Grid-Side AC Line Filter Design of a Current Source Rectifier With Analytical Estimation of Input Current Ripple

Basu, Kaushik; Sahoo, Ashish Kumar; Chandrasekaran, Visweshwar; Mohan, Ned

doi:10.1109/tpel.2014.2305435

Cited by 25 publications

(10 citation statements)

References 34 publications

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“…Once the ripple current rms is determined, it is assumed that the entire ripple is concentrated at the switching frequency. This results in a slight overdesign [34]. Considering an allowable voltage ripple to be a fraction of the dc voltage , the filter admittance is given by…”

Section: Effect Of Device Capacitances On Soft-switchingmentioning

confidence: 99%

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

Das

Weise

Basu

et al. 2019

IEEE Trans. Transp. Electrific.

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163

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In vehicle-to-grid applications, the battery charger of the electric vehicle (EV) needs to have a bidirectional power flow capability. Galvanic isolation is necessary for safety. An ac-dc bidirectional power converter with high-frequency isolation results in high power density, a key requirement for an on-board charger of an EV. Dual-active-bridge (DAB) converters are preferred in medium power and high voltage isolated dc-dc converters due to high power density and better efficiency. This paper presents a DAB-based three-phase ac-dc isolated converter with a novel modulation strategy that results in: 1) single-stage power conversion with no electrolytic capacitor, improving the reliability and power density; 2) open-loop power factor correction; 3) soft-switching of all semiconductor devices; and 4) a simple linear relationship between the control variable and the transferred active power. This paper presents a detailed analysis of the proposed operation, along with simulation results and experimental verification.

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Section: Effect Of Device Capacitances On Soft-switchingmentioning

confidence: 99%

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

Das

Weise

Basu

et al. 2019

IEEE Trans. Transp. Electrific.

Self Cite

163

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“…The size of the input capacitors is predominately dependent on the transient overshoot of the system. If following the design recommendations in [18], [23], which choose the capacitor values based on limiting of the RMS harmonic current injected into the grid, the capacitors should be of sufficient size to handle these transients.…”

Section: Component Considerationsmentioning

confidence: 99%

A Matrix Converter Ride-Through Configuration Using Input Filter Capacitors as an Energy Exchange Mechanism

Orser

Mohan

2015

IEEE Trans. Power Electron.

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A novel ride-through approach for matrix converters in adjustable speed drives is presented. The input capacitors are utilized to transfer energy from the spinning inertia of the motor to support the motor flux during grid fault events. The addition of three bidirection switches is required to isolate the input filter capacitors from the collapsed grid voltages. The addition of input switches, a ride-through vector control strategy, and post fault reconnection logic are shown to enable ride-through of many cycle faults without the use of an additional energy storage device. In this paper, the control and reconnect strategies are discussed followed by simulations of the system and the presentation of experimental results. Through a short review of power quality assessments, it is shown that these improvements allow matrix converter-based adjustable speed drives to operate in a majority of real world fault situations.

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“…The increased total transformer secondary voltage can be computed using (10). With the value ofV 1 s known, as explained in the previous section the rms voltages of individual transformer secondary windings can be determined.…”

Section: Effect Of Transformer Leakage Inductancementioning

confidence: 99%

“…2. Simple carrier based modulation approach is used for modulating the CSI [10]. The control scheme is employed by changing the modulation index supplied to the PWM CSI.…”

Section: E Control Of Csimentioning

confidence: 99%

Asymmetrical converters with medium frequency transformer isolation to interface low voltage DC to a medium voltage three phase grid

Iyer

Mohan

2014

2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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This paper presents an asymmetrical converter topology with medium frequency transformer (MFT) isolation to interface a low voltage DC source with a 3-phase medium voltage grid. The topology consists of asymmetrical converters connected in parallel across the DC input, followed by a MFT for isolation and a diode bridge fed current source inverter (CSI) connected to the MFT secondary. The asymmetrical converters connected in parallel share the high input currents and are modulated so as to generate a multi-level stepped waveform across the transformer secondary. The asymmetry is introduced in the MFT turns ratio. The power flow in DC sources like PV being unidirectional, the transformer secondary side is connected to diode bridge and pulse-width modulated (PWM) CSI which interfaces a medium voltage grid. The stepped voltage across the transformer secondary and the use of diode bridge results in a trapezoidal current through the transformer windings eliminating the problem of leakage commutation. The paper also determines analytically the transformer voltages based on the DC link current requirement of the CSI based on the grid active power. The proposed topology is simulated using MATLAB/Simulink.

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Grid-Side AC Line Filter Design of a Current Source Rectifier With Analytical Estimation of Input Current Ripple

Cited by 25 publications

References 34 publications

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

A Bidirectional Soft-Switched DAB-Based Single-Stage Three-Phase AC–DC Converter for V2G Application

A Matrix Converter Ride-Through Configuration Using Input Filter Capacitors as an Energy Exchange Mechanism

Asymmetrical converters with medium frequency transformer isolation to interface low voltage DC to a medium voltage three phase grid

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