AC / variable frequency motor systems demand controlled 3-phase power, efficient switching, accurate feedback, and protection across rectifier, DC-Link, and inverter stages. AC motor drives and VFDs must generate precisely controlled 3-phase power to regulate motor speed and torque, while managing switching noise.
Enabling AC motor drives and VFDs are Vishay's power inductors, which help smooth current flow and reduce electrical noise within motor-drive power stages, while optocouplers help safely isolate control and power circuitry. Shunt resistors provide accurate current sensing, thermistors monitor drive temperature, and film capacitors filter and stabilize the DC bus. Together, these technologies support the reliable and efficient operation modern motor drives depend on.
Behind AC motor drives and VFDs is The DNA of tech.®
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