scholarly journals Impact of Current Pulsation on BLDC Motor Parameters

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 587
Author(s):  
Andrzej Sikora ◽  
Marcin Woźniak
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Supply System ◽  
Energy Losses ◽  
Bldc Motor ◽  
Power Cycle ◽  
Proposed Modification ◽  
Current Pulsation

BrushLess Direct-Current (BLDC) motors are characterized by high efficiency and reliability due to the fact that the BLDC motor does not require power to the rotor. The rotor of the BLDC motor consists of permanent magnets. When examining the waveform of the current supplied to the motor windings, significant current ripple was observed within one power cycle, where the optimum value would be the constant value of this current during one power cycle. The variability of this current in one motor supply cycle results from the variability of the electromotive force induced in the motor winding. The paper presents a diagram of the power supply system consisting of an electronic commutator and a DC/DC converter made by the authors, and a proposed modification of the power supply system reducing the current pulsation of the motor windings and thus the possibility of reducing energy losses in the motor windings. The paper presents numerous results of measurements which showed a significant reduction in energy losses in the case of low-load operation.

Development of High Efficiency Contactless Power Supply System for Stocker System

2010 ◽  
Vol 24 (2) ◽  
pp. 77-85
Author(s):  
Gye-Ho Hwang ◽  
Won-Gon Kim ◽  
Jong-Bo Yun ◽  
In-Ho Moon ◽  
Bong-Seob Lee ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
High Efficiency ◽  
Supply System

scholarly journals Model and Simulation of Permanent Magnets Synchronous Machine (PMSM) of the Electric Power Supply System (EPS), in Accordance with the Concept of a More Electric Aircraft (MEA)

2018 ◽  
Vol 16 ◽  
pp. 03004 ◽  
Author(s):  
Lucjan Setlak ◽  
Rafał Kowalik
Keyword(s):  
Power System ◽  
Electric Power ◽  
Power Supply ◽  
Power Supply System ◽  
Permanent Magnets ◽  
Synchronous Generator ◽  
Supply System ◽  
Power Sources ◽  
Electric Aircraft ◽  
More Electric Aircraft

Based on the mathematical model of synchronous electric machine, basing on permanent magnets, presented in this paper, the key importance of alternator AC power sources in the form of generator (for conventional aircraft) and in the form of integrated unit starter/AC synchronous generator S/G AC (with respect to advanced aircraft concept in the field of more/all electric power MEA/AEA) was highlighted. In addition, through the analysis and selected simulations of the power supply system of a modern aircrafts, sources of onboard electrical energy (synchronous generator, integrated unit starter/AC generator) were located in board autonomic power system ASE (EPS, PES). Key components of this system are the electro-energetic power system EPS and the energo-electronic power system PES. Additionally, the analysis and exemplary simulations of key electricity sources based on mathematical models have contributed to highlighting the main practical applications in line with the trend of a more electric aircraft.

scholarly journals The Study of Permanent Magnets Synchronous Machine (PMSM) of the Autonomous Electric Power Supply System (ASE), compatible with the Concept of a More Electric Aircraft (MEA)

2018 ◽  
Vol 16 ◽  
pp. 03001 ◽  
Author(s):  
Lucjan Setlak ◽  
Rafał Kowalik
Keyword(s):  
Power System ◽  
Mathematical Models ◽  
Power Supply ◽  
Power Supply System ◽  
Permanent Magnets ◽  
Supply System ◽  
Power Sources ◽  
Electric Power Supply ◽  
Electric Aircraft ◽  
More Electric Aircraft

Based on the analysis and mathematical models of synchronous electric machines (motor/generator), basing on permanent magnets, presented in this paper, the main importance of alternator AC power sources in the form of starter/generator (for conventional aircraft) and in the form of integrated unit starter (motor)/AC synchronous generator S/G AC (with respect to advanced aircraft concept in terms of more electric aircraft) was highlighted. Additionally, through the analysis and selected simulations of the on-board autonomous power supply system of the modern aircrafts, sources of electrical energy (synchronous motor/generator, integrated unit starter/AC generator) were located in board autonomic power system ASE (EPS, PES). Main components of this system are the electro-energetic power system EPS and the energo-electronic power system PES. In addition, the analysis and exemplary simulations of main electricity sources based on mathematical models have contributed to highlighting the main practical applications in accordance with the concept of MEA.

scholarly journals Research on Digital Synchronous Rectification for a High-Efficiency DC-DC Converter in an Auxiliary Power Supply System of Magnetic Levitation

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 51 ◽  
Author(s):  
Zhiqin Zhao ◽  
Xiaoqiong He
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
High Efficiency ◽  
Magnetic Levitation ◽  
Supply System ◽  
Zero Voltage Switching ◽  
Auxiliary Power ◽  
Zero Current Switching ◽  
Zero Current ◽  
Synchronous Rectification

In this paper, a new auxiliary power supply system of magnetic levitation based on the LLC DC-DC converter is proposed. The switches of the DC-DC converter are SiC MOSFET, which enables high frequency, high temperature, and high power density. For further improving the efficiency of the system and realizing the stability of the output voltage under different load conditions, the digital synchronous rectification (DSR) based on the phase shift control strategy is proposed. The prototype of the LLC DC-DC converter based on SiC MOSFET is implemented, which can realize zero voltage switching (ZVS) and zero current switching (ZCS). Then, the thermal image of DSR is presented, which proves that the power loss of SiC MOSFET with DSR is relatively low. Additionally, the system efficiency among the Si IGBT, SiC MOSFET, and SiC MOSFET with DSR is analyzed and the prototype demonstrates 98% peak efficiency. Finally, simulations, experiments, and data analysis prove the superiority of the proposed DSR strategy for the new auxiliary power supply system of magnetic levitation.

Adaptive Solar Power Supply System Based on SCM

2014 ◽  
Vol 1030-1032 ◽  
pp. 485-488
Author(s):  
Kai Xuan Han ◽  
Shao Fei Wang
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
High Efficiency ◽  
Solar Power ◽  
Electric Energy ◽  
Supply System ◽  
The Sun ◽  
Low Carbon ◽  
Lighting System ◽  
Hardware Circuit

This paper presented a kind of design principle and method of the adaptive solar power supply system, and draw out the lighting system, hardware circuit and software flow charts of the system. Using MCU control solar lighting system to track the sun direction, the system collects the sun angle information through optical sensor in order to use solar energy in high efficiency. The device not only can provide reliable electric energy for the highway cameras, visibility detectors and other dispersion equipment, but has the advantages of low carbon, environmental protection, intelligence, etc.

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