Stationary super-capacitor energy storage system to save regenerative braking energy in a metro line

2012 ◽  
Vol 56 ◽  
pp. 206-214 ◽  
Author(s):  
Reza Teymourfar ◽  
Behzad Asaei ◽  
Hossein Iman-Eini ◽  
Razieh Nejati fard
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Regenerative Braking ◽  
Super Capacitor

scholarly journals Pemanfaatan Baterai untuk Mengurangi Beban Puncak dan Meningkatkan Penyerapan Energi Regenerative Braking pada Kereta Api

2020 ◽  
Vol 22 (1) ◽  
pp. 69-76
Author(s):  
Hari Maghfiroh
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Regenerative Braking ◽  
Super Capacitor

Semakin meningkatnya kebutuhan transportasi dan meningkatnya pemanasan global akibat polusi, maka sistem transportasi massal merupakan alternative utama. Kereta api merupakan salah satu moda transportasi yang paling effisien dari segi energi dibandingkan moda transportasi lain. Kereta api listrik merupakan kereta yang ramah lingkuangan. Akan tetapi, kereta ini memerlukan energi listrik yang besar. Salah satu cara untuk mengurangi konsumsi energi kereta listrik adalah dengan regenerative braking. Listrik hasil regenerative braking kurang dapat termanfaatkan dan kebanyakan dibuang di brake resistor. Energy Storage System (ESS) dapat dipakai untuk menyimpan energi hasil regenerative braking. ESS dapat diletakkan disamping lintas (track-side) maupun pada sarana kereta api (on-board). ESS on-board (ESS-OB) memiliki efisiensi dan manajemen energi yang lebih mudah. Baterai dipilih menjadi ESS-OB karena marupakan salah satu jenis ESS yang lebih unggul dibanding tipe lain yaitu flywheel dan super-capacitor. Pengujian simulasi dilakukan dengan memodelkan substasiun, kereta api, ESS-OB, dan brake resistor. Pada pengujian kereta berjalan diantara dua substasiun dan berhenti di tiga stasiun kereta api. Hasil pengujian menunjukkan bahwa penambahan baterai sebagai ESS-OB di kereta mampu menyerap energi hasil regenerative braking dengan baik dan mampu mengurangi beban puncak hingga 2,11 %. Penghematan energi akan lebih banyak jika diterapkan pada beberapa unit kereta dan frekuensi perjalanan yang lebih tinggi. Penambahan baterai ini juga meningkatkan massa kereta hingga 0,07%.

scholarly journals Super-capacitor energy storage system to recuperate regenerative braking energy in elevator operation of high buildings

2022 ◽  
Vol 12 (2) ◽  
pp. 1358
Author(s):  
An Thi Hoai Thu Anh ◽  
Luong Huynh Duc
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Electric Energy ◽  
Energy Storage System ◽  
Regenerative Braking ◽  
Current Loop ◽  
Discharge Process ◽  
Loop Current ◽  
Super Capacitor ◽  
Electric Energy Consumption

<span>In operating phases of elevators, accelerating, braking modes occur frequently, so braking energy recuperation of elevators has contributed considerably to decrease the total electric energy consumption for operating elevators in multi-floor buildings. In this paper, the supercapacitor energy storage system is used to recover regenerative braking energy of elevators when they operate down full-load and up no-load, reducing fluctuation of voltage on DC bus as well. Therefore, super-capacitor energy storage system (SCESS) will be parallel with line utility to recuperate regenerative braking energy in braking phase and support energy for acceleration phase. The surplus energy will be stored in the supercapacitors thanks to a DC-DC converter capable of exchanging energy bidirectionally in buck/boost modes, and designing control strategy including two control loops. Inner loop-current loop: controlling charge/discharge process of supercapacitors by current iL complying with operation characteristic of elevator; Outer loop-voltage loop: managing UDC-link at a fixed value. Simulation results with elevator system of the ten-floor building, Hanoi, Vietnam installed SCESS have been verified on MATLAB Simulink, SimPowerSystem with saving energy level about 30%.</span>

scholarly journals A New Method to Optimize Semiactive Hybrid Energy Storage System for Hybrid Electrical Vehicle by Using PE Function

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Cong Zhang ◽  
Haitao Min ◽  
Yuanbin Yu ◽  
Qingnian Wang ◽  
Huanli Sun
Keyword(s):  
Energy Storage ◽  
Storage System ◽  
Energy Storage System ◽  
Super Capacitor ◽  
Power Sources ◽  
Hybrid Energy ◽  
Hybrid Energy Storage ◽  
Hybrid Energy Storage System ◽  
Electrical Vehicle ◽  
Mass Volume

Although both battery and super-capacitor are important power sources for hybrid electric vehicles, there is no accurate configuration theory to match the above two kinds of power sources which have significantly different characteristics on energy and power storage for the goal of making good use of their individual features without size wasting. In this paper, a new performance is presented that is used for analysis and optimal design method of battery and super-capacitor for hybrid energy storage system of a parallel hybrid electrical vehicle. In order to achieve optimal design with less consumption, the power-energy function is applied to establish direct mathematical relationship between demand power and the performance. During matching process, firstly, three typical operating conditions are chosen as the basis of design; secondly, the energy and power capacity evaluation methods for the parameters of battery and super-capacitor in hybrid energy storage system are proposed; thirdly, the mass, volume, and cost of the system are optimized simultaneously by using power-energy function. As a result, there are significant advantages on mass, volume, and cost for the hybrid energy storage system with the matching method. Simulation results fit well with the results of analysis, which confirms that the optimized design can meet the demand of hybrid electric vehicle well.

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