This paper describes an experimental tool to evaluate and support the development of fault-tolerant machines designed for aerospace motor drives. Aerospace applications involve essentially safety-critical systems which should be able overcome hardware or software faults therefore need fault tolerant. A way achieving this is introduce variable degrees redundancy into system by duplicating one all operations within itself. Looking at drives, multiphase machines, such as brushless dc are...

This paper describes a novel fault-tolerant matrix converter motor drive system which requires an appropriate control strategy and the application of effective fault detection technique. Two types converter, direct indirect are proposed for permanent magnet synchronous against open-circuit faults in safety-critical applications. A is developed order to maintain continuous operation with satisfactory performance. high-speed detecting identifying faulty open-circuited switches located...

This paper investigates the use of a model-predictive control strategy to direct matrix converter. The proposed method combines features classical and space vector modulation technique into modulated control. new solution maintains all characteristics (such as fast transient response, multiobjective using only one feedback loop, easy inclusion nonlinearities constraints system, flexibility include other system requirements in controller), adding advantages working at fixed switching...

This paper presents the study of an alternative space vector modulation (SVM) implementation for matrix converters (MCs), which reduces output common mode (CM) voltage. The strategy is based on replacing MC zero vectors with rotating ones. In doing this, CM voltage (CMV) can be reduced, which, in turn, leakage current. By reducing current, flows inside motor through bearings and windings, induction (IM) deterioration slowed down. describes SVM pattern analyzes CMV current paths. Simulation...

The paper deals with the small-signal stability analysis of aircraft ac frequency-wild power systems representing a real ac-dc hybrid distribution architecture multiplicity actuators, loads, and bus geometries. <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$dq$</tex> modelling approach is applied to derive individual system component models constitute corresponding generalized model as powerful flexible tool. element can be interconnected in...

With the increased use of power electronics in aerospace, automotive, industrial, and energy generation sectors, demand for highly reliable dense solutions has increased. Matrix converters become attractive when taking into account demands high reliability density. their lack large bulky dc-link capacitors, high-power densities are possible with capability to operate ambient temperatures. When a converter needs reliability, under tight weight volume constraints, it is often not have an...

A novel fault-tolerant flux-switching permanent-magnet synchronous machine drive topology is presented, which able to operate during open- and short-circuit winding converter faults. The scheme based on a dual motor supplied from two separate vector-controlled voltage-sourced inverter drives. windings are arranged in way so as form independent isolated sets. Simulation experimental work will detail the drive's performance both healthy faulty scenarios including faults show robustness these...

This paper deals with the design, construction, and experimental verification of a high-force-density, tubular, linear, permanent-magnet motor driven from high-power-density matrix converter for an aerospace application. also describes implementation novel thermal management technique phase windings electrical machines. The introduces higher conductivity path between center slot cooling arrangement, thus increasing heat flow away center. An introduction to design is first given, after which...

This paper presents an experimental efficiency comparison study between two different direct ac-ac converter topologies; a matrix and indirect converter. The evaluation is performed under variable load conditions using both discrete silicon isolated gate bipolar transistor carbide MOSFETs working at power levels up to 9 kW. Each loss measurement carried out analyzers; one placed the input output of study. To facilitate this measurement, filter was necessary in addition normal filter. Both...

This paper highlights the advancement in high speed generation applications along with describing state of art materials and technologies enabling such an application uptake. Following introduction, highlighting current situation energy market, first section describes some recent developments used construction a drive. Various areas are dealt three design considerations various machine topologies discussed four. In five case study is presented preliminary procedure to select topology for...

This paper presents an analytical and experimental comparison between silicon insulated gate bipolar transistors carbide MOSFETs when used in a direct ac-ac matrix converter (MC) circuit. The switching performance of the two devices is analyzed efficiency/losses are measured order to develop loss model that will help engineers design MC circuits using these types devices. Particular attention given this discrepancies found datasheet values data. electromagnetic interference (EMI) MCs also...

This paper presents a solution to the control of third harmonic neutral point in VIENNA rectifier. A hybrid method combining dynamic adjustment factor with voltage deviation split dc link is proposed. The fluctuation has been analyzed and reason for described mathematic model. In addition minimizing third-harmonic component neutral-point voltage, proposed also provides immunity influence changes capacitor voltage. Furthermore, significant caused by asymmetric parameters or unbalanced load...

