US 2020/0272015 A1 · ENHANCED CONTROL OF AN IGU WITH GRADED TINTING

Abstract

A method for controlling multiple electrochromic devices (ECDs) that have a variable tint profile. The method can include applying an initial test voltage profile to four or more bus bars of a first ECD, producing a first test tint profile in the first ECD in response to the initial test voltage profile, adjusting the initial test voltage profile to produce a first desired tint profile (DTP) in the first ECD, determining first modeling parameters based on the adjustments of the initial test voltage profile, modeling the first ECD based on the first modeling parameters, determining first compensation parameters via the first ECD model determining a first compensated voltage profile (CVP) by modifying the initial test voltage profile based on the first compensation parameters, and producing the first DTP in the first ECD in response to applying the first CVP to the first ECD.

Claims20

Dependent claims

A method for controlling multiple insulated glass units (IGUs), with each IGU having an electrochromic device (ECD) with a variable tint profile, the method comprising:

applying a test voltage profile to four or more bus bars of a first ECD in a first IGU;
producing a first test tint profile in the first ECD in response to the test voltage profile, with the test voltage profile initially being equal to a first set voltage profile (SVP);
adjusting the test voltage profile to produce a first desired tint profile (DTP) in the first ECD;
determining first modeling parameters based on differences between the first SVP and the adjusted test voltage profile for the first ECD;
modeling the first ECD, via a first ECD model, based on the first modeling parameters;
determining first compensation parameters via the first ECD model;
inputting the first SVP to the first ECD model;
determining a first compensated voltage profile (CVP) by modifying the first SVP based on the first compensation parameters;
and
applying the first CVP to the bus bars of the first ECD;
and
producing the first DTP in the first ECD of the first IGU in response to applying the first CVP to the first ECD.

9 more elements

A method for controlling multiple electrochromic devices (ECDs) with each having a variable tint profile, the method comprising:

applying an initial test voltage profile to four or more bus bars of a first ECD;
producing a first test tint profile in the first ECD in response to the initial test voltage profile;
adjusting the initial test voltage profile to produce a first desired tint profile (DTP) in the first ECD;
determining first modeling parameters based on the adjustments of the initial test voltage profile;
modeling the first ECD, via a first ECD model, based on the first modeling parameters;
determining first compensation parameters via the first ECD model;
determining a first compensated voltage profile (CVP) by modifying the initial test voltage profile based on the first compensation parameters;
and
producing the first DTP in the first ECD in response to applying the first CVP to the first ECD.

6 more elements

A method for controlling multiple electrochromic devices (ECDs) with each having a variable tint profile, the method comprising:

applying an initial test voltage profile to four or more bus bars of a first ECD;
producing a first test tint profile in the first ECD in response to the initial test voltage profile;
adjusting the initial test voltage profile to produce a first desired tint profile (DTP) in the first ECD;
determining first modeling parameters based on the adjustments of the initial test voltage profile wherein the first modeling parameters comprise:
a configuration of the bus bars in the first ECD,
an impedance of each of the bus bars,
a sheet resistance of each conductive layer of the first ECD,
a size of the first ECD,
a temperature of the first ECD,
a desired tint level of the first ECD,
voltage differences between the bus bars,
estimated current supplied to the bus bars, or
combinations thereof;
modeling the first ECD, via a first ECD model, based on the first modeling parameters;
determining first compensation parameters via the first ECD model;
determining a first compensated voltage profile (CVP) by modifying the initial test voltage profile based on the first compensation parameters;
and
producing the first DTP in the first ECD in response to applying the first CVP to the first ECD.

15 more elements

Dependencies are inferred from the claim text.

Enhanced control of an igu with graded tinting

Life of this patent

Enhanced control of an igu with graded tinting

Life of this patent

Abstract

Claims20