Browse Prior Art Database

Method for mitigating current sharing problems in parallel drives utilizing multiple gate resistors

IP.com Disclosure Number: IPCOM000244651D
Publication Date: 2016-Jan-05
Document File: 4 page(s) / 453K

Publishing Venue

The IP.com Prior Art Database

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 01 of 4


Page 02 of 4


Page 03 of 4

START

  Resistor selection logic

SEL

00fast00

Reference turn-on time ton,ref

00slow00

Turn-on time adjustment calculation
t = ton,ref ton,fast

Turn-on time adjustment calculation
t = ton,ref ton,slow

Identified turn-on time ton,fast

Adjust turn-on instant according to t

Identified turn-on time ton,slow

END


Page 04 of 4

clc, clear all, close all

% Unit 1 turn-on times.
t_on_slow_1 = 5;
t_on_fast_1 = 3;

% Unit 2 turn-on times.
t_on_slow_2 = 6;
t_on_fast_2 = 5;

% Just a vector holding the identified turn-on times of both units.
t_identified = [t_on_slow_1 t_on_fast_1 t_on_slow_2 t_on_fast_2];

% The reference turn-on time can be any value but when calculated in this
% way, the required adjustment range is automatically minimized.
t_on_ref = 1/numel(t_identified) * sum(t_identified);

% Just a vector holding the required adjustments.
delta_t = t_on_ref - t_identified;

% Matrix, the rows of which are as follows:
% 1) identified turn-on times
% 2) required adjustments
% 3) turn-on times after the adjustment
t_matrix = [t_identified; delta_t; t_identified+delta_t]

t_matrix =

5.0000 3.0000 6.0000 5.0000

-0.2500 1.7500 -1.2500 -0.2500

4.7500 4.7500 4.7500 4.7500

Published with MATLAB® R2013b

1