Multiple PWM cycloconverter

• US 6,771,524 B2
• Filed: 12/23/2002
• Issued: 08/03/2004
• Est. Priority Date: 12/27/2001
• Status: Expired due to Fees

• Current Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Original Assignee: Otis Elevator Company (Otis Worldwide Corp.)
• Inventors: Miguchi, Yasuhiko
• Primary Examiner(s): Riley, Shawn
• Application Number:
  US10/328,627
• Publication Number:
  US 20030137855A1
• Time in Patent Office: 589 Days
• Field of Search: 363/148, 363/149, 363/127, 363/157, 363/123, 363/131, 363/159
• US Class Current: 363/149
• CPC Class Codes: H02M 5/271 from a three phase input voltage

Abstract

A multiple PWM cycloconverter or matrix converter uses reactors to connect various phase output terminals in parallel.

Claims

1. A multiple PWM cycloconverter having multiple converters, the converters having multiple bi-directional switches, inputs, and outputs, each output having an output phase associated therewith, the multiple PWM cycloconverter comprising:

a reactor for each one of the multiple outputs of each converter, each reactor for the outputs having the same output phase being connected in parallel.

2. The multiple PWM cycloconverter of claim 1, each of the reactors connected in parallel further comprising a common core.

3. The multiple PWM cycloconverter of claim 1 comprising a current sensor for each one of the multiple outputs to detect an output current of each one of the multiple outputs to control switching of the bid-directional switches.