ABB AC10272001R0101 5SHY35L4520 | IGCT Module

Description

Main Features High voltage and large current handling capacity: It can withstand a blocking repetitive peak voltage of 4500V, and the load current can reach up to 4000A. It can be used in power control scenarios with high voltage and large current. Buffering-free turn-off characteristic: It has a high buffering-free turn-off rating and can achieve reliable turn-off without a buffer circuit, reducing the complexity and cost of the circuit. Medium-frequency optimization: It is optimized for medium-frequency applications and has good performance in medium-frequency power conversion and control. High electromagnetic immunity: It has strong anti-electromagnetic interference ability and can work stably in complex electromagnetic environments. Simple control interface and status feedback: The control interface is simple, and it has a status feedback function, which is convenient for system integration and monitoring. Optional AC and DC power supply: It supports AC or DC supply voltage and can adapt to different power supply conditions. Series connection available: It provides the option of series connection, which can meet the applications with higher voltage or current requirements.

Technical Parameters Blocking repetitive peak voltage: 4500V. Average on-state current: 4000A. Forward surge current: 32kA. Load current: 1.7kA. Maximum load current: 2.67kA. Operating temperature: From 0°C to 60°C. Ambient humidity: From 5% to 95%. Program capacity: 16MB. Power supply: 24VDC. Application Fields Industrial drive: It is used in the variable frequency drive systems of large motors, such as rolling mills, fans, water pumps, etc., to achieve efficient speed regulation and control of the motors, and improve the efficiency and energy-saving effect of industrial production. Power system: In power system devices such as high-voltage direct current transmission and static var compensation, it is used to achieve the conversion and control of electrical energy, and improve the stability of the power system and the quality of electrical energy. Medium-frequency heating: In medium-frequency induction heating equipment, as a power switching device, it converts the power frequency power supply into a medium-frequency power supply to provide energy for the heating load, and is widely used in fields such as metal heat treatment and forging. New energy: In new energy power generation systems such as wind power generation and photovoltaic power generation, it is used in devices such as inverters and converters to achieve the conversion and grid connection control of electrical energy, and improve the efficiency and reliability of new energy power generation.

For thyristors with and without buffered turn-off characteristics (such as the ABB 5SHY35L4520 with buffered turn-off characteristics and general thyristors that require a buffer circuit), there are different precautions in application: Thyristors with unbuffered turn-off characteristics: Simplified circuit design: Since no additional buffer circuit is required, the selection and layout of relevant components can be reduced during circuit design, reducing costs and circuit complexity. However, it should be noted that although a buffer circuit is not needed, it is still necessary to ensure that other parts of the main circuit (such as the power supply, load, etc.) are reasonably designed to meet the operating requirements of the thyristor. Switching frequency limitation: Although this type of thyristor is optimized for medium-frequency applications, in practical applications, the switching frequency still needs to be strictly controlled within its rated range. Excessively high switching frequency may cause the thyristor to overheat or exceed its turn-off capability limit, affecting its performance and service life. Electromagnetic compatibility (EMC): Although it has high electromagnetic immunity, in a complex electromagnetic environment, it may still be affected by external interference. Therefore, when installing and wiring, appropriate EMC measures such as shielding and grounding should be taken to ensure the stable operation of the thyristor and the entire system. Heat dissipation management: Under the operating conditions of high voltage and large current, the thyristor will generate a certain amount of heat. It is necessary to ensure good heat dissipation conditions, such as installing a suitable heat sink and ensuring heat dissipation space, etc., to prevent the thyristor from being damaged due to overheating. Quality of control signals: Since the control interface is relatively simple, there are high requirements for the accuracy and stability of the control signals. It is necessary to ensure that the parameters of the control signals, such as amplitude, frequency, rising edge, and falling edge, meet the requirements of the thyristor to avoid misoperation or damage of the thyristor caused by abnormal control signals. Thyristors with buffered turn-off characteristics: Buffer circuit design: The design of the buffer circuit is crucial. According to the parameters of the thyristor (such as rated voltage, current, switching speed, etc.) and application requirements, components such as buffer capacitors, resistors, and diodes should be reasonably selected, and correct layout and connection should be carried out to ensure that the buffer circuit can effectively suppress the spikes of voltage and current. Component aging and failure: Components in the buffer circuit (such as capacitors and resistors) may age or fail over time, affecting the buffering effect. Therefore, it is necessary to regularly inspect and maintain the buffer circuit and replace aging or damaged components in a timely manner. Matching with the main circuit: The buffer circuit should be matched with other parts of the main circuit (such as the power supply, load, thyristor, etc.) to ensure the performance and stability of the entire system. For example, the parameters of the buffer circuit should be adapted to the switching characteristics of the thyristor to avoid overvoltage or overcurrent situations. Increased cost and volume: The presence of the buffer circuit will increase the cost and volume of the system. When designing, it is necessary to comprehensively consider the balance between cost and performance and select an appropriate buffer circuit solution according to actual application requirements. Heat dissipation requirements: In addition to the heat dissipation requirements of the thyristor itself, components in the buffer circuit (such as resistors) will also generate heat during operation. The heat dissipation problem of the entire system needs to be considered to ensure that all components work within an appropriate temperature range.

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