1.2.1 Passive BMSs-switched shunting resistor balancing Shunting resistor passive BMSs are the most straightforward cells SOC balance concept. They are based on removing the excess energy from the higher voltage cell(s) by bypassing the current of the highest SOC cell(s) and wait to until the lower SOC cell(s) to be in the same level. The shunting resistor methods can be categorized into two methods as shown in Fig. 2. The first method is fixed shunt resistor (FR), is shown in Fig. 2-a. The second method is controlled shunting resistor or switched shunt resistor (SR), is shown in Fig. 2-b. The two methods can be used for the low power applications with drawing current smaller than 10mA/Ah as recommended in [4r] to limit the energy dissipated into the shunt resistors. 1.2.1.1 Fixed shunt resistor …show more content…
2-a. The current drawn by each shunt resistor is linearly proportional to the cell voltage. As the cell voltage increases, more current is drawn by the shunt resistor. This will decrease the voltage differences between the different cells within the battery system since higher voltage cells is further discharged by the shunt resistors. It is worth mentioning that this method can be only used for Lead-acid and Nickel based batteries because they can be brought into overcharge conditions without cell damage [4r]. Its features are simplicity, low cost but the excess energy is converted into heat losses in the shunt resistors. In addition, the current drawn by the shunt resistors is not regulated. As a result, the cell voltages are not fully regulated
Midpoint Bias It is desirable to bias a JFET near the midpoint of its transfer characteristic curve where IDSS = I_DSS/2 Under ac signal condition, it allows the maximum amount of drain current swing between IDSS and 0. IDSS
N=Number of turns in the coil I = Current in the coil …………………………………………………………….Equation 9.3 Where U=
Existing basic unit is shown in fig.2.1. As shown in fig.2.1, the basic unit consist of three dc voltage sources and five unidirectional power switches. In this structure, power switches (S_2,S_4),(S_1,S_3, S_4, S_5), and (S_1,S_2,S_3, S_5) should not be simultaneously turned on in order to protect the dc voltage sources from the short circuit. Table 2.1 shows the existing basic unit power switches turn on and off states, where the basic unit is able to generate three different voltage levels at the output that is 0, V_1+V_3, and V_1+V_2+V_3. It is important to note that the basic unit is only able to generate positive levels at the output.
Children in this group were provided with base-10 and unit blocks. Each base 10 block is 1 cm × 1 cm × 10 cm in size. Each unit block is 1 cm × 1 cm × 1 cm in size. The research assistant gave explicit demonstrations of how to use both base-10 block and unit blocks to construct two-digit number. First, the research assistant placed out ten unit-blocks in a line and then put a base-10 block along to the ten unit-blocks.
(a) 3Mbps / 150Kbpa =3 X 1024 / 150 = 3072 / 150 =20.48 20 Users can be supported 150Kbps dedicated. (b)
When it concerns the security of your home or business, sound locks are the first line of defense. However, it is an unfortunate fact that there are many people that are not particularly well-educated about locks. As a result, they may not be aware of the answers to a couple of common questions concerning these components of their security systems. After learning these two answers, you will be better able to minimize some of the problems that your locks might encounter.
Unit D Summary: Light and Geometric Optics 10.1 : Light and The Electromagnetic Spectrum Chapter 10.1 covers light and the electromagnetic spectrum. This chapter starts off by describing how light is a form of energy that travels in waves. The properties of said waves include a crest (the highest point of the wave), the trough (the lowest point of the wave), and the rest position (the level of a wave without energy).
1. Identify the range of senses involved in communication • Sight (visual communication), Touch (tactile communication), Taste, Hearing (auditory communication), Smell (olfactory communication) 2. Identify the limited range of wavelengths and named parts of the electromagnetic spectrum detected by humans and compare this range with those of THREE other named vertebrates and TWO named invertebrates. Figure 1: the electromagnetic spectrum source: www.ces.fau.edu Vertebrates Human Japanese Dace Fish Rattlesnake Zebra Finch Part of electromagnetic spectrum detected ROYGBV (visible light) detected by light sensitive cells in the eye called rods and cones.
35. Do we run anti-virus software on servers on all Microsoft platforms? 36. Is dial-in access into the system/network is controlled by authentication and logs?
1. List and explain the top 5 factors that are required, at a bare minimum, to make an application secure. Security architecture, authentication, session management, access control, and input validation are the top five factors that make an application secure. Security architecture: OWASP verification requirements in security architecture verify all the application components and libraries that are present in the application are identified. A high level architecture of an application must be designed.
The three features from Unit 1’s reading I have chosen are Cutting, Copying and Pasting Text; Setting the Page Layout; and Removing Blank Paragraphs. Each of these three features makes every day word processing activities easier, saves time, and reduces the waste of paper. Cutting, copying and pasting text makes typing the same thing to multiple people or companies easier by copying the text and pasting it to different documents. You can edit the text by cutting or copying what needs to be changed from each document.
1)Campaign Campaign is when a person who holds political offices goes to different place giving their ideas and opinions about subjects hoping to gain the favor of the people. 2)Poll Poll is something that is used to determine how much support a person in political office has. Or how much support a person in a political office has lost. 3)Reapportionment Reapportionment is when a political office person has been reappointed to their current office holding.
The states b, e, and f can also be merged into one row. Finally c and d can be replaced by a, e and f can be replaced by b. New reduced table and final reduced table are shown below. Step 3. In order to obtain the circuit described by the reduced flow table, it is necessary to assign to each state a distinct binary value. This assignment converts the flow table into a transition table.
V. PROPOSED CONTROL SCHEME The proposed iUPQC control arrangement is an ABC reference structure based control, where the SAF and PAF are controlled in an independent way. In the suggested control scheme, the power calculation and harmonic abstraction are not required since the harmonics, unbalances, disturbances, and displacement would be compensated.