Motor for Direct Drive of Electric Wheelchair

2017 ◽  
Vol 31 ◽  
pp. 94-103 ◽  
Author(s):  
Ján Kaňuch ◽  
Peter Girovský
Keyword(s):  
Electric Vehicles ◽  
Permanent Magnets ◽  
Low Voltage ◽  
Frequency Converter ◽  
Synchronous Motor ◽  
Open Circuit ◽  
Direct Drive ◽  
Drive Unit ◽  
Three Phase ◽  
Load Simulation

Described in the paper is analysis of properties of synchronous motor with outer permanent magnets rotor. The motor, having an atypical construction, is powered by low voltage from a three phase frequency converter. It is suitable as a drive unit for direct power drives of small electric vehicles and electric wheelchairs. Theoretical analysis of the synchronous motor with outer permanent magnets rotor starts with the air gap space configuration. The present paper describes the main results from open-circuit and load simulation. The section of paper describes the mechanical construction of prototype of the synchronous machine. Experimental results of measurements of the machine prototype in the generatoric and motoric mode are described. Experimental measurements verified stability of the motor parameters at its loading.

Model predictive torque control of a six-phase PM synchronous hub motor with auxiliary voltage vectors

2020 ◽  
pp. 1-17
Author(s):  
Hao Xu ◽  
Long Chen ◽  
Xiaodong Sun
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Control Method ◽  
Research Direction ◽  
Synchronous Motor ◽  
Torque Control ◽  
Experimental Results ◽  
Vector Model ◽  
Dynamic State ◽  
Three Phase

Permanent magnet synchronous hub motors (PMSHMs) have been gradually introduced into the applications of electric vehicles. In order to output more torque, many researchers turned their research direction to six-phase motors. Because it is composed of two sets of three-phase windings, there will be interference between the windings, affecting the performance of the motor. In order to improve the steady and dynamic-state performance of permanent magnet six phase synchronous motor, a predictive torque control method based on multi vector model is proposed in this paper. Finally, experimental results show the effectiveness of this method.

scholarly journals Unidirectional voltage converter for battery electric vehicle ultrafast charger

2020 ◽  
Author(s):  
Jerzy Ryszard Szymanski ◽  
Marta Zurek-Mortka ◽  
Dulal Acharjee
Keyword(s):  
Electric Vehicles ◽  
Frequency Converter ◽  
Motor Drives ◽  
Phase Voltage ◽  
Dc Microgrid ◽  
Pwm Inverter ◽  
Ac Motor ◽  
Three Phase ◽  
Fast Charging ◽  
Ac Motor Drives

Abstract This paper proposes the use of a frequency converter used in the AC motor drives to build a fast charging battery converter for electric vehicles (EV). The possibility of using semiconductor integrated modules with two-level inverters and diode rectifiers for the construction of high power voltage DC/DC converters has been demonstrated. The DC voltage of the EV battery during charging is obtained by rectifying the three-phase voltage of the PWM inverter. A 600 V DC microgrid was used to power the inverter. Simulation tests of the DC/DC converter model were carried out. The results of simulation tests were verified experimentally on a laboratory stand.

scholarly journals Cascade frequency converters control features

2020 ◽  
Vol 241 ◽  
pp. 37
Author(s):  
A. Vorontsov ◽  
V. Glushakov ◽  
M. Pronin ◽  
Yu. Sychev
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Power Converters ◽  
Low Voltage ◽  
Frequency Converter ◽  
Frequency Converters ◽  
Three Phase ◽  
In Series ◽  
Load Characteristics ◽  
Active Rectifiers

The structures of systems with high-voltage cascade frequency converters containing multi-winding transformers and low-voltage low-power converters connected in series at each output phase of the load are considered. Low-voltage blocks contain three-phase diode or active rectifiers, DC capacitor filters, single-phase stand-alone voltage inverters and block disconnecting devices in partial modes (in case of failure when part of the blocks are disconnected). The possibilities of operation of cascade converters are determined, equations for correcting tasks to units in partial modes are given, tables of correction of tasks with estimates of achievable load characteristics are proposed. The results of experiments on the model of a powerful installation with a cascade frequency converter are presented, confirming the possibility of ensuring the symmetry of the load currents when disconnecting part of the blocks and the asymmetry of the circuit.  

