CN201270456Y - 节能单相电动机电路 - Google Patents

节能单相电动机电路 Download PDF

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Publication number
CN201270456Y
CN201270456Y CNU2008201457705U CN200820145770U CN201270456Y CN 201270456 Y CN201270456 Y CN 201270456Y CN U2008201457705 U CNU2008201457705 U CN U2008201457705U CN 200820145770 U CN200820145770 U CN 200820145770U CN 201270456 Y CN201270456 Y CN 201270456Y
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China
Prior art keywords
phase motor
energy
saving single
motor circuit
parallel
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Expired - Fee Related
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CNU2008201457705U
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English (en)
Inventor
林仕供
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Fujian Mingdong New Energy Power Technology Co Ltd
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Individual
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation

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Abstract

本实用新型涉及一种节能单相电动机电路，包括主绕组、副绕组、起动电容及离心开关，副绕组、起动电容、离心开关相串联后与主绕组并联，其特征在于：所述主绕组两端还并联有补偿电容。本实用新型通过在主绕组的两端并联补偿电容，大大减小了电动机在空载或半载状态下的运转电流，从而可实时对电动机的功率因数进行补偿，起到了显著的节能降耗的目的。

Description

节能单相电动机电路
技术领域：
本实用新型涉及一种用于提高单相电动机功率因数的电路结构，特别是一种节能单相电动机电路。
背景技术：
目前，单相电动机在额定负载点的功率因数一般大于0.9，但在空载或半载的情况下，功率因数很低，大大浪费了能源。
发明内容：
本实用新型的目的在于提供一种节能单相电动机电路，该电路结构简单、设计合理，有利于节能降耗。
本实用新型通过以下技术方案来实现：
本实用新型节能单相电动机电路，包括主绕组、副绕组、起动电容及离心开关，副绕组、起动电容、离心开关相串联后与主绕组并联，其特征在于：所述主绕组两端还并联有补偿电容。
本实用新型通过在主绕组的两端并联补偿电容，大大减小了电动机在空载或半载状态下的运转电流，从而可实时对电动机的功率因数进行补偿，起到了显著的节能降耗的目的。
附图说明：
图1是本实用新型的构造示意图。
具体实施方式：
本实用新型节能单相电动机电路，包括主绕组1、副绕组2、起动电容3及离心开关4，副绕组2、起动电容3、离心开关4相串联后与主绕组1并联，主绕组1两端还并联有补偿电容5。
上述补偿电容5为金属薄膜电容。
上述起动电容3和离心开关4两端并联有运转电容6，运转电容6为金属薄膜电容。
本实用新型节能单相电动机电路，起动电容3两端并联有电阻7，单相电动机的起动电容3仅在离心开关4闭合后才工作，在打开后不工作，但在起动电容3的两端还经常存在有高压静电，对电容的绝缘有损坏作用，长期如此，将降低起动电容的使用寿命，所以，在起动电容两端并联一个高值电阻(如2千欧)，可释放静电以提高起动电容的寿命。

Claims (5)

1、一种节能单相电动机电路，包括主绕组、副绕组、起动电容及离心开关，副绕组、起动电容、离心开关相串联后与主绕组并联，其特征在于：所述主绕组两端还并联有补偿电容。
2、根据权利要求1所述的节能单相电动机电路，其特征在于：所述补偿电容为金属薄膜电容。
3、根据权利要求1或2所述的节能单相电动机电路，其特征在于：所述起动电容和离心开关两端并联有运转电容。
4、根据权利要求3所述的节能单相电动机电路，其特征在于：所述运转电容为金属薄膜电容。
5、根据权利要求4所述的节能单相电动机电路，其特征在于：所述起动电容两端并联有电阻。
CNU2008201457705U 2008-10-07 2008-10-07 节能单相电动机电路 Expired - Fee Related CN201270456Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201457705U CN201270456Y (zh) 2008-10-07 2008-10-07 节能单相电动机电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201457705U CN201270456Y (zh) 2008-10-07 2008-10-07 节能单相电动机电路

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CN201270456Y true CN201270456Y (zh) 2009-07-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104362904A (zh) * 2014-11-21 2015-02-18 温岭市康新电容器有限公司 一种用于单相电机上的电路结构
CN109831125A (zh) * 2017-11-23 2019-05-31 浙江富莱欧机电有限公司 一种双值电容异步电动机低压运行助力启动电路

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104362904A (zh) * 2014-11-21 2015-02-18 温岭市康新电容器有限公司 一种用于单相电机上的电路结构
CN109831125A (zh) * 2017-11-23 2019-05-31 浙江富莱欧机电有限公司 一种双值电容异步电动机低压运行助力启动电路

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