This paper investigates some of the challenges encountered during implementation a Silicon Carbide JFET matrix converter which has been designed to meet specific power density 20 kW/L with forced air cooling. After brief introduction main features hardware converter, an insight into control strategy and controller platform adopted is given particular attention issues relating high switching frequencies on requirements performance implications gate drive circuitry. An analysis results show...

This paper presents an auto-tuning method for a proportion plus integral (PI) controller permanent magnet synchronous motor (PMSM) drives, which is supposed to be embedded in electro-mechanical actuator (EMA) control module aircraft. The method, based on relay feedback with variable delay time, explores different critical points of the system frequency response. Nyquist plant can then derived from time and filter constant. coefficients PI obtained by calculation while shifting point specific...

This paper investigates a novel model- predictive control strategy to an induction motor fed by matrix converter with multi-objective capability. The proposed method combines the features of classical Model Predictive Control and Space Vector Modulation technique into Modulated Control. new solution maintains all characteristics (such as fast transient response, using only one feedback loop, easy inclusion nonlinearities constraints system, flexibility include other system requirements in...

This paper proposes a novel control strategy for matrix converters that is coined “direct predictive current-error vector control.” The proposed method retains the advantageous features of both modulation scheme and predictive-based controller. result controller capable good dynamic performance steady-state response with fixed switching frequency operation. Control load input currents direct converter using demonstrated in this by simulation experimental results.

A fault-tolerant matrix converter drive topology, which can be effectively used to a permanent magnet synchronous motor for research in critical applications, with particularly emphasis on aerospace is presented. The proposed configuration, four output-phase converter, uses normally redundant output phase connected between the input supply and neutral point of order provide capability presence faults. This deal open-circuit faults caused by failures either power or machine windings. Without...

Matrix converters have become popular due to their capability for direct ac-ac conversion without a dc-link capacitor. Several modulation methods been proposed matrix including Space Vector Modulation (SVM), which has widely used in conjunction with numerous different control approaches as it can ensure sinusoidal input and output currents unity power factor fixed switching frequency. Model Predictive Control (MPC) is strategy introduced recently several benefits like fast transient response...

This paper investigates the use of a novel model-predictive control strategy to an induction motor fed by matrix converter. The proposed method combines features classical Model Predictive Control and Space Vector Modulation technique into Modulated Control. new solution maintains all characteristics (such as fast transient response, multi-objective using only single feedback loop, easy inclusion nonlinearities constraints system, flexibility include other system requirements within...

The necessary reliability of safety-critical aerospace drive systems is often partly achieved by using fault-tolerant (FT) electrical machines. There are numerous published literatures on the design FT machines as well control algorithms used to maintain operation with an incurred fault. This study set look at rotor losses in three- and five-phase surface mount permanent magnet when operating faulty mode order highlight influence post-fault strategy winding configuration. Although work...

This paper compares the calculated reliability of a matrix converter with controlled rectifier/inverter topology for an aerospace motor drive application. These topologies are functionally equivalent in terms input power quality and regenerative capabilities. The military handbook MIL-HDBK-217F guidelines have been used to predict reliability. Although has higher number semiconductor switches, these switches subjected lower voltage stress, which can shown increase device When this factor is...

This paper will explain the concept of a matrix converter, its features, advantages - disadvantages and emergency / failure modes which require some sort protection. The discuss existing protection strategies introduce more robust approach. Two target applications be used to limitations strategies. first 25KVA Matrix converter-Permanent magnet synchronous machine based aircraft actuator second, 100KVA Permanent drive. clamping arrangement fitted two then discussed results presented for...

This paper proposes two types of fault tolerant matrix converter drive topologies, namely a four-leg single-stage and two-stage converter, both used to permanent magnet synchronous motor (PMSM) against open phase failure in aerospace applications. To improve the reliability system under neutral is connected fourth leg each without modifying space vector modulation techniques. maintain satisfactory performance control strategy needs be modified during occurrence so that able operate...

The matrix converter is a direct AC-AC power topology that does not contain an intermediate DC-link stage. This paper presents different enabling technologies to enhance the suitability of for aerospace applications. use silicon carbide devices improve efficiency and reduce system weight together with improved, high speed fault detection technique are presented. Results from prototype converters validate concepts also