Invention Grant
- Patent Title: Electronic method for starting a compressor
- Patent Title (中): 启动压缩机的电子方法
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Application No.: US12158440Application Date: 2006-01-20
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Publication No.: US07679307B2Publication Date: 2010-03-16
- Inventor: Eugene L. Mills, Jr. , Rajendra K. Shah , Lynn A. Turner
- Applicant: Eugene L. Mills, Jr. , Rajendra K. Shah , Lynn A. Turner
- Applicant Address: US CT Farmington
- Assignee: Carrier Corporation
- Current Assignee: Carrier Corporation
- Current Assignee Address: US CT Farmington
- Agency: Marjama Muldoon Blasiak & Sullivan LLP
- International Application: PCT/US2006/002446 WO 20060120
- International Announcement: WO2007/089140 WO 20070726
- Main IPC: H02P1/42
- IPC: H02P1/42

Abstract:
A motor starting apparatus (10) includes a motor starting relay (112) to switch a motor starting capacitor (110) into a motor circuit across a run capacitor (111). The system control (116) includes an electronic voltage measurement circuit to measure a winding voltage (113, 114) of the motor winding (102, 103). The system control (116) also includes a microprocessor to run an algorithm that causes the system control to switch the starting capacitor (110) out of the motor circuit when a measured winding voltage (113, 114) exceeds a winding voltage threshold. A method to start a motor includes the steps of determining a motor winding voltage (113, 114) threshold; closing the motor starting capacitor relay (112) when needed; closing a contactor (108, 109) to supply power to the motor starting apparatus and the motor circuit; measuring a winding voltage (113, 114); comparing the measured winding voltage (113, 114) to the voltage threshold; and opening the starting capacitor relay (112) when measured winding voltage (113, 114) exceeds the voltage threshold indicating that the motor has been started.
Public/Granted literature
- US20090001921A1 Electronic Method for Starting a Compressor Public/Granted day:2009-01-01
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