# US 11,451,182 B2 · Power conversion device, motor control system, and parameter setting method therefor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,182 B2 - Document ID: US11451182B2 - Status: Granted - Kind: B2 - Application number: 16/644,400 - Filed: 2017-12-07 - Published: 2021-03-11 - Granted: 2022-09-20 - Earliest claimed: 2017-12-07 - Assignees: Hitachi Industrial Equipment Systems Co., Ltd. - Applicants: Hitachi Industrial Equipment Systems Co., Ltd. - Inventors: Yusuke Arao - Web page: https://patentgrep.com/patent/US11451182B2 ## CPC - H02P 29/00: Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors (arrangements for starting electric motors H02P1/00; arrangements for stopping or slowing electric motors H02P3/00; control of motors that can be connected to two or more different electric power supplies H02P4/00; regulating or controlling the speed or torque of two or more electric motors H02P5/00; vector control H02P21/00) - H02P 29/02: Providing protection against overload without automatic interruption of supply (protection against faults of stepper motors H02P8/36) - G01R 31/343: {in operation} - G01R 31/42: AC power supplies - H02M 7/217: using semiconductor devices only - H02P 31/00: Arrangements for regulating or controlling electric motors not provided for in groups H02P1/00 - H02P5/00, H02P7/00 or H02P21/00 - H02P29/00 - H02P 27/06: using DC to AC converters or inverters (H02P27/05 takes precedence) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A power conversion device includes an AC conversion unit; a detector that detects an output current, a DC voltage, and a temperature; an I/O unit; and a control unit. The control unit includes a motor control unit that controls the AC conversion unit; an operation instruction/parameter setting unit that converts an operation instruction and a parameter; an information management unit; an I/O control unit; and a detection unit that acquires data of the detector. The operation instruction/parameter setting unit outputs the set parameter and characteristic data to the information management unit, which acquires parameter information associated with the operation instruction and parameter information for an operation instruction change quantity required for adjustment from an information server. The operation instruction/parameter setting unit converts the operation instruction into a parameter using the data acquired by the detection unit and the parameter information and sets the parameter in the motor control unit. ## Claims ### Claim 1 A power conversion device comprising: an AC conversion unit that converts a DC voltage into a desired AC voltage; a detector that detects an output current of the AC conversion unit, the DC voltage, and a temperature of the AC conversion unit; an I/O unit that is a user interface; and a control unit, wherein the control unit includes: a motor control unit that controls the AC conversion unit; an operation instruction/parameter setting unit that converts an operation instruction and a parameter; an information management unit that manages information; an I/O control unit that controls the I/O unit; and a detection unit that acquires data of the detector, wherein the operation instruction/parameter setting unit outputs the set parameter and characteristic data to the information management unit, wherein the information management unit acquires parameter information associated with the operation instruction and parameter information for an operation instruction change quantity required for adjustment from an information server via an external network and outputs the acquired parameter information to the operation instruction/parameter setting unit, and wherein the operation instruction/parameter setting unit converts the operation instruction input to the I/O unit into a parameter by using the data acquired by the detection unit and the information from the information management unit and sets the parameter in the motor control unit. ### Claim 2 (depends on 1) The power conversion device according to claim 1, wherein the operation instruction/parameter setting unit causes the I/O unit to display information indicating whether or not the operation instruction can be changed and, upon receiving a request to change the operation instruction, adjusts a parameter of the power conversion device, drives the AC conversion unit, and causes the I/O unit to display the information indicating changeability of the operation instruction. ### Claim 3 (depends on 1) The power conversion device according to claim 1, wherein the operation instruction/parameter setting unit drives the AC conversion unit and automatically adjusts the parameter associated with the operation instruction on the basis of the data detected by the detection unit. ### Claim 4 A parameter setting method of a power conversion device including an AC conversion unit that converts a DC voltage to a desired AC voltage, a motor control unit that controls the AC conversion unit, and a detector that detects an output current of the AC conversion unit, the DC voltage, and a temperature of the AC conversion unit, the power conversion device further including an information management unit that manages parameter information associated with the operation instruction and parameter information for data detected by the detector, a set parameter, and characteristic data, the parameter setting method comprising converting the operation instruction input by a user into a parameter by using the data detected by the detector and information from the information management unit, and setting the parameter in the motor control unit. ### Claim 5 (depends on 4) The parameter setting method of the power conversion device according to claim 4, wherein the information management unit acquires the information from an information server via an external network. ### Claim 6 A motor control system having a power conversion device that controls a motor, wherein the power conversion device includes: an AC conversion unit that converts a DC voltage into a desired AC voltage; a detector that detects an output current of the AC conversion unit, the DC voltage, and a temperature of the AC conversion unit; an I/O unit that is a user interface; and a control unit, wherein the control unit includes: a motor control unit that controls the AC conversion unit; an operation instruction/parameter setting unit that converts an operation instruction and a parameter; an information management unit that manages information; an I/O control unit that controls the I/O unit; and a detection unit that acquires data of the detector, wherein the operation instruction/parameter setting unit outputs the set parameter and characteristic data to the information management unit, wherein the information management unit acquires parameter information associated with the operation instruction and parameter information for an operation instruction change quantity required for adjustment from an information server via an external network and outputs the acquired parameter information to the operation instruction/parameter setting unit, and wherein the operation instruction/parameter setting unit converts the operation instruction input to the I/O unit into a parameter by using the data acquired by the detection unit and the information from the information management unit and sets the parameter in the motor control unit.