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A vector control method based on two-phase space vector pulse width modulation is proposed for two- phase hybrid step motor. An especial two-phase inverter bridge based on the up and down bridge complementary conduction and the diagonal bridge conduction at the same time is designed. The modulation method of the two-phase space vector modulation algorithm is derived and given out. Speed and current...
Driving a high current-high power brushless direct current (BLDC) motor is not as simple as driving smaller one. Simple block commutated control will not adequate due to interaction of high current and parasitic components. The high current aspect requires careful consideration not only in components selection and printed circuit board design but also in control scheme. This paper will show the effect...
A holistic approach to determine the optimum number of phases m of an m-phase motor in combination with an m-leg inverter for electric vehicle applications is presented. The optimum offers a significant improvement of the torque and power by approximately 9.6% over the whole operating range in comparison to a 3-phase motor and therefore enhances the power and torque density without expanding the design...
In synchronous reluctance motors (SynRMs), it is difficult to achieve the wide speed drive because the conventional flux-weakening control is affected greatly by the magnetic saturation. In this paper, a new flux-weakening control method using the value of the voltage saturation for SynRMs has been proposed.
This paper analyzes how the switching noise generated in the power section of common three leg inverters used to drive BLDC motor gives rise to common mode conducted emissions. Besides the identification of the primary sources of switching noise and the parasitic elements that usually play a key role in the propagation of such disturbances, a new method based on a tight control of the power MOS commutation...
This paper introduces an efficient modular solution kit for intralogistic drives, which reduces the total energy consumption of all drives in an automated warehouse by more than 15%. The reduction of energy consumption results from the interaction of optimized components (motors, control techniques and regeneration units), which are described in detail in this paper. Different motor concepts like...
To reduce energy consumption, a novel motor system was proposed using two individual current control technologies involving (1) a multiphase inverter and (2) a single-phase inverter. The multiphase inverter technology comprised two sets of three-phase windings connecting two three-phase inverters. Each set of coils connecting the three-phase inverters formed a rotating field. The two windings allowed...
The More Electric Aircraft (MEA) concept has set tight constraints for power density and efficiency of electromechanical actuators in aircraft applications. In order to comply with these high power standards, new wide-bandgap (SiC and GaN) semiconductor devices may be exploited. Unfortunately, the extremely short switching times of these devices can easily trigger high frequency ringing voltage at...
This paper proposes and analyzes the novel single inverter driven series hybrid system. Conventional series hybrid power transfer system features the high-efficiency thanks to the variable torque and speed operation of the internal combustion engine. The increment in cost is, however, still remained as a hurdle. The proposed single inverter driven series hybrid structure reduces two high power inverters...
Electric vehicle transportation system have gained increasing attention in recent years. Low weight, less volume and high efficiency are the main requirement of electric vehicles. Efficiency analysis of drive of electric vehicles is of major concern to increase its driving range per charge. This paper proposes Interior Permanent Magnet Synchronous Motor (IPMSM) Drive controlled by Field Oriented Control[1]...
the majority of drive chain losses in railway vehicles are attributable to motor inefficiency. An attractive solution to reduce these losses, and the associated energy consumption, is the implementation of Permanent Magnet Synchronous Motor (PMSM) technology. PMSMs are not only more efficient, but smaller and lighter than traditional induction machines, which can further benefit energy saving. However,...
This paper proposes a scheme for changing the operation modes of bidirectional interleaved DC/DC converter used in battery powered electric vehicles (EVs). The proposed pattern changes the converter operation from boost to buck according to the DC-link voltage value. This strategy is suggested to save power and increase efficiency of the EV energy storage system (ESS). A buck-boost DC/DC converter...
Africa is the major world region in which populations are deeply affected by water and electricity supply shortages, in spite being blessed with the highest world water aquifer reserves as well as advantageous solar irradiance that encourages harvesting of electricity using photovoltaic cells. This paper deals with the design and performances analysis of a three phase Quasi Z Source Inverter (QZSI)...
In this paper, a method to design the control gains for the voltage phase angle feed-back control method by means of the linearization method, is proposed. The proposed controller designing method is verified by experimental test with a 1kW class PMSM.
In this paper, design of permanent magnetic synchronous motor drive with sinusoidal excitation is pursued with the aim of technical reliability increase and implementation cost decrease. In this regard, the constraints in the way toward motor manufacture are mentioned. Then, steps are taken to cope with these issues by appropriate designing of controller and drive. Cost-effectiveness and ease of implementation...
Removal of the gear-box from an existing electric vehicle (EV) power-train incorporating direct-drive topology is expected to improve motor-to-wheel efficiency. Firstly, this paper discusses the need for a novel direct-drive scheme employing a single on-board motor in an EV. Electric machine and drive design targets for such a supermini EV with direct-drive scheme are fixed based on analytical equations,...
For the characteristics of the high salient rate of interior permanent magnet synchronous motor, a direct control method based on model prediction is designed. It is established that the discretization prediction model of permanent magnet synchronous motor with the vector model of inverter voltage in dq coordinate, and the evaluation functions are constructed of electromagnetic torque ripple and optimal...
The paper provides the subject matter of modeling and development of a permanent magnet electric motor control system. Algorithms of control unit operation are explored. A control program and a math ware of permanent magnet electric motor control unit are developed. A unit control breadboard being able to value the operation efficiency of an electric motor is presented. Electric driver mass-dimensional...
Different converter topologies have been introduced for high power applications in recent years. This paper shows Permanent Magnet Synchronous Motor in Hybrid electrical vehicle is proposed by an interface of boost converter, interleaved converter and inverter as an integrated circuit. An inverter/converter circuit is designed in such a way so as to operate or control the HEV during different modes...
Energy efficiency improvement in variable speed motor drives is of widespread interest because of the rising cost of energy. Permanent magnet synchronous motor (PMSM) drives are especially favored in variable speed applications due to their high efficiency of operation. This research focuses on improving efficiency of the PMSM drive system by reducing the switching frequency of the inverter driving...
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