Soft Start and Voltage Control of Induction Motors Using Floating Capacitor H-Bridge Converters

Leng, Shuai; Haque, Ahteshamul; Perera, Nirmana; Knight, A.M.; Salmon, John

doi:10.1109/tia.2016.2539253

Cited by 21 publications

(13 citation statements)

References 32 publications

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“…The performance of the proposed floating capacitor H-bridge motor drive system under the influence of different DC capacitance values will be shown in this section. It should be noted that soft-start results are not provided in this paper mainly because soft-start control algorithm used in this paper is the same as the one used in reference [20]. Since reference [20] had already provided detailed waveforms showing transient state (from no load condition up to full load condition), the commonly-known results regarding soft start are not shown in this paper.…”

Section: Resultsmentioning

confidence: 99%

“…3, the reference signal for  * is derived from (3). A phase correction signal corr is used to take into account various signal phase delays, like SVPWM signal generation delays [20]- [21]. A PLL is used to track the grid voltage angle (θ), which is used to perform the inverse Park transformation.…”

Section: A Alpha Angle Controlmentioning

confidence: 99%

“…For Im to reach its maximum value, this happens during the soft start phase, where the upper limit for the motor current is controlled around 3-4 p.u. for the proposed system [20]. For the magnitude of Vb to reach its minimum value, such condition happens under full load condition [21].…”

Section: G Minimum DC Capacitancementioning

confidence: 99%

“…This is because for capacitive mode of operation, the ripple waveform has the same phase-angle as the absolute value of output voltage. Although for inductive mode, such phenomenon is not true, but this condition does not occur in floating capacitor H-bridge motor drive because the proposed system always operates with a leading power factor [20]- [21].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Slim DC Capacitance on Floating Capacitor H-bridge Motor Drive

Leng¹,

Muyeen

Al‐Durra³

et al. 2018

IEEE Trans. Power Electron.

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This paper discusses the impact of small DC capacitance in a motor drive using a floating capacitor H-bridge topology. Special attention is paid on investigating the 2 nd order DC capacitor voltage ripples, whose influence on the induction motor as well as on the motor drive itself is of importance. This issue is addressed in this paper through rigorous mathematical formulations. It is found that by inverting 2 nd order DC ripple voltage using conventional SVPWM, no harmful harmonics will be generated in the motor line voltage. This demonstrates the possibility of drastically reducing the DC capacitance of the proposed system. Induction motor as well as H-bridge performance with respect to different DC capacitance is demonstrated by experiments, which lays the foundation for cost reduction and reliability enhancement of the proposed system.

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Section: Resultsmentioning

confidence: 99%

Section: A Alpha Angle Controlmentioning

confidence: 99%

Section: G Minimum DC Capacitancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Slim DC Capacitance on Floating Capacitor H-bridge Motor Drive

Leng¹,

Muyeen

Al‐Durra³

et al. 2018

IEEE Trans. Power Electron.

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show abstract

“…In addition, VFD starting results in a relatively long acceleration time because the maximum drive currents and accordance torque are typically 150-200% of their full load values. If faster acceleration times are desired, the drive must be suitable for supplying higher current during the startup period [12]- [14].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Grid-Connected Voltage Source Inverter to Drive Induction Motor Operating With High-Inertia Load

Madanzadeh

Bukhari

2020

IEEE Access

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This paper proposes a novel multifunctional topology for a grid-connected voltage source inverter to control the speed and power flow of a squirrel-cage induction motor. For high-inertia loads during startup, the issues faced include a large transient current and high heat generation. However, the solutions proposed by existing startup methods are inadequate. The topology presented in this study not only addresses the problems related to these methods, i.e., creating a smooth startup, but also presents a flexible alternative for power factor correction using capacitor banks. First, the proposed technique accelerates the motor smoothly to its operating point through the sinusoidal voltage provided by an inverter with an LC filter in its output. In the second step of the control method, after achieving stability in the desired operating point, a converter with an LC filter is assigned the task of power factor correction. Thus, the proposed topology achieves a smooth startup and unity power factor. It includes a new control strategy in which the rotor fieldoriented control method is employed for the speed control mode. Finally, the validity of the proposed theory is verified.INDEX TERMS field-oriented control, grid-connected inverter, induction motors, power factor correction, startup process. NOMENCLATURE Grid: uGrid voltage in the bus bar. v g , i gGrid voltage and current in coupling point. R g , L gGrid resistance and inductance. ω g , f gGrid frequency in rad/s and Hz. θ g Voltage phase measured in rad. Power converter with filter: v, i Filter output voltage and current. v i , i i Inverter output voltage and current. i c , i r Capacitance and damping resistance currents. R f , L f , C f Filter resistance, inductance, and capacitance. f r Resonance frequency. f s Switching frequency. V dc DC link voltage.

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A Comparative Study on the Performance of the Induction Motor with Fuzzy-Based Power Converters

V. J.,

Sivachidambaranathan

2023

Electric Power Components and Systems

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Soft Start and Voltage Control of Induction Motors Using Floating Capacitor H-Bridge Converters

Cited by 21 publications

References 32 publications

Impact of Slim DC Capacitance on Floating Capacitor H-bridge Motor Drive

Impact of Slim DC Capacitance on Floating Capacitor H-bridge Motor Drive

Multifunctional Grid-Connected Voltage Source Inverter to Drive Induction Motor Operating With High-Inertia Load

A Comparative Study on the Performance of the Induction Motor with Fuzzy-Based Power Converters

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