Additional indicators for short time overvoltages and voltage impulses

Maier, Virgil; Pavel, Sorin G.; Beleiu, Horia G.; Farcas, Vasile

doi:10.1109/icepe.2016.7781452

Cited by 5 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As one FPGA can handle several internal loops operating at different clock rates, it is straight forward to implement fault detection loops that run faster than the inverter controller one [2]. Nevertheless, if grid tied inverters are required to be fault tolerant, power quality and grid fault indicators have to be included in the fault detection and compensation algorithm [18], [19].…”

Section: Introductionmentioning

confidence: 99%

“…By the time the FOC requires new input data it will receive instead of the wrongly measured currents, those calculated to perform continuous operation. Using a fixed threshold instead of a current percent based calculated one [19], [20] proved to be a much more reliable and robust solution. The FPGA and PWM chosen frequencies are up to the designer's will, those used in this paper are pure examples.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simple and Robust Current Sensor Fault Detection and Compensation Method for 3-Phase Inverters

et al. 2020

View full text Add to dashboard Cite

The present paper proposes a genuine, simple to implement, robust and reliable method for current sensors fault detection and compensation used for 3-phase inverters. Its functionality is based on an algorithm programed into a Field Programmable Gate Array (FPGA) as general controller. Usually, 3-phase inverters are controlled using field oriented control (FOC) which is generally triggered to sample the measured currents on the established switching frequency. As the latter is much smaller than the base clock of the FPGA, this allows hundreds of free time samples to perform other calculations in-between two FOC samplings. In this paper, a method that uses these free and unused time samples is presented. This method performs calculations for fault detection and compensation ensuring that at each new FOC sampling, this will receive the correct current data to reach continuous operation despite faults. The interleaving principle of the FOC with the fault detection method, as it will be proven in the paper, ensures high reliability of the complete controller diminishing the possibility of undesired or faulted readings to disturb the FOC's calculations. The fault detection philosophy is based on continuous comparison of the instantaneous measured currents (sensor's response) against reference values. The experimental results presented in the paper prove reliable operational performances of the method in both steady state and transient conditions. The added value of the paper consists in its genuine approach to handle the fault detection and compensation in-between two PWM ticks, ensuring that no faulted measurements can reach the control unit. This added value is based on functionality divided on several functions triggered by an internal generated clock synchronizing and handshaking their operations towards one goal: fault detection and compensation. INDEX TERMS Electrical fault detection, fault tolerant control, fault diagnosis.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simple and Robust Current Sensor Fault Detection and Compensation Method for 3-Phase Inverters

et al. 2020

View full text Add to dashboard Cite

show abstract

“…If the renewable energy is used for charging electrical vehicles (EVs), then we can consider these vehicles with zero emissions [17]. In this context, as the number of electrical vehicles (EVs) will increase, it will also be necessary to increase the number of the charging stations which will have a negative impact on the power quality of the power network (Overvoltage, Voltage Sag) [18][19][20][21][22]. But, with the increase in the number of charging stations installed, the problem will be to carry out their maintenance.…”

Section: Introductionmentioning

confidence: 99%

“…The duty cycle of the PWM signal is closely related to the consumption of predefined current, which should not be exceeded. By modelling the PWM signal, the maximum current consumed by the EV can become restricted [17][18][19]. Knowing the number of phases used, the maximum permissible power can be calculated.…”

Section: Introductionmentioning

confidence: 99%

The ElectricalVehicle Simulator for Charging Station in Mode 3 of IEC 61851-1 Standard

et al. 2019

View full text Add to dashboard Cite

As fuel consumption in the transport sector has increased at a faster pace than in other sectors, the use of electromobility represents the main strategy adopted by the automotive industry. In this context, as the number of electrical vehicles (EVs) will increase, it will also be necessary to increase the number of charging stations. The present paper presents a complete solution for charging stations that can be located in the office or mall parking area. This solution includes a mode 3 AC charging stations of International Electrotechnical Commission (IEC) 61851-1 Standard, an EV simulator for testing the good functionality of the charging stations (i.e., communications, residual-current device (RCD) protection) and a software application used for controlling the charging process by the programmable logic controller (PLC).

show abstract