LDA15F-15-M

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AC/DC converters are one of the most important components of electric motor controllers. They enable conversion of an alternating current (AC) into a direct current (DC) that is then used to power electric motors. The most commonly used AC/DC converters are the LDA15F-15-M series, which are three-phase converters used in motor controllers. This article will discuss the application fields and working principle of the LDA15F-15-M series.

Application Fields

The LDA15F-15-M series is a three-phase AC/DC converter, and is therefore suitable for powering electric motors of three-phase design. Its versatility in application makes it ideal for a variety of uses, including electric hoists, servo-motors, welding machines, textile-machines, and many more applications. The LDA15F-15-M offers a range of features that make it suitable for many applications, including a thermal overload protection, a waterproof design, a short-circuit protection, a free-air cooling operation, low harmonic distortion, and high efficiency.

Working Principle

The LDA15F-15-M series works by converting the three-phase AC input voltage into a three-phase DC output voltage. This is achieved through a three-phase rectifier bridge, which is used to convert the AC input voltage into a three-phase DC voltage. This DC voltage is then filtered by an inductor, resulting in a clean, ripple-free DC output voltage. The rectifier bridge is then used to convert the filtered DC voltage into an AC voltage, which is then fed through a PWM rectifier bridge and is used to power the DC motor.

In order to ensure a smooth and efficient power transfer, the LDA15F-15-M series is designed with a maximum allowable phase angle variance of 3°. This allows the converter to be used in applications where the supply voltage can vary, such as in applications where the supply voltage is generated by an inverter. The LDA15F-15-M series also incorporates active power factor correction, which ensures a good power factor of around 0.95, and provides improved power transfer.

Conclusion

The LDA15F-15-M series is a versatile three-phase AC/DC converter with numerous features such as a thermal overload protection, a waterproof design, a short-circuit protection, a free-air cooling operation, low harmonic distortion, and high efficiency. It is suitable for a range of applications, including electric hoists, servo-motors, welding machines, and textile-machines. Its active power factor correction ensures good power factor and improved power transfer.

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