This paper proposes a modular multilevel converter (MMC) based switched reluctance motor (SRM) drive with decentralized battery energy storage system for hybrid electric vehicle applications. In the proposed drive, cell and half-bridge is connected as submodule (SM), multiple SMs are together MMC. The full-bridge employed to motor. Flexible charging discharging functions each SM obtained by controlling switches in SMs. Multiple working modes achieved. Compared conventional existing SRM...

This article proposes an optimized direct instantaneous torque control (DITC) scheme for switched reluctance motor (SRM) drives with a novel adaptive dynamic commutation strategy, which can effectively reduce ripple and improve system efficiency. To minimize ripple, two operational modes are developed tracking during regions. In Mode I, the error is compensated by outgoing phase current buildup region of incoming phase; in II, demagnetization phase. implement proposed DITC more effective...

In this article, we propose a novel quasi-sinusoidal-wave excitation scheme for switched reluctance motors (SRMs) to minimize torque ripple fully considering the high-order inductance harmonics and their phase angle difference. The production mechanism is interpreted by interaction of defined virtual currents, based on which components, influence factors, compensation principle are analyzed in detail. To reduce caused fundamental zero-axis article proposes <italic...

The hybrid electric bus (HEB) presents an emerging solution to exhaust gas emissions in urban transport. This paper proposes a multiport bidirectional switched reluctance motor (SRM) drive for solar-assisted HEB (SHEB) powertrain, which not only improves the motoring performance, but also achieves flexible charging functions. To extend driving miles and achieve self-charging ability, photovoltaic (PV) panels are installed on decrease reliance fuelsbatteries stations. A front-end circuit with...

This paper proposes an efficiency optimization method for the permanent magnet synchronous motor (PMSM) based powertrain by using field-circuit coupled finite-element (FEM) electric vehicle or hybrid applications. In this paper, alterable flux-weakening (FW) angle is employed in armature current control strategy FW operation. The optimal each certain operating condition can be obtained through pre-selection, which improves system compared to conventional methods. Then, lookup table (LUT)...

This paper proposes a cascaded multiport switched reluctance motor (SRM) drive for hybrid electric vehicle applications, which not only allows flexible energy conversion among the generator/ac grid, battery bank, and motor, but also achieves management (BM) function state-of-charge balance control bus voltage regulation. By integrating packs into asymmetrical half-bridge converter, BM modules are designed to configure multilevel current capacity SRM drive, can accelerate excitation...

In this paper, a novel modular full-bridge converter is proposed for three-phase switched reluctance motors (SRMs), which provides an advanced fault-tolerance solution both the open- and short-circuit faults in switching devices. The composed of two standard six-pack switch modules, providing great benefits industrial massive production due to topology. Under normal conditions, bidirectional current excitation developed converter, where all devices are actively involved, makes full use...

In this study, a new online compensation of torque sharing function (OCTSF) method is proposed to minimise the ripple in switched reluctance motors (SRMs). For SRMs, serious issue which mainly produced by overlapped conduction phases commutation region. conventional TSF-based direct instantaneous control system, incoming phase cannot achieve its reference perfectly and outgoing also drop down quickly Hence, order ripple, TSF realise positive at start used negative end commutation. Moreover,...

Plug-in hybrid electrical trucks (PHETs) are a kind of emerging transport solution to reduce greenhouse gas emissions. Switched reluctance motors (SRMs) one the popular choices for PHETs applications due characteristics rear-earth free, high starting torque, wide-speed range, and good fault tolerance. Usually, more than two converters needed achieve flexible energy conversion among multiple components on board, i.e., generator, battery bank, motor. High-power should be used drive that occupy...

Accurate current detection is of crucial importance for the operation and fault diagnosis motor drives. In this paper, a new phase reconstruction scheme proposed four-phase switched reluctance motors (SRMs) by using one dc-link sensor without voltage penalty. First, an improved converter topology proposed, which has fewer electronic components more compact structure compared with conventional asymmetrical half-bridge converter. Then, advanced pulse injection technology developed to obtain...

