GE DS200SHVMG1A EX2000, SCR High Voltage Interface Card
⁦GE DS200SHVMG1A EX2000, SCR High Voltage Interface Card⁩ - الصورة ⁦2⁩

GE DS200SHVMG1A EX2000, SCR High Voltage Interface Card

    • SCR Firing Control: The primary role of the DS200SHVMG1A is to generate and transmit precisely timed firing pulses to the gates of the SCRs in the power bridge. The timing of these pulses, known as the firing angle, is directly controlled by the main processor and determines the amount of power delivered to the generator’s field, which in turn regulates the output voltage.
    • High-Voltage Isolation: A key safety feature of this card is its ability to provide galvanic isolation between the sensitive control boards (like the DS200SDCC or DCFB) and the high-voltage, high-current power section. This protects the control system from electrical noise and voltage spikes that are common in high-power applications.
    • Signal Conversion: The board is responsible for converting feedback signals from the power bridge into a format usable by the control system. This includes converting shunt signals (-500 mV to +500 mV) into differential frequency outputs (0 to 500 kHz) that are sent to the DCFB or SDCI boards for measurement and regulation. It also provides attenuation for AC and DC bridge voltages.
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الوصف

The GE DS200SHVMG1A is an SCR High Voltage M-Frame Interface Board used in GE’s EX2000 Excitation System and Mark V series industrial drives. It’s a critical component that acts as the communication link between the low-voltage control electronics and the high-voltage SCR (Silicon Controlled Rectifier) power bridge.

 

Technical Breakdown ⚡️

 

The board’s function is fundamental to the precise and safe control of high-power systems. It effectively translates the commands from the main control board into actions for the SCRs.

  • SCR Firing Control: The primary role of the DS200SHVMG1A is to generate and transmit precisely timed firing pulses to the gates of the SCRs in the power bridge. The timing of these pulses, known as the firing angle, is directly controlled by the main processor and determines the amount of power delivered to the generator’s field, which in turn regulates the output voltage.
  • High-Voltage Isolation: A key safety feature of this card is its ability to provide galvanic isolation between the sensitive control boards (like the DS200SDCC or DCFB) and the high-voltage, high-current power section. This protects the control system from electrical noise and voltage spikes that are common in high-power applications.
  • Signal Conversion: The board is responsible for converting feedback signals from the power bridge into a format usable by the control system. This includes converting shunt signals (-500 mV to +500 mV) into differential frequency outputs (0 to 500 kHz) that are sent to the DCFB or SDCI boards for measurement and regulation. It also provides attenuation for AC and DC bridge voltages.
  • M-Frame Specialization: The M in SHVM signifies that the card is designed specifically for M-frame drives, which are a class of GE drives. This indicates its use in a specific power and control architecture.

In essence, the DS200SHVMG1A ensures that the control system’s commands are safely and accurately executed by the high-power SCRs, enabling the EX2000 to maintain stable and reliable operation in challenging industrial environments.

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