Implicit adaptive controller for wireless power pickups

Abstract

An implicit generalized minimum variance type adaptive controller has been designed for regulating the output voltage of a wireless power pick-up. The parameters of this controller are directly estimated without explicitly identifying system parameters and therefore it offers significant advantages over explicit type adaptive controllers requiring process parameter estimation. The performance of this controller has been illustrated via simulations. Results of simulation under various conditions demonstrate that the proposed controller can achieve full-range tuning control and successfully regulate the output voltage under system parameter variations.

Independent primary-side controller applied to wireless chargers for electric vehicles

“…The proposals in [5] [6] [7] are based on controllers completely installed in the secondary side. [5] [6] act on a DC-DC converter placed previously to the battery.…”

“…In this way, it aims at delivering a constant voltage to the load. With the same goal, [7] works by altering the secondary compensation structure. [8] also focuses on the load voltage but it adds a controller in the primary inverter to adjust the operational frequency.…”

Effect of wireless power link load resistance on the efficiency of the energy transfer

“…Power management, system controller synthesis, and circuit topologies are explored in the literature [9]- [13]. Selftuning power regulator [14], implicit adaptive controller [15], directional tuning control [16], and more flexible solution, active tuning of parallel compensated receiver with tri-state boost converter topology [17] are submitted for wireless power transfer applications. Using a buck converter in the receiver side, GaN based transmitter with adaptive receiver is designed in [18].…”

Robust H_∞ output feedback control of bidirectional inductive power transfer systems

“…In the past, most IPT systems have utilised various types of controllers including directional tuning, fuzzy, bit-stream and simple PI and PID controllers as a means of verifying a model or particular control strategy [7,6,9,10,8,12,13,31,32]. These controllers give sub-optimal performance if not correctly tuned and are vulnerable to system disturbances and parametric variations which are prevalent in such systems.…”