Parameter-measurement and control of the synchronous reluctance machine including cross saturation

Kilthau, A.; Pacas, J.M.

doi:10.1109/ias.2001.955945

Cited by 48 publications

(15 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…L d and L q are the inductances that were measured in d and q reference frame and they take into account the magnetic saturation and the cross-coupling phenomenon between both axes. D Q I I denotes that both inductances are functions of stator currents i d and i q [8].…”

Section: Mathematical Model Of the Synrm In Statormentioning

confidence: 99%

Digital implementation of a direct mean torque control for AC servo drives based on a hybrid DSP/FPGA controller system

Morales-Caporal

Pacas

2008

2008 11th IEEE International Power Electronics Congress

View full text Add to dashboard Cite

This paper presents the digital implementation of a Direct Mean Torque Control (DMTC) for AC servo drives. DMTC combines the excellent dynamic performance of the Direct Torque Control (DTC) with the advantages of inherently constant switching frequency and time equidistant control algorithms for suitable digital implementation. The basic idea is to predict the inevitable torque ripple in steady state and match it at the end of the cycle, so that, the mean torque is directly controlled. The criteria on how to preselect the appropriate voltage space phasor depend on the state of the machine and on the deviations of stator flux and electromagnetic torque at the end of the cycle.Experimental results using a hybrid digital system with a digital signal processor (DSP) and a fieldprogrammable-gate-array (FPGA) and an AC servo machine verify the effectiveness of the proposed control scheme.

show abstract

Section: Mathematical Model Of the Synrm In Statormentioning

confidence: 99%

Digital implementation of a direct mean torque control for AC servo drives based on a hybrid DSP/FPGA controller system

Morales-Caporal

Pacas

2008

2008 11th IEEE International Power Electronics Congress

View full text Add to dashboard Cite

show abstract

“…Generally, sensorless control algorithms based on a motor model [1][2][3][4][5][6] require preliminary knowledge of motor parameters such as the inductance and stator resistance for position estimation. However, as a motor is operated, its stator resistance varies with such factors as the winding temperature, and the inductance, too, fluctuates with the current.…”

Section: Introductionmentioning

confidence: 99%

“…Induction fluctuation is handled by preliminary inductance measurements in various current patterns, followed by organization of the data into a table [1,6] or a model [2,3]. However, on-line parameter identification of this sort inevitably involves large amounts of data, especially when cross-coupling is taken into account [3,5]. Therefore, sensorless control, which does not require preliminary parameter measurements, would be preferable.…”

Section: Introductionmentioning

confidence: 99%

Sensorless control of synchronous reluctance motors using on-line parameter identification method not affected by position estimation accuracy

et al. 2006

View full text Add to dashboard Cite

SUMMARYThis paper presents a novel on-line parameter identification method for sensorless control of Synchronous Reluctance Motors (SynRMs). Although conventional sensorless control methods based on mathematical models usually need some complex measurements of motor parameters in advance, the proposed identification method does not require them and can be realized on-line. The proposed method identifies motor parameters under sensorless control, so rotor position and velocity cannot be used to identify these parameters. However, the proposed method does not need rotor position and velocity, and identified parameters are not affected by these estimation errors. The sensorless control using identified motor parameters is realized, and the effectiveness of the proposed method is verified by experimental results.

show abstract

“…If K id cc is zero, the transfer function of the d-axis current is easily derived as in (16) from (14).…”

Section: B Measurement Of Resistances At a Standstillmentioning

confidence: 99%

“…However, FEM requires the motor dimensions and the material characteristics to calculate the electrical parameters. To consider the parameters in a real situation, the inductances were calculated recursively from the measured voltages and currents, their previous values and the constant stator resistance [14]. The very important role of electrical parameters for sensorless control was considered in [15].…”

Section: Introductionmentioning

confidence: 99%

Parameter Identification of a Synchronous Reluctance Motor by using a Synchronous PI Current Regulator at a Standstill

Kim¹,

Khang²,

Ahn³

2010

Journal of Power Electronics

View full text Add to dashboard Cite

This paper proposes an estimation algorithm for the electrical parameters of synchronous reluctance motors (SynRMs) by using a synchronous PI current regulator at standstill. In reality, the electrical parameters are only measured or estimated in limited conditions without fully considering the effects of the switching devices, connecting wires, and magnetic saturation. As a result, the acquired electrical parameters are different from the real parameters of the motor drive system. In this paper, the effects of switching devices, connecting wires, and the magnetic saturation are considered by simultaneously using the short pulse and closed loop equations of resistance and synchronous inductances. Therefore, the proposed algorithm can be easily and safely implemented with a reduced measuring time. In addition, it does not need any external or additional measurement equipment, information on the motor's dimensions, and material characteristics as in the case of FEM. Several experimental results verify the effectiveness of the proposed algorithm.

show abstract

Parameter-measurement and control of the synchronous reluctance machine including cross saturation

Cited by 48 publications

References 4 publications

Digital implementation of a direct mean torque control for AC servo drives based on a hybrid DSP/FPGA controller system

Digital implementation of a direct mean torque control for AC servo drives based on a hybrid DSP/FPGA controller system

Sensorless control of synchronous reluctance motors using on-line parameter identification method not affected by position estimation accuracy

Parameter Identification of a Synchronous Reluctance Motor by using a Synchronous PI Current Regulator at a Standstill

Contact Info

Product

Resources

About