Control of Three-Phase PWM Rectifiers Using A Single DC Current Sensor

Bing, Zhonghui; Du, Xiong; Sun, Jian

doi:10.1109/tpel.2010.2070809

Cited by 28 publications

(13 citation statements)

References 12 publications

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“…In addition, Figure 4 shows the switching vector in the spatial coordinates of the hexagon. Figure 4 and Table 1 show that the current cannot be measured through the neutral-point shunt resistor during the zero vector (V 0 ) and space vectors represented by Previous research has established the effective voltage time by shifting the pulse width modulation (PWM) or injecting the voltage to restore the current [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. However, these methods cause a high total harmonic distortion (THD) by injecting relatively large voltages.…”

Section: Acquiring Phase Current From Neutral Shunt Resistormentioning

confidence: 99%

“…At this time, the measurement line or measurement point is at the boarder of Area 1 or Area 2. Each part of Area 3 has a different type of optimal voltage injection, as shown in Equations (10) and (13)- (23), and in Figure 21.…”

Section: Part 1 D-axismentioning

confidence: 99%

“…However, although the active vectors are combined with "O" or "N" switching states, the phase current cannot be measured due to the short dwell time of the active vectors. The portion in the space vector diagram where the dwell time of the active vectors is not large enough to measure the current is called the current-unmeasurable area (CUA) [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. A shunt resistor at the neutral point of the three-level NPCI can be used to measure the phase current, as shown in Figure 2c.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Novel Phase Current Reconstruction Method for a Three-Level Neutral Point Clamped Inverter (NPCI) with a Neutral Shunt Resistor

Son

Kim

2018

Energies

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This paper presents three phase current reconstruction methods for a three-level neutral point clamped inverter (NPCI) by measuring the voltage of a shunt resistor placed in the neutral point of the inverter. In order to accurately acquire the phase currents from the shunt resister, the dwell time of the active voltage vectors need to exceed the minimum time. On the other hand, if the time of active voltage is shorter than the minimum time, the current measurement becomes impossible. In this paper, unmeasurable regions for current are classified into three areas. Area 1 is a region in which both phase currents can be measure. Therefore, it is not necessary to restore the current. In Area 2, only one phase current can be measured. Thus, an estimation or restoration method is needed to measure another phase current. In this paper, the current estimation method using an electrical model of the motor is proposed. Area 3 is the region in which both phase currents can not be measured. In this case, it is necessary to move the voltage vector to the current measurable area by injecting the voltage. In this paper, Area 3 is divided into 36 sectors to inject optimal voltage. The proposed methods have the advantages of high current measurement accuracy and low THD (total harmonic distortion). The effectiveness of the proposed methods are verified through experimental results.

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Section: Acquiring Phase Current From Neutral Shunt Resistormentioning

confidence: 99%

Section: Part 1 D-axismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Novel Phase Current Reconstruction Method for a Three-Level Neutral Point Clamped Inverter (NPCI) with a Neutral Shunt Resistor

Son

Kim

2018

Energies

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“…In this HCC model, legible losses are produced in AC input source inductance in rectifier-based circuit. In a three phase high power factor HCC PWM converter (Leggate, 1997;Bing et al, 2011). The controller is used here is HCC through which a switching signal is generated.…”

Section: Introductionmentioning

confidence: 99%

Three phase PWM converter using PI and fuzzy with hysteresis current controller

Dwivedi

Tiwari

2019

IJPELEC

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The research work presents hysteresis current controlled three-phase PWM converter. The switching control is applied on three-phase bi-directional switches, to attain sinusoidal input current at unity power factor and constant output voltage. The dc-link voltage is controlled by outer loop fuzzy controller and PI controller. The converter can be used for regeneration or bi-directional power flow. The converter is especially suitable for mid to low power application (i.e., 5-15 kW).The bi-directional switches operate at low frequency, crossover zero voltage (at turn-on) and conduct for 1/12 th of line voltage cycle. The THD analysis of the controlled input phase current shows significant reduction in the THD as compared to the uncontrolled input phase current. The dc-link voltage follows the reference value.

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“…Sometimes, less current sensors are expected to reduce the total cost of the system. So the current reconstruction technique using single current sensor was proposed [1][2][3][4][5][6][7][8][9][10]. It is not only attractive for low-cost systems, but also useful for fault-tolerant operation of current sensors [11].…”

Section: Introductionmentioning

confidence: 99%

Phase current sensor fault-tolerant technique using information of DC side current in two-level inverter

Sheng

Guo

et al. 2013

2013 International Conference on Electrical Machines and Systems (ICEMS)

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The information of three-phase currents are very important for motor control. Some three-phase current reconstruction techniques were used in conventional two-level inverters using single DC current sensor for the purpose of cost reduction and sensor fault-tolerance. However, the validity would be affected because of planar bus bar and capacitor. A DC-link current sensor measures the sum of capacitor current and phase current. In this paper, a mathematical model is built and the parameters are recognized when the system is running. If the phase current sensor failure occurs, the state observer will be used to calculate the phase current.

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Control of Three-Phase PWM Rectifiers Using A Single DC Current Sensor

Cited by 28 publications

References 12 publications

A Novel Phase Current Reconstruction Method for a Three-Level Neutral Point Clamped Inverter (NPCI) with a Neutral Shunt Resistor

A Novel Phase Current Reconstruction Method for a Three-Level Neutral Point Clamped Inverter (NPCI) with a Neutral Shunt Resistor

Three phase PWM converter using PI and fuzzy with hysteresis current controller

Phase current sensor fault-tolerant technique using information of DC side current in two-level inverter

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