Hydroelectric turbine generator control systems, using Power-io.

In South America, SEMI is a premier manufacturer of turbines and control systems for power plants. The pictures below show a typical 6MW Francis Turbine system. Every turbine requires a current driver for the generator exciter circuit. This is provided using the Power-io HDD-9V30E which can switch up to 900 VDC and up to 30amps each.

The critical application parameters include:

• High precision, high speed, PWM capability when connected to the PLC control system.
• Extremely high performance reliability, especially at temperatures up to 50 degrees C (122F) without air conditioning assistance.
• Ability to have a master PCB installed above the Power-io unit for additional functions.

The OEM packages the Power-io, PCB, heat sink and related components into one complete unit for ease of local installation.