Harmonics Archives | Shakti Power Solutions https://www.shaktipowertronix.com/category/harmonics-2/ Shakti Power Solutions Pvt Ltd | Industry Leader in Power Backup, Solar Energy, Water Treatment, and Consultancy Tue, 11 Jun 2024 07:34:37 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 https://www.shaktipowertronix.com/wp-content/uploads/2023/11/fav-shakti.svg Harmonics Archives | Shakti Power Solutions https://www.shaktipowertronix.com/category/harmonics-2/ 32 32 Active Power (Harmonic) Filter https://www.shaktipowertronix.com/active-power-harmonic-filter/ https://www.shaktipowertronix.com/active-power-harmonic-filter/#respond Sat, 06 Jan 2024 08:29:48 +0000 https://shaktipowertronix.com?p=6275 Active Power (Harmonic) Filter Delta’s PQC Series APF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles […]

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Active Power (Harmonic) Filter

Delta’s PQC Series APF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics.

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APF Principle
Delta’s PQC Series APF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics.

The PQC series APF not only eliminates harmonic current from the load side, but it also mitigates harmonic voltage caused by harmonic currents. The APF system can also improve power factor (PF) and correct load imbalances in the power system.

Note: CT is a critical part of the APF system, and it can be purchased by users themselves, following Delta’s suggestions on CT specification.

PQC APF Principle

APF Structure

Delta PQC Series APF has a modular design, which adopted 3-level inverter topology with 3 pcs modular IGBT and DC capacitor components, and the Delta Active Power Filter system consists of one or several APF modules and a 7'' or 10'' HMI display.

Each APF module is an independent harmonic filtering system, and users can change the harmonic filtering system rating by adding or removing APF modules.

According to the mounting type, Delta PQC series APF can be divided into Modular APF (rack mounting) and wallmounted APF.

APF Module and Cabinet Solutions

According to cable terminal type, a modular APF can be divided into two types:.

Drawer type modular APF (adding pluggable accessories on power cable terminals)
Mixed fixed type modular APF (Power cables are fixed from rear side, Signal cables are fixed from front side)

  1. Multifunctional: Harmonic, reactive power and imbalance compensation
  2. Harmonic Elimination Range: 2nd~50th order (Selectable)
  3. High harmonic filtering rate: Up to 98%
  4. Excellent reactive compensation: High speed, Precise (-0.99 ≤ PF≤ 0.99), Step-less, Bi-directional (capacitive and inductance) compensation
  5. Excellent imbalance correction: Both negative and zero sequence, mitigates neutral current
  6. Wide input voltage & frequency range, adapts to tough electrical environments
  7. Low thermal loss and high efficiency
  8. High stability: Infinite impedance to grid, avoids harmonic resonance problems
  9. Flexible application: Modular design, embedded in standard or customized cabinet
  10. Easy installation and maintenance: Plug-in installation for APF module replacement and expansion
  11. Wide capacity range: 30~750 A for a single cabinet, up 10 cabinets in parallel
  12. Environmental adaptability: -10~50°C ambient temperature, compatible with diesel generator
  13. Complete protection: Grid Over/Under voltage, APF over current, over temperature, and more. All faults are recorded in the event log, which is convenient for failure analysis
  14. Waveform display function on HMI: Display waveform of input Voltage, Grid current, Load current and APF current
  15. Display Harmonic current Histogram on HMI: Grid harmonic current and load harmonic current
  16. CTs’ reversal auto correction can be setted on HMI, support grid side or load side current detection

Brochure_PQC-mixed-fixed-type_en_v6-2309-6

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]]> https://www.shaktipowertronix.com/active-power-harmonic-filter/feed/ 0 Static Var Generator (SVG) https://www.shaktipowertronix.com/static-var-generator-svg/ https://www.shaktipowertronix.com/static-var-generator-svg/#respond Sat, 06 Jan 2024 08:18:49 +0000 https://shaktipowertronix.com?p=6267 Static Var Generator (SVG) The principle of the SVG is very similar to that of Active Power Filter, as demonstrated in the picture below. When the load is generating inductive or capacitive current, it makes load current lagging or leading the voltage. SVG detects the phase angle difference and generates leading or lagging current into […]

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Static Var Generator (SVG)

The principle of the SVG is very similar to that of Active Power Filter, as demonstrated in the picture below. When the load is generating inductive or capacitive current, it makes load current lagging or leading the voltage. SVG detects the phase angle difference and generates leading or lagging current into the grid, making the phase angle of current almost the same as that of voltage on the transformer side, which means fundamental power factor is unit.

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SVG Principle

The principle of the SVG is very similar to that of Active Power Filter, as demonstrated in the picture below. When the load is generating inductive or capacitive current, it makes load current lagging or leading the voltage. SVG detects the phase angle difference and generates leading or lagging current into the grid, making the phase angle of current almost the same as that of voltage on the transformer side, which means fundamental power factor is unit.

Delta’s PQC series SVG is also capable of correcting load imbalance and compensating part of harmonic currents.

Note: CT is a critical part of the SVG system, and it can be purchased by users themselves, following Delta’s suggestions on CT specification.

SVG PrincipleSVG - Waveform and Vector

SVG Structure

Delta PQC Series SVG has a modular design, which adopted 3-level inverter topology with 3pcs modular IGBT and DC capacitor components, and the Delta SVG system consists of one or several SVG modules and a HMI display.

SVG’s HMI can be shared with Delta APF modules. Each SVG module is an independent reactive power compensation system, and users can change the SVG rating by adding or removing SVG modules.

SVG Module and Cabinet Solutions

According to cable terminal type, a modular SVG can be divided into two types:

  1. Drawer type modular SVG (adding pluggable accessories on power cable terminals)
  2. Mixed fixed type modular SVG (Power cables are fixed from rear side, Signal cables are fixed from front side.)

 

  1. Multifunctional: Reactive power, imbalance and part of Harmonic compensation
  2. Excellent reactive compensation: High speed, Precise (-0.99 ≤ Cosφ ≤ 0.99), Step-less, Bi-directional (capacitive and inductance) compensation
  3. Excellent imbalance correction: Both negative and zero sequence, mitigates neutral current
  4. Harmonic Elimination Range: 2nd~25th order (Selectable)
  5. Harmonic current capacity: 20% of rated current, 100 kvar SVG can output 30A H2-H25 harmonic compensation current
  6. Wide input voltage & frequency range, adapts to tough electrical environment
  7. Low thermal loss and high efficiency
  8. High stability: Infinite impedance to grid, avoids harmonic resonance problem
  9. Flexible application: Modular design, embedded in standard or customized cabinet
  10. Easy installation and maintenance: Easy installation for SVG module replacement and expansion
  11. Wide capacity range: 25~700 kvar for a single cabinet, up to 10 cabinets in parallel
  12. Environmental adaptability: -10~50°C temperature, compatible with diesel generators
  13. Complete protection: Grid over/under voltage, SVG over current, over temperature, and others. All faults recorded inevent log, convenient for failure analysis
  14. Waveform display function on HMI: Display waveform of input Voltage, Grid current, Load current and SVG current
  15. Display Harmonic current Histogram on HMI: Grid harmonic current and load harmonic current
  16. CTs’ reversal auto correction can be setted on HMI, support grid side or load side current detection

Brochure_PQC-mixed-fixed-type_en_v6-1- 

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