This article develops a highly integrated solar-assisted switched reluctance motor (SRM) drive for electric vehicle (EV) applications with electric-drive-reconstructed grid-to-vehicle (G2V) and vehicle-to-grid (V2G)/vehicle-to-load (V2L) functions. The flexible efficient multimode energy transmission is realized among SRM, battery pack, solar photovoltaic (PV) panels, ac grid. Under motoring condition, the standard switch modules are employed to implement bipolar current excitation...

This study proposed a low-cost torque distribution function (TSF)-based direct instantaneous control (DITC) technique for switched reluctance motors (SRMs) by bus current detection under soft-chopping mode. A three-phase 12/8-pole prototype SRM is employed to analyse the phase currents and operation states, new converter connection with sensor placement strategy presented replace sensors in each leg. Considering that conventional contains both chopping demagnetisation current, placed remove...

To decrease the cost, enhance torque performance, and improve system reliability, this article puts forward a novel position sensorless control strategy for switched reluctance machines (SRMs) with fewer current sensors. In article, developed direct (DTC) is proposed ripple mitigation, where hybrid chopping mode employed online compensated according to error. A current-sensing scheme sensors presented. The phase in whole period can be easily detected both control. sensor removed from drive....

In this paper, a universal two-sensor current detection scheme is proposed for the control of different multiphase switched reluctance motors (SRMs) under excitation. scheme, only two sensors are utilized to separate phase currents by selecting flowing through each sensor, and detect excitation lower switch phase. The overlapping states analyzed SRM drives with numbers. Compared existing schemes, method applicable all three-phase, four-phase, five-phase, six-phase drives, without external...

This article proposes a quasi-Z-source (QZS)-based modular switched reluctance motor (SRM) drive to suppress the source current ripple, minimize torque widen constant range and speed range, enhance system reliability. To take full advantage of QZS unit power modules, QZS-based SRM converter is first constructed. Subsequently, three-switch conduction-based compensation mechanism developed deal with plummet issue caused by inherent series excitation mode. Meanwhile, novel four-region direct...

Chinese cabbage is an important leafy vegetable crop with high water demand and susceptibility to drought stress. To explore the molecular mechanisms underlying response drought, we performed a transcriptome analysis of drought-tolerant -sensitive genotypes under stress, uncovered core drought-responsive genes key signaling pathways. A co-expression network was constructed by weighted gene (WGCNA) candidate hub involved in tolerance were identified. Furthermore, ABA biosynthesis pathways...

Chinese cabbage (Brassica rapa L. ssp. pekinensis) is an important leafy vegetable crop cultivated worldwide. Drought one of the most limiting factors for growth, production and quality due to its weak drought tolerance. In order deepen understanding stress response in cabbage, metabolomics studies were conducted drought-tolerant (DT) drought-susceptible (DS) genotypes under water deficit-simulated mild severe conditions. A total 777 metabolites detected, wherein 90 them proposed as...

Permanent magnet synchronous motors (PMSMs) are playing an increasing crucial role in industrial applications, where inaccurate system parameters can affect control performance and even threaten stability. This paper aims to tackle the complex cumbersome recognition algorithms for electrical mechanical of PMSMs, which often result long identification duration low precision. We propose a full-parameter algorithm PMSMs based on signal injection. is simple effective, easy deploy, has short...

This paper proposes a simple and cost-effective current measurement technique for four-phase switched reluctance motor (SRM) control, by splitting the dual bus line of converter, without pulse injection voltage penalty. Only two Hall-effect sensors are utilized, where one is installed in upper to measure phase currents, other placed lower currents. In order realize independent whole turn-on region, switching functions redesigned so that switches phases act as choppers, while employed...

Aliphatic glucosinolates are an abundant group of plant secondary metabolites in Brassica vegetables, with some their degradation products demonstrating significant anti-cancer effects. The transcription factors MYB28 and MYB29 play key roles the transcriptional regulation aliphatic biosynthesis, but little is known about whether BoMYB28 BoMYB29 also modulated by upstream regulators or how, nor gene regulatory networks. In this study, we first explored hierarchical networks a model plant,...

To solve the chattering problem caused by discontinuous switching function in traditional sliding mode observer, a piecewise square root with continuously varying characteristics is designed, and its stability analyzed using Lyapunov criterion. Secondly, according to relationship among bus current, state phase single resistance sampling current reconstruction scheme without sensors adopted, which effectively reduces cost of motor system. Finally, feasibility effectiveness proposed are...