Electrodialysis power supply (rectifier)

Product Introduction:

The controllable silicon electrodialysis power supply adopts three-phase AC power supply, and the output is composed of a six phase five column rectifier transformer and a six phase rectification system, forming a six phase rectification voltage and current regulation. After LC filtering, high-quality DC power is output to provide to the load for operation. Applied in fields that require high-quality DC power supply; The power supply has the function of stabilizing voltage and current output control. The system has complete protection functions, strong anti-interference ability, and high reliability. Simple operation, user-friendly design, high degree of automation, power supply design and manufacturing follow IEC international electrical related technical standards and national industry technical standards.

1. Adopting a modular structure, independent operation display, electrostatic spraying protection, beautiful appearance, and sturdy structure.

2. The selection of components has a large margin, strong load-bearing capacity, and long service life.

3. The circuit is highly integrated, with strong anti-interference ability and low failure rate.

4. It has functions such as soft start, phase loss protection, overvoltage and undervoltage protection, overcurrent protection, overheating protection, and electronic peak current detector; Touch screen display.

Working Principle:

1. The three-phase 380V AC power supply of the main circuit is controlled by an air switch and AC contactor to turn off and overcurrent protection circuit, which controls the power supply of the whole machine. The protection signal can be used to control the AC contactor to turn on and off, forming the whole machine protection and zero power consumption in the shutdown state. Then, the AC power supply is sent to the primary side of the rectifier transformer. The alternating magnetic field generated by inductive coupling forms a six phase AC voltage in the isolated secondary winding, which enters the three-phase fully controlled bridge thyristor rectifier circuit and filter circuit composed of thyristor filter reactors. The thyristor is controlled by the thyristor trigger circuit to make the output DC voltage infinitely adjustable, and the low ripple DC power generated is provided to the load.

2. The control unit consists of a self-locking circuit composed of AC contactors and control buttons to control the on/off of the power supply, and an overcurrent protection circuit composed of current transformers, current relays, and relays to control the main AC contactor, forming a complete on/off protection control unit.

3. The core circuit of the trigger control unit is composed of KCD-3MC dedicated integrated trigger circuit board designed and produced by our company. Using the German Siemens specialized integrated circuit TCA785, the given signal and feedback signal are compared through a PI regulated operational amplifier circuit and processed by TCA785 to provide accurate trigger signals to the thyristor, including functions such as current stabilization, voltage stabilization, soft start, phase loss protection, and overvoltage/undervoltage protection.

Technical Specifications：