Grid Current Shaping Method with DC-Link Shunt Compensator for Three-Phase Diode Rectifier-Fed Motor Drive System

Shin, Hojoon; Son, Yeongrack; Park, Yong Ha

doi:10.1109/tpel.2016.2540651

Cited by 31 publications

(11 citation statements)

References 26 publications

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“…However, it is difficult to compensate for the instantaneous difference power owing to the decrease in the capacitance of the DC-link capacitor. In this section, the design method for the three-level inverter with the small DC-link capacitors is presented to shaping the To improve the quality of the input current caused by small capacitors, many researchers have studied various control techniques, including the use of the pulse-power injection method, output-current compensation technique, and harmonic injection technique [3,4,[6][7][8][9][10][11][12][13][14][15]. In the case of [8], the output-current compensation method distorted the output current in order to improve the input current.…”

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

“…However, it is difficult to compensate for the instantaneous difference power owing to the decrease in the capacitance of the DC-link capacitor. In this section, the design method for the three-level inverter with the small DC-link capacitors is presented to shaping the rectified grid current [10]. The rectified input current, I diode can be expressed as the sum of the inverter current that is consumed by the load and the charging current for the DC-link capacitor voltage, as shown in Figure 1.…”

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

“…Energies 2018, 11, x 3 of 17 rectified grid current [10]. The rectified input current, Idiode can be expressed as the sum of the inverter current that is consumed by the load and the charging current for the DC-link capacitor voltage, as shown in Figure 1.…”

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

“…By increasing the value of α, the shape of I diode contains the six-order harmonic that become similar with I diode when the large DC-link capacitors are applied [10,25]. Therefore, the input grid currents also acquire the shape of sinusoidal waveforms by adjusting α.…”

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

“…Therefore, film capacitors are unable to compensate for the input-output power difference. Small-capacity inverter systems are beneficial in applications such as fans, pumps, and compressors, where the load variation is not significant [10][11][12]. To improve the quality of the input current caused by small capacitors, many researchers have studied various control techniques, including the use of the pulse-power injection method, outputcurrent compensation technique, and harmonic injection technique [3,4,[6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

In¹,

Kim

Lee

2018

Energies

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This paper presents a method to improve the quality of input-output currents in a three-level neutral-point clamped (NPC) inverter with small direct current-link (DC-link) capacitor systems. The inverter systems with the small DC-link capacitors have several advantages in terms of cost, volume, life-time, and reliability when compared to inverters that use large DC-link capacitors. However, there are problems with respect to the deterioration of the input current quality and a severe ripple of neutral-point voltage (NPV), which can cause an aggravated output current. To mitigate these issues, an additional circuit is applied for the input current shaping and a compensation algorithm is applied to reduce the ripple voltage of NPV. The effectiveness of the proposed design and control method is verified with various simulation and experimental results.

show abstract

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

“…However, it is difficult to compensate for the instantaneous difference power owing to the decrease in the capacitance of the DC-link capacitor. In this section, the design method for the three-level inverter with the small DC-link capacitors is presented to shaping the rectified grid current [10]. The rectified input current, I diode can be expressed as the sum of the inverter current that is consumed by the load and the charging current for the DC-link capacitor voltage, as shown in Figure 1.…”

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

Section: Description Of Grid Current Improvement Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

In¹,

Kim

Lee

2018

Energies

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Active damping control based bus voltage resonance suppression in electrolytic capacitorless PMSM application

Cheng,

Yao,

Han

et al. 2024

J. Phys.: Conf. Ser.

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The structure of electrolytic capacitorless in automotive electronic applications has the advantages of lower cost and better reliability. However, motor drive systems using this structure may experience unstable bus voltage. To this end, this paper proposes an active damping control strategy based on virtual impedance. By modelling the electric drive system and conducting stability analysis, the cause of bus voltage resonance due to the use of small capacitors is revealed. Based on the extracted DC bus voltage harmonic signal, additional voltage vectors are added in the d-axis and q-axis voltage vectors, eliminating the impedance mismatch problem in the drive system caused by the reduction of bus capacitance, effectively suppressing the voltage oscillation on the machine side of the drive system. Simulation data shows that under the condition of using small-capacity ceramic capacitors, the method proposed in this paper achieves a harmonic suppression capability similar to that of large-capacity electrolytic capacitors, effectively ensuring the application safety of automotive drivers with electrolytic capacitorless architecture.

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A Torque Control Method Based on I-MR Controller for IPMSM Drive With Small DC-Link Capacitor

Yin

Wang

et al. 2021

IEEE Access

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In traditional motor drive system, large volume electrolytic capacitors are utilized to buffer energy and stabilize the dc-link voltage. However, these capacitors affect the reliability of the drives and narrow the conduction angle of diode-rectifier. As a result, the grid side current is distorted and the power factor is deteriorated. In order to settle these issues, small dc-link capacitors can replace the electrolytic capacitors. In this paper, a motor torque control method with dc-link voltage feed-forward compensation for an interior permanent magnet synchronous motor (IPMSM) drive system is proposed. Hence, an integration multi-resonant (I-MR) controller is established to regulate the motor torque to obtain high input power factor and low grid current harmonics. In addition, a voltage feed-forward compensation is used to diminish the error of motor torque control. The effectiveness of the proposed method is verified through simulation and experiments. Results indicate that the input power factor can reach about 99.4% and the grid current harmonics are considerably lower than the requirement of EN-61000-3-2 standard.INDEX TERMS IPMSM, small dc-link capacitor, high power factor, Torque control, integration multiresonant controller, voltage feed-forward compensation.

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Grid Current Shaping Method with DC-Link Shunt Compensator for Three-Phase Diode Rectifier-Fed Motor Drive System

Cited by 31 publications

References 26 publications

Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

Design and Control of Small DC-Link Capacitor-Based Three-Level Inverter with Neutral-Point Voltage Balancing

Active damping control based bus voltage resonance suppression in electrolytic capacitorless PMSM application

A Torque Control Method Based on I-MR Controller for IPMSM Drive With Small DC-Link Capacitor

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