Electric motors consume around 30 to 80% of total energy in industries. Part load operation of wh... more Electric motors consume around 30 to 80% of total energy in industries. Part load operation of which leads to lower efficiency. To improve efficiency and conserve energy under such partial load operating conditions, a novel switching strategy is proposed. Wherein, the stator and rotor windings are alternatively energized (switched) in accordance with the varying load. Adopting this technique with different ratings machine (2.2e150 kW) for linear and non-linear loads, exhibits energy saving of 5e15% and reactive power reduction in the range of 15e70%, over conventional method. Besides energy conservation , the proposed strategy involves less capital cost as well. Sensor fault detection & isolation, stability and overload protection are the additional features addressed in the controller. Techno economic analysis with existing contactor based and power electronic switching strategies are also carried out. In apart, the impact of changes in switchover point on energy savings and payback period is also analyzed.
Enhancement of cost effective energy conservation technology plays a vital role in process indust... more Enhancement of cost effective energy conservation technology plays a vital role in process industries. Hence acquiring star-delta based energy conservation scheme for induction motors is common in industries. But the impact of transient and vibration during switchover are the main hindrance of the star-delta based energy conservation scheme. Thus, analyzing the effect of transient and vibration is mandatory for predicting the machine's life and to provide proactive solution to mitigate these upshots. Therefore, this paper analyzes the effects of switching and excogitated the mitigation technique (an economically best strategy). In additional to this, the relative analysis is carried out between existing energy conservation scheme and the proposed strategy.
—Pumped storage hydro power plant with doubly fed asynchronous machine offers impressive features... more —Pumped storage hydro power plant with doubly fed asynchronous machine offers impressive features and provide flexibility in operation. In pumped storage power plant, the starting method of doubly fed asynchronous machine is similar to the conventional asynchronous machine, where a substantial amount of energy is wasted. This paper proposes an effective energy loss reduction technique to the doubly fed asynchronous machine based system during starting. The proposed start-up strategy is modeled and simulated using Matlab Simulink software with the experimental validation. Also a detailed comparative analysis is carried out between the existing method and the proposed strategy in this paper.
Hydropower is a major energy source among the renewable energy sources. According to “BP Statisti... more Hydropower is a major energy source among the renewable energy sources. According to “BP Statistical Review of World Energy, June 2013”, 16.34 percentage of global power generation acquire from hydropower. To attain efficient generation in hydro plant, extensive design with the upto date technology is mandatory.To make the generation more effective various technologies are adopted, among these the very effective one is power electronics (PE) technology. The paper has reviewed the challenges in how PE technology fits in as the solution for various hydroelectric energy systems (HEES). The PE technology is adapted efficiently in various parts of HEES like, grid integration, machine control, switching (pumping mode to generating mode and vice versa ), power control, voltage and frequency control, power factor correction, etc.,The advancement of PE technology diminishes the cost and space of the plant and enhances the power handling capability.The paper emergence the outstanding features of power electronics in various aspects that will extensively contribute to the development of HEES around the world.In addition,PE contribution satisfies the need of reliability, dynamic response, efficiency, protection, etc. ,in HEES.
Electric motors consume around 30 to 80% of total energy in industries. Part load operation of wh... more Electric motors consume around 30 to 80% of total energy in industries. Part load operation of which leads to lower efficiency. To improve efficiency and conserve energy under such partial load operating conditions, a novel switching strategy is proposed. Wherein, the stator and rotor windings are alternatively energized (switched) in accordance with the varying load. Adopting this technique with different ratings machine (2.2e150 kW) for linear and non-linear loads, exhibits energy saving of 5e15% and reactive power reduction in the range of 15e70%, over conventional method. Besides energy conservation , the proposed strategy involves less capital cost as well. Sensor fault detection & isolation, stability and overload protection are the additional features addressed in the controller. Techno economic analysis with existing contactor based and power electronic switching strategies are also carried out. In apart, the impact of changes in switchover point on energy savings and payback period is also analyzed.
Enhancement of cost effective energy conservation technology plays a vital role in process indust... more Enhancement of cost effective energy conservation technology plays a vital role in process industries. Hence acquiring star-delta based energy conservation scheme for induction motors is common in industries. But the impact of transient and vibration during switchover are the main hindrance of the star-delta based energy conservation scheme. Thus, analyzing the effect of transient and vibration is mandatory for predicting the machine's life and to provide proactive solution to mitigate these upshots. Therefore, this paper analyzes the effects of switching and excogitated the mitigation technique (an economically best strategy). In additional to this, the relative analysis is carried out between existing energy conservation scheme and the proposed strategy.
—Pumped storage hydro power plant with doubly fed asynchronous machine offers impressive features... more —Pumped storage hydro power plant with doubly fed asynchronous machine offers impressive features and provide flexibility in operation. In pumped storage power plant, the starting method of doubly fed asynchronous machine is similar to the conventional asynchronous machine, where a substantial amount of energy is wasted. This paper proposes an effective energy loss reduction technique to the doubly fed asynchronous machine based system during starting. The proposed start-up strategy is modeled and simulated using Matlab Simulink software with the experimental validation. Also a detailed comparative analysis is carried out between the existing method and the proposed strategy in this paper.
Hydropower is a major energy source among the renewable energy sources. According to “BP Statisti... more Hydropower is a major energy source among the renewable energy sources. According to “BP Statistical Review of World Energy, June 2013”, 16.34 percentage of global power generation acquire from hydropower. To attain efficient generation in hydro plant, extensive design with the upto date technology is mandatory.To make the generation more effective various technologies are adopted, among these the very effective one is power electronics (PE) technology. The paper has reviewed the challenges in how PE technology fits in as the solution for various hydroelectric energy systems (HEES). The PE technology is adapted efficiently in various parts of HEES like, grid integration, machine control, switching (pumping mode to generating mode and vice versa ), power control, voltage and frequency control, power factor correction, etc.,The advancement of PE technology diminishes the cost and space of the plant and enhances the power handling capability.The paper emergence the outstanding features of power electronics in various aspects that will extensively contribute to the development of HEES around the world.In addition,PE contribution satisfies the need of reliability, dynamic response, efficiency, protection, etc. ,in HEES.
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Papers by Raja Singh R
the plant and enhances the power handling capability.The paper emergence the outstanding features of
power electronics in various aspects that will extensively contribute to the development of HEES around
the world.In addition,PE contribution satisfies the need of reliability, dynamic response, efficiency,
protection, etc. ,in HEES.
the plant and enhances the power handling capability.The paper emergence the outstanding features of
power electronics in various aspects that will extensively contribute to the development of HEES around
the world.In addition,PE contribution satisfies the need of reliability, dynamic response, efficiency,
protection, etc. ,in HEES.