Introduction of IGBT main control PCB board:Mainly dominated by high frequency induction heating main control board and 2 drivers, the high frequency board adopts SG3525A as PWM pulse generation, the output pulse frequency range is 20KHZ-60KHZ, the pulse spacing is 180 degrees between each other, the overcurrent protection time Self-regulation. It can be applied to IGBT full-bridge inverter parallel resonant induction heating equipment chopper transformer voltage regulation.
The structure of IGBT main control board:The IGBT main control board is mainly composed of a panel, a main control board and two drive boards.
IGBT main control board is divided into two kinds of low frequency main control board and high frequency main control board.
Brief description of high frequency main control PCB board:
Because of the high frequency power induction heating equipment, rectifier tubes have been used as switching components for many years. Promote short rectifier cycle, high efficiency and low (50% -70%) load reliability is poor, the output voltage of the inverter intermittently oscillates during the whole process of light load operation (voltage inverter), so the high frequency power It is urgent to replace rectifier components with IGBT semiconductor components. Induction heating equipment using IGBT semiconductor components has high efficiency and simple power circuit. The production and application are relatively convenient. The induction heating power supply with large IGBT power is used to heat the product workpiece quickly, which is easy to control, and the quality of the carburizing process is reliable. Therefore, it is a wise choice to use IGBT to complete the high-power induction heating power supply. The KS series products and KP series products produced by our company have data open, adjustment-free, low pulse harmonic distortion, strong anti-interference, centralized operation, fast dynamic response time, and various state maintenance Instructions.Power range: 15KW-120KW, the control board has less wiring, centralized operation, no adjustment, and the power supply voltage is three-way communication, AC dual 18V / 1A and four 22V / 0.5A power supplies for the full-bridge inverter IGBT drive circuit Present the power supply. With over-current, over-pressure, but water, high frequency, low frequency, a variety of status indicators, and show the switch-type Hall maintenance interface, this board can be combined with chopper board and drive board to assemble IGBT high frequency induction heating equipment.
Features of IGBT high frequency control board:
The IGBT high-frequency control board mainly uses SG3525A as PWM pulse generation. The output pulse frequency range is 20KHz-60KHz, the pulse spacing is 180 degrees from each other, and the overcurrent protection time can be adjusted independently. Applicable to IGBT full-bridge inverter parallel resonance induction heating equipment radio broadcast power adjustment. Power range: 10KW-120KW, the control board has less wiring, centralized operation, no adjustment, and the power supply voltage is three-way communication AC dual 18V / 1A and four 22V / 0.5A power supplies during operation. With over-current, over-pressure, but water, multiple status indicators, and show the switch-type Hall maintenance interface and linear Hall maintenance interface, there is a full-bridge inverter IGBT drive circuit, this board can be immediately assembled IGBT high-frequency induction heating equipment.