sineSYNC
SineSYNC
3-Phase Power Factor Correction
IoT-Enabled Adaptive Three-Phase Power Factor Correction (PFC) Prototype

SineSYNC — real-time monitoring and adaptive capacitor switching for improved power quality.

Designed for predominantly inductive loads in residential complexes, small commercial establishments, and light industrial applications. Each phase is monitored independently, and capacitor banks are switched using series-strings in parallel to achieve the closest under-target reactive power compensation.

Explore the thesis Try the interactive demo
Phases
3
Relays
81
Control
Auto + Manual
Live / simulated correction preview
Mode: -- • Last update: --
Open dashboard
Average power factor trend (before → after correction)
Reactive power (kVAr): needed vs compensated (under-target selection)
Control principle: select the closest configuration where Qcap ≤ Qneed per phase.

Interactive thesis demo

This is a safe, on-page simulator: it computes Qneed, recommends a capacitor combo using your rule (parallel of series strings), and explains any combo like ABC+DE+F.

Bank values used: A=45µF, B=55µF, C=60µF, D=70µF, E=80µF, F=100µF
PF correction calculator
Outputs best under-target combo
Tip: enter per-phase kW for best accuracy.
Results
Qload: -- VAR
Qtgt: -- VAR
Qneed: -- VAR
Recommended combo (under-target)
--
Ceq: -- µF • Qcap: -- VAR • PF(after est): --
Quick visual
Combination explainer
Validates the thesis rule + computes Ceq/Qcap
Rule: parallel of series strings only • each of A–F may appear at most once
Status
Validation: --
Ceq: -- µF
Qcap: -- VAR
Visual: --
Note: this explainer is for the thesis demo. Actual switching logic and safety rules remain enforced on the ESP32 firmware.

Project highlights

Beyond monitoring, SineSYNC performs real-time calculations and automatically selects the most suitable capacitor configuration per phase while avoiding overcompensation.

Adaptive capacitor selection

Uses series strings in parallel (e.g., ABC+DE+F) and chooses the best under-target configuration per phase.

Three-phase visibility

Voltage, current, active power, and power factor per phase, plus temperature and detailed logging including reactive power needed vs compensated.

IoT telemetry pipeline

ESP32 posts JSON to a Hostinger endpoint. The dashboard reads the latest packet with no-cache polling for real-time updates.

Manual override

Manual control allows forcing combinations per phase for validation and testing, then returning to Auto mode.

⚡ Scope of the study

An IoT-enabled, adaptive, microcontroller-based three-phase PFC prototype intended to enhance energy efficiency in inductive-load systems through intelligent control and real-time monitoring.

📶 Remote visualization and configuration through a cloud dashboard
🧠 Adaptive control per phase to approach near-unity power factor
🧩 Modular capacitor banks using locally obtainable capacitor values
🏠 Target applications

Residential complexes, small commercial establishments, and light industrial systems with predominantly inductive loads.

🔧 Hardware overview

ESP32 controller (Wi-Fi/Bluetooth), three-phase sensing, relay-controlled capacitor banks (series + parallel), and cloud telemetry. Internal power supply is derived from a single phase to keep control and monitoring active.

🧪 Validation & testing

Laboratory evaluation under unbalanced/inductive scenarios (Batangas State University – Alangilan Campus), plus a one-month residential single-phase monitoring trial for stability and logging performance.

📊 Dashboard outputs
  • Voltage, current, active power, and power factor per phase
  • Reactive power needed vs compensated
  • Capacitor configuration status (e.g., ABC+DE+F)
  • Temperature monitoring and alerts

🛡️ Delimitations

⚙️ Sensor limit
Evaluation delimited to inductive-load conditions equivalent to 22 kW (sensor safe/accurate range).
🎯 PF performance
Target improvement within ~0.2 to 0.99 depending on the load scenario and operating conditions.
📉 Exclusions
No harmonic mitigation or commercial utility integration (prototype scope and resource limits).
Notes: capacitance tuning is implemented through microcontroller switching of fixed capacitor modules (no variable-capacitor knob due to limited local capacitance availability). Performance may be affected by sensor tolerances, communication latency, and environmental interference; these were mitigated through repeated trials and conservative under-compensation selection.

Tech stack

ESP32 + PCF8575 I/O expander relay control
3× PZEM-004T
PHP API and MySQL logging
Tailwind and Chart.js (graphs)

Access the system

Log in to view the dashboard, live graphs, historical logs, CSV export, and manual capacitor control tools.

Contacts
For thesis inquiries, live demo requests, and technical questions about the three-phase PFC system.