Aircraft technology is moving toward what is known as More Electric Aircraft. This technology aim... more Aircraft technology is moving toward what is known as More Electric Aircraft. This technology aims to increase the amount of electrical power equipments rather than mechanical or hydraulic equipments. This paper present an analytical method of calculating reactive and harmonic current and using this current as a reference to feed a series active filter to compensate the harmonic currents generated by a non linear load. Keywords: series active power filter (APF), harmonic and reactive current, more electric aircraft (MEA), variable frequency source.
Second IEE International Conference on Power Electronics, Machines and Drives, 2004
ABSTRACT Recent advancements in power electronics technologies are enabling new systems to be dev... more ABSTRACT Recent advancements in power electronics technologies are enabling new systems to be developed and applied to aerospace applications. The growing trend is to connect the AC generator to the aircraft engine via a direct connection or a fixed ratio transmission, thus resulting in the generator providing a variable frequency supply. This move offers benefits to the aircraft such as reducing the weight and improving the reliability. Many aircraft power systems are now operating with a variable frequency over a typical range of 350 Hz to 800 Hz which varies with the engine speed. This paper presents the results from a simple scheme for an adaptive control algorithm which could be suitable for use with an electric actuator (or other) aircraft load. The design of this system poses significant challenges due to the nature of the load range and supply frequency variation. Details will be given on the design methodology and simulation results obtained.
There is a general move in the aerospace industry to increase the amount of electrically powered ... more There is a general move in the aerospace industry to increase the amount of electrically powered equipments on future aircraft. This trend is referred to as the “More Electric Aircraft”. It assumes using electrical energy instead of hydraulic, pneumatic and mechanical means to power virtually all aircraft subsystem including flight control actuation, environmental control system and utility function. The concept
2012 8th International Symposium on Mechatronics and its Applications, 2012
Biofeedback is a therapy currently being researched to treat many psychological and physiological... more Biofeedback is a therapy currently being researched to treat many psychological and physiological disorders. EEG biofeedback involves monitoring and altering brain activity. It has been shown to effectively treat such problems as epilepsy and brain disorders. To apply this technology on a personal setting, an inexpensive and user-friendly device, capable of processing brain signals and providing logical interpretation of the
2007 IEEE International Electric Machines & Drives Conference, 2007
ABSTRACT There is a general move in the aerospace industry to increase the amount of electrically... more ABSTRACT There is a general move in the aerospace industry to increase the amount of electrically powered equipment on future aircraft. This is generally referred to as the "more electric aircraft" and brings on a number of technical challenges that need to be addressed and overcome. Recent advancements in power electronics technology are enabling new systems to be developed and applied to aerospace applications. The growing trend is to connect the AC generator to the aircraft engine via a direct connection or a fixed ratio transmission thus, resulting in the generator providing a variable frequency supply. This move offers benefits to the aircraft such as reducing the weight and improving the reliability. Many aircraft power systems are now operating with a variable frequency over a typical range of 350 Hz to 800 Hz which varies with the engine speed[1,2]. This paper presents the results from a simple scheme for an adaptive control algorithm which could be suitable for use with an electric actuator (or other) aircraft load. The design of this system poses significant challenges due to the nature of the load range and supply frequency variation and requires many features such as: 1) Small input current harmonics to minimize losses., 2) Minimum size and weight to maximize portability and power density. Details will be given on the design methodology and simulation results obtained.
IEE Colloquium on Power Electronics for Demanding Applications, 1999
Power electronics for aircraft application. Dr Mohamad H Taha Lucas Aerospace - Hemel Hempstead .... more Power electronics for aircraft application. Dr Mohamad H Taha Lucas Aerospace - Hemel Hempstead ... Figure (2) shows the block diagram of a 22 kW proposed converter, which is connected to a variable frequency generator and outputs 1 15 V RMS 400 Hz constant frequency. ...
... also aims to obtain a fust order response with a bandwidth of 3k& To achieve this the com... more ... also aims to obtain a fust order response with a bandwidth of 3k& To achieve this the compensator has the following transfer function. ... through the full range of operational and environmental conditions likely to be encountered through the life of the aircraft, or support facility, in ...
