A new characteristics-variable two-input/output filter in D-module-designs, realizations, and equivalence

Shinnaka, Shinji

doi:10.1109/tia.2002.802896

Cited by 20 publications

(11 citation statements)

References 13 publications

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“…The transfer function including the filtering system in Fig. 2 as a special case is also introduced in [25]. The transfer function of the extraction of the fundamental positive sequence component based on the complex plane is…”

Section: Transfer Function and Analysis Of Srf-pllmentioning

confidence: 99%

A novel hybrid coordinates multiple decoupled phase‐locked loop under nonideal grid conditions

Liu

Wang

2019

IEEJ Transactions Elec Engng

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A novel hybrid coordinates multiple decoupled phase-locked loop (HCMD-PLL) is presented to improve the performance of the PLL under nonideal grid conditions. Based on the Clark transform and the first-order low-pass filter, the complex coefficient filter is derived to analyze phase-locked loop. It is different from the phase-locked loop with a complex coefficient filter. On this basis, the multiple-complex-coefficient band-pass filter of HCMD-PLL is derived, and the equivalent transfer function of the decoupling of the fundamental positive sequence, negative sequence and harmonic components is obtained, and the magnitude and phase frequency responses are analyzed. The fundamental positive sequence component is extracted without phase shift and amplitude attenuation under the nonideal grid conditions, eliminating the effect of specific-order harmonics components because the amplitude is attenuated to zero. And the specific-order harmonic component can also be extracted precisely. The interaction from the various specific components is eliminated. The stability of the system is analyzed by the pole distribution of the closed-loop system. The stationary αβ coordinate system for PLL is adopted to suppress the change of the grid voltage. Simulation and experimental results verify the effectiveness of the HCMD-PLL. (Non-member) received the M.S. degree in power electronics and power drives from the school of Information and Electrical Engineering, China University of Mining and Technology in 2014 and is currently pursuing the Ph.D. degree in School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University. He has worked on multilevel converters, reactive power compensation and power electronic power transmission.Lifeng Guo (Non-member) received the M.S. degree in power electronics and power drives from the school of Information and Electrical Engineering, China University of Mining and Technology in 2013 and is presently working in China Ship Development and Design Center Shanghai Branch. He has worked on high power multilevel converters and vessel integrated power system.

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Section: Transfer Function and Analysis Of Srf-pllmentioning

confidence: 99%

A novel hybrid coordinates multiple decoupled phase‐locked loop under nonideal grid conditions

Liu

Wang

2019

IEEJ Transactions Elec Engng

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“…It is based on the filter in D-module [17], [18], but uses only one filter compared to the mirror-phase estimator [17]. It also has the merit of completely rejecting the dc offset and drifts from the stator current acquisition chain.…”

Section: B Rotor Position and Speed Estimatormentioning

confidence: 99%

“…The vector (dual-input/output) filter in D-module is a class of vector filters that discriminates the phase polarity [17], [18]. This is essential to solve the vector BPF problem presented above because the useful negative-sequence harmonic i cn1 is separated from the positive sequence i cp1 that has the same frequency ω c but opposite phase sign (15).…”

Section: Design Of Filter In D-modulementioning

confidence: 99%

“…The interior permanent magnet synchronous motor (IPMSM) saliency is given by: 1) a large intrinsic spatial saliency due to the high inductance ratio L q /L d = 2 − 4 and 2) a small saturation-induced saliency [5], [6]. The injected signal superimposed on top of the driving fundamental stator voltage can be: 1) persistent high-frequency (HF) rotating (revolving) or alternating (pulsating) voltage [1], [5]- [18]; 2) discrete voltage pulses [1]; and 3) modified pulsewidth modulation (PWM) pulses [1], [19]. The resulting carrier-current harmonics, modulated by the position-dependent inductances, contain the rotor position information that is extracted using signal processing techniques [filters, phase-locked loop (PLL)].…”

mentioning

confidence: 99%

“…10(e), after 2 s]. The θ λ is computed based on a simplified expression if λ sβ > 0, then θ λ = a, else θ λ = 2π − a, a = π/2 * (λ ŝ − λ sα )/λ ŝ (18). …”

mentioning

confidence: 99%

See 2 more Smart Citations

Combined Flux Observer With Signal Injection Enhancement for Wide Speed Range Sensorless Direct Torque Control of IPMSM Drives

Andreescu

Pitic

Blaabjerg

et al. 2008

IEEE Trans. Energy Convers.

218

108

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This paper proposes a motion-sensorless control system usingdirect torque control with space vector modulation for interior permanent magnet synchronous motor (IPMSM) drives, for wide speed range operation, including standstill. A novel stator flux observer with variable structure uses a combined voltagecurrent model with PI compensator for low-speed operations. As speed increases, the observer switches gradually to a PI compensated closed-loop voltage model, which is solely used at high speeds. High-frequency rotating-voltage injection with a single D-module bandpass vector filter and a phase-locked loop state observer with a new synchronization procedure are used to estimate the rotor position, which is needed only by the current model in stator flux observer at low speeds. A new rotor speed estimator for the whole speed-loop range, based on the stator flux speed estimation with a new dynamic correction depending on estimated torque, is proposed and tested. Extensive simulation results and significant experimental results provided good performance for the proposed IPMSM sensorless system in more than 1:1000 speed range, under full-load operation, from very low speeds (1 r/min experimental) up to rated speed.

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D-estimation method for grid synchronization of single-phase power converters: analysis, linear modeling, tuning, and comparison with SOGI-PLL

Sepahvand,

Emdadi

2024

Electr Eng

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A new characteristics-variable two-input/output filter in D-module-designs, realizations, and equivalence

Cited by 20 publications

References 13 publications

A novel hybrid coordinates multiple decoupled phase‐locked loop under nonideal grid conditions

A novel hybrid coordinates multiple decoupled phase‐locked loop under nonideal grid conditions

Combined Flux Observer With Signal Injection Enhancement for Wide Speed Range Sensorless Direct Torque Control of IPMSM Drives

D-estimation method for grid synchronization of single-phase power converters: analysis, linear modeling, tuning, and comparison with SOGI-PLL

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