Single-bit modulator for wireless power transfer system

Abstract

<p>This paper proposes a single-bit ADC system based Proportional and Integral (PI) controller to maintain a desired level of power transfer efficiency in Capacitive Power Transfer (CPT) systems. In this paper, a simple single-bit ADC system i.e., Single-Bit Modulator (SBM) is considered as an alternative to the commonly used multi-bit ADC systems. Unique features of employing SBM are 1) its ability to convert analog signals into single-bit signals and 2) its easy integrability in digital chips with linear variable differential transformers (LVDTs) such as FPGAs. A SBM based PI (SBM-PI) controller is designed to judicially interface with the single-bit output of SBM. The proposed (SBM-PI) controller guarantees less hardware resources, latency and regulates the output voltage to provide the desired power transfer efficiency. The behavior of SBM-PI controller is compared to that of a conventional multi-bit controller, with the results of both controllers being identical. The effectiveness of the proposed controller with SBM is further demonstrated using the experimental prototype of CPT by implementing a SBM-PI controller using $16$ MHz ATmega8 microcontroller. The experimental results from a laboratory prototype illustrate that SBM-PI controller successfully regulates the output voltage of CPT to control the power flow.</p>

Optimal event‐triggered control for wireless power transfer system in electric vehicles

“…Moreover, implementing smart grid technologies, such as demand response and load shedding, can further enhance the stability of transfer charging for EVs, enabling the efficient and widespread adoption of electric mobility without compromising the integrity of the power supply infrastructure. Moreover, the control design of WPT is usually implemented over a communication channel between the sensors and the controller, which requires taking into account the sampling‐induced errors due to the network 11 . Hence, the research question of interest here is how to stabilize the WPT system while reducing the amount of communication between sensors, controllers, and actuators.…”

“…Moreover, the control design of WPT is usually implemented over a communication channel between the sensors and the controller, which requires taking into account the sampling-induced errors due to the network. 11 Hence, the research question of interest here is how to stabilize the WPT system while reducing the amount of communication between sensors, controllers, and actuators.…”