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Title:	Application Note Motor Bearing Current and 3-Level Inverter
Number:	AN.G7.02
Date:	06/22/2005
Description:	This paper describes the common-mode voltage in inverter-driven AC motors by comparing two-level and three-level inverters. The relationship among common-mode voltage, motor shaft voltage, and bearing currents are discussed using common-mode equivalent capacitances inside the motor. Test results of shaft voltage and bearing currents prove that three-level technology adopted in the Yaskawa G7 drive has significant advantages over the two-level inverter with regards to shaft voltage and bearing currents, which result in reduced bearing damage.
Rev Number:	Rev: 05-06
Language:	English
Doc Type:	Application Documents
Doc SubType:	Application Note

Product Information

Product Group:	Inverter Drives
Product Line:	G7 Drive