Title :
Power sensor-less MPPT control scheme utilizing power balance at DC link-system design to ensure stability and response
Author :
Kitano, Tatsuya ; Matsui, Mikihiko ; Xu, De-hong
Author_Institution :
Tokyo Inst. of Polytech., Kanagawa, Japan
Abstract :
The authors previously proposed a new MPPT (maximum power point tracking) control scheme for PV (photovoltaic) power systems connected in parallel with the AC system line. It is characterised by utilizing power balance at the DC link under steady state conditions, hence eliminating the array output power detection and achieving power sensorless operation. However, the system response and stability greatly depend on its main circuit and control system parameters. This paper shows a system design to ensure stability and response based on system transfer functions. Response of the experimental system has been proved fast enough for practical use. Full-daytime testing data show the successful tracking results of the system
Keywords :
control system synthesis; optimal control; photovoltaic power systems; power control; power system control; stability; transient response; voltage control; DC link power balance; PV power systems; control performance; control system parameters; optimal control design; power sensorless MPPT control scheme; system response; system stability; transfer functions; Circuit stability; Control systems; Photovoltaic systems; Power system control; Power system stability; Power systems; Sensor arrays; Sensorless control; Solar power generation; Steady-state;
Conference_Titel :
Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-7108-9
DOI :
10.1109/IECON.2001.975971