Aircraft technology is moving toward what is known as More Electric Aircraft. This technology aim... more Aircraft technology is moving toward what is known as More Electric Aircraft. This technology aims to increase the amount of electrical power equipments rather than mechanical or hydraulic equipments. This paper present an analytical method of calculating reactive and harmonic current and using this current as a reference to feed a series active filter to compensate the harmonic currents generated by a non linear load. Keywords: series active power filter (APF), harmonic and reactive current, more electric aircraft (MEA), variable frequency source.
Second IEE International Conference on Power Electronics, Machines and Drives, 2004
ABSTRACT Recent advancements in power electronics technologies are enabling new systems to be dev... more ABSTRACT Recent advancements in power electronics technologies are enabling new systems to be developed and applied to aerospace applications. The growing trend is to connect the AC generator to the aircraft engine via a direct connection or a fixed ratio transmission, thus resulting in the generator providing a variable frequency supply. This move offers benefits to the aircraft such as reducing the weight and improving the reliability. Many aircraft power systems are now operating with a variable frequency over a typical range of 350 Hz to 800 Hz which varies with the engine speed. This paper presents the results from a simple scheme for an adaptive control algorithm which could be suitable for use with an electric actuator (or other) aircraft load. The design of this system poses significant challenges due to the nature of the load range and supply frequency variation. Details will be given on the design methodology and simulation results obtained.
There is a general move in the aerospace industry to increase the amount of electrically powered ... more There is a general move in the aerospace industry to increase the amount of electrically powered equipments on future aircraft. This trend is referred to as the “More Electric Aircraft”. It assumes using electrical energy instead of hydraulic, pneumatic and mechanical means to power virtually all aircraft subsystem including flight control actuation, environmental control system and utility function. The concept
2012 8th International Symposium on Mechatronics and its Applications, 2012
Biofeedback is a therapy currently being researched to treat many psychological and physiological... more Biofeedback is a therapy currently being researched to treat many psychological and physiological disorders. EEG biofeedback involves monitoring and altering brain activity. It has been shown to effectively treat such problems as epilepsy and brain disorders. To apply this technology on a personal setting, an inexpensive and user-friendly device, capable of processing brain signals and providing logical interpretation of the
2007 IEEE International Electric Machines & Drives Conference, 2007
ABSTRACT There is a general move in the aerospace industry to increase the amount of electrically... more ABSTRACT There is a general move in the aerospace industry to increase the amount of electrically powered equipment on future aircraft. This is generally referred to as the "more electric aircraft" and brings on a number of technical challenges that need to be addressed and overcome. Recent advancements in power electronics technology are enabling new systems to be developed and applied to aerospace applications. The growing trend is to connect the AC generator to the aircraft engine via a direct connection or a fixed ratio transmission thus, resulting in the generator providing a variable frequency supply. This move offers benefits to the aircraft such as reducing the weight and improving the reliability. Many aircraft power systems are now operating with a variable frequency over a typical range of 350 Hz to 800 Hz which varies with the engine speed[1,2]. This paper presents the results from a simple scheme for an adaptive control algorithm which could be suitable for use with an electric actuator (or other) aircraft load. The design of this system poses significant challenges due to the nature of the load range and supply frequency variation and requires many features such as: 1) Small input current harmonics to minimize losses., 2) Minimum size and weight to maximize portability and power density. Details will be given on the design methodology and simulation results obtained.
IEE Colloquium on Power Electronics for Demanding Applications, 1999
Power electronics for aircraft application. Dr Mohamad H Taha Lucas Aerospace - Hemel Hempstead .... more Power electronics for aircraft application. Dr Mohamad H Taha Lucas Aerospace - Hemel Hempstead ... Figure (2) shows the block diagram of a 22 kW proposed converter, which is connected to a variable frequency generator and outputs 1 15 V RMS 400 Hz constant frequency. ...
... also aims to obtain a fust order response with a bandwidth of 3k& To achieve this the com... more ... also aims to obtain a fust order response with a bandwidth of 3k& To achieve this the compensator has the following transfer function. ... through the full range of operational and environmental conditions likely to be encountered through the life of the aircraft, or support facility, in ...
Uploads
Papers by mohamad taha