Yihua Hu

Yihua Hu
The University of York · Department of Electronics

Ph.D

About

281
Publications
64,996
Reads
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6,482
Citations
Additional affiliations
January 2020 - present
The University of York
Position
  • Professor (Full)
January 2016 - December 2019
University of Liverpool
Position
  • Lecturer
December 2013 - December 2015
University of Strathclyde
Position
  • Research Associate
Education
September 2006 - December 2011
China University of Mining and Technology
Field of study
  • Power electronics and motor drive
September 1999 - July 2003
China University of Mining and Technology
Field of study
  • electronics engineering

Publications

Publications (281)
Article
Full-text available
The modular multilevel converter (MMC) is one of the most critical implementation forms of high voltage direct current transmission (HVDC). However, the electromagnetic interference (EMI) problems in MMC are unavoidable and complex due to the nonlinear switching behavior of a considerable number of submodules (SMs). In this article, the state-of-th...
Article
The double‐sided permanent magnet linear synchronous motor (DS‐PMLSM) is widely used in the industrial field with high precision and long strokes due to simple construction, high instantaneous thrust and high controllability. However, parasitic issues, such as unavoidable manufacturing tolerances, might cause the symmetrical position deviation of p...
Article
The partial power processing (PPP) concept has been extensively employed in many two-port converters to achieve high efficiency and high power density by modifying one of the original converter ports to be connected in series between input and output. This is attractive but is confined to two-port applications, and how to extend it to multiport app...
Article
Phase current reconstruction (PCR) strategy can improve the fault tolerance of permanent magnet synchronous motor (PMSM) drives. The PCR precision is largely affected by the unmeasurable zones and time-sharing sampling errors. The upper limit (Tlimit) of PCR allowable range can reflect the requirement of different PCR methods for the minimum sampli...
Article
Low-speed drive is one of the challenges for modular multilevel converters (MMCs) due to large capacitor voltage fluctuation. In this paper, a cascaded MMC and cycloconverter (CCV) based machine drive system is proposed to ensure stable operation of medium- -voltage and low-speed machine. The MMC provides medium-frequency ac voltage for the CCV, an...
Data
This paper should be modified, and details are in the supplementary file.
Article
Full-text available
Electric powertrain is constituted by electric machine transmission unit, inverter and battery packs, etc., is a highly-integrated system. Its reliability and safety are not only related to industrial costs, but more importantly to the safety of human life. This review is the first contribution to comprehensively summarize both the feature engineer...
Article
Full-text available
Abstract In terms of the characteristics of multi‐objective and interactions among optimization objectives of the tubular permanent magnet linear generator with 120° phase belt toroidal winding (120°‐TPMLG), a multi‐objective optimization method is proposed to improve the generators performances, which is based on the combination of response surfac...
Article
Full-text available
Double-sided permanent magnet linear synchronous machine with 120° phase belt toroidal windings (120°-TWDSPMLSM) suffers from large detent force due to the end effect and slot effect. Many existing methods can reduce the detent force of the 120°-TWDSPMLSM effectively. But they also minimize the back electromotive force (back-EMF) and thrust simulta...
Article
Full-text available
Abstract The three‐phase permanent magnet synchronous motor (three‐phase PMSM) has gained much popularity in many applications due to its various advantages. In addition, due to the good fault tolerance, simple inverter circuit structure and high torque density, the six‐phase PMSM has better prospects than three‐phase PMSM in biomedical devices, el...
Article
Axial-flux permanent magnet (AFPM) machines are gaining popularity in low speed and high torque applications due to their high torque density, high efficiency and compact structure. In this paper, a dual-rotor slotless (DRS) AFPM machine equipped with equidirectional toroidal winding (EDTW) is proposed and compared with that equipped with conventio...
Article
In a cascaded power converter, the input current ripple of load converter is fed forward to the output capacitor of source converter and results in reshaping the output capacitor current and output voltage ripples of source converter. To investigate the stability effect of feedforward current ripple of load converter on source converter, a cascaded...
Article
This paper presents a less-invasive method for accurately diagnosing of demagnetization fault in permanent magnet synchronous motors (PMSM) using rotor partition. The rotor PMs are partitioned according to certain rules. The PMs condition of each partition is sequentially diagnosed through the signals measured by two additional toroidal yoke coils,...
Article
Aiming at capacitor voltage offset (CVO) in permanent magnet synchronous motor (PMSM) driven by three-phase four-switch inverter (TPFSI), the paper proposes a strategy to resist voltage drift with dynamic voltage compensation. A correction factor is introduced to adjust the capacitor voltage applied to Space Vector Pulse Width Modulation (SVPWM). T...
