GBL08-M3/45

Series:	--
Packaging:	Tube
Part Status:	Active
Diode Type:	Single Phase
Technology:	Standard
Voltage - Peak Reverse (Max):	800V
Current - Average Rectified (Io):	4A
Voltage - Forward (Vf) (Max) @ If:	1V @ 2A
Current - Reverse Leakage @ Vr:	10µA @ 800V
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	4-SIP, GBL
Supplier Device Package:	GBL

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Diodes - Bridge Rectifiers: GBL08-M3/45 Application Field and Working Principle

The GBL08-M3/45 is a powerful and efficient three-phase full-controlled bridge rectifier produced by Kipp&Zonen. In the field of energy distribution, bridge rectifiers are highly appreciated for their ability to convert three-phase alternating current into unidirectional direct current. It is relatively inexpensive, easy to maintain and reliable in operation.

Application Field

GBL08-M3/45 bridge rectifiers are widely used in varied applications requiring three-phase power. Typical applications include static power conversion, DC motor drives, AC motor drives, lighting, battery charges, charging systems, solar energy, etc. It is mainly designed for applications in medium voltage power distribution networks and is suitable for medium to high power systems. The bridge rectifier is also used in medium voltage photovoltaic inverters.

Working Principle

A GBL08-M3/45 bridge rectifier has three-phase AC input terminal and a DC output terminal. The bridge rectifier uses four diodes in a bridge configuration to convert three-phase AC power into DC power. Each of the three phase voltage inputs is connected to one side of the rectifier while the other side is connected to the DC output terminal. The diodes alternately conduct and block the flow of current providing a unidirectional output. During the positive half cycle, the top left and right diodes (diodes 1 and 4) are forward biased, whereas the bottom diodes (diodes 2 and 3) are reverse biased. This allows current to flow from the top left diode (diode 1) through the load and to the top right diode (diode 4). During the negative half cycle, the diodes switch roles, so now the bottom left diode (diode 2) and the bottom right diode (diode 3) become forward biased, while diodes 1 and 4 become reverse biased. The rectifier has two operating modes: “Controlled" and "Non-Controlled". In the "Controlled" mode, all diodes are driven by external control signals. This allows the external signals to control the current and voltage of the output. The "Non-Controlled" mode is the normal rectifier mode of operation.

Advantages

The GBL08-M3/45 bridge rectifier provides several advantages over other types of rectifiers. First of all, the bridge rectifier has a staggered gate drive which reduces the current and voltage inductive spikes, as well as thermal losses. Secondly, the rectifier\'s inherent three-phase architecture helps reduce harmonic distortion and improve voltage regulation, compared to two-phase rectifiers. Lastly, the rectifier is designed to use fewer components, which reduces the cost of installation and maintenance.

Conclusion

The GBL08-M3/45 bridge rectifier is a powerful and efficient three-phase full-controlled rectifier used in various applications. This rectifier provides several advantages over other types of rectifiers such as a staggered gate drive, reduced harmonic distortion, and improved voltage regulation. The GBL08-M3/45 bridge rectifier is an ideal choice for applications in energy distribution.

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