Radial Electromagnetic Force Wave Analysis of Permanent Magnet Synchronous Motor for Electric Vehicle

2011 ◽  
Vol 211-212 ◽  
pp. 948-952 ◽  
Author(s):  
Cong Gan Ma ◽  
Shu Guang Zuo ◽  
Rong He ◽  
Lv Chang He
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Electromagnetic Force ◽  
Parametric Design ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Space Distribution ◽  
Magnetic Flux Density ◽  
Phase Voltage ◽  
Three Phase

In this paper, Radial Electromagnetic Force Wave, which causes the magnetic noise of the permanent magnet synchronous motor used in the electric vehicles of the Shanghai Expo, is studied by programming with ANSYS Parametric Design Language (APDL). The magnetic properties such as magnetic induction, magnetic field, magnetic flux density between the stator and the rotor are researched at no load and three-phase voltage load. Then all of the data is combined with Maxwell’s equations to calculate the space distribution and time distribution of radial electromagnetic force wave. Finally, it is made a main conclusion that main frequencies of radial electromagnetic force wave at the 3-phase voltage load are 200*k Hz (k=1, 2, 3…) and the corresponding levels are 3*k (k=1, 2, 3…).What’s more, it is also concluded that the radial electromagnetic force wave gain at Level 9 and 600 Hz reaches the peak.

Electromagnetic Induced Force Study in the Magnetoelectric Generator Winding

2015 ◽  
Vol 792 ◽  
pp. 3-7
Author(s):  
Aleksandr Tatevosyan ◽  
Andrey Tatevosyan ◽  
Valeriya Fokina
Keyword(s):  
Decision Making ◽  
Permanent Magnets ◽  
Frequency Converter ◽  
Induction Machine ◽  
Synchronous Generator ◽  
Load Resistance ◽  
Electrical Network ◽  
Synchronous Generators ◽  
Three Phase ◽  
Theoretical Foundations

The paper considers the study of the electromagnetic force (EMF) of a synchronous generator based on the three-phase induction machine. The stand includes: a frequency converter, an induction motor, a synchronous generator, a three-phase rectifier, an active load resistance, power protection and inclusion industrial electrical network. The study provides an analytical solution to one of the main objectives within theoretical foundations of electrical engineering, formulated so to reflect the decision making while designing new types of synchronous generators with permanent magnets.

scholarly journals Design and Analysis of a Novel Double-Stator Double-Rotor Motor Drive System for In-Wheel Direct Drive of Electric Vehicles

Machines ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 27
Author(s):  
Chunzhen Li ◽  
Xinhua Guo ◽  
Jinyuan Fu ◽  
Weinong Fu ◽  
Yulong Liu ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Permanent Magnets ◽  
Direct Drive ◽  
Element Analysis ◽  
Flexible Control ◽  
Main Work ◽  
Synthetic Materials ◽  
Flux Modulation ◽  
Motor Drive System ◽  
Slot Structure

In-wheel direct drive (IWDD) of electric vehicles (EVs), which simplifies the transmission system and facilitates flexible control of vehicle dynamics, has evolved considerably in the EV sector. This paper proposes a novel double-stator double-rotor motor (DSDRM) with a bidirectional flux modulation effect for in-wheel direct drive of EVs. With the proposed special design, a synthetic-slot structure with synthetic materials containing copper and permanent magnets (PMs) in the slots of the motor is ingeniously employed, and the outer and inner rotors are mechanically connected together as a single rotor, making its mechanical structure less complicated than those of two-rotor machines. The main work of this paper involves the design, analysis, construction, and testing of the proposed machine. The DSDRM with a synthetic-slot structure was demonstrated to be feasible by finite element analysis (FEA), prototype fabrication, and experimental results. In addition, vehicle layout with DSDRM is presented and verified by the vehicle road test experiment. Thus, the DSDRM with the synthetic-slot structure can be used as a hub motor for in-wheel direct drive of EVs.

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