Article
A voltage balancer remains a good solution of power transfer for bipolar DC grids, which however would increase the costs due to its requirement for additional hardware support. In this paper, an auxiliary power transfer strategy was proposed by using he inactive motor drives affiliated with the bipolar DC grid. During idle periods of the motor dri...
Article
In this paper, a dual-rotor slotless axial-flux permanent magnet (AFPM) motor with equidirectional toroidal winding (ED-TW) is proposed and compared with the AFPM motor with traditional toroidal winding (T-TW) with the same dimensions, number of coils and poles. Different from the T-TW, only the positive sides of coils of the ED-TW are left on one...
Article
Full-text available
The light-emitting diode (LED) is an essential component of intelligent street lighting (ISL) systems. An efficient ISL system can not only reduce power consumption by planning LED illuminating time but also reduce maintenance costs through a high degree of automation. In this paper, a buck-boost converter is used to realise composite transmission...
Article
There is little review work concerning the safety of electric vehicles (EVs) in the crash conditions, leading to the fact that many people, even including those who have been studying EVs for many years, are not familiar with the relevant injury hazards and the corresponding prevention measures. To solve the problem, this paper reviews several safe...
Article
Full-text available
The security of powering systems has been a major problem over the last decade, leading to an increased interest in wireless power and data transfer. In this research paper, a new inductive Wireless Power Transfer (WPT) circuit topology has been used. In traditional WPT circuits, the inverters are used to produce an oscillation for the transmitter...
Article
In this paper, an integrated drive converter of segmented-double-stator switched reluctance machine (SDS-SRM) with isolation and non-isolation charging capabilities for electric vehicle (EV) is presented. The proposed converter can not only reduce the number of the power switches, but also implement multiple operation modes. In non-isolation chargi...
Article
For safety critical transportation applications like all-electric ship propulsion systems (SPS), the reliable system operation is definitely the primary concern. In this paper, a fault-tolerant back-to-back power converter based on the four-switch three-phase (FSTP) topology is applied to a doubly-fed induction machine (DFIM) based all-electric SPS...
Article
The motor drive system plays a significant role in the safety of electric vehicles as a bridge for power transmission. Meanwhile, to enhance the efficiency and stability of the drive system, more and more studies based on AI technology are devoted to the fault detection and diagnosis of the motor drive system. This paper reviews the application of...
Article
Due to the poor working conditions, the three-core distribution cables are prone to faults. Since most of the cables are laid underground, accurate fault location is difficult. Considering the couplings between the earth screen and core conductors, a lump-parameter model of the three-core cable is constructed in this paper. Through the steady-state...
Article
Full-text available
Abstract A permanent magnet synchronous motor (PMSM) is introduced with 120° phase belts toroidal windings (PBTWs) (120°PBTWPMSM), in which its armature reaction field principle is elaborated. Then, the experiment concerning the 120°PBTWPMSM is conducted to verify the validity of the related analysis and the feasibility of the 120°PBTWPMSM. In addi...
Article
In order to reduce the adverse effect of the large thrust ripple of permanent magnet linear synchronous motor (PMLSM) on mover position estimation accuracy and solve the sliding mode chattering problem of the traditional sensorless algorithm based on sliding mode observer (SMO), this paper proposes a systematic method to solve above issues. First,...
Article
Full-text available
With the increase of the component number, the power stress distribution among differential power processing (DPP) converters, control implementation, system cost, and reliability become the most challenging issues for a practical photovoltaic (PV) DPP system. This paper introduces an improved power rating balance (IPRB) control for the PV-to-Bus b...
Article
Full-text available
Different from the typical topology derivation of power electronics converters (PECs) depending on manual effort, this paper aims to explore a programmable method based on graph theory for multi-port dc-dc converters with reduced switches. By mathematically modelling converters with graph theory and transforming their working criterions into the co...
Article
The utilization of 120° phase belt toroidal windings (120°-TWs) can bring power density improvement in a tubular permanent magnet linear generator (TPMLG). Unfortunately, the TPMLG with 120°-TWs (120°-TPMLG) usually involve multiple structural parameters, and the interaction or even conflict among those structural parameters would have strong impac...
Article
Full-text available
There are several non-uniform effects on photovoltaic (PV) modules related to aging in a PV array. These subsequently bring about non-uniform operating parameters with individual PV modules, causing a variance in the PV array performance. The current study undertakes an indoor experimental study to establish and positively affect the efficacy of a...
