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Smart Three-Phase Bridge Converter Controller

This is an industrial power converter and controller built for sensitive, professional applications in power and power-electronics systems. It is offered in two versions that share the same three-phase bridge core.

In the telecom version, it converts AC into stable 48 V DC and, with intelligent battery charging, keeps telecom equipment powered without interruption. In the bridge-controller version, it converts DC into a controlled three-phase AC output to drive and regulate three-phase motors, inverters and industrial power systems.

How does it work?

At its heart is a three-phase bridge that processes all three phases together, so the result is far smoother and more stable than single-phase conversion:

• Six-pulse conversion: the three-phase bridge combines the R, S and T phases into a low-ripple DC bus (as shown above) — inherently smoother than single-phase rectification.
• Precise control loop: voltage, current and frequency are regulated intelligently and held stable against grid fluctuation and changing load.
• Two operating modes: AC→DC (stable 48 V for telecom) or DC→controlled three-phase AC (to drive motors and inverters).
• Intelligent battery charging: protects the battery, prevents deep discharge and prolongs its life.
• Uninterrupted transfer: seamless, zero-gap transfer keeps critical equipment running during a power outage.

What goes wrong without a proper converter?

An unsuitable or low-grade three-phase converter can seriously undermine a whole installation:

• Harmonic distortion and DC ripple that disturb sensitive equipment and pollute the supply.
• Unstable output voltage or frequency, causing malfunction of connected devices.
• Torque ripple and overheating in three-phase motors, shortening their life.
• Improper battery charging — deep discharge, sulfation and reduced battery life.
• Low efficiency and excess heat, raising energy costs and cooling load.
• Service interruptions when transfer at power loss is not truly seamless.

Our advantages

• Industrial design, high efficiency and intelligent control with outstanding output stability
• Optimized, low-loss switching
• Uninterrupted (Zero-Gap) transfer for mission-critical systems
• Supports SLA and lithium batteries in specific models
• Modular design in a standard 19-inch rack for easy installation and operation

Why buy from Keyhan Energy?

Keyhan Energy supplies this controller with technical support and pre-purchase consultation, so you get exactly the right configuration for your application. Contact us for a quote and technical guidance.