An analog MPPT controller without multiplier for PV applications based on simplified P&O method
- Resource Type
- Conference
- Authors
- Wang, Chenxi; Chen, Min; Zhang, Xinghua; Gao, Mingzhi
- Source
- 2017 IEEE Energy Conversion Congress and Exposition (ECCE) Energy Conversion Congress and Exposition (ECCE), 2017 IEEE. :2296-2300 Oct, 2017
- Subject
- Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Maximum power point trackers
Market research
Radiation effects
Logic circuits
Calculators
Integrated circuit modeling
PV applications
MPPT
Analog controller
Improved P&O Method
Multiplier
- Language
This paper proposed an analog controller without multiplier to realize the Maximum Power Point Tracking (MPPT) for PV applications based on an improved perturbation and observation (P&O) method. Comparing with traditional analog MPPT controller designs which need a multiplier to calculate the power value to implement P&O, the proposed method only perturbs and observes single variable to get the same effects, therefore the circuit is simplified and the cost is decreased. The controller uses classical and simple functions of electronic circuits. This design is applicable for most PV applications and is easily made into an IC. The whole circuit has been implemented and validated on both simulation and hardware platforms. The results show good tracking accuracy and high efficiency of MPPT (more than 99%) under variable solar irradiation.