In this video, Andy from Aaki Corp continues the exploration of induction motor cross-sections, focusing on the impact of variable frequency drives (VFDs) on motor shaft voltages.
Learn how VFDs, using technologies like IGBTs, alter the sine wave and affect the motor's performance. Discover the challenges of capacitive coupling and induced eddy currents on the rotor, leading to unpredictable voltages.
Understand how these voltages, when coupled with bearing configurations, can cause electrical discharge machining, damaging bearings over time. Explore the concept of motor shaft grounding modules as a solution to protect bearings from these damaging voltages.
Chapter 1: [0:36] Induction Motor History
Chapter 2: [1:00] Variable Frequency Drive
Chapter 3: [3:50] VFD Voltages Feed into Motor
Chapter 4: [5:09] Capacitive Coupling
Chapter 5: [6:51] Positive Shaft Voltage, Negative Outer Race Voltage
Chapter 6: [8:38] Solution - Motor Shaft Grounding
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Get info on industrial motor shaft grounding:
www.aaki.ca/product-category/motor-shaft-grounding/
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