modelPartialControllerInterface

Partial interface model for waterside economizer temperature controller

Information

This module implements a PID controller interface.

Type	Name	Default	Description
Boolean	use_controller	true	Set to ture if the built-in controller is enabled to maintain the outlet temperature on the load side of a heat exchanger
Controller
Modelica.Blocks.Types.SimpleController	controllerType	Modelica.Blocks.Types.SimpleController.PID	Type of controller
Real	k	1	Gain of controller
Modelica.Units.SI.Time	Ti	0.5	Time constant of integrator block
Modelica.Units.SI.Time	Td	0.1	Time constant of derivative block
Real	yMax	1	Upper limit of output
Real	yMin	0	Lower limit of output
Real	wp	1	Set-point weight for Proportional block (0..1)
Real	wd	0	Set-point weight for Derivative block (0..1)
Real	Ni	0.9	Ni*Ti is time constant of anti-windup compensation
Real	Nd	10	The higher Nd, the more ideal the derivative block
Boolean	reverseActing	false	Set to true for throttling the water flow rate through a cooling coil controller
Controller › Initialization
Modelica.Blocks.Types.Init	initType	Modelica.Blocks.Types.Init.InitialState	Type of initialization (1: no init, 2: steady state, 3: initial state, 4: initial output)
Real	xi_start	0	Initial or guess value value for integrator output (= integrator state)
Real	xd_start	0	Initial or guess value for state of derivative block
Real	yCon_start	0	Initial value of output from the controller
Controller › Integrator reset
Buildings.Types.Reset	reset	Buildings.Types.Reset.Disabled	Type of controller output reset
Real	y_reset	xi_start	Value to which the controller output is reset if the boolean trigger has a rising edge, used if reset == Buildings.Types.Reset.Parameter

Type	Name	Default	Description
Modelica.Blocks.Interfaces.BooleanInput	trigger		Resets the controller output when trigger becomes true
Modelica.Blocks.Interfaces.RealInput	y_reset_in		Input signal for state to which integrator is reset, enabled if reset = Buildings.Types.Reset.Input