Secrets of Induction Cooker Power Regulation

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In daily life, the induction cooker can be called the all-rounder in the kitchen. From slow-cooked to stir-fried, induction cookers have always been able to control the fire precisely, making cooking a breeze. But have you ever wondered what science lies behind this seemingly simple Firepower adjustment? Today, let us go into the world of induction cookers, to explore the principle of power regulation.

Ⅰ.Core Circuit System

The core circuit structure of the induction cooker is like a highly precise energy hub, and each part cooperates closely to lay a solid foundation for power regulation. Rectifier circuit is the hub of the energy conversion station, it will be common in the home to convert alternating current into direct current, for the follow-up circuit to provide a stable source of energy. The filter circuit deeply filters the rectified DC current to remove the clutter interference, ensure that the current is pure and free of impurities, and escort the accuracy of power regulation. The inverter circuit is the energy conversion engine in the hub, which converts the purified DC to high frequency AC again. The process is crucial because a high-frequency alternating current can drive a coil to produce an alternating magnetic field, allowing the cooker to heat efficiently. The control circuit is the command brain of the whole hub, which accurately regulates the working state of each circuit element according to the user’s operation instructions to ensure that the power regulation is carried out in an orderly manner.

Ⅱ.Realization Path of power regulation technology

Induction Cooker Power Regulation is mainly realized by pulse width modulation (PWM) technology and frequency regulation technology.PWM technology: PMM technology by changing the width of the pulse signal to adjust the power. The control circuit outputs a series of pulse signals with adjustable width to control the on-time of IGBT. When the pulse width increases, the IGBT conduction time becomes longer, the electric energy obtained by the coil disk increases, the alternating magnetic field intensity generated increases, the energy absorbed by the pot increases, and the power increases; on the contrary, the pulse width decreases, the turn-on time of IGBT is shortened and the power is reduced. This adjustment method has fast response speed and high precision, and can realize the fine control of power.

Frequency regulation technology: Frequency Regulation technology by changing the inverter circuit output frequency of alternating current to regulate power. When the frequency increases, the transformation speed of the alternating magnetic field is accelerated, and the generation and change of the eddy current in the pot are also accelerated, resulting in the heating speed of the pot and the increase of the power; when the frequency decreases, the heating speed slows down, reduced power.

Ⅲ.Synergy of key components

In the process of power regulation of induction cooker, each key component plays its own role and cooperates closely.

1. Coil disc: a coil disc is an energy emitter that produces an alternating magnetic field that efficiently converts electrical energy into heat and transfers it to a cooker. High-quality coil plate can produce a uniform and strong magnetic field, to ensure that the pot evenly heated, while improving the sensitivity of power regulation.

2. IGBT module: IGBT module is the size of a fingernail, but it has a huge mission, it needs to withstand the instantaneous high voltage of 2000V and hundreds of amps of current shock. Under the command of the control circuit, it can open and close quickly and accurately, and accurately control the on-off of the current.

3. Heat dissipation fan: the heat dissipation fan takes away the heat generated in the working process of IGBT and other components in time to ensure that they operate in a safe temperature range.

Conclusion

When we understand the principle of induction cooker power regulation, can not help but for the power of science and technology. From the precise circuit structure, to the flexible power regulation technology, to the coordination of key components and the precise control of efficiency and safety, each link embodies the wisdom and painstaking efforts of countless researchers. It is these seemingly small but crucial technological details that make the induction cooker an indispensable tool in our kitchens, bringing convenience, efficiency and safety to our lives.