Invention Grant
- Patent Title: Diagnostics for systems including variable frequency motor drives
- Patent Title (中): 包括变频电机驱动系统的诊断
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Application No.: US14479485Application Date: 2014-09-08
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Publication No.: US09448271B2Publication Date: 2016-09-20
- Inventor: Chuan Yan , Raymond Walter Rite , William David Daugherty, III
- Applicant: Trane International Inc.
- Applicant Address: US NJ Piscataway
- Assignee: Trane International Inc.
- Current Assignee: Trane International Inc.
- Current Assignee Address: US NJ Piscataway
- Agency: Taft Stettinius & Hollister LLP
- Main IPC: G01R31/34
- IPC: G01R31/34 ; G01R31/02 ; G01R31/42 ; G01R31/04 ; H02M1/42 ; H02M7/5387 ; H02M1/00
Abstract:
One embodiment is a diagnostic method for a system including setting a first diagnostic code based upon a condition of a DC bus of a variable frequency drive during a first drive state, setting at least one additional diagnostic code based upon a condition of at least one motor phase current during a second drive state, outputting first diagnostic information indicating a malfunction of the variable frequency drive if the first diagnostic code indicates a first error, and outputting second diagnostic information indicating a malfunction of a motor or a connector coupling the motor and the drive if the at least one additional diagnostic code indicates a second error.
Public/Granted literature
- US20150070047A1 DIAGNOSTICS FOR SYSTEMS INCLUDING VARIABLE FREQUENCY MOTOR DRIVES Public/Granted day:2015-03-12
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