Here is an explanation of the main circuits in commercial induction cookers as provided by Guangdong PXKITCHEN:
Surge voltage absorption: The three-phase rectifier bridge rectifies the result of the analysis of the direct current system working voltage. The electrolytic capacitors C1 and C2 in the large data environment capacity absorb various problems such as spikes and surges in the power supply voltage, which are then supplied to the V1-V4 IGBT power control management module. Due to the important role of VD5 in isolation protection, C1 and C2 only absorb surge and spike voltages, while the high-frequency electronic information security circuit design work current can be found bypassing C3.
Overvoltage protection: If the AC 380V experiences abnormal overvoltage for an extended period and rises above AC 600V, the high-back voltage regulator diodes VD1-VD4 will break down and short circuit, ensuring the safety of the power supply by tripping. The parallel connection of the regulator tubes is to provide sufficient short-circuit fault current when the short-circuit fault current may be broken through.
Overcurrent rate circuit breaker and overcurrent protection: The power tubes V1-V4 form a full bridge circuit. If the current passing through the heating coil L increases, or V1-V4 can form a straight-through in a certain period of time causing a short circuit in the working power supply, the transformer B2 sends a signal to the control system circuit. The hardware circuit first closes the excitation pulse to cut off V1-V4, and at the same time sends a signal to the microcontroller, which then performs other corresponding actions under the guidance of the microcontroller. During product debugging, short the heating control coil L during the experimental process, and then turn on the 380V power supply to verify the function of the overcurrent protection system.
These are the main circuits in commercial induction cookers. We hope this information is helpful. For more tips and knowledge about kitchen equipment, please visit the Guangdong PXKITCHEN Equipment official website.
