Invention Grant
- Patent Title: Software-controlled electronic circuit for switching power to a three-phase motor
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Application No.: US15423749Application Date: 2017-02-03
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Publication No.: US10027269B2Publication Date: 2018-07-17
- Inventor: Zuher Naim Khalaf , Jeffrey Scott Aranowski
- Applicant: Newfrey LLC
- Applicant Address: US CT New Britain
- Assignee: Newfrey LLC
- Current Assignee: Newfrey LLC
- Current Assignee Address: US CT New Britain
- Agency: Harness, Dickey & Pierce, PLC
- Main IPC: H02P27/08
- IPC: H02P27/08 ; H02P25/18 ; H02P21/06 ; H02P23/00

Abstract:
The circuit for controlling a rotating three-phase motor of the type having three interconnected motor coils each corresponding to one of three phases employs a plurality of switching circuit components, each connected to the motor to supply current to one of the coils. A signal generator circuit produces in synchronism with the rotation of the motor a variable duty cycle pulse-width modulated signal for each of the switching circuit components. A logic gating circuit is coupled to the signal generator circuit and to the switching components. The logic gating circuit is operative to cause the switching circuit components to selectively place pairs of motor coils in current conducting states such that when the variable duty cycle pulse-width modulated signals are each concurrently in the same logical on-off state, the logic gating circuit supplies a logical off state to each of the switching circuit components.
Public/Granted literature
- US20170201203A1 Software-Controlled Electronic Circuit for Switching Power to a Three-Phase Motor Public/Granted day:2017-07-13
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