dgpost.transform.circuit_utils.circuit_components

dgpost.transform.circuit_utils.circuit_components.create_parameter(name, bounds, unit)

Creates a dictionary with keys name, bounds and unit

Parameters:

• name (str) – name of the parameter

• bounds (tuple[float, float]) – default bounds of the parameter

• unit (str) – SI unit of the parameter

Returns:

dictionary containing the input values

Return type:

dict

class dgpost.transform.circuit_utils.circuit_components.Component

Bases: object

A component stores information needed for the fitting.

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

Return type:

str

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name (str) – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param (dict[str, float]) – dictionary of parameter values with the name as the key

• name (str) – the name of the component

• freq (array) – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.Resistor

Bases: Component

defines a resistor

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.Capacitor

Bases: Component

defines a capacitor

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.CPE

Bases: Component

defines a constant phase element

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.Warburg

Bases: Component

defines a semi-infinite Warburg element

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.WarburgOpen

Bases: Component

defines a finite-space Warburg element

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array

class dgpost.transform.circuit_utils.circuit_components.WarburgShort

Bases: Component

defines a finite-length Warburg element

static get_symbol()

Unique symbol used to identify the component in the circuit string

The symbol can only contain letters, i.e. a-z, A-Z

static get_parameters(name)

returns the parameter(s) that describe the component

A parameter is a dictionary with the keys: name, bounds and unit. The name of the parameter should be based on the symbol. It can also contain any character except a whitespace. The bounds are given as a tuple with the lower (lb) and upper bounds (ub) like (lb, ub). The unit needs to be recognised by pint

Parameters:

name – name of the component in the circuit string, made out of the symbol with an additional digit.

Returns:

The parameters that describes the component. A parameter is a dictionary with 3 keys: ‘name’, ‘bounds’ and ‘unit’

Return type:

list[dict]

static calc_impedance(param, name, freq)

Calculates the impedance of the component

Parameters:

• param – dictionary of parameter values with the name as the key

• name – the name of the component

• freq – the frequencies at which the impedance should be calculated

Returns:

numpy array with the complex impedance of the component for the given frequencies

Return type:

np.array