonics Cancellation and Unity power Factor Operation Compliant to EB harmonic requirements and power factor incentives | $$IF = { \sqrt{{I^2H + I^2Q} } }$$ |