Unirazz Services

20/03/2026

Eid Mubarik
Warm Wishes from
UNIRAZZ Services
Building with Excellence,
Celebrating with Gratitude.

04/03/2026

How Dual-Mode PCS Enables Seamless Power Transition in BESS Systems
Battery Energy Storage Systems (BESS) are often misunderstood as simple containers filled with lithium-ion batteries. In reality, the intelligence of a BESS lies in its Power Conversion System (PCS) and the control architecture behind it. One of the most powerful capabilities of modern BESS is Dual PCS Operating Modes.
These systems can operate in:
🔹 Grid-Following Mode (PQ Control)
The PCS synchronizes with the utility grid and injects active and reactive power based on system demand. This mode is commonly used for:
Peak shaving
Energy arbitrage
Frequency support
Renewable integration
🔹 Grid-Forming Mode (VSG / VF Control)
Here, the PCS behaves like a virtual synchronous generator, creating its own voltage and frequency reference. This allows the BESS to:
Perform black start operations
Support microgrid islanding
Maintain voltage stability
Supply critical loads when the grid fails
The real engineering breakthrough lies in the smooth transition between these modes.
Through continuous phase tracking, voltage monitoring, and pre-synchronization algorithms, the PCS detects grid disturbances within milliseconds and shifts from grid-following to grid-forming mode without interrupting the load.
This capability makes BESS a key technology for:
a).Industrial power reliability
b). Renewable energy stabilization
c). Data centers and critical infrastructure
d). Microgrids and island systems
e). Future resilient power networks
As power systems become more decentralized, dual-mode PCS architecture will play a pivotal role in maintaining grid stability and operational continuity.
The future grid will not just consume energy — it will form and stabilize it.
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04/03/2026

Different problems require different solutions.
In modern power systems, frequency instability and inertia deficiency are becoming increasingly common challenges — especially with the rapid pe*******on of renewable energy.
But one important question must always be asked:
Are we solving the right problem with the right technology?
Not every grid issue requires the same solution.
Different technologies serve different purposes:
🔹 SSC / E-STATCOM – Fast reactive power support and voltage stabilization
🔹 EDLC Supercapacitor ESS – Ultra-fast response for inertia support
🔹 Supercapacitor + Battery Hybrid ESS – Bridging fast response and sustained energy delivery
🔹 Battery Energy Storage Systems (BESS) – Medium to long-duration balancing and reserve services
Each solution addresses different stages of grid imbalance, from milliseconds to minutes.
The key is correct diagnosis of the grid problem before selecting the technology.
💡 Different solutions for different problems. You must first select the right problem to solve.
At Unirazz Services, together with advanced technology partners like Sieyuan, we help utilities and industries identify the exact grid challenge and design the most effective technical solution.
📩 Let us get involved — and we will help you decide the best solution for your system.
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04/03/2026

BESS is NOT Just a Container Filled with Batteries.
Many people still think a Battery Energy Storage System (BESS) is simply a shipping container with cells placed inside.
In reality, a utility-scale BESS is a carefully engineered, cluster-based electrical system designed by power engineers, battery specialists, and protection experts.
This is engineering — not marketing.
And when paired with a 2.4 MW PCS, the system operates around ~0.5C, ensuring thermal stability, lifecycle performance, and grid compliance.
BESS design is about:
• Voltage architecture
• Series & parallel optimization
• Current balancing
• Protection coordination
• Thermal management
• Lifecycle strategy
• Grid code compliance
It is a power plant in a container — not just batteries inside steel walls.
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31/01/2026

31/01/2026

Gulab Devi Teaching Hospital Auditorium Building, Plate Fabrication
Credit : Vista Studio

13/11/2025

The esGrid utility-scale energy storage system with lithium batteries as the energy storage medium, cluster control architecture and All-in-one design to fulfill functions such as smoothing the output fluctuations of renewable energy, frequency regulation, capacity leasing, load shifting, and standby power supply, thereby enhancing the stability of the power grid.

Pioneering the "cluster controlled" architecture

Standard container for oversea transportation

3D thermal system design

"4+1" safety design

13/11/2025

The Static Synchronous Condenser (E-STATCOM) is one of the Sieyuan grid-forming series equipments which is based on MMC topology, with supercapacitors on the DC side . With the growing pe*******on of the new energy integrated into the new-type power system, such as high proportion of Renewable Energy and high proportion of Inverter-Based Resources (IBRs), it leads to three major challenges:
➢ Voltage Instability
➢ Frequency Instability
➢ Wideband Oscillations
E-STATCOM provides reactive power support and inertia support functions for the power grid, which can effectively solve the power quality problems faced in the new-type power systems.With the self-developed advanced grid-forming control algorithm, the E-STATCOM can perfectly cover all the functions of traditional rotating Synchronous Condenser , such as faster transient response, more controllable and stable voltage and frequency regulation, smarter and more economic. Furthermore, the E-STATCOM can even provide extensible functions such as broadband oscillation damping, impedance reshaping, and active power filtering.

Improvingth estability of the power system

High reliability

Smarter and more economic

12/09/2025

12/09/2025

PEC License Renewal for 2025–26 – Ready to Serve Your Engineering Needs
We are pleased to inform you that Unirazz Services has successfully renewed its Pakistan Engineering Council license for the year 2025–26 .
As a PEC-licensed contractor, we are fully authorized to execute works under the categories and disciplines covered by our license. We invite you to contact us for any engineering, construction, or infrastructure projects that align with PEC requirements.
📞 Get in Touch:
For inquiries or to discuss your upcoming projects, please reach out to us directly. We look forward to partnering with you and delivering reliable, PEC-compliant solutions.
— Unirazz Services Team