Article
Full-text available
The edge effect due to the special structure of two degree‐of‐freedom direct induction motor (2DoFDDIM) results in three‐phase asymmetric current, high torque ripple, more loss and low efficiency. In this paper, to weaken edge effect of 2DoFDDIM rotary part, poles optimization is carried out considering the constraint of rotary arc‐armature size. I...
Article
Full-text available
Current stress is essential for the reliability of power switching devices, especially for high voltage applications such as three-level NPC-based dual active bridge (3LNPC-DAB) converters. With the conventional single-phase-shift (SPS) control, the current stress of power devices in 3LNPC-DAB converters is high, which not only affects the conversi...
Article
Full-text available
Bonding wires are one of the most failure-prone component of power electronics modules (PEMs), and silicone gel is usually employed to encase bonding wires. To study the deformation of silicone gel-encased bonding wires, in this paper we report the use of line-field optical coherence tomography (LF-OCT) technique to precisely measure the electrical...
Article
A 2-degree-of-freedom (2DoF) induction machine realizes rotary, linear and helical motions, exhibiting the merits of integrated structure and high material utilization. Compared with traditional electric machines, one of the special factors affecting the electromagnetic performances is the helical motion coupling effect (HMCE). This paper systemati...
Article
Powerline communication (PLC) is one of the key technologies contributing to grid intelligentization and needs to be specially designed for individual converter-based generators and loads. In this paper, a novel power and signal composite modulation (PSCM) strategy is proposed for powerline data transmission in switched reluctance motor (SRM)-based...
Article
In this paper, the effects produced by inter-turn short-circuit faults (ISF) on variables of the direct-drive permanent magnet synchronous motors (DDPMSM) are investigated. A finite element method model is established to calculate the motor variables of DDPMSM which includes average torque, second-harmonic torque, torque ripple, branch differential...
Article
A doubly-fed induction machine (DFIM) is a promising choice for the shipboard propulsion system (SPS) of a more-electric ship (MES) to increase the system safety level by employing less power electronics. In this paper, the detailed impedance model of DFIM-SPS is established, with a salient-pole synchronous generator (SPSG) acting as the power sour...
Article
Switched Reluctance Generator (SRG) possesses the advantages of simple structure, low cost, high reliability and high fault tolerance. For promoting the intelligence of SRG based distributed power network, reliable communication is the key to achieve system monitoring, remote control, fault protection, etc. Power and Signal Composite Modulation (PS...
Article
The current sampling errors in dual-motor group (DMG) cause more adverse effects on system performance than that in a single motor system. To solve this problem, in this paper, a synergistic correction strategy for the above problems in DMG fed by double inverters is proposed. First, an orthogonal PWM carriers strategy is proposed to imitate the "s...
Article
Full-text available
The impact of electromagnetic interference (EMI) is an increasingly important aspect of the performance of switching inverters. The challenges of managing EMI continue to grow with the emergence of wide bandgap (WBG) devices, the trend towards ever-greater integration and higher power rating. This paper reviews suppression methods for the conductiv...
Article
Rapid developments in hydrogen fuel cell (FC) energy and DC microgrid systems have extended the applications of multiphase parallel interleaved step-up converters for stabilizing DC bus voltages. DC microgrid applications include vehicle systems, shipboard power systems, and more electric aircraft, which generate power at low voltage levels. The ca...
Article
This article is focused on the development of an energy management algorithm applied to a multi-stack fuel cell (FC) system for DC microgrid applications. To guarantee the performance of the FC stacks, the current ripple is reduced by employing multiphase interleaved boost converters. A proposed advanced control technique of the multi-stack with mu...
Article
Full-text available
Over the past few years, electricity demand has been on the rise. This has resulted in renewable energy resources being used rapidly, considering the shortage as well as the environmental impacts of fossil fuel. A renewable energy source that has become increasingly popular is photovol-taic (PV) energy as it is environmentally friendly. Installing...
Article
Full-text available
The communication system of a microgrid can transfer the information of electricity price, power consumption and so on between users and the control centre. This capability is of great significance to improve the efficiency and sustainability of power facilities. In this paper, a bidirectional DC–AC converter topology is proposed to achieve the com...
Article
Efficiency and reliability are essential for isolated bidirectional dc-dc converters in electric vehicle (EV) battery charging systems. As one promising power interface between energy storage components and power bus, dual-active-bridge (DAB) dc-dc converters have gained wide applications due to the advantages of galvanic isolation, symmetric circu...
Article
With the partially power decoupled system architecture, a doubly-fed induction motor-based shipboard propulsion system (DFIM-SPS) has the potential of increasing the system safety level by decreasing the penetration of power electronics. In this paper, a phase-locked-loop-free (PLL-free) direct power control (DPC) strategy is proposed for a DFIM-SP...
