Invention Grant
- Patent Title: Converter pulse width modulation strategies for three phase regenerative drives
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Application No.: US15832216Application Date: 2017-12-05
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Publication No.: US10381968B2Publication Date: 2019-08-13
- Inventor: Ismail Agirman
- Applicant: OTIS ELEVATOR COMPANY
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: Cantor Colburn LLP
- Main IPC: H02P11/04
- IPC: H02P11/04 ; H02P27/08 ; H02P3/14 ; H02P27/16 ; H02P11/00

Abstract:
A three-phase regenerative drive employing multiple converter pulse width modulation (PWM) strategies. The drive includes a three-phase converter having inputs for connection to a three-phase AC source, the three-phase converter having three phase legs, a DC bus operably connected to the three-phase converter wherein the three phase converter is configured to direct current from the three-phase AC source to the DC bus, and a three-phase inverter operably connected to the DC bus and a motor, the three phase inverter configured to draw current from the DC bus and provide three phase command signals to the motor. The three-phase converter employs a first PWM strategy to supply current to the DC bus, and the converter employs a second PWM strategy to supply current to the DC bus if a total current in the three phase legs exceeds a selected threshold.
Public/Granted literature
- US20190173410A1 CONVERTER PULSE WIDTH MODULATION STRATEGIES FOR THREE PHASE REGENERATIVE DRIVES Public/Granted day:2019-06-06
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