[Ghosh, 2(4): April, 2013] http: // www.ijesrt.com (C) Intern IJESRT INTERNATIONAL JOUR PI Control Based DC Driv Mousam Ghosh *1 , Suman G *1 Trainee Officer, West Bengal 2 Department of Electrical Engin 3,4 Department of Electrical Enginee The separately excited Direc controller is generally used in industry load changes are small. However, in ce parameters vary substantially and conv operates under a wide range of changin PI control for a separately exited dc dri a separately excited dc drive with sm controllers are verified by simulation in Keyword: Proportional Integral (PI) sp Introduction The principle of speed control is developed from the basic emf eq motors. Torque, flux, current, induced e are normalized to present the motor c Two types of control are available: arm and field control. In this paper the arma used to describe the said control lo armature voltage is controlled to contro the motor. In this paper a control lo developed in MATLAB and is applied The mathematical model of a separate motor is prepared. Basically this mathe is used in MATLAB to simulate the mo In this paper the responses like pe settling time, oscillation w.r.t. set val motor using the said logic is ana introduction of load torque variation. If the motor the load torque of the mo speed also varies, if load torque increa speed decreases and if load torque d motor speed increases. So to control desired set point level different cont introduced. But in point of view of diff parameters, these logics have some dem IS national Journal of Engineering Sciences & Research T RNAL OF ENGINEERING SCIENCES & RE TECHNOLOGY ve Speed Controller Responses for Small L Variation Ghosh 2 , Dr. Pradip Kumar Saha 3 , Dr. Goutam Ku Financial Corporation. B-Tech, ME,Jalapiguri, Wes neering, Bengal Institute of Technology & Managem 735102, West Bengal, India ering, Jalpaiguri Govt. Engineering College, Jalpaig Bengal, India ghosh_mousam@yahoo.co.in Abstract ct current (DC) motors with conventional Proportional y. This can be easily implemented and are found to be hi ertain applications, like rolling mill drives or machine too ventional PI or PID controller is not preferable due to th ng load characteristics. Here in this paper a speed respon ive. The responses of steady state error, speed overshoot mall changes in load torque using the said controller. Pe n MATLAB. peed controller, conventional PI or PID, steady state error, l for dc motors quation of the emf, and speed characteristics. mature control ature control is ogic. Basically ol the speed of logics (PI) is d to the motor. ely excited DC ematical model otor responses. eak overshoot, lue etc. of the alyzed due to f in runtime of otor varies the ases the motor decreases then the speed at a trol logics are ferent response merits in different situations i.e. for a parameter some logics are wel another response parameter these so good. The principle of speed c is developed from the basic em motors. Torque, flux, current, ind are normalized to present the m Two types of control are availab and field control. In this paper the used to describe the said cont armature voltage is controlled to the motor. In this paper a cont developed in MATLAB and is a The mathematical model of a se motor is prepared. Basically this is used in MATLAB to simulate t In this paper the responses lik settling time, oscillation w.r.t. s motor using the said logic is introduction of load torque variat the motor the load torque of th speed also varies, if load torque speed decreases and if load tor motor speed increases. So to co SSN: 2277-9655 echnology[895-898] ESEARCH Load Torque umar Panda 4 st Bengal, India ment, Jalpaiguri- guri-735102, West Integral (PI) speed ighly effective if the ols, where the system he fact that, the drive nse is analyzed using etc. are analyzed for erformances of these , speed overshoot. particular response ll equipped but for e logics may not be control for dc motors mf equation of the duced emf, and speed motor characteristics. ble: armature control e armature control is trol logic. Basically control the speed of trol logics (PI) is applied to the motor. eparately excited DC mathematical model the motor responses. ke peak overshoot, set value etc. of the s analyzed due to tion. If in runtime of he motor varies the increases the motor rque decreases then ontrol the speed at a