Working principle of three phase rectifier circuit
Compared with single-phase rectifier, the output voltage ripple of three-phase rectifier is smaller, and the low harmonic frequency is higher. The filtering effect is good by inductor.
Main uses
It has been widely used in vvvt, SMPS, UPS, inverter welding machine, servo motor drive amplifier and other frequency conversion equipment with DC link, and has achieved certain results.
The "three-phase Fred rectifier bridge switch module" (mfst) composed of fast recovery diode (frrd) instead of common rectifier tube can be used as the above voltage type inverter, but it can greatly reduce the noise of the inverter up to 15dB. This kind of effect will directly affect the design of capacitor and inductor in the EMI filter circuit of the inverter, and greatly reduce its specification, thereby reducing the design cost The cost of the equipment and the volume of the equipment are reduced, so that the performance of the inverter is improved, the operation is stable, safe and reliable, and the inverter can meet the national EMI standard.
The thyristor module is used to replace the mechanical contactor for short-circuit charging resistance, which increases the operation period of the inverter and makes the operation more stable, safe and reliable. At present, even if Fred is more expensive than ordinary rectifiers and the module production process will be more complicated, considering the above characteristics comprehensively, with the gradual decrease of Fred chip cost and the gradual maturity and large-scale production of module manufacturing process, this kind of "three-phase Fred rectifier bridge switch module" will be developed rapidly and widely used.
The above is the explanation of three-phase rectifier module by the rectifier module manufacturer semipower. Semipower is a power semiconductor power module supplier specialized in power electronics technology. It provides the formulation, production, processing and production of semiconductor power modules for enterprises and companies. In addition, it also provides the processing business of supplied materials or OEM for companies. The main products are: IGBT module, thyristor module (SCR) module, ultra fast recovery epitaxial diode module, single-phase rectifier bridge module, three-phase rectifier bridge module, rectifier diode module, Schottky diode component power module and other power semiconductor electronic components.
