Clean Power for Every Industry & Grid
Harmonic filtering, reactive power compensation and load balancing β from low-voltage modules to medium-voltage STATCOM systems. Explore how each Nengdu solution works, its key specifications and which application it fits.
Eight Ways To Fix Your Power Quality
Active Harmonic Filter (APF)
A power-electronics device connected in parallel with your load. It measures the harmonic current in real time and injects an equal-but-opposite current to cancel it β so the grid only sees clean, sinusoidal current.
- Filter range: 2nd to 50th harmonics, up to 98% filtering efficiency
- Response: < 100ΞΌs, fully adaptive to changing loads
- Topology: 3-level IGBT β low loss, high waveform quality
- Bonus: reactive power compensation & three-phase load balancing
| Models | NDPQC-AHF module / cabinet / wall-mount |
| Voltage | 220V / 400V / 440V / 480V / 690V |
| Rating | 25A β 600A (parallel up to 3000A+) |
| Target THD | Below 5% at point of common coupling |
Static Var Generator (SVG)
An IGBT-based voltage-source inverter that generates or absorbs reactive power instantly, correcting power factor and stabilizing voltage β without the switching steps or resonance risk of capacitor banks.
- Compensation: continuous, stepless from -1.0 to +1.0 power factor
- Speed: 25.6kHz switching, responds in milliseconds
- Harmonics: 2nd to 25th mitigation as a bonus
- Long life: no inrush, no contactor wear, minimal maintenance
| Models | SVG module / Mini SVG 2U / rack & wall mount |
| Voltage | 220V / 380V / 400V / 480V / 690V |
| Rating | 5kvar β 200kvar per unit, parallel for higher |
| Target PF | 0.99+ under normal loading |
Hybrid Power Factor Correction (HPFC)
Combines active SVG modules with capacitor-reactor passive steps. Capacitors handle the coarse reactive demand economically; the SVG polishes the fine remainder β the best value for large reactive loads.
- Economy: cheaper than a pure SVG for the same kvar
- Precision: automatic TSC + contactor + SVG fine control
- Power factor: -1.0 to +1.0 continuously adjustable
- Loss: low power consumption < 2.5%
| Models | HPFC compensation cabinet |
| Voltage | 400V / 480V / 690V |
| Rating | 50kvar β 600kvar (custom) |
| Topology | TSC steps + SVG module hybrid |
Smart Power Factor Correction (SPC)
A three-phase load-imbalance and reactive-power auto-correction device designed for outdoor pole-mount or transformer-mount installation β small, light and maintenance-free for distribution grids.
- Imbalance: auto-balances three-phase loading on site
- Installation: pole / transformer / distribution room
- Control: timed or load-factor start-up logic
- Communication: wireless remote monitoring ready
| Models | SPC smart compensation device |
| Voltage | 380V three-phase |
| Rating | 30kvar β 150kvar (custom) |
| Mounting | Outdoor pole / transformer / cabinet |
Medium-Voltage STATCOM
High-voltage dynamic reactive power compensation for utility substations, renewable energy integration and heavy industrial feeders β with full protection and grid-code compliance.
- Speed: response ≤ 10ms, stepless control
- Voltage: 6kV / 10kV / 35kV classes
- Power: 1Mvar β 50Mvar per project
- Form: containerized or indoor cabinet
| Models | 10kV STATCOM / HV SVG cabinet |
| Voltage | 6kV / 10kV / 35kV |
| Rating | 1Mvar β 50Mvar (project based) |
| Application | Substation, wind/solar farm, heavy industry |
EV Charging Solutions
DC fast charging stations for public charging, highway service areas, fleet depots and commercial parking β with smart payment integration and remote management.
- Power: 60kW β 240kW dual-gun DC fast chargers
- Compatibility: CCS2 / CHAdeMO / GB/T
- Management: OCPP, card / QR-code start
- Integration: payment & charging network platforms
| Models | DC fast charging station |
| Power | 60kW / 120kW / 240kW |
| Connectors | CCS2 / CHAdeMO / GB/T |
| Protocol | OCPP 1.6 / 2.0 |
Capacitor & Reactor Systems
Detuned capacitor-reactor banks and low-voltage compensation cabinets for stable, low-harmonic environments β the classic, reliable way to correct power factor at the lowest cost per kvar.
- Switching: contactor or thyristor (TSC) options
- Detuning: 7% / 14% reactors avoid resonance
- Control: intelligent power factor controller
- Range: 30kvar β 600kvar per cabinet
| Models | LV compensation cabinet / capacitor reactor cabinet |
| Voltage | 400V / 480V / 690V |
| Rating | 30kvar β 600kvar (custom) |
| Accessories | controller, detuned reactor, fuses, thyristor switch |
Power Quality Audit
On-site measurement, harmonic analysis and system design β our engineers study your load profile, measure THD / PF / imbalance and deliver a BOM-ready proposal for the right APF, SVG or HPFC configuration.
- Measurement: THD, power factor, imbalance, voltage events
- Analysis: harmonic spectrum & resonance risk review
- Design: BOM-ready proposal with ratings & layout
- Cost: free for qualifying projects
| Deliverable | audit report + equipment proposal |
| Scope | LV to MV, single site or multi-site |
| Coverage | global β remote or on-site |
| Timeline | report within 5β7 working days |
Not Sure Which Solution Fits Your Site?
Send us your single-line diagram, load list or electricity bill β our engineers will recommend the right APF / SVG / HPFC configuration and quote within 24 hours. Free of charge.