Power conversion apparatus
First Claim
Patent Images
1. A power conversion apparatus, comprising a first serial circuit, a second serial circuit;
- a third serial circuit, and an electrical storage device, all of which are connected in parallel, wherein;
the first serial circuit includes a first switching element and a second switching element, serially connected to each other, the first switching element having a first diode, the second switching element having a second diode, the first and second diodes being connected across their respective switching elements in an anti-parallel manner;
the second serial circuit includes a third switching element and a fourth switching element, serially connected to each other, the third switching element having a third diode, the fourth switching element having a fourth diode, the third and fourth diodes being connected across their respective switching elements in an anti-parallel manner;
the third serial circuit includes a fifth switching element and a sixth switching element, serially connected to each other, the fifth switching element having a fifth diode, the sixth switching element having a sixth diode, the fifth and sixth diodes being connected across their respective switching elements in an anti-parallel manner;
an intermediate point of the first serial circuit, at which the first and second switching elements are connected, is connected to one end of an input terminal;
an intermediate point of the second serial circuit, at which the third and fourth switching elements are connected, is connected to the other end of the input terminal via a first reactor;
an intermediate point of the third serial circuit, at which the fifth and sixth switching elements are connected, is connected to one end of an output terminal via a second reactor;
the other end of the input terminal is connected to the other end of the output terminal;
a full bridge circuit consisting of the first serial circuit and the second serial circuit is used to constitute a parallel converter connected to the input terminal in parallel;
a full bridge circuit consisting of the second serial circuit and the third serial circuit is used to constitute a serial converter serially connected between the input terminal and the output terminal; and
a control means is provided for controlling, in a single mode of operation, both the respective first and fifth switching elements to be turned on or off with a frequency that is higher than the frequency of an input voltage and for controlling the respective second and sixth switching elements to be turned on or off with logics that are reverse to those for the respective first and fifth switching elements, respectively.
2 Assignments
0 Petitions
Accused Products
Abstract
A power conversion apparatus includes serially connected arms U and X, serially connected arms V and Y, serially connected arms W and Z, and a capacitor, the pairs of serially connected arms and the capacitor all connected in parallel to one another. The input-side arms U and X and the output-side arms W and Z are subjected to PWM control so that the arms W and Z are controlled to have a voltage that is lower than that of the arms U and X, thereby providing a step down operation. A step up operation also can be provided by an opposite relation in which the arms W and Z are controlled to have a voltage that is higher than that of the arms U and X, thereby to expand the range within which the output voltage is controlled with the effect of reducing distortion.
10 Citations
2 Claims
-
1. A power conversion apparatus, comprising a first serial circuit, a second serial circuit;
- a third serial circuit, and an electrical storage device, all of which are connected in parallel, wherein;
the first serial circuit includes a first switching element and a second switching element, serially connected to each other, the first switching element having a first diode, the second switching element having a second diode, the first and second diodes being connected across their respective switching elements in an anti-parallel manner; the second serial circuit includes a third switching element and a fourth switching element, serially connected to each other, the third switching element having a third diode, the fourth switching element having a fourth diode, the third and fourth diodes being connected across their respective switching elements in an anti-parallel manner; the third serial circuit includes a fifth switching element and a sixth switching element, serially connected to each other, the fifth switching element having a fifth diode, the sixth switching element having a sixth diode, the fifth and sixth diodes being connected across their respective switching elements in an anti-parallel manner; an intermediate point of the first serial circuit, at which the first and second switching elements are connected, is connected to one end of an input terminal; an intermediate point of the second serial circuit, at which the third and fourth switching elements are connected, is connected to the other end of the input terminal via a first reactor; an intermediate point of the third serial circuit, at which the fifth and sixth switching elements are connected, is connected to one end of an output terminal via a second reactor; the other end of the input terminal is connected to the other end of the output terminal; a full bridge circuit consisting of the first serial circuit and the second serial circuit is used to constitute a parallel converter connected to the input terminal in parallel; a full bridge circuit consisting of the second serial circuit and the third serial circuit is used to constitute a serial converter serially connected between the input terminal and the output terminal; and a control means is provided for controlling, in a single mode of operation, both the respective first and fifth switching elements to be turned on or off with a frequency that is higher than the frequency of an input voltage and for controlling the respective second and sixth switching elements to be turned on or off with logics that are reverse to those for the respective first and fifth switching elements, respectively. - View Dependent Claims (2)
- a third serial circuit, and an electrical storage device, all of which are connected in parallel, wherein;
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeFuji Electric Company Limited (Fuji Electric Systems Company Limited)
-
Original AssigneeFuji Electric Systems Company Limited
-
InventorsKobayashi, Nobuyuki, Tokuda, Hirokazu, Matsuo, Hiroyuki, Hashimoto, Osamu, Okuma, Yasuhiro
-
Primary Examiner(s)Vu; Bao Q.
-
Application NumberUS11/139,982Publication NumberTime in Patent Office777 DaysField of Search363/17, 363/56.02, 363/98, 363/132US Class Current363/17CPC Class CodesH02M 5/4585 having a rectifier with con...
