72
Here, the mechanism simplifies the physical characteristics of energy in relation
to the circuit in order to confirm a large capacity of energy generation by the opencircuit voltage-based MPP technique which is expressed by
P
I V
MPP
M PP MPP
=
(4.30)
Here, the energy generation rate is clarified as the highest of either I MPP or V MPP
and thus the net power generation P MPP can be calculated easily by implementing the
following equation:
V
K V
MPP
o c oc
≈
(4.31)
where K oc represents the volt function, which is related to the rotor speed.
Subsequently, net voltage estimation of V oc has been determined from the module
volts V oc , and the open-circuited V oc is transformed with the measurement of V MPP in
order to interconnect to short-circuit current-based MPP technique. Thus, this
open-circuit voltage transformation will confirm a linear dependency between the
M PP current and the short-circuit current in order to confirm the generation of electricity as follows:
I
K I
MPP
s c sc
≈
(4.32)
where K sc represents the current flow, which is calculated by analyzing the rotor
speed of the generator.
Naturally, the dynamic electricity energy delivery constantly suggests the nonlinear function of current proliferation via the open circuit which is also functional
and is expressed as
C t C t
P t P t P
t
t
bat
b at
PV
wg
load
cad
cha
1
K
K
'
(4.33)
where C bat (t) and C bat (t − 1) confirm the released energy densities in times (t) and
(t − 1). P PV denotes the net energy generation, P wg is the net energy generation load,
P load (t) confirms the energy released at load t where t represents the simulated time
sequence (Δt = 1 h), η cad represents the efficiency of the AC/DC conversion ratio,
and η cha represents the energy releasing efficiency [5, 46].
Here, the total energy generated shall meet the net energy load demand of a
house or building by the process of discharging (i.e., η inv P wg (t) + P PV (t) < P load (t))
which is expressed as
C t C t
P t
P
t P t
bat
b at
dech
PV
load
wg
inv
§
©
¨ ¨
·
¹
¸ ¸
1
1
K
K
§ §
©
¨
¨
·
¹
¸
¸
't
(4.34)
where η dech represents the energy release efficiency, η inv represents the conversion
rate, C represents the capability of the energy delivery in time t, and C bat (t) is
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