Article
In this paper, a composite torque regulator is proposed for optimizing the torque tracking performance in direct torque controlled permanent magnet synchronous motor (PMSM) drives. In the proposed composite torque regulator, two new variable hysteresis bands are designed and combined with two constant hysteresis bands. In conventional direct torque...
Article
Due to the great importance of the outward current carried by K⁺ions and the inward one by Na⁺ and Ca²⁺ions in 3-D Chay neuron model, the dynamical behaviors associated with the maximal conductances of K⁺ions channel and mixed Na⁺-Ca²⁺ions channel are explored for better demonstrating dynamical effects on the electrical activities in this paper. By...
Article
To lower the difficulty of fault protection, a doubly-fed induction machine based shipboard propulsion system (DFIM-SPS) that is partially power decoupled is presented. In such an intrinsically safe SPS architecture, a synchronous generator (SG) is employed for power generation, and the accuracy of the parameters of power generation unit (PGU) play...
Article
The dilemma between high control performance and high fault tolerance for a power electronic penetrated shipboard propulsion system (SPS) impedes the development of more-electric ships (MESs). In this paper, with a doubly-fed induction machine (DFIM) electric drivetrain adopted, a partially power decoupled SPS structure is presented to enhance the...
Article
Due to the unbalanced three-phase currents and the torque ripples and speed fluctuations to the drive caused by the current sampling errors of three-phase current sensors and corresponding signal processing circuits, the estimation on current sampling errors is of great importance to eliminate these adverse effects. The observer-based methods, howe...
Article
Full-text available
Photovoltaic (PV) constant power generation (CPG) control is regarded as an advanced active power control by limiting the maximum feed-in power in order to avoid the adverse impacts of high-penetration PV systems such as overloading and over-voltage. Conventional CPG strategies show obvious limitations in terms of the dynamics response, oscillation...
Article
Full-text available
Potential-induced degradation (PID) of photovoltaic (PV) cells is one of the most severe types of degradation, where the output power losses in solar cells may even exceed 30%. In this article, we present the development of a suitable anti-reflection coating (ARC) structure of solar cells to mitigate the PID effect using a SiO 2 ARC layer. Our PID...
Article
This brief presents a novel two-dimensional (2D) piecewise-linear neuron model to characterize the firing activities of a tabu learning neuron. The neuron model has an alterable equilibrium, and its bifurcation mechanism is effectively analyzed by employing an approximate scheme. Coexisting bi-stable firing patterns are revealed and parameter-relat...
Article
Full-text available
The new technology solutions are playing an important role in the hardware security. One of the latest techniques is the use of the Memristor as an encryption element. In this paper, it has been introduced a two-column array inductor for Memristor-Based Wireless Power Transfer (M-WPT) systems. The traditional WPT circuits are based on switches, whi...
Article
Full-text available
Dc-bias current may result in the magnetic flux saturation and endanger the safe operation of switching devices. By regulating the inductor current slope during the transient, this paper proposes a novel transient phase-shift control (TPSC) to suppress the dc-bias current in dual-active-bridge (DAB) converters, which is universal for different phas...
Article
Dynamic performance of maximum power point tracking (MPPT) algorithms is important to ensure high-power output under practical operating conditions. In this article, after reviewing three dynamic test procedures, including stepped operation procedure, day-by-day operation procedure, and EN50530 dynamic test procedure, three typical MPPT algorithms...
Article
Full-text available
By coupling a diode bridge-based second-order memristor and an active voltage-controlled memristor with a capacitor, a three-element-based memristive circuit is synthesized and its system model is then built. The boundedness of the three-element-based memristive circuit is theoretically proved by employing the contraction mapping principle. Besides...
Article
The derivation and implementation multiple-phase-shift based switching surfaces for a dual active bridge (DAB) converter is the main focus of this paper. Firstly, the mathematical models of multiple natural switching surfaces (NSS) under different operation states of DAB converters are derived, which lays the foundation to achieve fast transient re...
Article
Full-text available
When the asymmetric fault occurs in power grid, it will cause the oscillation of the electromagnetic torque of the doubly-fed induction generator(DFIG). The oscillation of the electromagnetic torque will cause the torsional vibration of the drive chain, and the long-term torsional vibration will shorten the service life of DFIG. The analysis shows...
Article
To decrease the cost, enhance the torque performance, and improve the system reliability, this paper puts forward a novel position sensorless torque control strategy for switched reluctance machines (SRMs) with fewer current sensors. In the proposed drive, a developed direct torque control (DTC) strategy is proposed for the torque ripple mitigation...